Elongated-member-driving apparatus – With means to move or guide member into driving position – Including supply magazine for constantly urged members
Reexamination Certificate
2007-05-15
2007-05-15
Sipos, John (Department: 3721)
Elongated-member-driving apparatus
With means to move or guide member into driving position
Including supply magazine for constantly urged members
C227S120000
Reexamination Certificate
active
11040122
ABSTRACT:
A spring actuated stapler includes a lever releasably linked to a striker at a lever front end. An elongated power spring is linked to the striker so that raising the lever front end deflects the power spring. The lever and power spring pivot about a common fulcrum structure. The fulcrum structure includes a rear facing surface and the lever pivots about the rear facing surface when the lever is near a lever release point. This pivot location is adjacent to the power spring, at a bottom of the structure of the fulcrum. With the lowest possible pivot location the lever retracts and releases from the striker more quickly than if the lever pivots about a higher location at a fulcrum “axial center”. The release action is therefore more consistent, and less sensitive to manufacturing variations of the stapler.
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Feng Paul Y.
Fulwider Patton LLP
Lopez Michelle
Sipos John
Worktools, Inc.
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