Staple gun for accommodating a range of staple sizes
US3958738A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 13, 1975 |
| Grant date | May 25, 1976 |
| Priority date | — |
| Expiry date | Nov 13, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C5/1679
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A range of staple sizes, including different leg lengths as well as different leg spacings, is enabled to be handled by a single gun. The smallest leg spacing staples of the range are guided by a pair of spaced parallel inner rails of a magazine into driving position, the staples of greatest leg spacing straddle said rails and are guided by parallel outer walls of the magazine, and intermediate leg spacing staples are loosely guided by the inner rails and outer walls. A desirable alternative construction has these outer walls provided with centralizing leaf spring guides yieldable widthwise. No limitation on the leg lengths is imposed, and a spring-urged pusher in the magazine has its leading end provided with portions projecting inwardly widthwise thereof to insure advance of the narrowest as well as the widest staples.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.