CA2598771A1 - Stapler safety device to limit motion of striker - Google Patents
Stapler safety device to limit motion of striker Download PDFInfo
- Publication number
- CA2598771A1 CA2598771A1 CA002598771A CA2598771A CA2598771A1 CA 2598771 A1 CA2598771 A1 CA 2598771A1 CA 002598771 A CA002598771 A CA 002598771A CA 2598771 A CA2598771 A CA 2598771A CA 2598771 A1 CA2598771 A1 CA 2598771A1
- Authority
- CA
- Canada
- Prior art keywords
- striker
- housing
- bar
- power spring
- safety mechanism
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C5/00—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor
- B25C5/10—Driving means
- B25C5/11—Driving means operated by manual or foot power
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C1/00—Hand-held nailing tools; Nail feeding devices
- B25C1/008—Safety devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C5/00—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor
- B25C5/02—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor with provision for bending the ends of the staples on to the work
- B25C5/0221—Stapling tools of the table model type, i.e. tools supported by a table or the work during operation
- B25C5/0242—Stapling tools of the table model type, i.e. tools supported by a table or the work during operation having a pivoting upper leg and a leg provided with an anvil supported by the table or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C5/00—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor
- B25C5/02—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor with provision for bending the ends of the staples on to the work
- B25C5/0285—Hand-held stapling tools, e.g. manually operated, i.e. not resting on a working surface during operation
- B25C5/0292—Hand-held stapling tools, e.g. manually operated, i.e. not resting on a working surface during operation with the objects to be stapled together introduced perpendicularly to the longitudinal axis of the tool in an opening formed by an anvil and a plunger
Abstract
A safety mechanism to prevent unintended ejection of a staple or fastener in a stapler or fastening tool. A low-start version of the stapler has a handle that when pressed pivots a lever which lifts a striker and energizes a power spring. At the release point, the striker is released and accelerated under spring bias into a staple, ejecting the staple by impact blow. A high-start version has the striker stationary in the upper position as the power spring is energized. In the safety mechanism, a movable hook or arm selectively prevents the striker, and linked components thereto, from completing an operational cycle. In one embodiment the safety mechanism includes a working surface sensing button bar operating in conjunction with the hook that latches the striker. The safety mechanism can also be a pivoting lock bar that engages the working surface, which surface pivots the lock bar into engaging the power spring, handle, and/or striker thereby preventing such components from reaching the release point.
Claims (24)
1. A safety mechanism for a self-powered tool that ejects and drives fasteners into a working surface, comprising:
a body containing a striker at a front end thereof, wherein the striker slides along a path therein;
a power spring disposed in the body, biasing the striker toward a bottom of the body;
a lever hinged to the body at a location between a front end and a back end, wherein the front end of the lever is linked to the striker until a release point is reached when the lever de-links from the striker;
a handle hinged to the body and engaging the lever at the lever back end;
a locking means disposed at the front end of the body and having a first portion that is biased out of the body, wherein the locking means pivots and includes a second portion that is biased into engaging at least one of the power spring, lever, and handle to prevent at least one of the striker, power spring, lever, and handle from reaching the release point;
a biasing means engaging the locking means; and a guide track disposed at the bottom of the body, biasing a fastener into the path of the striker to be ejected by the striker.
a body containing a striker at a front end thereof, wherein the striker slides along a path therein;
a power spring disposed in the body, biasing the striker toward a bottom of the body;
a lever hinged to the body at a location between a front end and a back end, wherein the front end of the lever is linked to the striker until a release point is reached when the lever de-links from the striker;
a handle hinged to the body and engaging the lever at the lever back end;
a locking means disposed at the front end of the body and having a first portion that is biased out of the body, wherein the locking means pivots and includes a second portion that is biased into engaging at least one of the power spring, lever, and handle to prevent at least one of the striker, power spring, lever, and handle from reaching the release point;
a biasing means engaging the locking means; and a guide track disposed at the bottom of the body, biasing a fastener into the path of the striker to be ejected by the striker.
