Piston assembly structure for an hydraulic cylinder

Details Piston assembly structure for an hydraulic cylinder Piston assembly structure for an hydraulic cylinder

1990-12-03

1994-04-19

Barrett, Glenn J.

Expansible chamber devices

Displacement control of plural cylinders arranged in...

Predetermined discrete incremental adjustment positions

92 136, 92165PR, 92242, 92248, F15B 1500

Patent

active

053036379

ABSTRACT:
Portable lift structure for moving a support platform between a comparatively dry position above the surrounding deck of a liquid spa tank to a wetting position in the spa tank including two longitudinally extending structural members pivotally connected at corresponding top ends thereof to be moved between a portable and operating positions, one structural member serving as a mast to be removably mounted in the spa tank deck and the other as a platform mount, to be pivoted from above the surrounding spa tank deck to a position above the spa tank and lowered by a hydraulic cylinder and piston to a wetting position.

REFERENCES:
patent: 2976844 (1961-03-01), Goldring
patent: 3185043 (1965-05-01), Dunham
patent: 3835753 (1974-09-01), Bunyard

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