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:
Jan. 11, 2005
Filed:
Dec. 26, 2002
Derek Pulis, Port Jefferson Station, NY (US);
Andrew Gavel, Huntington Bay, NY (US);
William Chen, Elmhurst, NY (US);
Derek Pulis, Port Jefferson Station, NY (US);
Andrew Gavel, Huntington Bay, NY (US);
William Chen, Elmhurst, NY (US);
The Chamberlain Group, Inc., Elmhurst, IL (US);
Abstract
Methods and apparatus for sensing barrier position in a barrier movement system are disclosed. Electrical apparatus is connected to the barrier and generates a barrier position signal representative of barrier positions which may be used by a controller to detect barrier position. The electrical apparatus can be manually adjusted to reflect a first barrier position such as a closed position. Other barrier positions can be sensed by comparing the barrier position signal to other manually adjustable position signals.