WO2005069992A2

WO2005069992A2 - Universal projector mount

Info

Publication number: WO2005069992A2
Application number: PCT/US2005/002179
Authority: WO
Inventors: Steven Friederich; Jay Dittmer
Original assignee: Chief Manufacturing, Inc.
Priority date: 2004-01-23
Filing date: 2005-01-24
Publication date: 2005-08-04
Also published as: US7503536B2; EP1751464A2; CA2553819A1; JP2008503761A; WO2005069992A3; US20050161575A1; AU2005207024A1

Abstract

A universal projector mount that can be fitted to mount projectors of a variety of different makes and models. The invention includes multiple adjustable arms coupled with an interface plate that is, in turn, attached to a standard projector mount on the fixed structure from which the projector is supported. The arms are adjustable radially and longitudinally to virtually any position so as to accommodate various fastener or fastener receiving locations on different makes and models of projectors.

Description

UNIVERSAL PROJECTOR MOUNT RELATED APPLICATIONS This application claims the benefit of United States Provisional patent applications 60/538,634 filed January 23, 2004 and 60/637,710 filed December 21, 2004 both entitled Universal Projector Mount. Both of the above referenced applications are incorporated herein by in their entirety by reference. FIELD OF THE INVENTION The present invention relates generally to mounts for projectors. More particularly, the present invention relates to a universal mount for a projector.

BACKGROUND OF THE INVENTION Visual projection systems are commonly used for entertainment and displaying, and presenting visual information to groups of people. Such visual projection systems typically include a projector unit and a projection screen. In spaces such as classrooms, conference rooms, and public assembly halls, where the space is often used for presentations, and in home entertainment rooms, it is common that the projector unit be installed as a more or less permanent fixture in the space. Often, the projector will be suspended from an overhead structure, such as a building floor/ceiling assembly or roof, in order to give the projector an unobstructed projection path and to protect it from damage by inadvertent contact. It is generally desirable that the mount be adjustable over a wide range of positions to enable proper aiming and focusing of the projector. Projectors, particularly LCD, CRT, and DRP projectors designed for frequent use in a setting such as described above are quite expensive, h addition, the spaces where the projector is installed may be left unsecured for periods of time or left unattended. Consequently, a problem is that projector units are attractive targets for theft, vandalism and other tampering. There are many different makes and models of mountable projectors commercially available today. There is no single standard for mounting attachments in the industry, and consequently, the mounting attachment fixture configurations differ widely between manufacturers. A consequent problem with available mounting devices to date has been that mounts are not generally interchangeable between projector makes, and therefore, mounts must be made in a large variety of separate configurations. The industry would benefit from a single universal projector mount that can be fitted to mount projectors of a variety of different makes and models.

SUMMARY OF THE INVENTION The present invention is directed to a universal projector mount that meets the need of the industry for a single universal projector mount that can be fitted to mount projectors of a variety of different makes and models. According to an embodiment of the invention, a plurality of adjustable arms are operably coupled with an interface plate that is in turn attached to a standard projector mount on the fixed structure from which the projector will be hung. The arms are adjustable radially and longitudinally to virtually any position so as to accommodate various fastener or fastener receiving locations on different makes and models of projectors.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a universal projector mount according to an embodiment of the present invention; Fig. 2 is an exploded view of the universal projector mount of Fig. 1; Fig. 3 is a perspective view of the universal projector mount of Fig. lwith an overhead projector mount attached thereto; Fig. 4 is a perspective view of the universal projector mount of Fig. 1 with the arms positioned in an extended position; Fig. 5 is another perspective view of the universal projector mount of Fig. 1; Fig. 6 is a perspective view of another universal projector mount according to the present invention; Fig. 7 is a rear elevation view of the universal projector mount of Fig. 6; Fig. 8 is a front elevation view of the universal projector mount of Fig. 6; Fig. 9 is a top plan view of the universal projector mount of Fig. 6; Fig. 10 is a side elevation view of the universal projector mount of Fig. 6; Fig. 11 is a perspective view of the universal projector mount of Fig. 6 with parts removed for clarity; and Fig. 12 is a rear elevation view of the universal projector mount of Fig. 6 with parts removed.

