Monitor and/or overload means
AssigneeStreet Crane Company Limited
InventorPeter John Elliot
Life of this patent
Estimating the term…
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.
Claims12
A monitoring device, for use with a crane or hoist having a drive roller or drum with a drive shaft and a gearbox directly or indirectly attached to aid drive shaft, said monitoring device comprising a means of resisting rotational movement of the gearbox located between the gearbox and an adjacent rigid structure, the said means between the gearbox and 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 said movement of the gearbox associated with the said means of resisting rotational movement.
Dependencies are inferred from the claim text.