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:
Apr. 05, 1994
Filed:
Aug. 12, 1993
Applicant:
Inventors:
James S Chang, Arlington Heights, IL (US);
Mark D Siegler, Brookfield, IL (US);
Douglas R Turner, Arlington Heights, IL (US);
Assignee:
The Chamberlain Group, Inc., Elmhurst, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P / ; E05F / ; F16D / ;
U.S. Cl.
CPC ...
192141 ; 49199 ; 1921 / ; 318266 ;
Abstract
An adjustable limit switch mechanism for controlling the operation of an electric motor of a garage door opener over a selected range of movement including a motor driven threaded shaft supporting at least one switch actuator which is adjustably positionable and restrained from rotary movement while being axially translated by rotation of the shaft. A limit switch is mounted adjacent the threaded shaft so as to be actuated as the switch actuator is translated axially on the shaft.