Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1996-12-26
1998-07-28
Till, Terrence
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15321, A47L 928
Patent
active
057847533
ABSTRACT:
A portable carpet cleaning machine has a tank for storing a cleaning solution and a hand-actuatable spray nozzle for applying the solution under pressure. A vacuum motor drives a fan which produces a vacuum in a recovery tank for storing spent solution. Air flows through the recovery tank and the vacuum fan to exhaust. A fast-acting, heat-sensitive thermostatic switch is connected in electrical circuit and in heat transfer relation with the vacuum motor winding to interrupt the flow of current in the motor winding immediately upon sensing a temperature rise in the winding above a predetermined temperature and in a very short time after overflow water is passed from the recovery tank to the vacuum fan.
REFERENCES:
patent: 4512057 (1985-04-01), Laing et al.
patent: 4827562 (1989-05-01), Blase et al.
patent: 4910828 (1990-03-01), Blase et al.
patent: 5243732 (1993-09-01), Koharagi et al.
Technical Bulletin E2-VBG-001--By-Pass Vacuum Motor by Ametek--Lamb Electric Division No Date.
Technical Bulletin E2-VT570-001--Thru-Flow Vacuum Motor by Ametek--Lamb Electric Division No Date.
Kaczmarz Kenneth A.
Mondigo Jesse V.
Palmer Gary Edward
Minuteman International, Inc.
Till Terrence
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