CN1510422A - Vehicle speed detector - Google Patents
Vehicle speed detector Download PDFInfo
- Publication number
- CN1510422A CN1510422A CNA2003101180179A CN200310118017A CN1510422A CN 1510422 A CN1510422 A CN 1510422A CN A2003101180179 A CNA2003101180179 A CN A2003101180179A CN 200310118017 A CN200310118017 A CN 200310118017A CN 1510422 A CN1510422 A CN 1510422A
- Authority
- CN
- China
- Prior art keywords
- speed
- motor vehicle
- pump
- vehicle speed
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/26—Devices characterised by the use of fluids
- G01P3/28—Devices characterised by the use of fluids by using pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/36—Inputs being a function of speed
- F16H59/44—Inputs being a function of speed dependent on machine speed of the machine, e.g. the vehicle
Abstract
A vehicle speed detecting apparatus, which is capable of obtaining accurate vehicle speed and obtaining the accurate vehicle speed for a long period of time, is provided. For this purpose, the vehicle speed detecting apparatus includes a vehicle speed detecting pump (112, 212) which is provided at lower travelling equipment and connected to an output shaft of a transmission (111, 211); an oil pressure swivel joint (115, 215) which is provided at a connecting part of the lower travelling equipment and an upper revolving superstructure; and a vehicle speed detecting motor (116, 216) driven by the vehicle speed detecting pump, a vehicle speed sensor (118) for detecting a rotational speed signal of the vehicle speed detecting motor to produce a vehicle speed detecting signal, and a controller (120) for calculating vehicle speed according to the vehicle speed detection signal to perform a traveling control such as speed gear selection of the transmission, which are provided at the upper revolving superstructure.
Description
Technical field
The present invention relates to a kind of vehicle speed detector device.
Background technology
In the past,, structure is as shown in figure 3 for example arranged as vehicle speed detector device.This vehicle speed detector device has the speed of a motor vehicle that is driven by variator 11 and detects with pump 12, and the oil pressure that detects the pressure oil of discharging with pump 12 with 13 pairs of speed of a motor vehicle of oil pressure sensor detects.And, oil pressure sensor 13 detected fuel injection pressure signals are delivered to controller 14, controller 14 calculates the speed of a motor vehicle (for example TOHKEMY 2001-235032 communique) according to this fuel injection pressure signal.In addition, the symbol 10 of Fig. 3 is to suck supply valve.
In addition, in other vehicle speed detector devices, as shown in Figure 4, has the electromagnetic type pickoff sensor 15 that the rotational speed that detects the output shaft (not shown) be arranged on the variator 11A on the bottom driving body (not shown) is used.In order to send into controller 14A through collector ring 16 as sending into upper rotating body (not shown) by the detection signal of electromagnetic type pickoff sensor 15 detected electric signal, controller 14A calculates the speed of a motor vehicle according to this electric signal then.
Yet in vehicle speed detector device shown in Figure 3, owing to will detect the speed of a motor vehicle by fuel injection pressure signal, when making oily temperature not simultaneously according to the height of temperature and the amount of work of oil pressure machinery, oil viscosity can be very different.Therefore when the oil temperature was hanged down, because oil viscosity uprises, it is big that the resistance of ducting that pressure oil passes through becomes, so the pressure loss becomes greatly, the speed of a motor vehicle that then measures is than actual speed of a motor vehicle height.In addition, when the oil temperature was high, because the oil viscosity step-down, the resistance of ducting that pressure oil passes through diminished, so the pressure loss diminishes, the speed of a motor vehicle that then measures is lower than the actual speed of a motor vehicle.In a word, the speed of a motor vehicle detects the oil pressure of the pressure oil of discharging with pump 12, owing to be not the oil pressure of the real corresponding speed of a motor vehicle, is difficult so will obtain the correct speed of a motor vehicle.
In addition, use the vehicle speed detector device of the detection signal that detects by electromagnetic type pickoff sensor 15, the place has variator at its underpart driving body, and will send the detection signal that detects the electric signal of usefulness as the speed of a motor vehicle to upper rotating body.For this reason, this process must be undertaken by collector ring 16, but when the collector ring 16 by electric signal wears out, owing to can produce noise, so can not send the electric signal that the correct detection speed of a motor vehicle is used.Thereby, in such vehicle speed detector device, thisly have variator in bottom driving body place, and need send in the vehicle of detection signal of the electric signal that detects usefulness as the speed of a motor vehicle to upper rotating body, it is difficult obtaining the correct speed of a motor vehicle for a long time.
