Weep hole for hydraulic jack

Details Weep hole for hydraulic jack Weep hole for hydraulic jack

1975-02-03

1976-08-24

Maslousky, Paul E.

Motors: expansible chamber type

Working member position responsive motive fluid control

Venting expanding chamber

92142, 219121LM, 92249, F15B 1522, F01B 3120

Patent

active

039759865

ABSTRACT:
A laser formed hole is used as a "weep" hole in a hydraulic jack to limit the power stroke of the ram thereby permitting the use of a urethane packing on the ram instead of the usual leather packing.

REFERENCES:
patent: 1876024 (1932-09-01), Rosenberry
patent: 2835541 (1958-05-01), Rhoads
patent: 3265855 (1966-08-01), Norton
patent: 3401604 (1968-09-01), Blatt et al.
patent: 3538294 (1970-11-01), Dicks et al.
patent: 3601011 (1971-08-01), Arnes
patent: 3818805 (1974-06-01), Johansson

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