Portable compressed air supply with remote control

Details Portable compressed air supply with remote control Portable compressed air supply with remote control

1989-06-07

1991-10-01

Smith, Leonard E.

Pumps

Condition responsive control of pump drive motor

By control of electric or magnetic drive motor

417234, F04B 4902

Patent

active

050528947

ABSTRACT:
A motor driven compressor is supplied with power from a battery and supplies compressed air at the outlet of an air hose. Compressed air via the hose is supplied to a lifting device, for example a bellows of an invalid seat assembly. In the apparatus the output of the compressor is passed through a non-return valve so that when the compressor is turned off supplied air cannot bleed back through the compressor. A pressure switch breaks the electrical circuit should pressure build up excessively at the output. Additionally, an air dump valve is provided to enable pressure in the output line to be vented to atmosphere. Operation of the compressor is controlled by a hand control.

REFERENCES:
patent: 2719986 (1955-10-01), Rand
patent: 3479087 (1969-11-01), Burke
patent: 4188677 (1980-02-01), Zur
patent: 4614479 (1986-09-01), Liu
patent: 4621984 (1986-11-01), Fussell
patent: 4651838 (1987-03-01), Hamilton et al.

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