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:
Jun. 04, 1985
Filed:
Feb. 03, 1983
Applicant:
Inventors:
Lawrence L Meyer, Canton, OH (US);
Alvin J Carli, Sebring, OH (US);
Assignee:
The Alliance Manufacturing Company, Inc., Alliance, OH (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ; F16H / ;
U.S. Cl.
CPC ...
74 8921 ; 474205 ; 226 76 ;
Abstract
A closure operator such as a garage door operator utilizes an apertured flexible tape. The tape is enclosed in a guide and a drive sprocket has teeth engaging the apertures to apply both tension and compression forces to open and close a door. The apertures are enlarged in width and length and the tape has fewer apertures per-unit-length compared to the prior art tape. This decreases the stress per-unit-area in the tape at each tooth and increases the shear strength of the webs between successive apertures to be more nearly equal to the tensile strength of the tension band areas of the tape.