Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1989-05-08
1992-11-03
Swann, J. J.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29261, 29265, B25B 2702
Patent
active
051597438
ABSTRACT:
The hydraulically powered locking puller device comprises a base assembly about a central axis, a camming assembly circumferentially about the base assembly, and an hydraulic module axially centered within the base assembly. The base assembly has a cylindrical housing wall united to an anchor ring carrying at least two claw members and having an internally threaded cylindrical surface. The camming assembly includes a mooring ring mounted on the housing wall of the base assembly for axial movement therealong and a cam ring axially spaced from a coupler on the mooring ring. The cam ring is in camming relationship to the claw members. The hydraulic module includes a plunger with a replaceable tip, a spring retractor, a carrying ring for hoist movement of the puller, and threads for cooperative threading with the internal threads of the anchor ring to fix the hydraulic module against axial shift, but yet permit easy removal of it for servicing and replacement without disturbing any part of the relationship and elements of the base assembly and camming assembly. A shoulder within the anchor ring provides an abuttment against which the hydraulic module is lodged in assembly.
REFERENCES:
patent: 1581057 (1926-04-01), Hill
patent: 2003756 (1935-06-01), Nagel
patent: 2303560 (1942-12-01), Knight
patent: 3108792 (1963-10-01), Martin
patent: 3337943 (1967-08-01), Powell
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patent: 3908258 (1975-09-01), Barty
patent: 4007535 (1977-02-01), Brandt
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patent: 4459728 (1984-07-01), Gaquere
patent: 4648166 (1987-03-01), Tilman
Pages 7, and 73 through 82 of "Enerpac" catalog circa 1988 or 1989.
Unmarked two pages and pp. 80, 81, and 84 through 87, and 92 through 101, of OTC Power Team catalog, circa 1988 or 1989.
Posi Lock Puller, Inc.
Swann J. J.
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