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. 05, 1988
Filed:
Aug. 23, 1985
Applicant:
Inventor:
Jack D Davis, Eugene, OR (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B / ; H01H / ;
U.S. Cl.
CPC ...
340686 ; 200 6168 ;
Abstract
A housing is mounted interiorly of a door frame member and houses first and second switch members which move simultaneously in response to entry of a lock bolt end into a strike plate opening. A switch on the housing is in circuit with an indicating unit having illuminated door open and door locked signals and a power source. The first and second switch members are in sliding contact with one another and are displaced laterally away from the lock bolt as it moves to a door locking position. A projection on the first switch member is normally disposed in the strike plate opener.