Summary of the invention
The present invention is conceived to the problems referred to above and the invention of developing, and its purpose is to provide a kind of vehicle speed detector device that can access the correct speed of a motor vehicle.And then its purpose is to provide a kind of and is that driving body place, bottom has variator and need sends in the vehicle of detection signal of the electric signal that detects usefulness as the speed of a motor vehicle to upper rotating body, can obtain the vehicle speed detector device of the correct speed of a motor vehicle for a long time.
To achieve the above object, the 1st invention of relevant vehicle speed detector device of the present invention, have: the speed of a motor vehicle that connects the output shaft of variator detects uses pump, with the vehicle speed detector device that detects the speed of a motor vehicle detection motivation that drives with pump and the rotational speed signal detection speed of a motor vehicle by described speed of a motor vehicle detection motivation by the speed of a motor vehicle.
According to such structure, detect the oil mass of discharging by the speed of a motor vehicle with pump, speed of a motor vehicle detection motivation is rotated to detect the rotating speed that the rotating speed with pump is directly proportional with the speed of a motor vehicle.Therefore, the speed of a motor vehicle detects the influence that rotating speed with the rotating speed of pump and speed of a motor vehicle detection motivation is not subjected to the variation of the oil viscosity that produces because of the warm height of oil, so can detect the correct speed of a motor vehicle.
The 2nd invention of relevant vehicle speed detector device of the present invention, have: be arranged on the driving body of bottom and the speed of a motor vehicle that connects the output shaft of variator detects and to use pump, use swivel coupling with the oil pressure of the connecting portion that is arranged on bottom driving body and upper rotating body and to being arranged on the upper rotating body, detect the speed of a motor vehicle detection motivation that drives with pump by the described speed of a motor vehicle, detect the rotational speed signal of speed of a motor vehicle detection motivation and produce the vehicle speed sensor of speed of a motor vehicle detection signal, with calculate the speed of a motor vehicle by speed of a motor vehicle detection signal and to the controller of the controls of travelling such as the speed threshold selection of variator.
According to such structure, detect the oil mass of discharging by the speed of a motor vehicle with pump, speed of a motor vehicle detection motivation is rotated to detect the rotating speed that the rotating speed with pump is directly proportional with the speed of a motor vehicle.Thus, the speed of a motor vehicle detects the influence that rotating speed with the rotating speed of pump and speed of a motor vehicle detection motivation is not subjected to the oil viscosity variation that the height because of the oil temperature produces, so can detect the correct speed of a motor vehicle.And then, owing to there is no need to send the vehicle speed signal that detects the electric signal of usefulness as the speed of a motor vehicle, send the collector ring of using as the vehicle speed signal of electric signal so can remove, thereby can obtain the correct speed of a motor vehicle for a long time to upper rotating body.
Description of drawings
Fig. 1 is system's pie graph of the vehicle speed detector device of expression the 1st embodiment of the present invention.
Fig. 2 is system's pie graph of the vehicle speed detector device of expression the 2nd embodiment of the present invention.
Fig. 3 is system's pie graph of representing the vehicle speed detector device of oil pressure detection formula in the past.
Fig. 4 is system's pie graph of representing the vehicle speed detector device of electric in the past.
Embodiment
Below vehicle speed detector device of the present invention is described with reference to accompanying drawing.Fig. 1 is system's pie graph of the vehicle speed detector device of expression the 1st embodiment.Fig. 2 is system's pie graph of the vehicle speed detector device of expression the 2nd embodiment.
As shown in Figure 1, variator 111 is provided with the speed of a motor vehicle and detects with pump 112, drives the speed of a motor vehicle by variator 111 and detects with pump 112.It is dual rotary pumps that the speed of a motor vehicle detects with pump 112, but right rotation still is all discharge pressure oil of anticlockwise.The escape hole 112R that the speed of a motor vehicle detects with pump 112 connects the A mouth that sucks supply valve 114, and escape hole 112L connects the B mouth that sucks supply valve 114.
