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:
May. 29, 1990
Filed:
Oct. 07, 1988
Lloyd T McConnell, Duncanville, TX (US);
Adtec Incorporated, San Antonio, TX (US);
Abstract
A motorized door locking mechanism comprises a base on which a bolt and a latch are reciprocally mounted. A cam plate is slideably mounted on the base for movement between first, second and third positions and is operatively connected with the bolt and latch to control the position and movement of the bolt in response to positioning of the latch and cam plate. In its first position, the cam plate holds the bolt in a forward or locked position. In its second position, the cam plate is held by the latch for as long as the door is closed while the cam plate itself holds the bolt in a retracted or unlocked position. When the unlocked door is opened, the latch releases to allow movement of the cam plate into its third position. The bolt can then move between its forward and retracted positions as long as the door remains open. Subsequent closing of the door again moves the latch and returns the cam plate to the first position for locking the bolt. A motor operatively connected to the cam plate moves the cam plate from the first to the second position. Subsequently, depending on door position and the consequent position of the latch, the cam plate is successively urged from the second position and into its third and first positions.