Actuator with ring gear and method of manufacturing same
US5447095A · kind A · utility
Inventor
Key dates
| Filing date | Jul 18, 1994 |
| Grant date | Sep 5, 1995 |
| Priority date | — |
| Expiry date | Jul 18, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4927
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fluid-powered rotary actuator having a body with a cylindrical interior sidewall portion. A drive shaft extends generally coaxially within the body and is supported for rotation relative thereto. The shaft has a grooved, outwardly facing circumferential sidewall portion positioned within the body. A ring gear is positioned generally coaxially within the body and extends about the shaft with an annular space therebetween. The ring gear has a grooved, inwardly facing circumferential sidewall portion. The ring gear is formed as a separate part from the body and the ring gear grooved sidewall portion is formed prior to positioning of the ring gear in the body. The ring gear is fixedly attached to the body to prevent rotation therebetween by a weld between the ring gear and the body interior sidewall portion. A stop member is engaged by the ring gear. The stop member is axially located within the body to limit movement of the ring gear toward the body first end during assembly of the ring gear in the body. The stop member may be a stop shoulder formed integral with the body interior sidewall portion or a snap ring. In the stop shoulder embodiment, the ring gear is welded to the stop s…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.