WO2000029695A1 - Keyboard mounting mechanism - Google Patents

Keyboard mounting mechanism Download PDF

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Publication number
WO2000029695A1
WO2000029695A1 PCT/US1998/023246 US9823246W WO0029695A1 WO 2000029695 A1 WO2000029695 A1 WO 2000029695A1 US 9823246 W US9823246 W US 9823246W WO 0029695 A1 WO0029695 A1 WO 0029695A1
Authority
WO
WIPO (PCT)
Prior art keywords
pivot
spring
opposing
movement
pivot pin
Prior art date
Application number
PCT/US1998/023246
Other languages
French (fr)
Inventor
Donald R. Pangborn
Peter J. Kerl
Original Assignee
Pangborn Donald R
Kerl Peter J
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pangborn Donald R, Kerl Peter J filed Critical Pangborn Donald R
Priority to US09/180,786 priority Critical patent/US6257538B1/en
Priority to CA002263448A priority patent/CA2263448C/en
Priority to PCT/US1998/023246 priority patent/WO2000029695A1/en
Publication of WO2000029695A1 publication Critical patent/WO2000029695A1/en

Links

Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47BTABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B21/00Tables or desks for office equipment, e.g. typewriters, keyboards
    • A47B21/03Tables or desks for office equipment, e.g. typewriters, keyboards with substantially horizontally extensible or adjustable parts other than drawers, e.g. leaves
    • A47B21/0314Platforms for supporting office equipment

