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. 06, 1988
Filed:
Feb. 06, 1987
Applicant:
Inventors:
Bertel S Nelson, Naperville, IL (US);
William R Danforth, deceased, late of Yorkville, IL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05G / ; F16D / ;
U.S. Cl.
CPC ...
74142 ; 7457 / ; 192 / ; 192 15 ; 192 / ;
Abstract
A differential clutch comprises a driving member having a plurality of inner circumferentially disposed clutch teeth cooperating with a lesser number of sprags resiliently urged outwardly on an intermediate member. A second set of sprags on the intermediate member cooperates with clutch teeth on a fixed member to prevent retrograde movement. Rocking back and forth of the turnable member acts through the clutch teeth and sprags to turn the intermediate member. The intermediate member is connected to a driven member, for example, for adjusting a brake, or for acting as a part of a ratchet wrench.