US 12,326,022 B2
Door assembly for selectively interlocking opposing doors
Ayako P. Takase, Providence, RI (US); Robert Hutton, IV, Providence, RI (US); Patrick Scott Grossman, Grand Haven, MI (US); Lynn K. Van Sickle, Coopersville, MI (US); Tommy Leon Knight, Grand Rapids, MI (US); Dylan S. Schlenvogt, Holland, MI (US); and Brian Lafrence, Holland, MI (US)
Assigned to Larson Manufacturing Company of South Dakota, LLC, Brookings, SD (US)
Filed by Larson Manufacturing Company of South Dakota, LLC, Brookings, SD (US)
Filed on Mar. 13, 2024, as Appl. No. 18/603,604.
Application 18/603,604 is a continuation of application No. 18/090,672, filed on Dec. 29, 2022, granted, now 11,952,814.
Application 18/090,672 is a continuation of application No. 17/074,385, filed on Oct. 19, 2020, granted, now 11,542,733, issued on Jan. 3, 2023.
Application 17/074,385 is a continuation of application No. 16/092,674, granted, now 10,808,438, issued on Oct. 20, 2020, previously published as PCT/US2017/027713, filed on Apr. 14, 2017.
Claims priority of provisional application 62/322,919, filed on Apr. 15, 2016.
Prior Publication US 2024/0279969 A1, Aug. 22, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. E05C 7/02 (2006.01); E05B 9/10 (2006.01); E05B 47/00 (2006.01); E05B 63/14 (2006.01); E05B 63/16 (2006.01); E06B 1/70 (2006.01); E06B 3/36 (2006.01); E06B 7/23 (2006.01); E05D 3/04 (2006.01)
CPC E05C 7/02 (2013.01) [E05B 9/10 (2013.01); E05B 47/0038 (2013.01); E05B 63/14 (2013.01); E05B 63/16 (2013.01); E06B 1/70 (2013.01); E06B 3/362 (2013.01); E06B 7/2316 (2013.01); E05D 3/04 (2013.01); E05Y 2900/132 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A door assembly for selectively interlocking first and second opposing doors each pivotably mounted at a hinge side thereof to a door frame, the door assembly comprising:
a first door handle assembly operatively mounted to the first door at a latch side of the first door opposite the hinge side thereof, and
a second door handle assembly operatively mounted to the second door at a latch side of the second door opposite the hinge side thereof,
a deadbolt assembly operatively mounted to one of the first door and the second door, the deadbolt assembly having a deadbolt movable in an unlocked state of the deadbolt assembly between extended and retracted positions,
a first deadbolt actuator operatively mounted to the first door for locking and unlocking the deadbolt assembly, and
a second deadbolt actuator operatively mounted to the second door, the first and second actuators aligned with each other and operatively engaging each other as the first and second door handle assemblies are brought proximate to each other, the deadbolt assembly lockable and unlockable via actuation of either of the operatively engaged first and second deadbolt actuators.