Railways – Traction – Chain
Patent
1980-03-13
1982-04-27
Reese, Randolph A.
Railways
Traction
Chain
105148, 188 61, B61B 1002, B61C 1306
Patent
active
043264662
ABSTRACT:
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 a pivoted anti-back up cam member which is normally urged by gravity in a direction to hold surfaces thereof out of engagement with the track. Each carrier further includes an actuator operable when it engages a preceding carrier or an obstacle to move the pusher dog out of engagement with the pusher lug. A spring is provided between the actuator and the anti-back up cam member so that when the actuator is operated to move the pusher dog, the cam member frictionally engages the track.
REFERENCES:
patent: 3200768 (1965-08-01), Harrison
patent: 3548752 (1970-12-01), Karlstrun
patent: 3759189 (1973-09-01), Desilets
patent: 3986458 (1976-10-01), Kling
Goldstein Albert
Parry James L.
Redden Martin J.
Acco Industries Inc.
Reese Randolph A.
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