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US 7,621,432 B2Granted
Stapler
AssigneeSDI Corporation
InventorsChun-Hsien Chiang, I-Hui Liu
Life of this patent
Estimating the term…
Abstract
A stapler has a center of gravity and has a base assembly, a magazine assembly and a trigger assembly. The magazine assembly connects to the base assembly and has a cap. The trigger assembly connects to the base assembly and has a trigger lever and a limiting lever. The limiting lever prevents the trigger lever and the cap from pivoting excessively to keep the center of gravity of the stapler over the base assembly so that refilling the stapler is convenient.
Claims6
A stapler comprising
- a base assembly having a base having
- a front end;
- a rear end;
- a bottom bar having two opposite sides;
- and two wings protruding up from the sides of the bottom bar;
- a magazine assembly connecting pivotally to the base assembly and having
- a magazine connecting pivotally to the base and having
- a front end;
- a rear connecting end connecting pivotally to and between the wings adjacent to the rear end of the base;
- and
- a cavity defined in the magazine;
- and
- a trigger assembly connecting pivotally to the base assembly and having
- a trigger lever having
- a front end;
- a rear end;
- two opposite connecting tabs formed on the trigger lever, and each connecting tab having
- a front end;
- a rear connection end connecting pivotally to one of the wings at a location adjacent to the rear end of the base;
- and
- an intermediate section located between the front end and the rear connection end and having a pin hole;
- and
- an activating tab protruding down from the front end of the trigger lever and selectively extending through the front end of the magazine;
- a limiting lever connecting pivotally to the base selectively pressing the trigger lever down and having
- a front end;
- a rear end;
- and
- two side tabs, each side tab having
- a front end;
- a rear connection end connecting pivotally to one of the wings of said base in front of and above the location said trigger lever is connected pivotally to said wings;
- an intermediate segment defined between the front end and the rear connection end of the side tab;
- and
- a limiting slot being defined longitudinally through the intermediate segment of the side tab and having
- a front end;
- and
- a rear end in front of said rear connection end of said limiting lever;
- and
- a slide element extending through the pin holes in the trigger lever and the limiting slots in the limiting lever, being capable of sliding along the limiting slots and selectively pressing against the front ends of the limiting slots to prevent the trigger lever from pivoting further away from the magazine and the base.
35 more elements
Dependencies are inferred from the claim text.