发明授权
- 专利标题: Emergency cylinder lowering circuit with regenerative hydraulics and burst protection
- 专利标题(中): 具有再生液压和爆破保护的应急气缸降低回路
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申请号: US14207164申请日: 2014-03-12
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公开(公告)号: US09404323B2公开(公告)日: 2016-08-02
- 发明人: Gregory David Swanson , Joshua Brandon Meuth
- 申请人: Forum US, Inc.
- 申请人地址: US TX Houston
- 专利权人: FORUM US, INC.
- 当前专利权人: FORUM US, INC.
- 当前专利权人地址: US TX Houston
- 代理机构: Patterson & Sheridan, L.L.P.
- 主分类号: F16D31/02
- IPC分类号: F16D31/02 ; E21B19/15 ; F15B20/00 ; F15B13/00
摘要:
A safety system for bypassing counter balance valves of a catwalk hydraulic cylinder from a remote location in a safe and controlled manner. Oil from a base end of the hydraulic cylinder is routed around the counter balance valves and flows through a velocity fuse to a needle valve, a check valve, and a pump outlet.
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