Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1995-09-22
1997-11-25
Swarthout, Brent A.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340443, 3404574, 34030915, 731462, 731465, B60C 2300
Patent
active
056916949
ABSTRACT:
A tire deflation alarm apparatus to be provided on a vehicle with air-filled tires, comprising: a timer for measuring a period of time from when the air pressure of a tire is set to a normal value to the time when the air pressure spontaneously drops to a dangerous value, the period of time being established beforehand; an alarm portion connected to the timer and designed to give an alarm after the period of time has elapsed; and a reset switch for resetting the timer to the zero hour. The apparatus is capable of warning the tire's spontaneous air pressure drop that inevitably occurs when allowed to stand.
REFERENCES:
patent: 4478521 (1984-10-01), Evans et al.
patent: 4574267 (1986-03-01), Jones
patent: 4612623 (1986-09-01), Bazarnik
patent: 4839749 (1989-06-01), Franklin
patent: 5006829 (1991-04-01), Miyamoto et al.
patent: 5054315 (1991-10-01), Dosjoub
patent: 5239469 (1993-08-01), Walker
Sumitomo Electric Industries Ltd.
Sumitomo Rubber Industries Ltd.
Swarthout Brent A.
Trieu Van T.
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