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. 30, 1980
Filed:
Aug. 24, 1979
Applicant:
Inventor:
Joshua Benin, Newark, DE (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65H / ; B65H / ;
U.S. Cl.
CPC ...
242 464 ;
Abstract
An improved collet type bobbin chuck which uses mating tapered surfaces to produce radial gripping of the bobbins without dependence on centrifugal force. A manually operated spring mechanism is used to change the chuck from a bobbin releasing to a bobbin gripping mode.