Aerial lift platform with extendable wheels

Details Aerial lift platform with extendable wheels Aerial lift platform with extendable wheels

1975-12-23

1977-08-02

Spar, Robert J.

Motor vehicles

Including one or more ski-like or runner members

With at least one surface-engaging propulsion element

180145, 180DIG2, 182 2, 212145, 214141, 280638, E02F 370

Patent

active

040390942

ABSTRACT:
An aerial lift platform apparatus has a wheeled chassis, a turret on the chassis and a boom pivoted to the turret. The wheels are carried by extendable axles, to provide increased stability. The boom is depressed to raise at least one wheel, to permit its extension and retraction. Preferably, there are four wheels on two axles, and the wheels of each axle are successively raised and then extended or retracted.

REFERENCES:
patent: 3310181 (1967-03-01), Symmank
patent: 3625381 (1971-12-01), Menzi
patent: 3656780 (1972-04-01), Nordstrom
patent: 3712398 (1973-01-01), Althaus

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