US 12,006,735 B2
Universal dogging and electronic latch retraction
Victor Bogdanov, Manchester, CT (US); Liza Alcala Escobar, Avon, CT (US); and Darren C. Eller, Madison, CT (US)
Assigned to Sargent Manufacturing Company, New Haven, CT (US)
Appl. No. 17/422,963
Filed by Sargent Manufacturing Company, New Haven, CT (US)
PCT Filed Jan. 28, 2020, PCT No. PCT/US2020/015339
§ 371(c)(1), (2) Date Jul. 14, 2021,
PCT Pub. No. WO2020/159939, PCT Pub. Date Aug. 6, 2020.
Claims priority of provisional application 62/797,712, filed on Jan. 28, 2019.
Prior Publication US 2022/0145668 A1, May 12, 2022
Int. Cl. E05B 65/10 (2006.01)
CPC E05B 65/1093 (2013.01) [E05B 65/1053 (2013.01); E05B 65/1073 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A dogging mechanism for an exit device, the exit device including a push bar configured to move between an extended position and a retracted position, the dogging mechanism comprising:
a progressive blocking element including a plurality of locking regions;
a catch configured to engage at least one of the plurality of locking regions, wherein when the catch is engaged with at least one of the plurality of locking regions the progressive blocking element blocks motion of the push bar from the retracted position toward the extended position, and wherein when the catch is disengaged with the plurality of locking regions the progressive blocking element is configured to allow motion of the push bar from the retracted position toward the extended position; and
a camming element configured to rotate between a first camming position and a second camming position, wherein when the camming element is in the first camming position the catch is engaged with at least one of the plurality of locking regions, and wherein when the camming element is in the second camming position the catch is disengaged with the plurality of locking regions, wherein the camming element is configured to rotate about an axis transverse to a direction of travel of the push bar.