Self-snubbing miniature piston assembly

Details Self-snubbing miniature piston assembly Self-snubbing miniature piston assembly

1974-08-02

1976-07-20

Maslousky, Paul E.

Expansible chamber devices

With cushioning means effective over a portion only of stroke

91396, 91405, F15B 1522, F01B 1102

Patent

active

039699900

ABSTRACT:
A miniature piston assembly composed of an elongated cylinder containing a piston head which may be displaced in response to digital hydraulic signals or otherwise and which is arranged to provide self-snubbing without requiring check valves. In the side wall of the cylinder are one or more ports spaced from one or more of the distal ends of the cylinder by a predetermined distance. When the piston is in juxtaposition with a port and approaching the proximate end of the cylinder, the cylinder and the piston define an annular clearance space of ever increasing length and fluid impedance for snubbing the motion of the piston with respect to the cylinder.

REFERENCES:
patent: 2044777 (1936-06-01), Erling
patent: 2981238 (1961-04-01), Brandon
patent: 3082746 (1963-03-01), Kerridge
patent: 3296942 (1967-01-01), Nelson
patent: 3559538 (1971-02-01), Holder

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