Title:
【発明の名称】タイヤ内圧点検装置
Document Type and Number:
Japanese Patent JP2623480
Kind Code:
B2
Abstract:
PURPOSE:To achieve a highly reliable detection of a tire internal pressure by an inexpensive device with a simplified construction, by mounting a specified resonance section on a valve of a tire to detect the state of resonance varying according to the tire internal pressure with a portable inspecting device. CONSTITUTION:A valve 4 of a tire is provided with a sensitive section 9 varying in the output thereof according to the internal pressure thereof and a resonance section 10 which contains a resonance coil 8 resonating by a radiation electromagnetic wave from outside and a capacitor. On the other hand, a portable inspector body 20 incorporates an oscillating section 24 for generating a specified electromagnetic wave, a signal processing section 25 and the like. With such an arrangement, when an oscillation coil 24a is inserted into the resonance section 10, oscillation of an oscillator 24 varies with a resonance changing according to a tire internal pressure. This resonance variation is processed with a signal processing section 25 and, for example, when the internal pressure is above a prescribed value, it is displayed by blue on a display section 26 while done by red when below the value.
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| WO/2012/157308 | TIRE AIR PRESSURE MONITOR DEVICE |
| JP3548546 | TIRE AIR PRESSURE ALARM |
Inventors:
Fukuyama Hiroshi
Morinaga Makoto
Norio Goto
Nakao Makoto
Morinaga Makoto
Norio Goto
Nakao Makoto
Application Number:
JP18454287A
Publication Date:
June 25, 1997
Filing Date:
July 23, 1987
Export Citation:
Assignee:
Bridgestone Corporation
International Classes:
G01L17/00; B60C23/04; G08C19/00; (IPC1-7): G01L17/00; B60C23/04; G08C19/00
Domestic Patent References:
| JP5374078A | ||||
| JP6181396U | ||||
| JP564839U |
Attorney, Agent or Firm:
Takeo Masuda