Patent ID: 7299958
Filing Date: 2007-11-27
Classification: B25C

Abstract:
1. A powered stapler comprising: a housing; a stapling engine within the housing, the stapling engine including a staple driving assembly and a rotational drive train operable to actuate the staple driving assembly, the rotational drive train including a first gear mounted for rotation on a shaft having opposite ends; a frame at least partially supporting the rotational drive train and including arcuate apertures configured to receive the opposite ends of the shaft and allow the shaft to move along an arcuate path relative to the frame such that the gear on the shaft will remain in a substantially unchanged intermeshing relation with a second gear of the drive train regardless of any movement of the shaft within the apertures in the frame; and a stack height compensation mechanism integrated with at least one of the frame and the rotational drive train of the stapling engine, the stack height compensation mechanism operable to enable the stapling engine to compensate for varying stack heights of sheets to be stapled by the powered stapler; wherein the stack height compensation mechanism includes at least one resilient member coupled to the shaft.