Expander tool

Metal working – Means to assemble or disassemble – Coupling to conduit

Patent

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Details

29268, 81302, B23P 1904

Patent

active

044675127

ABSTRACT:
An expander tool such as for use in removing tubing from barbed fittings. The tool includes a pair of handle members having a pivotal connection therebetween. A pair of channel-shaped jaw members are operatively connected to the handle members for spreading movement in a generally parallel direction when the handle members are moved toward each other. The channel-shaped jaw members are nested with the bight portions thereof being thin and flat and in generally parallel confronting relation. The legs of the channel-shaped jaw members therefore are in overlapped relation whereby the opposite side of the thin flat bight portion of one jaw member can be positioned in close proximity to a workpiece such as the flange or elbow of a barbed fitting. The thin flat bight portions of the jaw members have slots opening outwardly of the tool, the slots each having a stepped configuration for embracing different sizes of workpieces, such as different diameters of tubing and barbed fittings.

REFERENCES:
patent: D28380 (1898-03-01), Stortz
patent: 2373478 (1945-04-01), Kuhn
patent: 2656597 (1953-10-01), Arthur
patent: 3233313 (1966-02-01), Roth
patent: 3390561 (1968-07-01), Finck
patent: 3540106 (1970-11-01), Goldman
patent: 3677129 (1972-07-01), Lyon
patent: 3980287 (1976-09-01), Nilsson
patent: 3990137 (1976-11-01), Kulba et al.
patent: 4198738 (1980-04-01), Wallace
patent: 4257135 (1981-03-01), Moebius

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