Steering means particularly for internal pipe bending mandrels

Details Steering means particularly for internal pipe bending mandrels Steering means particularly for internal pipe bending mandrels

1975-07-01

1976-09-14

Larson, Lowell A.

Metal deforming

Tool and/or tool holder

Including flexible or yieldable tool or support

104138G, B21D 900

Patent

active

039799417

ABSTRACT:
Steering means, particularly for use with internal pipe bending mandrels, wherein upper and lower driven wheels are mutually expanded against the pipe wall by an intermediate free-floating hydraulic cylinder, and wherein at least one of the upper and lower driven wheels are rotatably disposed to provide steering. The steering assembly is affixed as a support at one end of the mandrel and serves to keep the mandrel upright within the pipe.

REFERENCES:
patent: 2638069 (1953-05-01), Mearns
patent: 3058137 (1962-10-01), Doyle et al.
patent: 3109477 (1963-11-01), Avera et al.
patent: 3547040 (1970-12-01), Baran
patent: 3718978 (1973-03-01), Van Koevering et al.
patent: 3734428 (1973-05-01), Moritsovich et al.
patent: 3741457 (1973-06-01), Gwin et al.
patent: 3890905 (1975-06-01), Clavin

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