Swivel motor
US8001884B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 3, 2008 |
| Grant date | Aug 23, 2011 |
| Priority date | — |
| Expiry date | Feb 23, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B15/12
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A swivel motor has a plurality of work chambers and a join system between the work chambers that joins the work chambers at least by pairs. The arrangement of the joined work chambers is carried out in such a way that the work chambers which are connected to the first pressure medium connection alternate with those which are connected to the second pressure medium connection. At least two work chambers associated with different pressure medium connections are connected to a pressure compensation element, and the pressure compensation element is formed by a compensation space that is divided by a movable dividing element. A partial compensation space is connected in each instance to at least one work chamber of a pressure medium connection, and the dividing element is held in an initial position by oppositely acting springs. The spring force characteristic is formed by a spring arrangement which comprises a plurality of springs and has at least one coil spring and one elastomer spring. At least one volume compensation space is available for the elastomer spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.