Monitor and/or overload means

Details Monitor and/or overload means Monitor and/or overload means

1998-07-20

2000-11-07

Swann, Glen

Communications: electrical

Condition responsive indicating system

Specific condition

340665, G08B 2100

Patent

active

061443077

ABSTRACT:
A device which relates to the monitoring of things such as cranes and hoists and seeks to improve on known so-called capacity limiters or overload devices usually associated with the hoist or chain rope. A monitoring device for use with a crane or hoist having a drive roller with a drive shaft and a gearbox directly or indirectly attached to the drive shaft. The monitoring device includes a means of resisting rotational movement of the gearbox located between the gearbox and an adjacent rigid structure, the means between the gearbox ad the adjacent rigid structure being such as to allow a limited degree of movement of the gearbox, and there being a means to react to the movement of the gearbox associated with the means of resisting rotational movement.

REFERENCES:
patent: 3737888 (1973-06-01), Cheze
patent: 3823395 (1974-07-01), Rigney et al.
patent: 4355307 (1982-10-01), Beck
patent: 4787524 (1988-11-01), Cobb, III et al.

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