Vacuum cleaner nozzle lift device

Details Vacuum cleaner nozzle lift device Vacuum cleaner nozzle lift device

1982-10-07

1984-08-28

Moore, Chris K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

A47L 534

Patent

active

044674953

ABSTRACT:
A vacuum cleaner nozzle adjuster for adjustably positioning a nozzle opening relative to the surface being cleaned so as to accommodate surfaces of all textures in which an integral manually accessible thumb wheel, lifting cam and locking ratchet unitary member is provided that is rotatable by manual engagement to cause the lifting cam operating against a movable front wheel support for the housing to properly position the nozzle opening and a pawl engages the locking ratchet to hold the wheel and nozzle in adjusted position.

REFERENCES:
patent: 1261453 (1918-04-01), Spielman
patent: 1348585 (1920-08-01), Rosenfield
patent: 1482946 (1924-02-01), Serva et al.
patent: 1482953 (1924-02-01), Tideman
patent: 1733384 (1929-10-01), Mross
patent: 1831551 (1931-11-01), White
patent: 1850710 (1932-03-01), Fairfax
patent: 2104453 (1938-01-01), Dow
patent: 2712669 (1955-07-01), Frere et al.
patent: 2734217 (1956-02-01), Brace
patent: 2741488 (1956-04-01), Ripple
patent: 3148400 (1964-09-01), Worwag
patent: 3683448 (1972-08-01), Lagerstrom et al.
patent: 4083079 (1978-04-01), Vermilion
patent: 4167801 (1979-09-01), Erbor et al.

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