Walking drag line

Details Walking drag line Walking drag line

1979-04-09

1981-02-24

Love, John J.

Motor vehicles

Special driving device

Stepper

305 1, B62D 5702

Patent

active

042522048

ABSTRACT:
A walking drag line having an oxcillating wheel segment, a vertical axis roller slot coupling the wheel segment and the walking drag line, a shoe for stepping the walking drag line and a track frame assembly coupling the oscillating wheel segment and the shoe. The crankpin which is journalled into the wheel segment imparts a reciprocal motion in the wheel segment having both horizontal and vertical components. The wheel segment rotates about the axis of a roller axis pin journalled in the vertical axis roller slot and rotates on a track surface of the shoe on the curved outer surface of the wheel segment without slippage.

REFERENCES:
patent: 1287086 (1918-12-01), Olsen
patent: 2247782 (1941-07-01), Martinson et al.
patent: 2259200 (1941-10-01), Cameron et al.
patent: 2941846 (1960-06-01), Hall et al.
patent: 3114425 (1963-12-01), Adams
patent: 3249168 (1966-05-01), Klein et al.
patent: 3265145 (1966-08-01), Beitzel
patent: 3375892 (1968-04-01), Kraschnewski et al.
patent: 3500945 (1970-03-01), Barden et al.
patent: 3901341 (1975-08-01), Stoldt

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