Control valves with safety guards
US10344889B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 28, 2017 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Jan 25, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/895
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A directional control valve comprising: a body, an actuator configured to switch the directional control valve between two or more states, a manual activation button configured to initiate actuation of the actuator when pressed, a safety member configured to slide along a guide of the body between a first position and a second position, a coupling member configured to couple the directional control valve to other directional control valves, and a guard removably disposed between the safety member and the coupling member. The safety member prevents the manual actuation button from being actuated when it is in the first position and the manual actuation button can be manually actuated when the safety member is in the second position. In addition, the guard is configured to prevent the safety member from sliding to the second position when the guard is disposed between the safety member and the coupling member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.