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:
Oct. 14, 2014
Filed:
Dec. 23, 2004
Applicant:
William T. Townsend, Weston, MA (US);
Inventor:
William T. Townsend, Weston, MA (US);
Assignee:
Barrett Technology, Inc., Newton, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H 7/08 (2006.01); F16H 19/06 (2006.01); F16H 19/00 (2006.01);
U.S. Cl.
CPC ...
F16H 19/0672 (2013.01); F16H 19/005 (2013.01);
Abstract
A mechanism for pretensioning a cable, or like tension element, of a tension-element drive selectively engages the motor drives of the cable for pretensioning. The mechanism uses a sleeve on which a portion of the cable is wound, with another portion of the cable wound in an opposed direction on a drive shaft on the motor. A clutch connects the sleeve to the motor output shaft. An initiator mechanism selectively stops rotation of the sleeve and the cable portion wound on the sleeve while allowing the motor torque to act on the other end of the cable wound on the drive shaft.