Apparatus for amplifying a load

Details Apparatus for amplifying a load Apparatus for amplifying a load

1995-01-30

1996-07-16

Dang, Hoang C.

Wells

Packers or plugs

With expanding anchor

166 72, E21B 2302

Patent

active

055358233

ABSTRACT:
Apparatus (50) for amplifying a load applied by a wireline to a tool in a borehold includes a housing (4). A first coupling device (51) couples the wireline to the apparatus (50) and a second coupling device (60) couples the tool to the apparatus (50). The second coupling device (19) is movably mounted within the housing (4) and the transmission mechanism (9, 14,16) interconnects the first and second coupling devices. The transmission mechanism permits a mechanical advantage and comprises a first linearly movable member (9) coupled to the first coupling device (51) and a second linearly movable member (16) coupled to the second coupling device (19). The first and second members (9, 16) are interconnected by a rotatable member (14) such that movement of the first member (9) rotates the rotatable member (14) to move the second member (16). The movement of the second member (16) is less than the movement of the first member (9) and so the apparatus (50) generates a mechanical advantage.

REFERENCES:
patent: 3670821 (1972-06-01), Tamplen
patent: 4043390 (1977-08-01), Glotin
patent: 4116274 (1978-09-01), Rankin et al.
patent: 4598774 (1986-07-01), Nevels et al.
patent: 4838594 (1989-06-01), Bullard
patent: 5133404 (1992-07-01), Dollison

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