Self-propelled vacuum cleaner with a neutral return spring

Details Self-propelled vacuum cleaner with a neutral return spring Self-propelled vacuum cleaner with a neutral return spring

2006-05-16

2006-05-16

Till, Terrence R. (Department: 1744)

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

C015S339000, C015S412000

Reexamination Certificate

active

07043794

ABSTRACT:
A self-propelled vacuum cleaner includes a base having a suction inlet. An upright housing is pivotally mounted to the base. A suction source is disposed in one of the base and the upright housing to generate an airflow at the suction inlet. A dust collection chamber is mounted to one of the base and the upright housing and communicates with the suction inlet and the suction source. A drive motor is mounted to the base. A driven wheel is operatively connected to the drive motor. A handle assembly is mounted to the upright housing, wherein the handle assembly includes an upper handle, a handle grip assembly slidably mounted to the upper handle, and a neutral return spring fastened to the upper handle and engaging the handle grip assembly to urge the handle grip assembly to a neutral position.

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