Definitions

  • a mechanism including a pair of link elements each having first and second ends thereof pivotally connected to a surface mounting element and a base mounting element, respectively.
  • Such mechanisms typically include a counterbalance spring tending to bias the surface mounting element and link elements upwardly relative to the base, and a manually operable locking mechanism serving to releasably retain the surface mounting element in a desired vertical position.
  • the present invention relates to improvements in mechanisms for mounting a keyboard supporting surface for both vertical swinging movement relative to a base and for vertical tilting movements under the control of a single or common locking mechanism, wherein a spring bias is provided for opposing both vertically downwardly directed swinging and tilting movements of the keyboard supporting surface.
  • Fig. 1 is a prospective view of a keyboard mounting mechanism incorporating the invention
  • Fig. 2 is a fragmentary sectional view taken generally along the line 2-2 in Fig. 1 ;
  • Fig. 3 is a sectional view taken generally along the line 3-3 in Fig. 1;
  • Fig. 4 is a fragmentary sectional view similar to Fig.
  • Fig. 5 is a sectional view similar to Fig. 3, but showing the alternative form of the present invention. ⁇ FT ⁇ TT.F ⁇ TFSO TPTTO
  • a keyboard mounting mechanism formed in accordance with the present invention is designated as 10, and shown as generally including a linkage 12 comprising first or upper and second or lower link elements 14 and 16 having first or front ends pivotally connected to a first element 18, which is adapted for mounting a keyboard supporting surface, not shown, and second or rear ends pivotally connected to a second element 20, which is adapted for mounting on a suitable base, such as may be defined by the top of a table or work station, not shown, either directly or via a guide plate 22 slidably received within a guide track 24.
  • Link elements 14 and 16, and first and second elements 18 and 20 cooperate to define a four-bar linkage, which is preferably a parallelogram linkage.
  • Link elements 14 and 16 are best shown in Figs. 1, 2 and 3 as being of generally U-shaped configuration having upper and lower bridging panels 14a and 16a, respectively, and parallel and vertically extending side panels 14b, 14b and 16b, 16b, respectively, wherein the inwardly facing surfaces of side panels 14b, 14b are parallel to and closely adjacent the outwardly facing surfaces of side panels 16b, 16b.
  • First element 18 is shown as comprising an inverted generally U-shaped mounting portion 24 having a bridging panel 24a and a pair of parallel side panels 24b, 24b arranged with their oppositely facing or outer surfaces disposed in a closely-spaced and parallel relationship to the facing or inner surfaces of side panels 16b and 16b.
  • Bridging panel 24a is also formed integrally with a mounting plate 26 adapted for mounting a keyboard supporting tray or other suitable work surface, not shown.
  • Second element 20 is shown as having an inverted, generally U-shaped configuration defined by a bridging panel 20a and a pair of parallel side panels 20b, 20b arranged with their facing or inner surfaces disposed in a parallel relationship and relatively adjacent the oppositely or outwardly-facing surfaces of side panels 14b and 14b.
  • first pivot means shown as including a first or upper and a second or lower pivot devices 34 and 36.
  • upper pivot device 34 includes a pivot pin 38 having an enlarged first end 38a, a threaded second end 38b and a mid-portion 38c arranged to extend through bore openings 40,40 formed in side panels 14b, 14b; arculate slots 42,42, formed in side panels 16b, 16b; and arculate slots 44,44 formed in side panels 24b, 24b.
  • Spacer washers 45,45 are arranged concentrically of pivot pin intermediate side walls 16b, 24b and 16b, 24b.
  • Lower pivot device 36 includes a pivot pin 46 having enlarged first and second ends 46a and 46b, and a mid-portion 46c arranged to extend through bore openings 48,48 formed in side panels 16b, 16b and bore openings 50,50 formed in side panels 24b, 24b. Slots 42,42 and 44,44 are arranged equidistant from the center or pivot axis 46d of pivot pin 46.
  • Second ends of link elements 14 and 16 are connected to second element 20 by second pivot means including upper end and lower pivot devices 52 and 54, which include pivot pins 56 and 58 whose ends are received within pairs of aligned upper and lower bore openings, not shown, formed in side panels 20b, 20b, and aligned pairs of bore openings provided in side panels 14b and 16b, only one of each of such pairs of bore openings being shown in Fig. 2 as 14c and 16c.
  • Pivot pins 56 and 58 are parallel to each other and pivot pins 38 and 46.