Suck supply valve 114, portion has suction with check valve 114a, 114b within it, sucks and uses check valve 114a and suck the loop of using between the check valve 114b, is connecting the T mouth that sucks supply valve 114.Suck supply valve 114, portion also has discharge with check valve 114c, 114d within it, discharges and uses check valve 114c and discharge the loop of using between the check valve 114d, is connecting the C mouth that sucks supply valve 114.
In addition, working truck (not shown) has bottom driving body (not shown) and upper rotating body (not shown).On upper rotating body, have working rig (not shown), be provided with oil pressure with swivel coupling 115 at the connecting portion of bottom driving body and upper rotating body.Variator 111 is set on the driving body of bottom, and controller 120 is set on the upper rotating body.Suck the T mouth of supply valve 114, be connected with fuel tank 113 with swivel coupling 115 by oil pressure.In addition, suck the C mouth of supply valve 114, connect the oil-in 116S of speed of a motor vehicle detection motivation 116 by oil pressure with swivel coupling 115.The oil export 116T of speed of a motor vehicle detection motivation 116, the oil pressure of the connecting portion by being arranged on bottom driving body and upper rotating body is connected with fuel tank 113 with swivel coupling 115.The oil export 116T of speed of a motor vehicle detection motivation 116 and oil pressure with the loop between the swivel coupling 115 in, be provided with the throttling valve 131 that the speed of a motor vehicle detects usefulness, the back pressure that the discharge loop of speed of a motor vehicle detection motivation 116 is stipulated.
On the output shaft of rotation speed of a motor vehicle detection motivation 116, be provided with the speed of a motor vehicle detection of gear 117 of vehicle speed signal generation usefulness, by speed of a motor vehicle detection motivation 116 driven rotary.In the periphery of speed of a motor vehicle detection of gear 117, for example be formed with tooth, the otch and concavo-convex of specified quantity.Be provided with speed of a motor vehicle detecting sensor 118 near the periphery of speed of a motor vehicle detection of gear 117, make speed of a motor vehicle detection of gear 117 periphery, for example to make the pulse shaping that produces when signal detecting part by speed of a motor vehicle detecting sensor 118 of the tooth of specified quantity be electric signal.
In addition, speed of a motor vehicle detection motivation 116 can be that its volume ratio speed of a motor vehicle detects the little motor of capacity with pump 112.For example, the capacity that makes speed of a motor vehicle detection motivation 116 is that the speed of a motor vehicle detects with 1/5th of the capacity of pump 112, the rotating speed that makes speed of a motor vehicle detection motivation 116 is that the speed of a motor vehicle detects 5 times high rotating speed with the rotating speed of pump 112, the pulse that speed of a motor vehicle detection of gear 117 is produced is as high-frequency impulse in addition, and then speed of a motor vehicle detecting sensor 118 can stably detect vehicle speed signal.
Speed of a motor vehicle detecting sensor 118 connects controller 120, and sends vehicle speed signal to controller 120 with the form of electric signal.Vehicle speed detector device comes to this to having the structure of speed of a motor vehicle detection of gear 117, speed of a motor vehicle detecting sensor 118 and controller 120.Controller 120 calculation process vehicle speed signal also calculate the speed of a motor vehicle, carry out the control of travelling of the speed threshold selection etc. of variator 111 then.
Below, the action of the vehicle speed detector device of the 1st embodiment is described.Travel and during variator 111 action when operation vehicle (not shown) advances, drive the speed of a motor vehicle with the rotating speed of the corresponding speed of a motor vehicle and detect and carry out right rotation with pump 112.The speed of a motor vehicle detects with pump 112, uses swivel coupling 115 and sucks from fuel tank 113, by oil pressure and use check valve 114b, sucks oil from the B mouth that sucks supply valve 114, from the escape hole 112R discharge pressure oil of speed of a motor vehicle detection with pump 112.
Detect the pressure oil of discharging with pump 112 from the speed of a motor vehicle, enter the A mouth that sucks supply valve 114, and by discharge check valve 114c, enter the oil-in 116S of speed of a motor vehicle detection motivation 116 by oil pressure with swivel coupling 115 from the C mouth that sucks supply valve 114, make 116 rotations of speed of a motor vehicle detection motivation.Like this, make 117 rotations of speed of a motor vehicle detection of gear by speed of a motor vehicle detection motivation 116, the pulse shaping that speed of a motor vehicle detecting sensor 118 will be produced by speed of a motor vehicle detection of gear 117 is the vehicle speed signal as electric signal, and delivers in the controller 120.The vehicle speed signal that controller 120, calculation process receive from speed of a motor vehicle detecting sensor 118 also calculates the speed of a motor vehicle, carries out the control of travelling of the speed threshold selection etc. of variator 111 then.
