Variable pitch feed of fasteners
US5076480A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1990 |
| Grant date | Dec 31, 1991 |
| Priority date | — |
| Expiry date | Sep 27, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65C7/005
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Variable pitch feed of fasteners by a unitary, single toothed feed pawl. In a first embodiment, back-up of the fasteners is prevented using a downwardly pointed detent tooth which bits into a secondary runner bar of the fastener assemblage, preferably at a point somewhat beyond the fastener ejection axis. In a second embodiment, the secondary runner bar includes a series of lands spaced at the same pitch as the fasteners, and the detent comprises a pin biased toward the runner bar to intermittently engage the lands. Back-up of the fastener assemblage is prevented by the detent, and individual fasteners are securely positioned for ejection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.