Pneumatic sequential control valve
US6357475B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 11, 2001 |
| Grant date | Mar 19, 2002 |
| Priority date | — |
| Expiry date | Jan 11, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87169
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pneumatic sequential control valve for successive aeration and deaeration of two consumers, wherein for purposes of aeration compressed air is initially applied to the first consumer and only subsequently to the second consumer, and for deaeration the compressed air is initially let off from the second consumer and only subsequently from the first consumer, comprises a valve body with connections for a compressed air line and a first consumer and second consumer, wherein a cavity is provided in the valve body, bore holes extend from the connections for the consumers and for the compressed air line to this cavity. A control slide is mounted in this cavity so as to be displaceable, wherein a control space is provided between an end side of the control slide, at which a piston surface is arranged, and the valve body, and this control space communicates, via a choke line, with the bore hole which is connected with the connection for the compressed air line, and the control slide is pretensioned in direction of its first end position by means of a spring arrangement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.