Pilot valve assembly
US8991429B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2010 |
| Grant date | Mar 31, 2015 |
| Priority date | — |
| Expiry date | Jun 17, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87072
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pilot valve assembly comprised of a pilot valve proper employing a spool to be displaced in a valve casing to bring a hydraulic pressure port and an output port into and out of communication with each other, an operation means having an operating lever with a cam member attached thereto, a pivoting shaft erected on an end plate of the pilot valve proper and connected with the manual operating lever through a universal joint, and a boot of a resilient material hermetically connected between the operation means and the end plate in such a way as to completely enshroud said universal joint, cam member and pusher, the end plate being detachably fixed to the mount member, and the boot having one end thereof connected to the operation means and having the other end hermetically gripped between the end plate and the mount member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.