Fluid handling – With indicator – register – recorder – alarm or inspection means – Fluid pressure responsive indicator – recorder or alarm
Patent
1988-10-27
1989-12-05
Chambers, A. Michael
Fluid handling
With indicator, register, recorder, alarm or inspection means
Fluid pressure responsive indicator, recorder or alarm
137224, 137227, F16K 3700, F16K 1520
Patent
active
048845930
ABSTRACT:
A valve for checking tire pressure comprising a hollow cylinder, a sealing block, a plate, a spring and a flute. The hollow cylinder has a flange inwardly extending at intermediate portion thereof to form an opening and divide the hollow cylinder into upper and lower portions. The sealing block is disposed in the lower portion of the hollow cylinder and contacts with the flange to seal the opening. The sealing block is provided with a passage communicating both sides of the sealing block. The plate has a pin downwardly extending into the opening and contacting the sealing block and a seat formed on upper surface of the plate. The spring is disposed on the seat of the plate. The flute mounted on the hollow cylinder includes a base and a flute body disposed on the base. A passage is formed in the base which communicates the flute body with the upper portion of the cylinder. When the tire pressure is too low, the spring will force the sealing block moving downwardly to form a gap between the flange and the sealing block and push a stem of a tire nozzle moving downwardly, so that air contained in the tire leaks out to reach the flute and provide a sonic signal for notifying users.
REFERENCES:
patent: 1258114 (1918-03-01), Hayward
patent: 1769508 (1930-07-01), Harned
patent: 2721572 (1955-10-01), MacDonald
patent: 4594960 (1986-06-01), Nalence
Chambers A. Michael
Gans Bernard R.
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