Negative pressure supply apparatus for automobiles

Details Negative pressure supply apparatus for automobiles Negative pressure supply apparatus for automobiles

1986-08-05

1988-03-15

Smith, Leonard E.

Pumps

Condition responsive control of pump drive motor

By control of electric or magnetic drive motor

60397, 60410, 123198C, 417480, F16D 3102

Patent

active

047309997

ABSTRACT:
The vacuum tank is connected to an engine intake manifold, and a vacuum pump generates compulsarily a negative pressure so as to maintain the negative pressure at a predetermined setting pressure value. The vacuum pump has a diaphragm pump for discharging air in the vacuum tank a motor for driving the diaphragm pump. The vacuum tank pump is disposed in the vacuum tank. A vacuum switch assembly and the diaphragm pump are disposed on the vacuum tank. The motor is installed entirely in the vacuum tank. The volume of a negative pressure supply apparatus can be reduced, and the installing location of the negative pressure supply apparatus can be disposed at liberty.

REFERENCES:
patent: 1183129 (1916-05-01), Small
patent: 1347194 (1920-07-01), Washington
patent: 2042510 (1936-06-01), Cornelius et al.
patent: 2095475 (1937-10-01), Kittler
patent: 2278832 (1942-04-01), Cornelius
patent: 2634885 (1953-04-01), North
patent: 4070133 (1978-01-01), McCormick
patent: 4328669 (1982-05-01), Mort

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