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. 25, 1979
Filed:
Apr. 06, 1978
David H Youngblood, San Antonio, TX (US);
Quentin H Young, San Antonio, TX (US);
Southern Steel Company, San Antonio, TX (US);
Abstract
A dead bolt and lock bolt for a cell door have the dead bolt controlled electrically from a remote control station. The lock bolt is controlled electrically from the remote station or the door location itself. A main control lever at the control station is movable to a deadlock position for mechanically deadlocking the lock bolt in its locking position and to a release position for unlocking both the dead bolt and the lock bolt. Protective circuit means prevents the dead bolt from being moved to its extended position when the door is open and a protective deadlock latch locks the dead bolt in either its retracted position or its extended position. When the main control lever is moved to an operate position, the guard or inmate can unlock or lock the door by use of a key if the dead bolt is in its retracted position.