Air pressure detecting device for wheel

Details Air pressure detecting device for wheel Air pressure detecting device for wheel

2001-11-20

2004-02-24

Lee, Benjamin C. (Department: 2632)

Communications: electrical

Land vehicle alarms or indicators

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

C340S442000, C340S445000, C340S448000

Reexamination Certificate

active

06696936

ABSTRACT:

CROSS-REFERENCE TO RELATED APPLICATIONS
The present application claims priority under 35 USC 119 to Japanese Patent Application No. 2000-353006 filed on Nov. 20, 2000 and Japanese Patent Application No. 2001-016383 filed on Jan. 24, 2001 the entire contents thereof are hereby incorporated by reference.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an air pressure detecting device for a wheel for detecting the air pressure of a tire to allow the driver to recognize the air pressure of the tire even while the vehicle is being operated.
2. Description of Background Art
One air pressure detecting device for a wheel for allowing the driver to recognize the air pressure of a tire even while the vehicle is being operated is disclosed in Japanese Patent Laid-open No. Hei 10-44726 entitled “Tire Air Pressure Warning Device.”
According to FIG. 1 of Japanese Patent Laid-open No. Hei 10-44726, the disclosed arrangement is a tire air pressure warning device that includes a valve stem 10 (the reference numeral is from the publication) mounted on a wheel rim 1. A case 2 is disposed beneath the valve stem 10 and a transmitter 7 is housed in the case 2. A pressure detector 3 is provided together with a signal processing circuit 4 and a cell 5.
While the above tire air pressure warning device is of a structure that can be mounted on a tubeless tire, it is not suitable for use on a tire with a tube.
In order to use the tire air pressure warning device on a tire with a tube, it is necessary to attach the transmitter
7
to the tire tube. However, the transmitter
7
cannot directly be attached to the tire tube.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide an air pressure detecting device for a wheel which can be mounted on a tire with a tube.
To achieve the above object, an air pressure detecting device according to the present invention is provided for detecting the air pressure of a wheel of a vehicle which has a tire tube disposed in a tire. The air pressure detecting device is disposed between the tire tube and the rim of the wheel for detecting the air pressure of the tire wherein the air pressure detecting device includes an annular seat mounted in an opening defined in the tire tube, a lid member held in removably fitting engagement with the seat, and a detecting and transmitting unit integrally mounted in the lid member for detecting an air pressure in the tire tube and transmitting pressure information out of the detecting and transmitting unit.
The air pressure of the tire which is detected is effective based on driving information for detecting the air pressure while the vehicle is being operated. The annular seat is mounted in the opening defined in the tire tube, the lid member is removably fitted over the seat, and the detecting and transmitting unit is integrally mounted in the lid member for detecting an air pressure in the tire tube and transmitting pressure information out of the detecting and transmitting unit for the driver to know the air pressure of the tire while the vehicle is being operated.
The detecting and transmitting unit is integrally mounted in the lid member, and the lid member is held in removably fitting engagement with the seat. When the tire is to be replaced, the lid member is removed, and the detecting and transmitting unit is attached to a new tire for use.
Thus, the detecting and transmitting unit can be reinstalled for reuse. As a result, the air pressure detecting device can effectively be used for material saving.
According to the present invention, the air pressure detecting device is characterized in that an air valve is integrally mounted on the lid member for introducing air into the tire tube.
With the air valve integrally mounted on the lid member, the number of parts of the wheel is reduced. As a result, the costs of the wheel and the air pressure detecting device are lowered.
Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.


REFERENCES:
patent: 3638180 (1972-01-01), Lejeune
patent: 3828309 (1974-08-01), Yamasaki et al.
patent: 3859628 (1975-01-01), Favini
patent: 3985984 (1976-10-01), Cappa
patent: 4701742 (1987-10-01), Ruehr
patent: 4851809 (1989-07-01), McAlister
patent: 5040561 (1991-08-01), Achterholt
patent: 5119066 (1992-06-01), Ballyns
patent: 6011462 (2000-01-01), Cooper
patent: 6100798 (2000-08-01), Liang
patent: 6160474 (2000-12-01), Tsunetomi et al.
patent: 6252498 (2001-06-01), Pashayan, Jr.
patent: 10-44726 (1998-02-01), None

Affiliated with

Also associated with

Rating

Air pressure detecting device for wheel does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3300131