Valve subplate for alternative double-acting or single-acting operation of cylinder
US4947733A · kind A · utility
0Cited by
5References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 31, 1988 |
| Grant date | Aug 14, 1990 |
| Priority date | — |
| Expiry date | Oct 31, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B13/0807
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve with four passages controls a piston (15) disposed in a cylinder (16). Between the body (1) of the valve and the cylinder (16) is disposed a plate (23) having passages (24, 25) which are used and a passage (26) which is not used in FIG. 1. By turning plate (23) 180.degree., the passage (24) is located in the non-use position, while the passage (26) connects the conduits (19 and 13) in such a way as to cause the space (21) of the cylinder (16) to communicate continuously with an exhaust orifice (6).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.