Travel when the operation vehicle retreats, during variator 111 action too, drive the speed of a motor vehicle with the rotating speed of the corresponding speed of a motor vehicle and detect and carry out anticlockwise with pump 112.The speed of a motor vehicle detects with pump 112, uses swivel coupling 115 and sucks from fuel tank 113, by oil pressure and use check valve 114a, sucks oil from the A mouth that sucks supply valve 114.And, detect the escape hole 112L discharge pressure oil of using pump 112 from the speed of a motor vehicle, and, make 116 rotations of speed of a motor vehicle detection motivation with above-mentioned same, the pulse shaping that speed of a motor vehicle detecting sensor 118 will be produced by speed of a motor vehicle detection of gear 117 is the vehicle speed signal as electric signal, and delivers in the controller 120.The vehicle speed signal that controller 120, calculation process receive from speed of a motor vehicle detecting sensor 118 also calculates the speed of a motor vehicle, carries out the control of travelling of the speed threshold selection etc. of variator 111 then.
Thereby, owing to be and the loop of detecting rapidly that the oil mass of discharging with pump 112 is directly proportional and rotating as speed of a motor vehicle detection motivation 116, so speed detects rotating speed with the rotating speed of pump 112 and speed of a motor vehicle detection motivation 116 and is not subjected to influence by the variation of the oil viscosity of the height generation of oil temperature, and can detect the correct speed of a motor vehicle.In addition,, send the collector ring of using as the vehicle speed signal of electric signal, can obtain the correct speed of a motor vehicle for a long time so can remove owing to do not send the necessity of vehicle speed signal that detects the electric signal of usefulness as the speed of a motor vehicle to upper rotating body.In addition, when using the vehicle speed detector device of present embodiment, also can save oil pressure swivel coupling 115 for the vehicle that does not have upper rotating body.
Below, the vehicle speed detector device of the 2nd embodiment of the present invention is described.Simultaneously, give identical symbol and omit its explanation for the parts identical with embodiment shown in Figure 1.
As shown in Figure 2, variator 211 is provided with the speed of a motor vehicle and detects with pump 212, drives the speed of a motor vehicle by variator 211 and detects with pump 212.It is dual rotary pumps that the speed of a motor vehicle detects with pump 212, but is all discharge pressure oil of right rotation or anticlockwise.The speed of a motor vehicle detects the escape hole 212R with pump 212, connects the oil-in 216R of speed of a motor vehicle detection motivation 216 with swivel coupling 215 by oil pressure.The speed of a motor vehicle detects the escape hole 212L with pump 212, connects the oil-in 216L of speed of a motor vehicle detection motivation 216 with swivel coupling 215 by oil pressure.Speed of a motor vehicle detection motivation 216 is dual rotary motor, no matter is that right rotation or anticlockwise can.Charge pump 214 connects fuel tank 213 and sucks oil.In the way in the discharge loop of charge pump 214, be provided with relief valve 220, the discharge oil that surpasses the authorised pressure of charge pump 214 can be discharged in the fuel tank 213.
The discharge loop of charge pump 214 is connected to suck uses check valve 218a and suction with in the loop between the check valve 218b.Suck with check valve 218a be connected to connect the speed of a motor vehicle detect with the loop of the oil-in 216R of the escape hole 212R of pump 212 and speed of a motor vehicle detection motivation 216, detect near the speed of a motor vehicle and to use pump 212 1 sides.Suck and use check valve 218b, be connected to connect the speed of a motor vehicle detect with the loop of the oil-in 216L of the escape hole 212L of pump 212 and speed of a motor vehicle detection motivation 216, detect near the speed of a motor vehicle and to use pump 212 1 sides.
To make the speed of a motor vehicle detect the insufficient section that remains on the oil of authorised pressure with the oil pressure in the loop between pump 212 and the speed of a motor vehicle detection motivation 216 in order replenishing, to detect with pump 212 to the speed of a motor vehicle with swivel coupling 215 by oil pressure and supply with the oil of discharging by charge pump 214.
