Signals and indicators – Vehicle – Tire inflation or deflation
Patent
1981-04-29
1983-05-24
Yasich, Daniel M.
Signals and indicators
Vehicle
Tire inflation or deflation
731468, 137227, 137230, B60C 2304
Patent
active
043845436
ABSTRACT:
This invention provides a screw-on device for valve stems of automobile tires which will indicate to an automobile operator when a particular tire is under the selected standard psi. The indicator is a visible device that projects towards the outer end of the tubular member of the invention where it can be observed. The automobile operator thereupon adds air to the tire by the usual service station compressed air device and no tire guage is necessary to determine the right pressure. If insufficient pressure has been inserted in the tire the indicator will show up again, when the operator ceases adding air; if too much air has been added the device acts to relieve the excess pressure and the device will automatically close off relief flow when the standard pressure has been achieved. The pressure responsive mechanism is pre-calibrated to a particular pressure, for example 24 psi, 28 psi, 32 psi, etc.
REFERENCES:
patent: 1644193 (1927-10-01), Kennedy et al.
patent: 3738308 (1973-06-01), Barabino
patent: 3799037 (1974-03-01), Schmidt
patent: 4024829 (1977-05-01), Su
patent: 4174673 (1979-11-01), Tung et al.
patent: 4208982 (1980-06-01), Byram
patent: 4235185 (1980-11-01), Byram
Brelsford Harry W.
Yasich Daniel M.
LandOfFree
Combined underinflation indicator and relief valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Combined underinflation indicator and relief valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Combined underinflation indicator and relief valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2141581