US 12,325,458 B2
Independent rail test release mechanism
Andrew Imhof, Pittsburgh, PA (US); Sheldon Adam Benton, Murrysville, PA (US); Barrett Swygert, Lexington, SC (US); David F. Byrne, Delmont, PA (US); William A. Chisholm, Jr., Washington, PA (US); and Kevin McQuistian, East Brady, PA (US)
Assigned to HITACHI RAIL STS USA, INC., Pittsburgh, PA (US)
Filed by HITACHI RAIL STS USA, INC., Pittsburgh, PA (US)
Filed on Dec. 9, 2021, as Appl. No. 17/546,282.
Claims priority of provisional application 63/122,991, filed on Dec. 9, 2020.
Prior Publication US 2022/0177015 A1, Jun. 9, 2022
Int. Cl. B61L 5/10 (2006.01); B61L 25/06 (2006.01); B61L 27/53 (2022.01)
CPC B61L 5/10 (2013.01) [B61L 25/06 (2013.01); B61L 27/53 (2022.01)] 14 Claims
OG exemplary drawing
 
1. A test release mechanism for a railway switch machine, the test release mechanism comprising:
a block structured to attach to a lock box in order to move in conjunction with the lock box; and
a lift pin structured to be operable to selectively engage and disengage the block with a slide bar,
wherein the lift pin is operable to insert into a corresponding opening of the slide bar to engage the block with the slide bar and to be removed from the corresponding opening of the slide bar to disengage the block from the slide bar.