Motors: expansible chamber type – Working member position responsive motive fluid control – Venting expanding chamber
Patent
1980-05-23
1982-07-06
Maslousky, Paul L.
Motors: expansible chamber type
Working member position responsive motive fluid control
Venting expanding chamber
92164, F15B 1522
Patent
active
043376878
ABSTRACT:
The poppet trip device of the present invention is adapted for hydraulic cylinder units having a poppet axially movable within a poppet sleeve extended through the piston of the hydraulic cylinder unit. A head end of the poppet extends outwardly from the piston for engaging the head end of the cylinder in response to movement of the piston to the cylinder head end whereby the poppet is unseated and fluid communication is established through the poppet sleeve. Since the piston is spaced from the free end of the piston rod, however, engagement of the piston rod with the base end of the cylinder leaves the base end of the poppet spaced from the cylinder base end. The trip device or contact member of the present invention therefore is supported between the cylinder base end and piston for engaging the base end of the poppet in response to movement of the piston rod to the cylinder base end whereby the poppet is unseated and fluid communication is established through the poppet sleeve.
REFERENCES:
patent: 1699917 (1929-01-01), Pomeroy
patent: 2709420 (1955-05-01), Fullwood et al.
patent: 3182563 (1965-05-01), Nerlon
patent: 3448658 (1969-06-01), Arnes
patent: 3515224 (1970-06-01), Seabevg
Maslousky Paul L.
Prince Manufacturing Corporation
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