公开(公告)号：ITMI921965A1

公开(公告)日：1994-02-07

申请号：ITMI921965

申请日：1992-08-07

Applicant: BRIDGESTONE CORP

Inventor： NAKAO MAKOTO ,  NIHEI NORIO ,  OHISHI MASATOSHI

IPC: B60G17/00 ,  B60G20060101 ,  B60G11/46 ,  B60G17/015 ,  B60G17/019 ,  F16F9/32 ,  G01B11/14 ,  G01C3/06 ,  G01C5/00 ,  G01S17/10

公开(公告)号：DE3884506T2

公开(公告)日：1994-05-11

申请号：DE3884506

申请日：1988-07-23

Applicant: BRIDGESTONE CORP

Inventor： FUKUYAMA HIROSHI ,  MORINAGA MAKOTO ,  GOSHIMA NORIO ,  NAKAO MAKOTO ,  OONO KIYOSHI ,  WATANABE ISAO

IPC: B60C23/00 ,  B60C23/04 ,  B60C23/20 ,  B60C23/02 ,  G01L17/00

Abstract: The present invention provides a device for inspecting the pressure, temperature, etc. in the tire (1) and which is composed of a pressure sensor (9) attached to the valve (4) fixed to the tire fixing rim (2) and of which the output varies depending upon the tire internal pressure and a resonator (10) including a resonant coil (8) which resonates with an external radiation electromagnetic wave and a capacitor. The oscillation coil (30) of an oscillator (24) which generates the above-mentioned radiation electromagnetic wave is installed as projected from the main body (20) in which the main body (20) of the inspection device comprises a signal processor (25) which detects and processes any change in oscillation state which has take place at the oscillator as caused by the resonance state of the resonator (10) and a display (26) to display the result of the processing made at the signal processor (25).

公开(公告)号：DE3941364A1

公开(公告)日：1990-06-28

申请号：DE3941364

申请日：1989-12-15

Applicant: BRIDGESTONE CORP ,  MISAWA SHOKAI CO LTD

Inventor： SATO AKIRA ,  HAMA KAZUAKI ,  NAKAO MAKOTO ,  MISAWA JUNICHI ,  SUZUKI HIROYUKI

IPC: G01L5/16

Abstract: A measuring apparatus in which two opposite sides of a load receiving plate to which a load is to be applied are coupled to two sides of an inner frame enclosing the load receiving plate by means of at least four inner beams. The measuring apparatus also comprises an outer frame enclosing the inner frame, two sides of which are coupled to other two sides of the inner frame by means of at least four outer beams, whereby the load receiving plate and inner frame are supported by the outer frame. Further, strain gauges are provided on the inner and outer beams, and strains of these beams are detected by the strain gauges and measured as electrically processed and amplified.

公开(公告)号：DE3931830C2

公开(公告)日：1999-01-28

申请号：DE3931830

申请日：1989-09-23

Applicant: BRIDGESTONE CORP ,  TAIHEIYO KOGYO KK

Inventor： OHNO KIYOSHI ,  NAKAO MAKOTO ,  TAKENAKA KAZUO ,  IINUMA KAZUKI

IPC: G01L17/00 ,  B60C23/00 ,  B60C23/04 ,  B60C23/20 ,  B60C23/02

Abstract: In a tire valve suitable for detecting the pressure and temperature in a tire, the strain of the tire wheel and the like, a conductive core body of a valve core is electrically insulated from a conductive shaft, and, to a pedestal having a 1st electrode electrically shaft and a 2nd electrode electrically connected to a conductive valve stem via a core spring, a sensor having two sensor electrodes connected with the 1st and 2nd electrodes respectively is fixed.

公开(公告)号：DE3931830A1

公开(公告)日：1990-03-29

申请号：DE3931830

申请日：1989-09-23

Applicant: BRIDGESTONE CORP ,  TAIHEIYO KOGYO KK

Inventor： OHNO KIYOSHI ,  NAKAO MAKOTO ,  TAKENAKA KAZUO ,  IINUMA KAZUKI

IPC: G01L17/00 ,  B60C23/00 ,  B60C23/04 ,  B60C23/20

Abstract: In a tire valve suitable for detecting the pressure and temperature in a tire, the strain of the tire wheel and the like, a conductive core body of a valve core is electrically insulated from a conductive shaft, and, to a pedestal having a 1st electrode electrically shaft and a 2nd electrode electrically connected to a conductive valve stem via a core spring, a sensor having two sensor electrodes connected with the 1st and 2nd electrodes respectively is fixed.

