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:
Jun. 01, 1982
Filed:
Dec. 12, 1979
Russell W Waldo, St. Paul, MN (US);
George L Engstrom, Minneapolis, MN (US);
Ideal Security Hardware Corporation, St. Paul, MN (US);
Abstract
An automatically locking crossbolt deadlock (2). Deadlock (2) includes a vertically movable crossbolt (36) which may be moved between locked and unlocked positions. A lock button (200) is movable between a first position in which the lock button (200) positively holds crossbolt (36) in its locked position and a second position in which crossbolt (36) is free to move. A drive lever (43) is provided for moving crossbolt (36) between its locked and unlocked positions. Lock button (200) is moved from its first to its second position upon rotation of a handle (130) so that a panic exit may be accomplished without manually unlocking lock button (200). In addition, lock button (200) is movable to a third position for holding crossbolt (36) in its unlocked position to provide an anti-lock out feature. Rotatable handle (130) includes a lock cylinder (63) therein.