  • a spring mounting bracket 60 is shown in Fig. 2 as being arranged within second element 20 and disposed to bear against pivot pins 56 and 58.
  • Spring mounting bracket 60 is suitably connected to the rear ends of return or tilt control and counterbalance springs 66 and 68, whose forward ends are connected to bracket tabs 24c and 16c, formed internally with a rearwardly disposed edge of panel 24a of first element 18 and a forwardly disposed edge of panel 16a of lower link 16, respectively.
  • Return spring 66 tends to bias first element 18 for upwardly directed tilting movement in a direction extending clockwise of lower pivot pin axis 46d into an uppermost tilt position defined for instance by engagement of pivot pin 38 with the left hand end of slot 44, as shown in Fig. 2.
  • first element 18 may be swung counterclockwise against the bias of return spring 66 about lower pivot pin 46 until it assumes a lower tilted position, not shown, defined for instance by engagement of pivot pin 38 with the right hand end of slot 44, as will become apparent from viewing Fig. 2.
  • Counterbalance spring 68 tends to bias first element 18 to swing upwardly relative to second element 20 from a suitably lower storage position, not shown, through intermediate use positions, only one of which is shown in Figs. 1 and 2, into a suitably defined upper use position, also not shown.
  • first element 18 is clamped against tilting or pivotal movement about pivot pin 46 and against vertical swinging movements relative to second element 20.
  • return spring 66 cooperates with counterbalance spring 68 to bias the first element for vertical movement relative to the second element .
  • the clamping mechanism employed in the practice of the present invention may be variously defined, but may in its simplest form include a manually operable knob 72 threaded onto upper pivot pin threaded end portion 38b for engagement with a sleeve 74 arranged to end abut against an outer surface of one of side panels 14b; 14b.
  • Tightening knob 72 simultaneously serves to clamp side panels 14b; 14b; side panels 16b, 16b and side panels 24b, 24b between sleeve 74 and pivot pin enlarged end 38a, and thereby prevent tilting movement of element 18 about pivot pin 46 and relative movement between link elements 14 and 16.
  • the slight unthreading of knob 72 simultaneously releases element 18 for tilting and vertical swinging movements.
  • FIGs. 4 and 5 An alternate construction is shown in Figs. 4 and 5, wherein element 18' is shown as being supported for tilting movement about pivot axis 38d' of upper pivot pin 38', and slots 42' and 44' arranged to receive lower pivot pin 46' with slot 44' cooperating with lower pivot pin 46' to define the limits of tilting movement of element 18'. More specifically, side walls 14a ',14a' of upper link 14' have aligned bore openings 40 ',40' for receiving pivot pin 38' and slots 42' and 42'; and the side walls 16a' and 16a' of lower link 16 have aligned bore openings 48 ',48' to receive lower pivot pin 46' .
  • upper pivot pin 38' is provided with enlarged ends 38a ',38b 1 ;
  • lower pivot pin 46' is provided with an enlarged first end 46a' and a threaded second end 46b' for receiving a clamping sleeve 74 ' and a manually operable knob 72 ' ;
  • a spacer sleeve 78 ' is disposed concentrically of pivot pin 46' in order to prevent converging movement of side walls 24b' when the knob is tightened; and spacer washers 80 ',80' are disposed concentrically of pivot pin 46' intermediate side walls 16b', 24b' and 16b ',24b'.
  • FIG. 4 further illustrates a modified return spring arrangement, wherein a coil-type torsion spring 66' is disposed concentrically of pivot pin 38' with its opposite ends 66a 1 and 66b' arranged to bear against the downwardly facing surfaces of bridging panels 24a' and 14a 1 .
  • a modified counterbalance spring arrangement is shown, wherein a coil-type torsion spring 68' is disposed concentrically of pivot pin 56' with its opposite ends 68a and 68b arranged to bear on the downwardly facing surfaces of bridging panels 14a 1 and 20a', respectively.
  • the alternative embodiment employs return spring 66' to bias first element 18' for clockwise directed movement relative upper link 14 and counterbalance spring 68 ' to bias the upper link for clockwise directed swinging movement relative to second element 20'.
  • tension and torsion springs may be employed and, if desired, one or both such springs replaced by other known spring devices, such as gas operated springs. Still further, it is contemplated that a single spring extending for example between bracket 60 and tab 24c may be employed to perform both return and counterbalance functions, although separate springs are preferred.