Discharge and use check valve 219a, be connected to and connect the speed of a motor vehicle and detect the loop, close speed of a motor vehicle detection motivation 216 1 sides with the oil-in 216R of the escape hole 212R of pump 212 and speed of a motor vehicle detection motivation 216.Discharge with check valve 219b and be connected near connecting speed of a motor vehicle detection motivation 216 1 sides in loop that the speed of a motor vehicle detects the oil-in 216L of the escape hole 212L that uses pump 212 and speed of a motor vehicle detection motivation 216.
Discharge and use check valve 219a and discharge the loop of using between the check valve 219b, be connected with discharge relief valve 217.Discharge relief valve 217 and connect fuel tanks 213, and when speed of a motor vehicle detection be authorised pressure when above with the pressure oil in the loop between pump 212 and the speed of a motor vehicle detection motivation 216, pressure oil is discharged in the fuel tank 213.
Working truck (not shown) has bottom driving body (not shown) and upper rotating body (not shown), and has Work machine (not shown) on upper rotating body.Be provided with oil pressure swivel coupling 215 at the connecting portion place of bottom driving body and upper rotating body.Variator 211 is set on the driving body of bottom, and controller 120 is set on the upper rotating body.The output shaft of speed of a motor vehicle detection motivation 216 is provided with and produces the speed of a motor vehicle detection of gear 117 that vehicle speed signal is used, by speed of a motor vehicle detection motivation 216 driven rotary.Speed of a motor vehicle detecting sensor 118 is set at the periphery near speed of a motor vehicle detection of gear 117, and produces the electric signal as vehicle speed signal.In addition, speed of a motor vehicle detecting sensor 118 connects controller 120, and controller 120 calculation process vehicle speed signal also calculate the speed of a motor vehicle.
In addition, the capacity of speed of a motor vehicle detection motivation 216 detects with the speed of a motor vehicle uses the capacity of pump 212 identical, and the rotating speed that the speed of a motor vehicle detects with the rotating speed of pump 212 and speed of a motor vehicle detection motor 216 is identical rotating speed.Thereby the speed of a motor vehicle detects the influence that rotating speed with the rotating speed of pump 212 and speed of a motor vehicle detection motivation 216 is not subjected to the variation of the oil viscosity that produces because of the warm height of oil.
Below, the action of the vehicle speed detector device of the 2nd embodiment is described.When the operation vehicle travels and during variator 211 action advancing, drive the speed of a motor vehicle with the rotating speed of the corresponding speed of a motor vehicle and detect and carry out right rotation with pump 212.From the pressure oil of speed of a motor vehicle detection with the escape hole 212R discharge of pump 212, enter the oil-in 216R of speed of a motor vehicle detection motivation 216 by oil pressure with swivel coupling 215, make 216 rotations of speed of a motor vehicle detection motivation.The speed of a motor vehicle that enters the pressure oil that comes out from the oil-in 216L of speed of a motor vehicle detection motivation 216 detects the escape hole 212L with pump 212.Make the pressure oil circulation like this, and make speed of a motor vehicle detection motivation 216 carry out right rotation.
Like this, make 217 rotations of speed of a motor vehicle detection of gear by speed of a motor vehicle detection motivation 216, the pulse shaping that speed of a motor vehicle detecting sensor 118 will be produced by speed of a motor vehicle detection of gear 117 is the vehicle speed signal as electric signal, and delivers in the controller 120.The vehicle speed signal that controller 120 calculation process receive from speed of a motor vehicle detecting sensor 118 also calculates the speed of a motor vehicle, carries out the control of travelling of the speed threshold selection etc. of variator 211 then.
Working truck retreat travel and during variator 211 action too, drive the speed of a motor vehicle with the rotating speed of the corresponding speed of a motor vehicle and detect and carry out anticlockwise with pump 212.The speed of a motor vehicle detects with pump 212 and similarly plays a role with above-mentioned, makes 216 anticlockwises of speed of a motor vehicle detection motivation.The pulse shaping that speed of a motor vehicle detecting sensor 118 will be produced by speed of a motor vehicle detection of gear 117 is the vehicle speed signal as electric signal, and delivers in the controller 120.The vehicle speed signal that controller 120 calculation process receive from speed of a motor vehicle detecting sensor 118 also calculates the speed of a motor vehicle, carries out the control of travelling of the speed threshold selection etc. of variator 211 then.
