Drive with overload safety coupling
US4881421A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 22, 1988 |
| Grant date | Nov 21, 1989 |
| Priority date | — |
| Expiry date | Mar 22, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19847
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A mechanical drive, especially a stepping drive which can be driven by a drive shaft (14) for the conversion of a rotary drive movement to an output rotary movement which follows a given law of movement and can be taken from an output shaft (16), is provided with a spring-biased safety coupling (22; 26; 28) which disengages upon overload. The spring (30) biasing the safety coupling is supported on a biasing element which is mounted in the drive casing (12) for movement by a given amount in the direction of an increase or reduction of the spring bias, and which is part of the output of a cam drive whose cam is coupled co-rotationally with the drive shaft or output shaft (14 and 16, respectively).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.