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:
Aug. 23, 1988
Filed:
Jan. 25, 1982
Applicant:
Inventors:
James W Raymond, Newport Beach, CA (US);
James A Millett, Costa Mesa, CA (US);
Assignee:
Winfield Locks, Inc., Costa Mesa, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F05C / ;
U.S. Cl.
CPC ...
29216913 ; 292335 ; 292333 ;
Abstract
A lock assembly is provided which contains a spring-loaded dead bolt and a spring-loaded plunger intercoupled to one another. The assembly is such that when the door is closed, the plunger is pushed in by the striker plate on the door frame, and this releases the spring-biased dead bolt and causes the dead bolt to be fully extended into the cavity in the striker plate. When that occurs, the linkage coupling the assembly to the doorknob moves to a position in which one of its members serves as a stop to prevent the dead bolt from being forced back to a retracted position until the doorknob is turned.