Overload indication device for a lever hoist
AssigneeKito Corporation
InventorsMiyoshi Kito, Kazuo Igarashi
Life of this patent
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Abstract
An overload indication device for a lever hoist comprises an operating lever consisting of a main lever and a handle having one end pivoted to the main lever, a spring for normally holding the handle in an aligned position with the main lever, a magnification lever for deforming the spring by the rocking movement of the handle by a force corresponding to an overloading and a warning device for warning of the overloading, such as a buzzer, whistle or colored indicator adapted to be operated when the handle rocks to assume an angular position relative to the main lever.
Claims7
An overload indication device for use in a lever hoist, comprising:
- a handle having one end pivotably mounted to an operating main lever of a lever hoist at one end thereof, said handle being normally held in alignment with said main lever, and being movable to a position at an angle with respect to said main lever when under an overloaded condition, holding spring means connected between said handle and said main lever, said holding spring means being pivotable between a first position for holding said handle in alignment with said main lever and a second position for maintaining said handle in said angular position, and overload indication means for indicating said overload condition in response to the pivotal movement of said handle.
Dependencies are inferred from the claim text.