The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 31, 1991
Filed:
Sep. 27, 1990
Arnold R Bone, Needham, MA (US);
John J Murphy, Needham, MA (US);
Dennison Manufacturing Company, Framingham, MA (US);
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.