Abstract

A mechanism for mounting a keyboard supporting surface on a base including a linkage (12) for mounting the surface for vertical swinging movement relative to the base and for vertical tilting movement relative thereto, a lock device (72) for simultaneously locking the surface against swinging and tilting movements, a counterbalance spring (68) for opposing downwardly directed swinging movement of the surface and a return spring (66) for opposing downwardly directed tilting movement of the surface.

Description

KEYBOARD MOUNTING MECHANISM
BAC ftRO .J n OF THE T F.NTTON
It is known to support a surface, such as may be defined by a keyboard supporting tray, for vertically swinging movement relative to a base, such as may be defined by the top of a table or work station, by a mechanism including a pair of link elements each having first and second ends thereof pivotally connected to a surface mounting element and a base mounting element, respectively. Such mechanisms typically include a counterbalance spring tending to bias the surface mounting element and link elements upwardly relative to the base, and a manually operable locking mechanism serving to releasably retain the surface mounting element in a desired vertical position.
It has also been proposed to provide an additional bracket serving to interconnect the surface mounting element to the link elements in a manner allowing downwardly directed tilting movement of the surface mounting element in combination with an additional manually operable locking mechanism serving to releasably retain the surface mounting element in a desired tilted position.
Known clamping mechanisms are disclosed for example by U.S. Patents 4,616,798; 4,644,875; 4,691,888; 5,037,054 and 5,791,263. STTMMΆPY OF THF TNVENTTON
The present invention relates to improvements in mechanisms for mounting a keyboard supporting surface for both vertical swinging movement relative to a base and for vertical tilting movements under the control of a single or common locking mechanism, wherein a spring bias is provided for opposing both vertically downwardly directed swinging and tilting movements of the keyboard supporting surface.
In the preferred construction of the present mechanism, separate counterbalance and return or tilt control springs are provided in order to permit individually controlled swinging and tilting movements of the keyboard supporting surface.
P.PTFF nFSfRTPTTON OF THF nPAWTWOR
The nature and mode of operation of the present invention will now be more fully described in the following detailed description taken with the accompanying drawings wherein:
Fig. 1 is a prospective view of a keyboard mounting mechanism incorporating the invention;
Fig. 2 is a fragmentary sectional view taken generally along the line 2-2 in Fig. 1 ;
Fig. 3 is a sectional view taken generally along the line 3-3 in Fig. 1; Fig. 4 is a fragmentary sectional view similar to Fig.
2, but showing an alternative form of the present invention; and
Fig. 5 is a sectional view similar to Fig. 3, but showing the alternative form of the present invention. ΠFTΆTT.FΠ TFSO TPTTO
Reference is first made to Fig. 1, wherein a keyboard mounting mechanism formed in accordance with the present invention is designated as 10, and shown as generally including a linkage 12 comprising first or upper and second or lower link elements 14 and 16 having first or front ends pivotally connected to a first element 18, which is adapted for mounting a keyboard supporting surface, not shown, and second or rear ends pivotally connected to a second element 20, which is adapted for mounting on a suitable base, such as may be defined by the top of a table or work station, not shown, either directly or via a guide plate 22 slidably received within a guide track 24. Link elements 14 and 16, and first and second elements 18 and 20 cooperate to define a four-bar linkage, which is preferably a parallelogram linkage.
Link elements 14 and 16 are best shown in Figs. 1, 2 and 3 as being of generally U-shaped configuration having upper and lower bridging panels 14a and 16a, respectively, and parallel and vertically extending side panels 14b, 14b and 16b, 16b, respectively, wherein the inwardly facing surfaces of side panels 14b, 14b are parallel to and closely adjacent the outwardly facing surfaces of side panels 16b, 16b.
First element 18 is shown as comprising an inverted generally U-shaped mounting portion 24 having a bridging panel 24a and a pair of parallel side panels 24b, 24b arranged with their oppositely facing or outer surfaces disposed in a closely-spaced and parallel relationship to the facing or inner surfaces of side panels 16b and 16b. Bridging panel 24a is also formed integrally with a mounting plate 26 adapted for mounting a keyboard supporting tray or other suitable work surface, not shown. Second element 20 is shown as having an inverted, generally U-shaped configuration defined by a bridging panel 20a and a pair of parallel side panels 20b, 20b arranged with their facing or inner surfaces disposed in a parallel relationship and relatively adjacent the oppositely or outwardly-facing surfaces of side panels 14b and 14b.
The first ends of link elements 14 and 16 are connected to first element 18 by first pivot means, shown as including a first or upper and a second or lower pivot devices 34 and 36. As best shown in Fig. 3, upper pivot device 34 includes a pivot pin 38 having an enlarged first end 38a, a threaded second end 38b and a mid-portion 38c arranged to extend through bore openings 40,40 formed in side panels 14b, 14b; arculate slots 42,42, formed in side panels 16b, 16b; and arculate slots 44,44 formed in side panels 24b, 24b. Spacer washers 45,45 are arranged concentrically of pivot pin intermediate side walls 16b, 24b and 16b, 24b.
