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:
Dec. 20, 1977
Filed:
Jun. 24, 1976
Applicant:
Inventor:
Russell W Waldo, St. Paul, MN (US);
Assignee:
Ideal Security Hardware Corporation, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
E05C / ;
U.S. Cl.
CPC ...
292335 ;
Abstract
A crossbolt deadlock having a crossbolt yieldingly urged toward a locking position relative to a cooperating strike. An actuator lever releasably holds the crossbolt in an unlocking position and has a portion engaging the strike, upon closing of the door on which the deadlock is mounted, to automatically release the crossbolt for movement into locking engagement with the strike. A spring yieldingly urges the actuator lever toward holding engagement with the crossbolt. A lock member is movable to positively lock the crossbolt selectively in locking or unlocking positions.