2. A safety mechanism for a self-powered tool that ejects and drives fasteners into a working surface, comprising:
a body containing a striker at a front end thereof, wherein the striker slides along a path therein;
a power spring disposed in the body, biasing the striker toward a bottom of the body;
a handle hinged to the body, the handle linked to the power spring wherein rotating the handle energizes the power spring;
a guide track disposed at the bottom of the body, biasing a fastener into the path of the striker to be ejected by the striker;
a locking means disposed at the front end of the body and having a first portion that is biased out of the body, wherein the locking means translates into the body and includes a second portion that is biased into engaging at least one of the power spring, striker and handle to prevent at least one of the striker, power spring, and handle from moving to complete a cycle to eject a staple from the guide track; and a biasing means engaging the locking means.
a body containing a striker at a front end thereof, wherein the striker slides along a path therein;
a power spring disposed in the body, biasing the striker toward a bottom of the body;
a handle hinged to the body, the handle linked to the power spring wherein rotating the handle energizes the power spring;
a guide track disposed at the bottom of the body, biasing a fastener into the path of the striker to be ejected by the striker;
a locking means disposed at the front end of the body and having a first portion that is biased out of the body, wherein the locking means translates into the body and includes a second portion that is biased into engaging at least one of the power spring, striker and handle to prevent at least one of the striker, power spring, and handle from moving to complete a cycle to eject a staple from the guide track; and a biasing means engaging the locking means.
3. The safety mechanism of claim 1, wherein the locking means includes an L
shape lock bar pivotably attached to the body near the bottom thereof.
shape lock bar pivotably attached to the body near the bottom thereof.
4. The safety mechanism of claim 1, wherein the locking means includes an extension for engaging at least one of the striker, power spring, lever, and handle.
5. The safety mechanism of claim 1, wherein the body includes a path capturing the locking means therein, and wherein the locking means is biased along the path to engage at least one of the striker, power spring, lever, and handle.
6. The safety mechanism of claim 1, wherein the locking means includes an L
shape hook assembled to a button bar with an integral spring and a slot, and wherein the hook is captured in the slot of the button bar enabling the hook to pivot and flap therein.
shape hook assembled to a button bar with an integral spring and a slot, and wherein the hook is captured in the slot of the button bar enabling the hook to pivot and flap therein.
7. A safety mechanism for a self-powered tool that ejects and drives fasteners into a working surface, comprising:
a housing having a striker slidable along a path therein;
a fastener disposed within the housing along the path of the striker;
a power spring biasing the striker into the fastener;
a pivoting release lever selectively linked to the striker;
a hooking bar pivotably engaging the housing and biased into hooking the striker at an opening to substantially immobilize the striker before the striker impacts the fastener;
a sensor bar extending from the housing at a first end and engaging the hook at a second end, wherein the sensor bar translates linearly in the housing, and the second end selectively engages the hook to generate a pivoting motion; and wherein the second end of the sensor bar engages the working surface which translates the second end of the sensor bar into the hooking bar to pivot the hooking bar against the bias and out of the path of the striker thus enabling the striker to slide along the path in the housing.
a housing having a striker slidable along a path therein;
a fastener disposed within the housing along the path of the striker;
a power spring biasing the striker into the fastener;
a pivoting release lever selectively linked to the striker;
a hooking bar pivotably engaging the housing and biased into hooking the striker at an opening to substantially immobilize the striker before the striker impacts the fastener;
a sensor bar extending from the housing at a first end and engaging the hook at a second end, wherein the sensor bar translates linearly in the housing, and the second end selectively engages the hook to generate a pivoting motion; and wherein the second end of the sensor bar engages the working surface which translates the second end of the sensor bar into the hooking bar to pivot the hooking bar against the bias and out of the path of the striker thus enabling the striker to slide along the path in the housing.
8. The safety mechanism of claim 7, wherein the hooking bar includes an L
shape with a pivot end engaging an anchoring notch formed in the housing and a hooked opposing end.
shape with a pivot end engaging an anchoring notch formed in the housing and a hooked opposing end.