Lower pivot device 36 includes a pivot pin 46 having enlarged first and second ends 46a and 46b, and a mid-portion 46c arranged to extend through bore openings 48,48 formed in side panels 16b, 16b and bore openings 50,50 formed in side panels 24b, 24b. Slots 42,42 and 44,44 are arranged equidistant from the center or pivot axis 46d of pivot pin 46.
Second ends of link elements 14 and 16 are connected to second element 20 by second pivot means including upper end and lower pivot devices 52 and 54, which include pivot pins 56 and 58 whose ends are received within pairs of aligned upper and lower bore openings, not shown, formed in side panels 20b, 20b, and aligned pairs of bore openings provided in side panels 14b and 16b, only one of each of such pairs of bore openings being shown in Fig. 2 as 14c and 16c. Pivot pins 56 and 58 are parallel to each other and pivot pins 38 and 46. A spring mounting bracket 60 is shown in Fig. 2 as being arranged within second element 20 and disposed to bear against pivot pins 56 and 58. Spring mounting bracket 60 is suitably connected to the rear ends of return or tilt control and counterbalance springs 66 and 68, whose forward ends are connected to bracket tabs 24c and 16c, formed internally with a rearwardly disposed edge of panel 24a of first element 18 and a forwardly disposed edge of panel 16a of lower link 16, respectively.
Return spring 66 tends to bias first element 18 for upwardly directed tilting movement in a direction extending clockwise of lower pivot pin axis 46d into an uppermost tilt position defined for instance by engagement of pivot pin 38 with the left hand end of slot 44, as shown in Fig. 2. When the clamping mechanism of the present invention designated generally as 70 in Figs. 1 and 3 is in its release position to be described, first element 18 may be swung counterclockwise against the bias of return spring 66 about lower pivot pin 46 until it assumes a lower tilted position, not shown, defined for instance by engagement of pivot pin 38 with the right hand end of slot 44, as will become apparent from viewing Fig. 2.
Counterbalance spring 68 tends to bias first element 18 to swing upwardly relative to second element 20 from a suitably lower storage position, not shown, through intermediate use positions, only one of which is shown in Figs. 1 and 2, into a suitably defined upper use position, also not shown. When clamping mechanism 70 is in its clamping position to be described, first element 18 is clamped against tilting or pivotal movement about pivot pin 46 and against vertical swinging movements relative to second element 20. When the clamping mechanism is in its release position, return spring 66 cooperates with counterbalance spring 68 to bias the first element for vertical movement relative to the second element .
The clamping mechanism employed in the practice of the present invention may be variously defined, but may in its simplest form include a manually operable knob 72 threaded onto upper pivot pin threaded end portion 38b for engagement with a sleeve 74 arranged to end abut against an outer surface of one of side panels 14b; 14b. Tightening knob 72 simultaneously serves to clamp side panels 14b; 14b; side panels 16b, 16b and side panels 24b, 24b between sleeve 74 and pivot pin enlarged end 38a, and thereby prevent tilting movement of element 18 about pivot pin 46 and relative movement between link elements 14 and 16. Conversely, the slight unthreading of knob 72 simultaneously releases element 18 for tilting and vertical swinging movements.
An alternate construction is shown in Figs. 4 and 5, wherein element 18' is shown as being supported for tilting movement about pivot axis 38d' of upper pivot pin 38', and slots 42' and 44' arranged to receive lower pivot pin 46' with slot 44' cooperating with lower pivot pin 46' to define the limits of tilting movement of element 18'. More specifically, side walls 14a ',14a' of upper link 14' have aligned bore openings 40 ',40' for receiving pivot pin 38' and slots 42' and 42'; and the side walls 16a' and 16a' of lower link 16 have aligned bore openings 48 ',48' to receive lower pivot pin 46' . Further, upper pivot pin 38' is provided with enlarged ends 38a ',38b1; lower pivot pin 46' is provided with an enlarged first end 46a' and a threaded second end 46b' for receiving a clamping sleeve 74 ' and a manually operable knob 72 ' ; a spacer sleeve 78 ' is disposed concentrically of pivot pin 46' in order to prevent converging movement of side walls 24b' when the knob is tightened; and spacer washers 80 ',80' are disposed concentrically of pivot pin 46' intermediate side walls 16b', 24b' and 16b ',24b'. Fig. 4 further illustrates a modified return spring arrangement, wherein a coil-type torsion spring 66' is disposed concentrically of pivot pin 38' with its opposite ends 66a1 and 66b' arranged to bear against the downwardly facing surfaces of bridging panels 24a' and 14a1. Further, in Fig. 4, a modified counterbalance spring arrangement is shown, wherein a coil-type torsion spring 68' is disposed concentrically of pivot pin 56' with its opposite ends 68a and 68b arranged to bear on the downwardly facing surfaces of bridging panels 14a1 and 20a', respectively.
As with the first embodiment of the invention shown in Figs. 1-3, the alternative embodiment employs return spring 66' to bias first element 18' for clockwise directed movement relative upper link 14 and counterbalance spring 68 ' to bias the upper link for clockwise directed swinging movement relative to second element 20'.
It is contemplated that various combinations of tension and torsion springs may be employed and, if desired, one or both such springs replaced by other known spring devices, such as gas operated springs. Still further, it is contemplated that a single spring extending for example between bracket 60 and tab 24c may be employed to perform both return and counterbalance functions, although separate springs are preferred.

