Power assist drive upright vacuum cleaner and power assist drive

Details Power assist drive upright vacuum cleaner and power assist drive Power assist drive upright vacuum cleaner and power assist drive

1981-01-23

1982-09-07

Moore, Chris K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

180 19H, A47L 900

Patent

active

043476430

ABSTRACT:
An upright suction carpet cleaner is provided with a solid rear axle having wheels mounted on either end thereof and a power assist transmission generally medially mounted therewith. The transmission comprises a housing carrying an input pinion gear driven from the suction fan motor shaft in constant mesh with a pair of contra-rotating face gears freely rotatable upon the axle shaft. A pair of clutch assemblies selectively engage one or the other of the contra rotating face gears in timing relationship with the axle shaft, with the clutch assembly being selectively operable through a bowden cable connection to a shiftable hand grip on the cleaner handle so that slight forward pressure on the hand grip by an operator is effective to engage the forward clutch and provide power assist drive to the cleaner in a forward direction while a slight rearward pressure on the handle grip by the operator provided a power assist in reverse drive. Further, means are provided to lock the transmission in a neutral configuration when the handle is in an upright position.

REFERENCES:
patent: 2619209 (1952-11-01), Horn
patent: 3218876 (1965-11-01), Berger
patent: 3618687 (1971-11-01), Ripple et al.
patent: 3938216 (1976-02-01), Schmitz et al.
patent: 4249281 (1981-02-01), Meyer et al.

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