9. The safety mechanism of claim 8, wherein the sensor bar includes a flared notch for receiving a portion of the hooking bar therein, wherein linear translation of the sensor bar translates the flared notch which flaps the portion of the hooking bar therein.
10. The safety mechanism of claim 7, wherein the opening in the striker includes an elongated slot to receive a hook end of the hooking bar.
11. The safety mechanism of claim 7, wherein the sensor bar includes a curled resilient cantilever arm to engage the housing creating a biasing force.
12. A stapler comprising:
a housing;
a track attached to the housing to guide staples upon the track toward a striker at a front of the stapler, the linearly translating striker including a raised position above the staples and a lowered position wherein the striker impacts a front-most staple outward from the stapler as the striker moves from the raised position to the lowered position;
a hook pivotably mounted to the housing and biased into engaging the striker at an opening therein to substantially immobilize the striker; and a button bar having a sensing end extending from a bottom of the housing in a lowered position, wherein the button bar is linked to pivot the hook, and pressing the sensing end of the button bar upward into the stapler pivots the hook to disengage from the opening releasing the striker to freely move to the lowered position a button bar having a sensing end extending from a bottom of the housing in a lowered position, wherein the button bar is linked to pivot the hook, and pressing the sensing end of the button bar upward into the stapler pivots the hook away from the opening enabling the striker to move toward the raised position.
a housing;
a track attached to the housing to guide staples upon the track toward a striker at a front of the stapler, the linearly translating striker including a raised position above the staples and a lowered position wherein the striker impacts a front-most staple outward from the stapler as the striker moves from the raised position to the lowered position;
a hook pivotably mounted to the housing and biased into engaging the striker at an opening therein to substantially immobilize the striker; and a button bar having a sensing end extending from a bottom of the housing in a lowered position, wherein the button bar is linked to pivot the hook, and pressing the sensing end of the button bar upward into the stapler pivots the hook to disengage from the opening releasing the striker to freely move to the lowered position a button bar having a sensing end extending from a bottom of the housing in a lowered position, wherein the button bar is linked to pivot the hook, and pressing the sensing end of the button bar upward into the stapler pivots the hook away from the opening enabling the striker to move toward the raised position.
13. The stapler of claim 12, wherein the button bar includes a U-shaped cantilevered arm, and the hook includes an L-shape and pivots about one end of the L
against the housing.
against the housing.
14. The stapler of claim 13, wherein the housing includes an anchoring notch receiving the pivoting end of the hook and the U-shaped cantilevered arm includes a flared opening enabling a portion of the hook to flap therein.
15. The stapler of claim 14, wherein the button bar includes a curled cantilevered arm having resilience, wherein the curl engages the housing and biases the button bar to extend from the bottom of the housing.
16. A safety mechanism for a self-powered tool that ejects and drives fasteners into a working surface, comprising:
a housing having a striker slidable along a path therein;
a fastener disposed within the housing along the path of the striker;
a power spring biasing the striker into the fastener;
a pivoting release lever selectively linked to the striker such that the striker is released when the lever is de-linked therefrom;
a lock bar having a hooked end and a projecting end pivotably disposed to the housing wherein the projecting end of the lock bar extends from a bottom of the housing;
a biasing means urging the hooked end of the lock bar into substantially immobilizing at least one of the power spring and the release lever which in turn substantially immobilizes the striker in at least one direction of travel; and wherein the projecting end of the lock bar is pushed into the housing by the working surface which pivots the hooked end out of engagement with at least one of the power spring and the release lever, thereby releasing the striker so that the striker completes an operational cycle and is biased into the fasteners.
a housing having a striker slidable along a path therein;
a fastener disposed within the housing along the path of the striker;
a power spring biasing the striker into the fastener;
a pivoting release lever selectively linked to the striker such that the striker is released when the lever is de-linked therefrom;
a lock bar having a hooked end and a projecting end pivotably disposed to the housing wherein the projecting end of the lock bar extends from a bottom of the housing;
a biasing means urging the hooked end of the lock bar into substantially immobilizing at least one of the power spring and the release lever which in turn substantially immobilizes the striker in at least one direction of travel; and wherein the projecting end of the lock bar is pushed into the housing by the working surface which pivots the hooked end out of engagement with at least one of the power spring and the release lever, thereby releasing the striker so that the striker completes an operational cycle and is biased into the fasteners.
