Power stapler
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 24, 1996
Issued Date -
N/A
app pub date -
Jan 12, 1994
filing date -
Nov 13, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A power stapler having a clincher provides a stitcher head for driving formed staples into a stack of sheets. A clincher box is positioned opposite the stitcher head. Clinchers located in the clincher box pivot upwardly under the force of a moving clincher bar to deform ends of the staple to pass through the sheet stack. The clincher bar or clinchers include a stop that limits retraction of the clinchers into the box. Hence, as the staple is driven by the stitcher head through the sheets, the ends of the staple are brought into engagement with the clinchers and plastically deform into a substantially inwardly curled shape. Following driving of the staple by the stitcher head, the clincher bar is actuated to rotate the clinchers upwardly toward the stack causing the curled tips of the staple to drive into the sheets. The clinchers can include grooves that are angled into alignment along parallel angled lines so that the ends of the staple pass each other and do not interfere with each other upon clinching.
First Claim
Other Claims data not available