Tire pressure loss indicating device

Details Tire pressure loss indicating device Tire pressure loss indicating device

1994-04-29

1996-09-17

Crosland, Donnie L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340445, 340448, 731464, 731465, 731468, 116 34R, 200 6122, B60C 2300

Patent

active

055572561

ABSTRACT:
A valve cap is screwed onto a pneumatic tire and generates an indication whether a prefilled tire pressure is still existent or not. For this purpose a valve cap (1) comprises a deflectable diaphragm (30) in an inner housing separating a pressure chamber from a reference pressure chamber. The reference pressure chamber registers the prefilled tire pressure. The diaphragm (30) is deflected toward the closed housing end when the actual existent tire pressure drops in comparison with the registered tire pressure. Onto the diaphragm (30) a permanent magnet (40) is placed, which can be in a first position (normal position of the diaphragm) or in a second position adjacent to the housing end. The check of the magnet position and the generation of an indication signal indicative of the actual tire pressure status will be executed by a hand device, which must be brought into a defined position with respect to the valve cap. The hand device comprises at least one magnet field sensor and an indicating device which generates an optic or acoustic signal to register the tire pressure status at the time of the tire check.

REFERENCES:
patent: 4658644 (1987-04-01), Coesfeld et al.
patent: 4819686 (1989-04-01), Achterholt
patent: 5025244 (1991-06-01), Huang

Affiliated with

Also associated with

Rating

Tire pressure loss indicating device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tire pressure loss indicating device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tire pressure loss indicating device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-416140