发明授权
- 专利标题: Pressure reducing valve with floating stem for make-up vent
- 专利标题(中): 减压阀带浮动阀杆,用于化妆通风口
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申请号: US245223申请日: 1980-06-16
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公开(公告)号: US4341243A公开(公告)日: 1982-07-27
- 发明人: Kurt B. Melocik
- 申请人: Kurt B. Melocik
- 申请人地址: IL Peoria
- 专利权人: Caterpillar Tractor Co.
- 当前专利权人: Caterpillar Tractor Co.
- 当前专利权人地址: IL Peoria
- 主分类号: F15B13/042
- IPC分类号: F15B13/042
摘要:
A fluid control system for controlling a fluid motor (12) wherein a pressure regulating pilot valve (10) controls a directional control valve (11) by manipulation of handle (21) associated with the pilot valve (10). The directional control valve (11) includes a make-up valve (84). The pilot valve (10) includes a spool (26) having a recess (98) providing selective communication between the backside of the movable valve member (86) of the make-up valve and an exhaust recess (100) communicating with the reservoir tank (36). A direct mechanical connection is provided from the handle (21) to the spool (26) as the result of an abutment of an upper end portion (102) of the spool (26) with a surface (49) on the plunger (28) engaged by the control handle in effecting the positive movement of the spool (26) to effect the desired communication between the recess (98) and recess (100). The spool normally is resiliently movable to effect a desired pressure regulation fluid flow through the pilot valve (10).
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