Electric air pump with photo-electric cutoff of pressure dial

Details Electric air pump with photo-electric cutoff of pressure dial Electric air pump with photo-electric cutoff of pressure dial

1990-10-30

1992-04-14

Bertsch, Richard A.

Pumps

Condition responsive control of pump drive motor

By control of electric or magnetic drive motor

417234, 73705, F04B 4906

Patent

active

051042959

ABSTRACT:
A vehicle tire compressor driven by attachment to the battery of a vehicle has a pressure gauge determining the output pressure. The gauge has a moving indicator indicating pressure on a dial. A photoelectric sensor can be adjustably positioned relative the dial to a pre-selected pressure such that, when the moving indicator indicates the said pre-selected pressure, the photoelectric sensor output will change, means being provided to detect this change and stop further operation of the compressor.

REFERENCES:
patent: 4300548 (1981-11-01), Jones
patent: 4614479 (1986-09-01), Liu

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