Overload indication device for a lever hoist
US4283722A · kind A · utility
8Cited by
8References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1978 |
| Grant date | Aug 11, 1981 |
| Priority date | — |
| Expiry date | Nov 9, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/20612
- WIPO fieldHandling
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.