Claims

What is claimed is:
1. A mechanism for mounting a keyboard supporting surface for movement relative to a base comprising: first and second link elements each having a first and a second end; first and second elements adapted to be connected to said surface and said base, respectively; first and second pivot means for movably connecting said first and second ends of said first and second link elements to said first and second elements, respectively, to permit vertical swinging movement of said first element relative to said second element, said first pivot means including first and second pivot devices, said first pivot device extends through a bore opening in said first end of one of said first and second link elements and an arculate slot formed in said first end of the other of said first and second link elements and said first element, said second pivot device extends through bore openings in said first end of said other of said first and second link elements and said first element; said first and second pivot devices have parallel pivot axes and said slots have like radii of curvature measured from a pivot axis of said second pivot device; spring means for opposing downwardly directed vertical swinging movement of said first element relative to said second element and downwardly directed tilting movement of said first element about said second pivot device; and clamping means for simultaneously opposing said vertical swinging movement of said first element relative to said second element and said tilting movement of said first element about said second pivot device.
2. A mechanism according to claim 2 , wherein said clamping means is supported by said first pivot device.
3. A mechanism according to claim 1, wherein said spring means includes a first counterbalance spring for opposing said vertical swinging movement of said first element, and a second return spring for opposing said tilting movement of said first element.
4. A mechanism according to claim 3, wherein said first and second springs are tension springs.
5. A mechanism according to claim 3, wherein said first and second springs are torsion springs.
6. A mechanism according to claim 3, wherein at least one of said first and second springs is a tension spring.
7. A mechanism according to claim 3, wherein at least on of said first and second springs is a torsion spring.
8. A mechanism for mounting a keyboard supporting surface for movement relative to a base comprising: upper and lower link elements each having a first and a second end; first and second elements adapted to be connected to said surface and said base, respectively; first and second pivot means for movably connecting said first and second ends of said upper and lower link elements to said first and second elements, respectively, to permit vertical swinging movement of said surface relative to said base, said first pivot means including upper and lower pivot pins, said first pivot pin extends through a bore opening in said first end of said upper link element and arculate slots formed in said first end of said lower link element and said first element, said second pivot pin extends through bore openings in said first end of said lower link element and said first element; said first and second pivot pins have parallel pivot axes and said slots having like radii of curvature measured from a pivot axis of said second pivot pin; spring means for opposing downwardly directed vertical swinging movement of said first element relative to said second element and downwardly directed tilting movement of said first element about said second pivot pin; and clamping means operable for simultaneously opposing vertical swinging movement of said first element relative to said second element and tilting movement of said first element about said second pivot pin.
9. A mechanism according to claim 8, wherein said clamping means is supported by said first pivot pin.
10. A mechanism according to claim 9, wherein said spring means includes a first spring for opposing said vertical swinging movement of said first element, and a second spring for opposing said tilting movement of said first element .
11. A mechanism for mounting a keyboard supporting surface for movement relative to a base comprising: upper and lower link elements each having a first and a second end; first and second elements adapted to be connected to said surface and said base, respectively; first and second pivot means for movably connecting said first and second ends of said upper and lower link elements to said first and second elements, respectively, to permit vertical swinging movement of said first element relative to said second element, said first pivot means including upper and lower pivot pins, said upper pivot pin extends through bore openings in said first end of said upper link element and said first element, said lower pivot pin extends through a bore opening in said first end of said lower link element and arculate slots in said first end of said upper link and said first element; said first and second pivot pins have parallel pivot axes and said slots having like radii of curvature measured from a pivot axis of said upper pivot pin; spring means for opposing downwardly directed vertical swinging movement of said first element relative to said second element and downwardly directed tilting movement of said first element about said upper pivot pin; and clamping means operable for simultaneously opposing vertical swinging movement of said first element relative to said second element and tilting movement of said first element about said upper pivot pin.
12. A mechanism according to claim 11, wherein said clamping means is supported by said lower pivot pin.
13. A mechanism according to claim 12, wherein said spring means includes a first spring for opposing said vertical swinging movement of said first element, and a second spring for opposing said tilting movement of said first element .
PCT/US1998/023246 1998-11-13 1998-11-13 Keyboard mounting mechanism WO2000029695A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US09/180,786 US6257538B1 (en) 1998-11-13 1998-11-13 Keyboard mounting mechanism
CA002263448A CA2263448C (en) 1998-11-13 1998-11-13 Keyboard mounting mechanism
PCT/US1998/023246 WO2000029695A1 (en) 1998-11-13 1998-11-13 Keyboard mounting mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1998/023246 WO2000029695A1 (en) 1998-11-13 1998-11-13 Keyboard mounting mechanism

