US 11,702,864 B2
Automatic locking-deadbolt assembly in a door
Simon Berger, Long Beach, NY (US); and Krzysztof Marciniec, Glendale, NY (US)
Assigned to SECURITECH GROUP, INC., Maspeth, NY (US)
Filed by Securitech Group, Inc., Maspeth, NY (US)
Filed on Mar. 12, 2019, as Appl. No. 16/299,664.
Claims priority of provisional application 62/641,746, filed on Mar. 12, 2018.
Prior Publication US 2019/0277064 A1, Sep. 12, 2019
Int. Cl. E05B 63/20 (2006.01); E05B 55/12 (2006.01); E05B 63/00 (2006.01); E05B 59/00 (2006.01); E05B 17/20 (2006.01)
CPC E05B 63/20 (2013.01) [E05B 17/2007 (2013.01); E05B 17/2053 (2013.01); E05B 55/12 (2013.01); E05B 59/00 (2013.01); E05B 63/0056 (2013.01); E05B 2063/207 (2013.01); E05Y 2900/132 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A lock assembly for a door, comprising:
a lock body having a housing;
a first deadbolt operatively coupled with a first actuator supported in the housing, said first deadbolt supported for linear movement between a retracted position and an extended position and biased toward the extended position by a spring force of a spring mounted in the housing; and
a trigger mechanism mounted on the door for engagement with a door jamb upon closing of the door, said trigger mechanism in direct contact with the first deadbolt and adapted to hold the first deadbolt in the retracted position when the door is open in opposition to said spring force, and to permit movement of the first deadbolt to the extended position upon contact of the trigger mechanism with the door jamb;
wherein the trigger mechanism includes:
a base plate and an upper plate connected in a spaced apart and parallel relation,
a locking plate received between the base plate and the upper plate and pivotable between an upper position and a lower position, and
a trigger plate positioned over the locking plate and configured to cause pivoting of the locking plate from the upper position to the lower position in response to engagement of the trigger plate with the door jamb,
said base plate, upper plate, locking plate and trigger plate respectively provided with apertures which are aligned for slidingly receiving the first deadbolt therethrough;
wherein in the upper position of the locking plate, the first deadbolt is held in the retracted position by engagement with an edge of the aperture of the locking plate; and
in the lower position of the locking plate, movement of the first deadbolt through the apertures from the retracted to the extended position is permitted.