Stapler safety device to limit motion of striker

Details Stapler safety device to limit motion of striker Stapler safety device to limit motion of striker

2007-11-06

2007-11-06

Nash, Brian D. (Department: 3721)

Elongated-member-driving apparatus

With interlock means

C227S120000, C227S129000, C227S132000

Reexamination Certificate

active

11619986

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.

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