17. The safety mechanism of claim 16, wherein the lock bar includes an elongated shape with bends at the hooked end and the projecting end both facing the rearward direction, and the hinge is forward of the projecting end.
18. The safety mechanism of claim 16, wherein the lock bar pivot is disposed on the housing proximate to a bottom edge thereof.
19. A safety mechanism for a self-powered tool that ejects and drives fasteners into a working surface, comprising:
a housing having a striker slidable along a path therein;
a fastener disposed within the housing along the path of the striker;
a power spring biasing the striker into the fastener;
a pivoting release lever selectively linked to the striker such that the striker is released when the lever is de-linked therefrom;
a lock bar having a blocking end and a projecting end movably disposed to the housing;
a biasing means urging the blocking end of the lock bar into engaging the power spring opposing the bias on the striker, and wherein the projecting end of the lock bar extends from a bottom of the housing; and wherein the projecting end of the lock bar is pushed into the housing by the working surface which moves the blocking end out of engagement with the power spring, enabling the power spring to bias the striker into the fastener.
a housing having a striker slidable along a path therein;
a fastener disposed within the housing along the path of the striker;
a power spring biasing the striker into the fastener;
a pivoting release lever selectively linked to the striker such that the striker is released when the lever is de-linked therefrom;
a lock bar having a blocking end and a projecting end movably disposed to the housing;
a biasing means urging the blocking end of the lock bar into engaging the power spring opposing the bias on the striker, and wherein the projecting end of the lock bar extends from a bottom of the housing; and wherein the projecting end of the lock bar is pushed into the housing by the working surface which moves the blocking end out of engagement with the power spring, enabling the power spring to bias the striker into the fastener.
20. The stapler of claim 19, wherein the blocking end of the lock bar pivots into a position underneath the power spring to obstruct the biasing force thereof.
21. A safety mechanism for a self-powered tool that ejects and drives fasteners into a working surface, comprising:
a housing having a striker slidable along a path therein;
a fastener disposed within the housing along the path of the striker;
a power spring biasing the striker into the fastener;
a handle pivoted against the housing;
a release lever pressed at one end into a pivoting action by the handle and selectively linked to the striker at another end such that the striker is released when the lever is de-linked therefrom;
a lock bar having a blocking end and a projecting end pivotably disposed to the housing;
a biasing means urging the blocking end of the lock bar into engaging and substantially immobilizing the handle at least in one direction, and wherein the projecting end of the lock bar extends from a bottom of the housing; and wherein the projecting end of the lock bar is pushed into the housing by the working surface and pivots the blocking end out of engagement with the handle, enabling the handle to continue pivoting the release lever into de-linking from the striker, which striker is then biased into the fasteners.
a housing having a striker slidable along a path therein;
a fastener disposed within the housing along the path of the striker;
a power spring biasing the striker into the fastener;
a handle pivoted against the housing;
a release lever pressed at one end into a pivoting action by the handle and selectively linked to the striker at another end such that the striker is released when the lever is de-linked therefrom;
a lock bar having a blocking end and a projecting end pivotably disposed to the housing;
a biasing means urging the blocking end of the lock bar into engaging and substantially immobilizing the handle at least in one direction, and wherein the projecting end of the lock bar extends from a bottom of the housing; and wherein the projecting end of the lock bar is pushed into the housing by the working surface and pivots the blocking end out of engagement with the handle, enabling the handle to continue pivoting the release lever into de-linking from the striker, which striker is then biased into the fasteners.
