发明名称 |
FLUID FLOW SWITCH ASSEMBLY |
摘要 |
The flow switch assembly (10) of a fluid power apparatus comprises a fluid flow pressure operated switch (10) which activates upon the failure or degradation of fluid flow. A body (14) contains therein a blind bore (15) which receives a piston (71) biased by a spring (17) located at the bottom (13) of the bore (15). A switch housing (11) which is molded about a contact (20) is threadedly inserted into an open threaded end (16) of the bore (15). The bore (15) communicates with a fluid flow opening such that fluid pressure causes the piston (71) to retract against the spring (17). The contact (20) extends axially beyond a wall (11A) of the switch housing (11) such that a radially enlarged portion (21) provides a seat for a seal (30) which sealingly engages the radially enlarged portion (21) and a surface of the bore (15). If fluid flow should cease or fall below a predetermined pressure level, the piston (71) is displaced by the spring (17) and engages the contact (20) to complete a circuit and energize an electric motor pump which provides fluid pressure to the associated fluid power apparatus. |
申请公布号 |
WO9400863(A1) |
申请公布日期 |
1994.01.06 |
申请号 |
WO1993US05279 |
申请日期 |
1993.06.02 |
申请人 |
ALLIED-SIGNAL INC. |
发明人 |
WELD, RODNEY, CHARLES;ZANDER, RICHARD, ANTHONY |
分类号 |
H01H35/38;H01H35/40;(IPC1-7):H01H35/38 |
主分类号 |
H01H35/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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