Single-piece proportional control
US6260468A · kind A · utility
15Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1999 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Sep 3, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B15/1447
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A variable displacement bent axis hydraulic unit includes a control mechanism having a control housing with a displacement feedback sleeve and spool connected by a spring. A computer controls a proportional solenoid fluid valve that is in operative fluid engagement with the end of the spool opposite its spring connection with the displacement feedback sleeve. The displacement feedback sleeve is urged by the spring into engagement with a cam member on the yoke of the bent axis unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.