US 12,234,667 B1
Tamper-resistant locking and notification system for detention cells
Matt P. Heinrich, Decatur, AL (US); and Brian S. Foss, Decatur, AL (US)
Assigned to WILLO PRODUCTS COMPANY, INC., Decatur, AL (US)
Filed by Willo Products Company, LLC, Decatur, AL (US)
Filed on Aug. 10, 2023, as Appl. No. 18/447,693.
Application 18/447,693 is a continuation of application No. 17/316,215, filed on May 10, 2021, granted, now 11,732,501, issued on Aug. 22, 2022.
Application 17/316,215 is a continuation of application No. 16/421,786, filed on May 24, 2019, granted, now 11,002,041, issued on May 11, 2021.
Application 16/421,786 is a continuation of application No. 15/679,417, filed on Aug. 17, 2017, granted, now 10,316,546, issued on Jun. 11, 2019.
Application 15/679,417 is a continuation in part of application No. 15/291,242, filed on Oct. 12, 2016, granted, now 10,385,587, issued on Aug. 20, 2019.
Application 15/291,242 is a continuation of application No. 14/834,253, filed on Aug. 24, 2015, granted, now 9,482,030, issued on Nov. 1, 2016.
Claims priority of provisional application 62/467,305, filed on Mar. 6, 2017.
Claims priority of provisional application 62/443,127, filed on Jan. 6, 2017.
Claims priority of provisional application 62/040,667, filed on Aug. 22, 2014.
Claims priority of provisional application 62/062,406, filed on Oct. 10, 2014.
Int. Cl. E05B 17/20 (2006.01)
CPC E05B 17/2088 (2013.01) 20 Claims
OG exemplary drawing
 
1. A locking apparatus comprising:
a first wall including a first jamb surface, a first stop surface, and a soffit surface, the first jamb surface extending in a first direction, the first stop surface extending from the first jamb surface in a second direction transverse to the first direction, and the soffit surface extending from the first stop surface in the first direction, the first jamb surface defining a first opening configured to receive a lock bolt;
a second wall including a second jamb surface and a second stop surface, the second jamb surface extending in a third direction, the second stop surface extending from the second jamb surface in a fourth direction transverse to the third direction, the second wall defining a second opening opposite the first opening;
a first strip disposed above the lock bolt and extending from the first jamb surface;
a second strip disposed below the lock bolt and extending from the first jamb surface;
a third strip extending between the first strip and the second strip; a first channel formed in the second jamb surface and configured to receive the first strip;
a second channel formed in the second jamb surface and configured to receive the second strip; and
a third channel formed in the second stop surface and extending between the first channel and the second channel, the third channel configured to receive the third strip.