Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1986-07-17
1988-10-18
Hornsby, Harvey C.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15368, A47L 906
Patent
active
047776960
ABSTRACT:
A vacuum cleaner nozzle with a retractable brush having a plate carrying strips of bristles along the forward and rearward edge thereof and having leaf springs extending from one side and cam following members extending from the opposite side. A slide having camming members in engagement with the cam following members of the brush plate. The slide and brush plate are captured in a housing into which a conduit from the vacuum source extends through the housing and out of a sole plate, which is removably secured to the top plate and against which the brush plate leaf springs bear. Projections from the slide extend through the top of the housing and move the slide laterally in one direction to bring the brush through openings along the forward and rearward edges of the sole plate against the bias of the leaf springs to extend the brush. The projections move laterally in the opposite direction to permit the springs to retract the brush. Indentations at the opposite ends of a ramp provided by the cam follower member on the brush plate latch with the camming member on the slide so as to retain the brush plate with the brushes either in extended or retracted position.
REFERENCES:
patent: 2034196 (1936-03-01), Martinet
patent: 2591262 (1952-04-01), Humphrey
patent: 2961689 (1960-11-01), Meyenhoefer
patent: 3040364 (1962-06-01), Carlberg
patent: 3667084 (1972-06-01), Valbona
patent: 3832753 (1974-09-01), Crooks
patent: 3913168 (1975-10-01), Lovgren
patent: 3952363 (1976-04-01), Lindman
patent: 4592111 (1986-06-01), Berfield
patent: 4638526 (1987-01-01), Murata et al.
Alvarez Michael A.
Hawley Clarence E.
Young H. Gerald
Hornsby Harvey C.
Lukacher Martin
Reinckens C.
The Regina Co., Inc.
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