Cylinder apparatus

Details Cylinder apparatus Cylinder apparatus

1997-04-25

1999-07-13

Nguyen, Hoang

Expansible chamber devices

With guide or seal on cylinder end portion for piston or...

Non-metallic seal means between piston or member and end...

92165R, 277435, 277580, 277589, 277928, F16J 1518, F16J 1532

Patent

active

059211660

ABSTRACT:
A cylinder apparatus including a piston slidably fitted in a cylinder having a hydraulic fluid sealed therein. A piston rod is connected at one end thereof to the piston. The other end portion of the piston rod extends as far as the outside of the cylinder through a seal block fitted to an open end portion of the cylinder. The seal block retains a double seal including a rod seal that is in sliding contact with the piston rod and an O-ring that resiliently biases the rod seal toward the piston rod. The seal block is provided with a projection extending between the O-ring and the rod seal to bear a part of biasing force applied to the rod seal from the O-ring. The projection is provided at a side of the O-ring and rod seal which is remote from the piston.

REFERENCES:
patent: 2437586 (1948-03-01), Aber
patent: 3726531 (1973-04-01), Pagan et al.
patent: 4422650 (1983-12-01), Reinsma et al.
patent: 4494760 (1985-01-01), Spargo
patent: 4987826 (1991-01-01), Deppert et al.
patent: 5098071 (1992-03-01), Umetsu
patent: 5143382 (1992-09-01), Maringer
Muller, H.K., Hydraulikstangenabdichtung bei sehr hohem Druck, o+p"Ohydraulik und pneumatik" 32 (1988) No. 4, pp. 262 to 264.

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