Automobile vacuum system for inflating tires

Details Automobile vacuum system for inflating tires Automobile vacuum system for inflating tires

1978-12-04

1980-09-23

Smith, Leonard E.

Pumps

Motor driven

Fluid motor

91313, F04B 3500, F01L 2506

Patent

active

042240131

ABSTRACT:
An air compressor for inflating pneumatic tires of a motor vehicle is particularly adapted to be powered by the negative pressure created at the intake manifold of the vehicle engine. The piston of a reciprocating air pump has a direct mechanical coupling with the plunger of a pneumatic cylinder assembly for driving the air pump. The cylinder assembly in turn is operated by the negative pressure of the intake manifold through a unique valve control system which automatically directs the negative pressure flow in a manner to reciprocate the plunger and hence, drive the air pump piston. In preferred forms, the plunger presents a greater operating area than the air pump piston whereby a pressure multiplying effect is provided to obtain the relatively high inflation pressures required for many pneumatic tires.

REFERENCES:
patent: 263338 (1882-08-01), Hudson et al.
patent: 549739 (1895-11-01), McGann
patent: 627399 (1899-06-01), Donges
patent: 1199526 (1916-09-01), Bowser
patent: 2538842 (1951-01-01), McFarland
patent: 2792785 (1957-05-01), Hayden
patent: 2798440 (1957-07-01), Hall

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