Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1975-02-10
1976-02-17
Roberts, Edward L.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
180 19H, A47L 500, B62D 100
Patent
active
039382168
ABSTRACT:
An improved mounting structure for movably mounting the handle of a power driven vacuum cleaner including spring biasing structure urging the handle to a central neutral position and permitting the user of the vacuum cleaner to effect selective forward and rearward movement of the vacuum cleaner by suitable manipulation of the handle against the action of the spring biasing structure. The spring biasing structure is defined by a cartridge which is mounted in a tubular portion of the handle. Improved bearing structures are provided for providing facilitated longitudinal reciprocation of the handle for facilitated control of the forward and reverse operation of the vacuum cleaner.
REFERENCES:
patent: 3225853 (1965-12-01), Norton et al.
patent: 3557893 (1971-01-01), Kohls
patent: 3854164 (1974-12-01), Schmitz
Malz Ute K.
Nordeen Erwin
Schmitz Joseph F.
Roberts Edward L.
Whirlpool Corporation
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