公开(公告)号：DE3884506D1

公开(公告)日：1993-11-04

申请号：DE3884506

申请日：1988-07-23

Applicant: BRIDGESTONE CORP

Inventor： FUKUYAMA HIROSHI ,  MORINAGA MAKOTO ,  GOSHIMA NORIO ,  NAKAO MAKOTO ,  OONO KIYOSHI ,  WATANABE ISAO

IPC: B60C23/00 ,  B60C23/04 ,  B60C23/20 ,  B60C23/02 ,  G01L17/00

Abstract: The present invention provides a device for inspecting the pressure, temperature, etc. in the tire (1) and which is composed of a pressure sensor (9) attached to the valve (4) fixed to the tire fixing rim (2) and of which the output varies depending upon the tire internal pressure and a resonator (10) including a resonant coil (8) which resonates with an external radiation electromagnetic wave and a capacitor. The oscillation coil (30) of an oscillator (24) which generates the above-mentioned radiation electromagnetic wave is installed as projected from the main body (20) in which the main body (20) of the inspection device comprises a signal processor (25) which detects and processes any change in oscillation state which has take place at the oscillator as caused by the resonance state of the resonator (10) and a display (26) to display the result of the processing made at the signal processor (25).

公开(公告)号：DE3941124A1

公开(公告)日：1990-07-12

申请号：DE3941124

申请日：1989-12-13

Applicant: BRIDGESTONE CORP ,  MISAWA SHOKAI CO LTD

Inventor： SATO AKIRA ,  HAMA KAZUAKI ,  NAKAO MAKOTO ,  MISAWA JUNICHI ,  SUZUKI HIROYUKI

IPC: G01L5/16

Abstract: The present invention provides a measuring apparatus comprising a load receiving plate, a frame member enclosing the load receiving plate, and at least four beams coupling the load receiving plate and the frame member to each other, thereby supporting the load receiving plate. The beams are so formed as to deflect at predetermined portions thereof in response to X-, Y- and Z-axial components of a force applied to the load receiving plate under the assumption that a direction perpendicular to the load receiving plate is taken as the Z-axial direction and directions perpendicular to each other in the horizontal plane of the load receiving plate are taken as the X- and Y-axial directions, respectively, and strain gauges are provided at predetermined portions of the beams.

公开(公告)号：JPH054528B2

公开(公告)日：1993-01-20

申请号：JP9779584

申请日：1984-05-16

Applicant: BRIDGESTONE CORP

Inventor： WATANABE ISAO ,  SATO NAOMI ,  NAKAO MAKOTO ,  NAKAO TSUTOMU

IPC: B60G11/26 ,  B60G11/30 ,  B60G17/015 ,  B60G17/04 ,  B60G17/048 ,  F16F9/00 ,  F16F9/08

公开(公告)号：JPS62232501A

公开(公告)日：1987-10-13

申请号：JP7258986

申请日：1986-04-01

Applicant: BRIDGESTONE CORP

Inventor： NAKAO MAKOTO

IPC: G01B7/00 ,  B60G17/00 ,  G01B7/02

Abstract: PURPOSE:To keep high measuring accuracy, by mounting a magnet on the upper or lower part of the spring of a vehicle and generating a car height judge signal when the output voltages of a plurality of Hall elements arranged in opposed relation to said magnet exceed a reference voltage value. CONSTITUTION:In an air suspension 1, for example, a permanent magnet 5 is fixed to the cylinder 2b of a shock absorber 2 and the sensor 6 opposed to the permanent magnet 5 is fixed to the cylindrical part 3a of an outer shell 3. A plurality of Hall elements H1-Hn having the same gain are embedded in or adhered and fixed to an element holder 6a extending in an up-and-down direction at an equal pitch and successively connected to a max. value detection circuit D and comparing circuits C1-Cn. A comparing circuit judges whether the output voltage of each Hall element when the magnet 5 relatively displaces in the up-and-down direction is larger than reference voltage and generates a c..ar height judge signal only when said output voltage is larger than the reference voltage. By this method, high measuring accuracy can be kept over a long period of time without receiving the effect of contamination of oxidation.

公开(公告)号：JPS60176806A

公开(公告)日：1985-09-10

申请号：JP3294084

申请日：1984-02-23

Applicant: BRIDGESTONE CORP

Inventor： HARA ITONOSUKE ,  FUKUYAMA HIROSHI ,  MATSUMURA YASUHIRO ,  SATOU NAOMI ,  NAKAO MAKOTO ,  WATANABE ISAO ,  NAKAO TSUTOMU

IPC: B60G17/00 ,  B60G17/015 ,  B60G17/04 ,  F16F9/084

Abstract: PURPOSE:To reliably discharge a drain without changing the fitting position of a discharge valve even if the car height is changed by directing the inversion section of a cylindrical body upward in a protruded shape and providing a drain discharge valve between the lower end of an outer cylinder section and an axle. CONSTITUTION:A car height adjustment unit 14 is arranged between an axle and a car body 12, and a fixed, closed hydraulic chamber 24 is provided in the cylinder 16 of the unit 14. An inversion section 42 is provided on the longitudinal, middle point of a flexible, cylindrical body 38; an inner cylinder section 40 and an outer cylinder section 44 are coaxially arranged; the tip of the outer cylinder section 44 is fixed to a drain pan 50; and a drain discharge valve 64 is provided on the drain pan 50. Accordingly, when the car body 12 is moved up and down, a car height detector 62 detects it, the pressure in a pressure air chamber 52 is increased or decreased to adjust the height automatically. The drain generated in the chamber 52 is discharged outside via a through hole when the chamber 52 is communicated to the outside.