Motor vehicles – Motor supplied with power from external source
Patent
1979-04-27
1981-06-30
Love, John J.
Motor vehicles
Motor supplied with power from external source
180 13, 180 65R, 182 16, 192 97, B60K 700, E04G 120
Patent
active
042757975
ABSTRACT:
A power unit for attachment to scaffolding towers such as commonly used for overhead work in the installation of wiring, ductwork, painting, and finishing. A single power unit attached to one leg of a scaffolding tower can move, about the worksite, a large scaffolding tower assembly comprised of one or more individual scaffolding towers. Two power units working in tandem on separate legs of the scaffolding tower assemblage, provides increased maneuverability. Each power unit has separate motors to drive and to change the direction of a scaffolding tower assembly. One electric motor pivots the power unit about the scaffolding tower leg to which it is attached, thereby changing the direction of motion of the scaffolding tower assembly. Another electric motor of the power unit provides power to a drive wheel of the power unit, and consequently moves the scaffolding tower assembly. A brake prevents rotation of the drive wheel when the power unit is not in operation, thereby keeping the scaffolding tower assembly in one location. A clutch within the drive wheel mounting allows the scaffolding to be manually freewheeled about without interference from the scaffolding power unit. A power cord and an electrical control cable with a control console may be extended to any length for remote control of the scaffolding power unit and when not in use may be coiled within the unit for convenient storage.
REFERENCES:
patent: 1157408 (1915-10-01), Master
patent: 2513718 (1950-07-01), Gfrorer
patent: 3232375 (1966-02-01), Warthen
patent: 3256954 (1966-06-01), Warthen
patent: 3520382 (1977-07-01), Halsey et al.
patent: 3865203 (1975-02-01), Hibma
patent: 3930548 (1976-01-01), Wallraff
Love John J.
Mattern Jr. Roy E.
McGiehan Donn
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