Altitude compensation vacuum pump control

Details Altitude compensation vacuum pump control Altitude compensation vacuum pump control

1980-08-28

1982-11-16

Freeh, William L.

Power plants

Pressure fluid source and motor

Utilizing lubricant, starter motor, cooling fluid, or fluid...

417 38, F04B 4902

Patent

active

043589286

ABSTRACT:
An altitude compensating control device for a vacuum pump supplying a vehicle accessory vacuum supply system comprising, in a preferred embodiment, a dual diaphragm pressure switch spring biased in a closing direction to actuate the pump and having an ambient pressure exposed diaphragm acting in a switch-opening direction opposed by a controlled vacuum pressure exposed diaphragm of larger area acting in a switch closing direction to provide a controlled vacuum pressure range that declines from a desired operational vacuum pressure range at sea level to a lower satisfactory vacuum level for efficient operation at higher altitudes. Other features and advantages are also disclosed.

REFERENCES:
patent: 1310683 (1919-07-01), Sherbondy
patent: 2323519 (1943-07-01), Dean
patent: 2417363 (1947-03-01), Holley, Jr.
patent: 2489424 (1949-11-01), Lee
patent: 2582483 (1952-01-01), Hallerberg
patent: 2641107 (1953-06-01), Rappl
patent: 2844003 (1958-07-01), Engles
patent: 3741684 (1973-06-01), Sobieralski
patent: 4043123 (1977-08-01), Konishi

Affiliated with

Also associated with

Rating

Altitude compensation vacuum pump control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Altitude compensation vacuum pump control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Altitude compensation vacuum pump control will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1431905