Battery operated portable hydromassage appliance

Details Battery operated portable hydromassage appliance Battery operated portable hydromassage appliance

1979-06-12

1981-08-11

Michell, Robert W.

Surgery

Truss

Perineal

4544, 4492, 4538, 4541, A61H 900

Patent

active

042828660

ABSTRACT:
A battery operated portable hydromassage appliance including control circuitry which senses the voltage level of the battery. When the battery voltage is below a predetermined level, the control circuitry automatically shuts the unit off so that the battery may be recharged before irreversible damage to the battery occurs. Also included is a low frequency oscillator which in combination with the low battery detector applies a pulsing input to the motor to turn the pump motor on and off and accordingly create a pulsing effect at the hydromassage appliance output.

REFERENCES:
patent: 2559678 (1951-07-01), Schroeter
patent: 3034139 (1962-05-01), Kapnick et al.
patent: 3874374 (1975-04-01), Jacuzzi
patent: 3961382 (1976-06-01), Peterson, Jr.
patent: 3965495 (1976-06-01), McNair
patent: 4086525 (1978-04-01), Ibsen et al.
patent: 4100917 (1978-07-01), Talge et al.
patent: 4139001 (1979-02-01), Macabee

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