Speed control for gravity operated trolleys

Details Speed control for gravity operated trolleys Speed control for gravity operated trolleys

1980-08-04

1983-04-26

Valenza, Joseph E.

Railways

Suspended

Single-rail type

188290, 198473, 104 89, B61B 300

Patent

active

043809596

ABSTRACT:
A gravity operated conveyor comprises a workpiece supporting trolley having at least two independent unpowered wheels for supporting the trolley on a track. One of the wheels engages the track when the trolley is empty and the other engages the track when the trolley is loaded with a workpiece. Each wheel has a speed retarding mechanism operably connected therewith so that the speed retarding force on the trolley is greater when the trolley is loaded than when the trolley is empty.

REFERENCES:
patent: 2832298 (1958-04-01), Ambli
patent: 4098375 (1978-07-01), Kornylak
patent: 4215772 (1980-08-01), Graham
patent: 4316535 (1982-02-01), Brems et al.

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