Stapler safety device to limit motion of striker
US7290692B2 · kind B2 · utility
53Cited by
48References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 4, 2007 |
| Grant date | Nov 6, 2007 |
| Priority date | — |
| Expiry date | Jan 4, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C5/0292
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.