DETAILED DESCRIPTION OF THE INVENTION The universal projector mount 10 of the present invention, as depicted in Figs. 1 and 2, generally includes a mount interface 12 and amis 14. Mount interface 12 generally includes central member 16 having studs 18 for detachably receiving an overhead projector mount 20. Overhead projector mount 20 is lαiown in the art and more fully described in co- pending U.S. Utility Patent Application No. 10/821,659, commonly owned by the owners of the present invention and hereby incorporated herein in its entirety by reference. Central member 16 has a recessed portion 22 recessed from peripheral margin 24. Elongate slots 26 are defined in recessed portion 22 and arranged just inside peripheral margin 24. Elongate slots 26 include curved slots 27 at the corners and generally straight slots 27a along the sides. Central aperture 28 may be provided if desired to lighten the structure. Each arm 14 includes elongate beam portion 30 and foot 32. Elongate beam portion 30 may have a generally u-shaped cross section with a web 34, sidewalls 36, and end wall 37. Web 34 defines one or more slots 38 along its longitudinal axis. End wall 37 has an aperture 40 defined therein, which may be threaded for receiving a fastener 42. Foot 32 may be generally L-shaped, with interface flange portion 44 and projector attachment ear 46. Interface flange portion 44 defines slot 48, through which fastener 42 is received to secure foot 32 to beam portion 30. Projector attachment ear 46 has an aperture 49 defined therein for receiving a fastener 50 to attach foot 32 to a projector 52. Each arm 14 is fastened to central member 16 with a threaded fastener 54 extending tlirough one of elongate slots 26 in central member 16 and slot 38 into threaded nut 56. To attach universal projector mount 10 to a projector 52, each fastener 54 is loosened, enabling fastener 54 to slide within the elongate slot 26 through which it extends. Further, slot 38 enables arm 14 to slide radially and rotate relative to central member 16. Each arm 14 may be positioned so that aperture 49 of attachment ear 46 corresponds with an attachment fixture on projector 52. Once arm 14 is properly positioned, fastener 54 is tightened to secure arm 14 in the desired position and foot 32 is fastened to the projector 52 with a fastener 50 through aperture 49. If needed, each fastener 42 may be loosened, enabling foot 32 to slide vertically in order to adjust the spacing of central member 16 from projector 52. Once in the desired position, fastener 42 may be tightened to secure foot 32 in position. With universal projector mount 10 attached to projector 52, the overhead projector mount 20 may be attached to central member 16. In the depicted embodiment, mount 10 has notches 58 corresponding to studs 18. Each stud 18 is received in a notch 58 and the overhead projector mount is secured in position with knurled nut 60. It will be appreciated that a projector attached to mount 10 may be quickly and easily separated from overhead projector mount 20 for secure storage or transport to another location by loosening knurled nuts 60 and separating central member 16 from the overhead projector mount 20. Hence, universal projector mount 10 may remain attached to the projector, while overhead projector mount 20 remains attached to a fixed structure. It will be appreciated that each ami 14 may be adjusted so that aperture 49 may be positioned in virtually any position inside a radius defined by the length of arm 14 around fastener 54. Also, each arm 14 may be attached to central member 16 with the fastener 54 through any of elongate slots 26. Hence, mount 10 is adjustable to a virtually unlimited number of configurations to correspond with nearly any geometric arrangement of fastener receiving locations on a given projector 52. It will also be appreciated that, although four arms 14 are depicted in this application, any other number of arms 14, from two to eight or more may be used within the scope of the present invention. Another embodiment of universal projector mount 10 is depicted in Figs. 6-12. The universal projector mount 10, as depicted in Figs. 6-12, generally includes base plate 66, universal joint portion 68, and mount interface 70. Base plate 66 may be substantially flat as depicted here or differently shaped to adapt to mounting to a variety of surfaces. Base plate 66 has a plurality of apertures 72 at the periphery thereof adapted to accept fasteners for securing base plate 66 to a surface of a supporting structure. Base plate 66 is operably attached to universal joint portion 68. As can be seen in Figs. 6 and 7, though not depicted here base plate 66 may be connected to universal joint portion 68 by large threaded mount 74. The term base plate 66 is defined for the purposes of this application to encompass portions of overhead projector mount 20 used for securing overhead projector mount 20 to a structure. Base plate 66 may include structures such as struts and tubes that may be used to support universal projector mount at a distance from a building structure. Referring to Figs. 9 and 10, universal joint portion 68 generally includes base plate yoke 76, cross portion 78, and mount interface yoke 80. Base plate yoke 76 is attached to cross portion 78 at pivot 82 to allow rotation of base plate yoke 76 and, consequently, base plate 66 about a first axis. Base plate yoke 76 defines curved slot 84 tlirough which fastener 86 may be inserted and through which fastener 86 may be tightened to secure base plate yoke 76 rotationally to cross portion 78 thus locking base plate yoke 76 in position relative to cross portion 78. Mounting interface yoke 80 is pivotably secured to cross portion 78 at pivot 88. Mounting interface yoke 80 may be rotationally secured to cross portion 78 relative to pivot 88 by locking fastener 90 thus locking mount interface yoke 80 to cross portion 78 in a specific orientation about a second axis which is substantially perpendicular to the first axis. Referring particularly to Figs. 11 and 12, mount interface yoke 80 further includes attachment plate 92. Attachment plate 92 defines notches 94 which are adapted to interface with knurled nut 96 to secure attachment plate 92 and thus mount interface yoke 80 to mount interface 70. The term base plate 66 is defined for the purposes of this application to encompass portions of overhead projector mount 20. Mount interface 70 generally includes central member 98, arms 100, and attachment ears 102. Central member 98 supports studs 104 and is pierced by circumferential slots 106 near its periphery. Studs 104 are located to align with notches 94 of attachment plate 92. Thus studs 104 can receive knurled nut 96 to secure attachment plate 92 to central member 98. Circumferential slots 106 may number 4, but his number should not be considered limiting. Arms 100 are secured to central member 98 by arm fastener 108. Arm fastener 108 may be, for example, a screw or bolt. Arm fastener 108 may be secured anywhere along the length of circumferential slots 106. Arms 100 include first section 110, and second section 112. First section 110 and second section 112 are telescopically slidable relative to one another so that the length of arms

