Clutch assembly
US4846011A · kind A · utility
Inventor
Key dates
| Filing date | Feb 29, 1988 |
| Grant date | Jul 11, 1989 |
| Priority date | — |
| Expiry date | Feb 29, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18696
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A slip clutch assembly has a push-pull rod on link and a motor driven threaded lead screw shaft which screws in and out of a threaded bore in the push-pull rod. A plastic generally cylindrical nut is interposed between the lead screw shaft and the bore in the push-pull member. The nut has spaced apart external rings which register in corresponding grooves in the bore in the push-pull rod. The nut has internal threads in which the lead screw turns. If the nut is prevented from moving axially by engaging the push-pull rod with a stop or load the rings on the nut slip on the grooves to prevent overload of the drive system and continued extension of the push-pull rod.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.