Electromagnetic air pump

Details Electromagnetic air pump Electromagnetic air pump

1987-11-19

1989-08-22

Croyle, Carlton R.

Pumps

With signal, indicator, or inspection means

417360, 417418, F04B 3912, F04B 4504

Patent

active

048591521

ABSTRACT:
An air pump includes a housing body containing an electromagnetic drive mechanism for oscillating a pair of diaphragms. The diaphragms define variable volume chambers, the chambers communicating with suction and discharge ports for establishing an air flow in response to diaphragm oscillation. The drive mechanism comprises coils defining an air gap and a permanent magnet type actuator reciprocably mounted in the air gap. The top of the housing body is open to enable the actuator to be visually inspected for proper alignment within the air gap. A cover is installed over the open top of the housing body with the actuator properly installed in the air gap. The cover contains air passages communicating with the suction and discharge ports. The weight of the diaphragm can be altered to achieve a desired resonance frequency tuned to the frequency of the electrical current.

REFERENCES:
patent: 3515966 (1970-06-01), De Valroger
patent: 3606592 (1971-09-01), Madurski et al.
patent: 3825374 (1974-07-01), Kondo
patent: 3931554 (1976-01-01), Spentzas
patent: 4090816 (1978-05-01), Takahashi
patent: 4198743 (1980-04-01), Stuber
patent: 4495947 (1985-01-01), Motyeka
patent: 4505450 (1985-03-01), Saarem et al.
patent: 4608000 (1986-08-01), Tominaga
patent: 4697674 (1987-10-01), Tangorra

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