Thereby, become according to the speed of a motor vehicle and detect the oil mass of discharging, make speed of a motor vehicle detection motivation 216 to detect the loop that rotates with the identical rotating speed of pump 212 with the speed of a motor vehicle with pump 212.Thus, because detecting rotating speed with the rotating speed of pump 212 and speed of a motor vehicle detection motivation 216, the speed of a motor vehicle is not subjected to influence, so can detect the correct speed of a motor vehicle because of the variation of the oil viscosity of the height generation of oil temperature.In addition,, send the collector ring of using as the vehicle speed signal of electric signal, can obtain the correct speed of a motor vehicle for a long time so can remove owing to do not send the necessity of vehicle speed signal that detects the electric signal of usefulness as the speed of a motor vehicle to upper rotating body.In addition, when using the vehicle speed detector device of present embodiment, also can save oil pressure swivel coupling 215 for the vehicle that does not have upper rotating body.
Claims (2)
1. vehicle speed detector device is characterized in that having:
The speed of a motor vehicle that connects the output shaft of variator (111,211) detect with pump (112,212) and
By the described speed of a motor vehicle detect the speed of a motor vehicle detection motivation (116,216) that drives with pump (112,212) and
Detect the vehicle speed detector device of the speed of a motor vehicle by the rotational speed signal of described speed of a motor vehicle detection motivation (116,216).
2. vehicle speed detector device is characterized in that having:
The speed of a motor vehicle that is arranged on the driving body of bottom and connects the output shaft of variator (111,211) detect with pump (112,212) and
Be arranged on described bottom driving body and upper rotating body connecting portion oil pressure with swivel coupling (115,215) and
To be arranged on the described upper rotating body, detect the speed of a motor vehicle detection motivation (116,216) that drives with pump (112,212), detect the rotational speed signal of described speed of a motor vehicle detection motivation (116,216) and produce the vehicle speed sensor (118) of speed of a motor vehicle detection signal and the controller (120) that calculates the speed of a motor vehicle and the speed threshold selection of described variator (111,211) etc. is travelled and controlled by described speed of a motor vehicle detection signal by the described speed of a motor vehicle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0227397.7 | 2002-11-23 | ||
| GB0227397A GB2395562A (en) | 2002-11-23 | 2002-11-23 | Vehicle speed detecting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1510422A true CN1510422A (en) | 2004-07-07 |
Family
ID=9948419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2003101180179A Pending CN1510422A (en) | 2002-11-23 | 2003-11-20 | Vehicle speed detector |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2004176916A (en) |
| CN (1) | CN1510422A (en) |
| DE (1) | DE10354197A1 (en) |
| GB (1) | GB2395562A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114184808B (en) * | 2021-12-06 | 2023-11-03 | 中航贵州飞机有限责任公司 | Test inspection device before aircraft wheel speed sensor is adorned |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2565441B2 (en) * | 1991-11-06 | 1996-12-18 | 本田技研工業株式会社 | Control method of automatic clutch for vehicle |
| JP3017638B2 (en) * | 1994-07-06 | 2000-03-13 | 株式会社クボタ | Work vehicle speed detection device |
| JP2001235032A (en) * | 2000-02-24 | 2001-08-31 | Komatsu Ltd | Hydraulic travel drive |
-
2002
- 2002-11-23 GB GB0227397A patent/GB2395562A/en not_active Withdrawn
-
2003
- 2003-11-10 JP JP2003380105A patent/JP2004176916A/en not_active Withdrawn
- 2003-11-20 CN CNA2003101180179A patent/CN1510422A/en active Pending
- 2003-11-20 DE DE10354197A patent/DE10354197A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE10354197A1 (en) | 2004-06-09 |
| JP2004176916A (en) | 2004-06-24 |
| GB2395562A (en) | 2004-05-26 |
| GB0227397D0 (en) | 2002-12-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: Tokyo, Japan, Japan Applicant after: Komatsu Mfg Co., Ltd. Address before: Durham, England Applicant before: Komatsu Uk Ltd. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: BRITISH KOMATSU CO. LTD. TO: KOMATSU MFG CO., LTD. |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |