Class 188/61 - One-way

Subclass of Class 188 - Brakes
Definition: Brakes designed to prevent retrograde motion.
No. of patents: 3
Last issue date: 12/26/2000

Number	Title	Issue Date
6164602	Railroad frog assembly with multi-position holdback A railroad frog assembly is provided with a spring wing rail multi-position holdback subassembly that continuously retains the spring wing rail in each spring wing rail open position when activated by the wheels of a railcar traversing the frog assembly, ...	12/26/2000
4326466	Anti-back up device for conveyor trolley A conveyor system comprising a track along which a plurality of carriers are movable. Each carrier includes a pusher dog that is movable into and out of position for engagement by a pusher lug of a conveyor chain. Each carrier is provided with wheels, and...	04/27/1982
4296842	Pawl and ratchet mechanism An improved pawl and ratchet mechanism is disclosed wherein at least one of a plurality of pawl elements movably disposed within a housing is movable into a least one of the spaces between the teeth of a toothed track ratchet irrespective of the location ...	10/27/1981

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