Bi-directional advance gear having a torque limiting clutch
US4702122A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 2, 1986 |
| Grant date | Oct 27, 1987 |
| Priority date | — |
| Expiry date | Sep 2, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19888
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A bi-directional advance gear having a torque limiting radial friction clutch is disclosed. The friction clutch comprises an annular member having an inner and outer periphery and having gear teeth defined by its outer periphery and radially inwardly projecting teeth on its inner periphery. A flat web substantially closes one face of the annular member to provide a shallow recess bounded by the projecting teeth and defines an opening concentric to the annular member. An inner member having a hub portion is rotatably mounted in the opening and has a pinion gear at one end. The other end of the hub has a plurality of radially extending rosette-shaped springs contained in the recess. Each spring has a pair of radially extending leg portions joined by an arcuate portion. Each arcuate portion has a lobe biased into engagement with the inwardly projecting teeth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.