Device for releasing a screw jack mechanism

Details Device for releasing a screw jack mechanism Device for releasing a screw jack mechanism

1997-10-16

1999-07-13

Bagnell, David J.

Hydraulic and earth engineering

Marine structure or fabrication thereof

With work deck vertically adjustable relative to floor

405199, 405290, 521272, 254 95, 254108, 403 2, 269 7, E02B 1708, B66F 104

Patent

active

059217146

ABSTRACT:
A device for releasing of a frozen screw pressed against a contact surface uses a compression disc pre-loaded to an anticipated amount of deflection prior to mounting between the contact surface and the screw. The disc has an insert formed from a granulated material mixed with a water soluble binder, allowing to wash out the insert and cause collapse of the disc, so as to break the connection between the contact surface and the screw.

REFERENCES:
patent: 3750853 (1973-08-01), Farr
patent: 3844002 (1974-10-01), Slemmons
patent: 3979164 (1976-09-01), Kuchnir
patent: 4538938 (1985-09-01), Grzelka et al.
patent: 4923319 (1990-05-01), Dent
patent: 5139366 (1992-08-01), Choate et al.
patent: 5215411 (1993-06-01), Seegmiller
patent: 5413436 (1995-05-01), Merz
patent: 5474408 (1995-12-01), Dinitz et al.
patent: 5622422 (1997-04-01), Goldman

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