100 may be adjusted. For example, second section 112 may include arm slot 114 adapted to slideably engage with fastener 116 which is secured to first section 110. Fastener 116 may be tightened to secure first section 110 to second section 112 at a desired degree of telescopic elongation to fix the length of arm 100. Attachment ears 102 are supported at distal end 118 of amis 100 via adjustment stud 120. Adjustment stud 120 may be screwed into threaded aperture 122 at the distal end 118 of arm 100. Lock nut 124 may be utilized on adjustment stud 120 to secure attachment ears 102 at a desired orientation. Apertures 126 pierce attachment ears 102. Apertures 126 are adapted to receive fasteners to secure attachment ears 102 to a projector (not shown). In operation base plate 66 may be secured to any convenient surface or fixed structure to which it is desired to secure universal projector mount 10. After base plate 66 is secured, universal joint portion 68 may be secured to base plate 66. Mount interface 70 may be secured to projector or any other device that it is desired to mount and then mount interface 70 is secured to universal joint portion 68. Universal joint portion 68 may then be adjusted to align the projector to aim it as desired. Mount interface 70 may be secured to universal joint portion 68 via attachment plate 92. Attachment plate 92 is positioned so that notches 94 engage to studs 104 and knurled nuts 96 may then be tightened to secure mount interface 70 to universal joint portion 68. Universal joint portion 68 may be moved to a plurality of positions by adjusting base plate yoke 76 relative to cross portion 78 and mount interface yoke 80 relative to cross portion 78. Once a desired position is achieved, fastener 86 and locking fastener 90 may be tightened to secure universal joint portion 58 in a desired orientation. When attaching a projector to mount interface 70, arms 100 may be adjusted positionally within circumferential slots 106 to any desired location, h addition, arms 100 may be rotated relative to circumferential slots 106 to any desired angle. First section 110 and second section 112 may be adjusted telescopically relative to each other to adjust arm 100 to any necessary length. Attacliment ears 102 may be adjusted, both angularly relative to the distal end

118 of arms 100, and in a degree of offset between the peripheral ends of arms 100 and attachment ears 102 by screwing adjustment stud 120 into or out of threaded aperture 122. Once a desired adjustment is achieved, lock nut 124 may be tightened on adjustment stud 120 to lock adjustment ears 102 relative to the peripheral end of arms 100. Thus it will be appreciated that by making these multiple adjustments, apertures 126 on attachment ears 102 may be adjusted to align with virtually any arrangement of attachment positions on any projector that may be presented. Further, mount interface 70 may be quickly and easily be separated from universal joint portion 68 by loosening knurled nuts 96 and separating attachment plate 92 from central member 98. When the mount is separated in this way, the projector may be detached for secure storage to for transport to another location without detaching the projector from mount interface 70 or universal joint 68 from the fixed structure to which it is mounted. A person of ordinary skill in the art will appreciate that the concepts of the present invention can be modified to incorporate one or more locks that prevent the projector from being detached from the universal projector mount 10 and/or that prevent the orientation of the projector from being changed. It is contemplated that features disclosed in this application, as well as those described in the above applications incorporated by reference, can be mixed and matched to suit particular circumstances. Various other modifications and changes will be apparent to those of ordinary skill.

