Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1998-08-07
1999-07-27
Wu, Daniel J.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340445, 340447, 340539, 731464, 731465, B60C 2300
Patent
active
059297557
ABSTRACT:
A pressure gauge for a pneumatic tire includes a casing, a pressure responsive signal-generating device disposed in the casing, an electric power source connected electrically to the signal-generating device, and a switch assembly connected electrically to the electric power source. The switch assembly includes a normally open reed switch, a magnet member and a magnet support. The reed switch is electrically connected to the electric power source. The magnet member is disposed movably in the casing to produce a magnetic field for activating the reed switch to an ON position, and is movable toward the reed switch via a centrifugal force produced upon rotation of the pneumatic tire. The magnet support is disposed adjacent to the reed switch to movably hold the magnet member, and has a biasing unit to provide a biasing action to move the magnet member away from the reed switch when the centrifugal force is absent.
REFERENCES:
patent: 4283706 (1981-08-01), Kimura et al.
patent: 5524034 (1996-06-01), Srygley et al.
patent: 5694111 (1997-12-01), Huang
Tien-Tsai Huang
Wu Daniel J.
LandOfFree
Pressure gauge having an energy-saving switch assembly for a pre does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pressure gauge having an energy-saving switch assembly for a pre, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure gauge having an energy-saving switch assembly for a pre will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-883728