Publications (1)

Publication Number Publication Date
WO2000029695A1 true WO2000029695A1 (en) 2000-05-25

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Application Number Title Priority Date Filing Date
PCT/US1998/023246 WO2000029695A1 (en) 1998-11-13 1998-11-13 Keyboard mounting mechanism

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WO (1) WO2000029695A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US127798A (en) * 1872-06-11 Improvement in self-sustaining gas-brackets, lamp-stands
US4644875A (en) * 1985-03-22 1987-02-24 Weber-Knapp Company Adjustable keyboard supporting mechanism
US4706919A (en) * 1986-12-17 1987-11-17 Haworth, Inc. Keyboard support with automatic lowering mechanism
US5487525A (en) * 1991-10-18 1996-01-30 Drabczyk; Matthew P. Adjustable keyboard holder for workstations

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US127798A (en) * 1872-06-11 Improvement in self-sustaining gas-brackets, lamp-stands
US4644875A (en) * 1985-03-22 1987-02-24 Weber-Knapp Company Adjustable keyboard supporting mechanism
US4706919A (en) * 1986-12-17 1987-11-17 Haworth, Inc. Keyboard support with automatic lowering mechanism
US5487525A (en) * 1991-10-18 1996-01-30 Drabczyk; Matthew P. Adjustable keyboard holder for workstations

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
K. TAGARAGI et al., "Firewall Internet Technology Relating to Firemall (in Japanese)", Tokyo: Shokodo, 10 June 1998, pages 148-152. *
NAOMASA, MINAMI et al., "Research on the Development of the Platform for Self-decoding type Confidential Information Communication (in Japanese)", Symposium on Cipher and Information Security in 1996, 1996, SCIS96-01C. *

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