Tool for spreading opposed members apart

Metal working – Means to assemble or disassemble – Spreading parts apart or separating them from face to face...

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29254, B23P 1904

Patent

active

056782934

ABSTRACT:
A spreader tool (10) and method for spreading apart a pair of opposed parts (F) comprising a housing (12) having a central bore (18) with a piston (42) mounted therein for reciprocal movement. The lower end of the piston (42) has a center spreader member (45) secured thereto and fitting between a pair of side spreader members (30, 32). Upon actuation of the cylinder (42) the center spreader member (45) moves in a parallel relation to the adjacent side spreader members (30, 32) for spreading the members (F) apart. The tool (12, 12A) may be manually actuated by a ratchet handle (66) as shown in the embodiment of FIGS. 1-3, or may be hydraulically actuated by pressurized hydraulic fluid from a pump (P) as shown in the embodiment of FIGS. 4-6.

REFERENCES:
patent: 2350404 (1944-06-01), Liston
patent: 3081066 (1963-03-01), Murawski
patent: 3426752 (1969-02-01), Laico
patent: 3662994 (1972-05-01), Johns
patent: 3762688 (1973-10-01), Leonhardt
patent: 3835522 (1974-09-01), Ward
patent: 4443001 (1984-04-01), Haerer
patent: 4896862 (1990-01-01), Ganley
patent: 5048795 (1991-09-01), Vitale
patent: 5542646 (1996-08-01), Bunyan

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