Claims

1. A universal projector mount for mounting a projector to a structure, comprising: a base plate securable to the structure; a mount interface comprising a central member, operably connected to the base plate, and a plurality of arms, each arm being operably attached to the central member at a pivoting attachment and being free to pivot substantially in a common plane, each ami supporting at its peripheral end an attachment member connectable to an attachment fixture on the projector the attachment member being adjustable in a direction substantially perpendicular to the plane and wherein at least one of the plurality of arms is adjustable such that a length from the pivoting attachment to the peripheral end may be varied.

2. The universal projector mount as claimed in claim 1, further comprising a lockable universal joint interposed between the base plate and the mounting interface.

3. The universal projector mount as claimed in claim 1, in which at least one of the arms further comprises a first section and a second section, the first section being telescopically slidable relative to one another.

4. The universal projector mount as claimed in claim 1, in which the pivoting attachment is movable substantially along a perimeter of the central member and can be fixed at locations substantially along the perimeter of the central member.

5. The universal projector mount as claimed in claim 2, in which the mount interface is removably attachable to the universal joint.

6. A method of mounting a projector to a structure, comprising the steps of: securing a base plate to the structure securing a mounting interface to the projector, the mounting interface comprising: a central member, and a plurality of arms, each arm being operably attached to the central member at a pivoting attachment, each arm supporting at its peripheral end an attachment member cormectable to an attachment fixture on the projector; pivoting and slidably adjusting the arms substantially in a common plane until each attachment member is aligned with a respective attachment fixture; adjusting each attachment member in a direction substantially perpendicular to the plane until the attachment member is in apposition with the respective attachment fixture; attaching each attachment member to its respective attachment fixture; and securing the mounting interface to the base plate.

7. The method as claimed in claim 6, further comprising the steps of: attaching a universal joint between the base plate and the mounting interface; adjusting the universal joint to align the projector; and securing the universal joint in a desired aligned position.

8. The method as claimed in claim 6, in which at least one of the arms further comprises a first section and a second section, the first section being telescopically slidable relative to the second section; and further comprising the steps of slidably adjusting the first section relative to the second section; and securing the first section relative to the second section.

9. The method as claimed in claim 6, further comprising the steps of slidably adjusting the position of the pivoting attacliment substantially along the perimeter of the central member; and securing the pivoting attacliment at a desired location substantially along the perimeter of the central member.

10. A universal projector mount for mounting a projector to a structure, comprising: means for securing the universal projector mount to a structure; means for interfacing with the projector comprising a central member; means for pivotable attachment to the central member, the means for pivotable attachment being pivotable substantially in a common plane and adjustable such that a length from the central member to a peripheral end of the means for pivotable attachment is variable; means for adjustment in a direction substantially perpendicular to the plane; and means for attachment to an attachment fixture on the projector.

11. The universal projector mount as claimed in claim 10, further comprising means for articulation between the means for interfacing with the projector and the means for securing the universal projector mount.

12. The universal projector mount as claimed in claim 11, further comprising means for locking the means for articulation.

13. The universal projector mount as claimed in claim 11, further comprising means for removably attaching the means for interfacing to the means for articulation.

14. The universal projector mount as claimed in claim 10, in which the means for pivotable attacliment comprises a first section and a second section, the first section being telescopically slidable relative to one another.

15. The universal projector mount as claimed in claim 10, in which the means for pivotable attachment comprises a movable attachment with the central member whereby the means for pivotable attachment may be positioned at a variety of locations about a perimeter of the central member.

16. A universal projector mount bracket for mounting any of a plurality of known projectors on a fixed structure, each projector having a unique set of bores for attaching the projector to the mount bracket by means of fasteners disposed therein, the mount bracket comprising a central member and a plurality of elongate arms, each arm having a pair of opposing ends and including a projector attachment portion proximate one of the ends, each arm operably coupled to the central member so as to be selectively rotatably and axially positionable relative to the central member whereby each attachment portion is selectively positionable to conespond with the location of one of the unique set of bores of the projector.

17. The mount bracket of claim 16, wherein the attachment portion of each arm is selectively adjustably positionable relative to the arm.