Conveyor having self-propelled carriers and track with pivotal r

Details Conveyor having self-propelled carriers and track with pivotal r Conveyor having self-propelled carriers and track with pivotal r

1992-04-29

1992-11-24

Oberleitner, Robert J.

Railway rolling stock

Locomotives

With rack rail engaging drive

238123, B61C 1104

Patent

active

051653486

ABSTRACT:
A conveyor comprising a plurality of self-propelled carriers adapted to run along a rail, which is provided with a rack disposed at a gradient portion thereof and having a plurality of downward teeth. Each of the carriers has a gear meshable with the rack teeth and an electric motor for driving the gear. The rail is provided, at a portion of transit to the portion having the rack, with a plurality of combined ratchet pawls arranged longitudinally of the rail at a specified spacing. Each combined ratchet pawl comprises in combination a forward ratchet pawl movable only forward to escape and mesh with the gear of the carrier, and a rearward ratchet pawl movable only rearward to escape and mesh with the gear.

REFERENCES:
patent: 349624 (1886-09-01), Abt
patent: 569097 (1896-10-01), Fryer
patent: 862080 (1907-07-01), Levin
patent: 3429280 (1969-02-01), Dashew et al.
patent: 3589205 (1971-06-01), Radovic
patent: 4463683 (1984-08-01), Uttscheid
patent: 4563956 (1986-01-01), Wiechet et al.
patent: 4644873 (1987-02-01), Uttscheid
patent: 4671183 (1987-06-01), Kjita et al.

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