Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1996-01-30
1997-02-25
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15339, 15344, 15405, 15412, A47L 928
Patent
active
056049544
ABSTRACT:
A blower vacuum comprising a motor (10) operated by a switch (16) and located in a housing (4), a fan (14) drivable by a motor, at least one attachment member (6,106) which covers the fan and which is releasably attachable to the housing, and a safety interlock located at the interface between the housing and the attachment member comprising an actuating means (53) for activating the switch only when the attachment member is attached to the housing and a locking means (54, 42) for locking the attachment member to the housing when the motor is switched on.
REFERENCES:
patent: 2140143 (1938-12-01), Sellers et al.
patent: 2921153 (1960-01-01), Descarries
patent: 4001912 (1977-01-01), Eriksson
patent: 4336626 (1982-06-01), Hone et al.
patent: 4398316 (1983-08-01), Scott et al.
patent: 4694528 (1987-09-01), Comer et al.
patent: 4809398 (1989-03-01), Linduist et al.
patent: 4905343 (1990-03-01), Jailor
Sadler John
Webster Craig
Black & Decker Inc.
Dearing Dennis A.
Del Ponti John D.
Moore Chris K.
Yocum Charles E.
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