22. The safety mechanism of claim 21, wherein the handle includes an extension and the projecting end of the lock bar engages the extension from underneath.
23. A safety mechanism for a self-powered tool that ejects and drives fasteners into a working surface, comprising:
a housing having a back end and a striker slidable along a path therein located at a forward end thereof;
a fastener disposed within the housing along the path of the striker;
a power spring biasing the striker into the fastener;
a pivoting release lever selectively linked to the striker such that the striker is released when the lever is de-linked therefrom;
a lock bar having a blocking end and a projecting end with a sloped cam surface therebetween;
an sloped cam guide disposed on the housing and slidably engaging the sloped cam surface of the lock bar;
a biasing means urging the projecting end of the lock bar to extend from a bottom of the housing and into obstructing the bias of the power spring; and wherein the projecting end of the lock bar is pushed into the housing by the working surface against the biasing means, and which slides the cam surface of the lock bar against the cam guide to move the blocking end away from the power spring, enabling the power spring to bias the striker into the fasteners.
a housing having a back end and a striker slidable along a path therein located at a forward end thereof;
a fastener disposed within the housing along the path of the striker;
a power spring biasing the striker into the fastener;
a pivoting release lever selectively linked to the striker such that the striker is released when the lever is de-linked therefrom;
a lock bar having a blocking end and a projecting end with a sloped cam surface therebetween;
an sloped cam guide disposed on the housing and slidably engaging the sloped cam surface of the lock bar;
a biasing means urging the projecting end of the lock bar to extend from a bottom of the housing and into obstructing the bias of the power spring; and wherein the projecting end of the lock bar is pushed into the housing by the working surface against the biasing means, and which slides the cam surface of the lock bar against the cam guide to move the blocking end away from the power spring, enabling the power spring to bias the striker into the fasteners.
24. The safety mechanism of claim 23, wherein the cam surface of the lock bar and the cam guide have complementary sloped surfaces so that movement of the lock bar includes simultaneously motion in the X and Y directions.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/064,493 US7124922B2 (en) | 2005-02-23 | 2005-02-23 | Stapler safety guard |
| US11/064,493 | 2005-02-23 | ||
| US11/305,773 US7234621B2 (en) | 2005-02-23 | 2005-12-15 | Stapler safety device to limit motion of striker |
| US11/305,773 | 2005-12-15 | ||
| PCT/US2006/005684 WO2006091491A2 (en) | 2005-02-23 | 2006-02-15 | Stapler safety device to limit motion of striker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2598771A1 true CA2598771A1 (en) | 2006-08-31 |
| CA2598771C CA2598771C (en) | 2012-11-27 |
Family
ID=36927915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2598771A Active CA2598771C (en) | 2005-02-23 | 2006-02-15 | Stapler safety device to limit motion of striker |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7290692B2 (en) |
| EP (1) | EP1851011B1 (en) |
| AU (1) | AU2006216911A1 (en) |
| CA (1) | CA2598771C (en) |
| WO (1) | WO2006091491A2 (en) |
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-
2006
- 2006-02-15 EP EP06735378.9A patent/EP1851011B1/en active Active
- 2006-02-15 CA CA2598771A patent/CA2598771C/en active Active
- 2006-02-15 AU AU2006216911A patent/AU2006216911A1/en not_active Abandoned
- 2006-02-15 WO PCT/US2006/005684 patent/WO2006091491A2/en active Application Filing
-
2007
- 2007-01-04 US US11/619,986 patent/US7290692B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP1851011A2 (en) | 2007-11-07 |
| EP1851011B1 (en) | 2015-12-23 |
| US7290692B2 (en) | 2007-11-06 |
| CA2598771C (en) | 2012-11-27 |
| WO2006091491A3 (en) | 2009-04-16 |
| WO2006091491A2 (en) | 2006-08-31 |
| AU2006216911A1 (en) | 2006-08-31 |
| US20070108251A1 (en) | 2007-05-17 |
| EP1851011A4 (en) | 2010-03-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |