CN100416246C - Pressure type mechanical torque, rotation, angle and displacement driving sensor - Google Patents

Pressure type mechanical torque, rotation, angle and displacement driving sensor Download PDF

Info

Publication number
CN100416246C
CN100416246C CNB2003101109713A CN200310110971A CN100416246C CN 100416246 C CN100416246 C CN 100416246C CN B2003101109713 A CNB2003101109713 A CN B2003101109713A CN 200310110971 A CN200310110971 A CN 200310110971A CN 100416246 C CN100416246 C CN 100416246C
Authority
CN
China
Prior art keywords
displacement
assembly
component
wheel shaft
driving
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.)
Expired - Fee Related
Application number
CNB2003101109713A
Other languages
Chinese (zh)
Other versions
CN1616937A (en
Inventor
薛荣生
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Southwest University
Original Assignee
Southwest University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Southwest University filed Critical Southwest University
Priority to CNB2003101109713A priority Critical patent/CN100416246C/en
Publication of CN1616937A publication Critical patent/CN1616937A/en
Application granted granted Critical
Publication of CN100416246C publication Critical patent/CN100416246C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

The present invention relates to a pressure type mechanical torque rotating speed angle displacement driving sensor which comprises a drive component, a wheel shaft, a driven component, a torque regulator assembly, a displacement driving assembly and a clutch assembly, wherein the torque regulator assembly and the drive component are assembled into a whole by an arc slot and screw bolts on the drive component on the wheel shaft; the displacement driving assembly is assembled on the wheel shaft by a roller mechanism; the displacement driving assembly is provided with a pressure spring, a press plate, a screw rod barrel and a displacement component, and the screw rod barrel and the displacement component are sheathed; the pressure spring is arranged between the press plate and an overrunning clutch assembly; the overrunning clutch assembly and the driven component form clutch matching relation; the driven component is assembled on the displacement driving assembly by a bearing; a displacement sensing element is arranged on the displacement component corresponding to a displacement sensing element fixed nearby the displacement component for inducting displacement signals. The present invention is arranged at a driving system terminal, and directly participates in driving control in a mechanical mode; the present invention has a mechanical adaptive characteristic; the present invention synchronously collects torque and rotating speed signals in the driving process; the present invention provides reliable basis for accurately controlling the output power of a motor (engine), and enables the driving system to obtain efficient energy saving.

Description

Pressure type mechanical torque, rotation, angle and displacement driving sensor
Technical field
The present invention relates to the mechanical drive field of sensing technologies, be specifically related to various mechanical drive medium speeds, the isoparametric sensing of load are related in particular to the Pressure type mechanical torque, rotation, angle and displacement driving sensor of motorcycle, electric bicycle.
Background technology
In mechanical drive, to realize intelligent transmission control, load is important test item, no matter present is on common gearing, still on vehicle, detection to this index generally is to adopt multiple sensor to obtain correlation parameter respectively, comprehensively judge again, as having the load detection scheme of automobile, motorcycle now:
A) adopt throttle position sensor and speed probe to judge load, promptly so-called a-n system.Wherein, a dactylus valve position, n refers to rotating speed.ECU thinks that the same then load in the position of throttle opening is the same, and the position of throttle opening is different then loads differently, measures the difference of judging load with this.
B) adopt gas manifold pressure sensor and speed probe to judge load, promptly so-called p-n system.Wherein, p finger pressure power, n refers to rotating speed.Because load variations, admission pressure also can change thereupon, differentiate the variation of load, detection load with intake manifold pressure sensor.
These two kinds of schemes, the oil spout that load difference causes changes by the lambda sensor correction.
These two kinds load detection systems all are all not participate in transmission directly at the sensor, do not have under the bearing load indirect mode at vehicle front and to detect, and be that detection is judged resulting on engine, conforming requirement is strict to engine in this measurement, and often engine production producer can't guarantee, each engine will carry out strict demarcation separately; Air inlet pressure sensor cost height, and the admission pressure fluctuation is bigger, fluctuation generally also can appear in admission pressure, and inlet valve disassociation valve body distance is very short, and the admission pressure fluctuation is bigger, makes ECU judge that real load is inaccurate.Because the operating mode of vehicle operating is extremely complicated, the people can not make accurately and judging, usually make artificial maloperation, the inaccurate demand of engine that misled of people's maloperation and operation to load, and engine can be carried out according to people's operational order fully, also be based upon on the inaccurate basis even proofread and correct, therefore cause oil consumption loss and loss in efficiency.Engine is to produce the power source that drives, the power that all gear trains after the engine transmission transmission are brought and variation, travel conditions and the various complex working condition of loss in efficiency and load are all monitored and are controlled, therefore the detection to system of vehicle transmission and change in torque situation is local, and judgement that microcomputer is done and the instruction of sending are all not exclusively rationally with accurate.And testing agency's complexity, cost height, sexual valence ratio.
Summary of the invention
The purpose of this invention is to provide a kind of various mechanical transmission courses that are applicable to, be particularly useful for motorcycle, the Pressure type mechanical torque, rotation, angle and displacement driving sensor of electric bicycle, it is installed in the drive system terminal, mechanically participate in transmission control directly, synchronous acquisition moment of torsion in transmission process, tach signal, measure vehicle launch fast, idling, and the variation of various loads and various parameters such as alternation moment and transitionality thereof, reach the output power of controlling motor (engine) timely and accurately, energy-efficient, have mechanical self-adaptation characteristics.
Technical scheme of the present invention is as follows:
Pressure type mechanical torque, rotation, angle and displacement driving sensor comprises driving link, wheel shaft, driven subassembly, torque regulator assembly, displacement drive assembly and clutch assembly.The torque regulator assembly is assembled into one by the deep-slotted chip breaker on the driving link, bolt and driving link, and moment of torsion transfers the another body of dress device assembly to be assemblied on the wheel shaft.The displacement drive assembly is assemblied on the wheel shaft by roller machinery.The displacement drive assembly have stage clip, pressing plate, inside and outside the screw mandrel tube and the displacement component that are nested, screw mandrel tube and driving link are fixed, pressing plate is inserted in the axially open limit sliding chutes of screw mandrel tube, and cylindrical is connected with displacement component, between pressing plate and the overdrive clutch assembly stage clip is housed.Overdrive clutch assembly and driven subassembly form the clutch matching relationship, and driven subassembly is assemblied on the displacement drive assembly by bearing.Displacement sensor is arranged on the displacement component, corresponding with fixing displacement receiving element in its vicinity, the inductive displacement signal, the sensing element circuit connects the sensor line plate.
Described overdrive clutch assembly has the cover for seat that is connected on the wheel shaft, and cover for seat directly or indirectly has and surmounts ratchet, and surmounts the ratchet that surmounts that ratchet clutch matches and then is fixed on the driven subassembly.
Described compression spring sleeve is on wheel shaft, and an end is pressed on the pressing plate by bearing, and the other end is pressed on the cover for seat of overdrive clutch assembly by roller.
Described displacement component comprises and is enclosed within screw mandrel tube outer displacement nut, the push pedal or the push rod that link to each other with the displacement nut and is fixedly connected on push pedal or the displacement dish of push rod end, displacement sensor is contained on the displacement dish, and push pedal or push rod and overrunning clutch wear flexible connection.
The revolution speed sensing element is installed on the described driven subassembly, corresponding with fixing rotating speed receiving element in its vicinity, the induction tach signal.
Described wheel shaft two ends are rotatably assorted by bearing and the support member of fixing.Displacement receiving element and the rotating speed receiving element corresponding respectively with displacement sensor on the displacement dish and the revolution speed sensing element on the driven subassembly are fixed on the sensor installing component, and the sensor installing component then is fixed on the support member.
In addition, outside the torque regulator assembly or outside the clutch assembly, also can adorn second driving link.Like this when having two kinds of power sources, a kind of power source deficiency, another kind of power source adaptive equalization.
But driving link driving wheel of the present invention, driving disc spacing pressing or other analog structure.Deep-slotted chip breaker is used to limit torsion spring twisting angular range on the driving link, and its radian is being to determine according to initial load and peak load.
Advantage of the present invention is: this device is installed in the drive system end, when participating in transmission directly, synchronous detection torsion and rate signal are made judgement accurately for follow-up Computer Processing and control gear, control the power output of motor or engine in good time.In transmission process, can detect with hundreds of continuous linear automatic stepless of the highest per second, startup, idling, various load condition and parameters variations such as load alternation moment and transitionality are measured in response fast, the signal that obtains is more accurate, timely, travel condition of vehicle is controlled in good time, reach energy-efficient purpose,, avoided the drawback that operation control is inaccurate and zero start brings for intelligent drives provides the most reliable basis.And be load according to specific demand, the size of moment of torsion and other concrete use need, and set required desirable operational mode and lay the first stone.This device is participated in transmission directly, also has mechanical self-adaptation characteristics.
Description of drawings
Fig. 1 is a structural drawing of the present invention;
Fig. 2 is the structural drawing of driving wheel among the figure.
Embodiment
Describe the present invention in detail below in conjunction with specific embodiment, protection of the present invention is not limited to following examples.
Referring to Fig. 1, this structure is the Pressure type mechanical torque, rotation, angle and displacement driving sensor that is installed on electric bicycle or the motorcycle rear axle, have driving wheel 1, wheel shaft 12 and driven subassembly, driving wheel 1 is again an engaged wheel in the big kinematic train of electric bicycle or motorcycle, wheel shaft 12 is hind axles of electric bicycle or motorcycle, and driven subassembly is the gaily decorated basket assembly of electric bicycle or motorcycle in this example.This device also has displacement drive assembly, overdrive clutch assembly, torque regulator assembly, displacement sensor, sense line plate, sensor installing component and second driving wheel in addition.
Referring to Fig. 1, Fig. 2, evenly have deep-slotted chip breaker 30 on the driving wheel 1, in several displacement trundles 24 are arranged.The torque regulator assembly comprises moment of torsion adjustment plate 28, bearing seat 27 and moment of torsion are adjusted set collar 25, moment of torsion is adjusted plate 28 and is connected by bolt 29 and driving wheel deep-slotted chip breaker 30 interior displacement trundles 24, fuse with driving wheel 1, driving wheel 1 can relatively rotate with the torque regulator assembly, rotational angle (is pressed earlier the moment of torsion of the load request adjustment butterfly spring of vehicle during assembling in the radian scope that deep-slotted chip breaker 30 limits, set bolt again), moment of torsion is adjusted plate 28 and the bearing seat 27 end faces engagement that is installed on the wheel shaft 12, adjusts set collar 25 screw-threaded coupling moments of torsion by moment of torsion again and adjusts plate 28 and bearing seat 27.The displacement drive assembly comprises screw mandrel tube 22, displacement component, pressing plate 4 and butterfly spring 7, and displacement component comprises displacement nut 3, push pedal 18 and displacement dish 17.Screw mandrel tube 22 is fixedlyed connected with the center pit of driving wheel 1, axially has the displacement chute on the screw mandrel tube 22, and supply plate 4 interts and be spacing to it, and its pressing plate 4 can only be moved axially, and can be with screw mandrel tube 22 unitary rotation.The cylindrical of the pressing plate 4 displacement nut 3 outer with being enclosed within screw mandrel tube 22 is connected, and displacement nut 3 connects push pedal 18 again, and the breach of overrunning clutch is passed in push pedal 18, its end connection displacement dish 17.7 of butterfly springs in the screw mandrel tube 22 are enclosed within on the wheel shaft 12, and an end presses pressing plate 4 one sides by bearing 5, and the other end is pressed on cover for seat 11 inboards of overdrive clutch assembly by roller 10, transmits torsion between displacement sensing assembly and overdrive clutch assembly.Roller 10 is the support between wheel shaft 12 and the screw mandrel tube 22 simultaneously.Overrunning clutch comprises cover for seat 11, surmount ratchet 20 and surmount ratchet 21, cover for seat 11 is connected with wheel shaft 12 one, rotate with wheel shaft 12, and be enclosed within on the screw mandrel tube 22 from the end, needle roller 16 is housed between them, it (can be one-body molded that there is the ratchet of surmounting 20 outer ring of cover for seat 11, also can be to form) by the separating component assembling, surmount on the bearing seat that 21 of ratchets are fixed on driven subassembly, formation overdrive clutch relation, driven subassembly comprises the gaily decorated basket 23, be located at the bearing 2 and 6 in the gaily decorated basket 23 two ends, be used between gaily decorated basket assembly and displacement sensing assembly, forming and support, wherein a bearing seat that is connected with the gaily decorated basket 23 has and surmounts ratchet 21, and the ratchet 20 that surmounts of it and overrunning clutch forms the overdrive clutch relation, gives overdrive clutch assembly with the load transfer of the gaily decorated basket.
The securing supports 13 that supports wheel shaft 12 is fixed connection shafts of vehicle frame and trailing wheel, be fixedly connected with hood-like sensor installing component 9 on it, on the annulus of the gaily decorated basket 23, be provided with revolution speed sensing element 19B, be provided with corresponding with it rotating speed receiving element 19A in the sensor installing component outside, on the circumference of displacement dish 17, be provided with displacement sensor 8B, be provided with the displacement receiving element 8A corresponding in sensor installing component inboard with displacement sensor.Sensing element is connected with sensor line plate 15 on being located at the sensor installing component, and sensor line plate 15 is passed to outside processing section with signal.Existing various ripe sensing elements such as sensing element can adopt that differential type, pressure swing type are linear, self-induction type, electric vortex type, electric network formula, thing position are sensor-type, resistance-type, infrared type, optical fiber type, ultrasound wave.
If this device is when being used for electric bicycle, can adopt electronic and the double-stranded drives structure of manpower, the engaged wheel of its man power driving mechanism is that second driving wheel 14 of this device can be installed in clutch base and puts, and can reach manpower and drive when being main the effect of electric power adaptive equalization.
In addition, as required, pusher plate also can change the displacement push rod into, and its function is identical.
The course of work: vehicle launch and when in setting the initial load scope, moving, driving wheel obtains powered rotation from external motor or engine, drive the butterfly spring, give clutch assembly with transmission of power, driving driven subassembly at last is gaily decorated basket assembly, drive wheels since this moment zero load or the load less than assumed load, displacement this moment drive assembly is also in synchronous rotation, and the displacement dish is not subjected to displacement.
When vehicle load when setting initial load, the load of gaily decorated basket assembly passes to overdrive clutch assembly, overdrive clutch assembly passes to the butterfly spring with crossing wheel shaft with load, this moment, driving force and load intersected, under the acting in conjunction of two power, the butterfly spring is compressed, and torque regulator assembly and driving wheel relatively rotate (angle is in the peak load scope of setting), and the displacement dish produces displacement.In different load conditions, produce different displacements, constantly give follow-up micro treatmenting device by displacement sensor and revolution speed sensing element with digital signal transfers, utilize displacement, rotating speed digital signal by micro treatmenting device, calculate correlation parameters such as torsion, angle, and obtaining the required drive size, instruction motor or engine are recompensed in real time; After load reduces, the resilience of butterfly spring self-adaptation, power reduces automatically, such two power are alternation ceaselessly, the displacement dish is displacement back and forth constantly, instruction engine or motor are made judgement timely and accurately, thereby realize purpose energy-efficient, intelligent drives, have avoided the drawback that operation control is inaccurate and zero start brings.

Claims (7)

1. Pressure type mechanical torque, rotation, angle and displacement driving sensor comprises driving link, wheel shaft and driven subassembly, it is characterized in that: also have torque regulator assembly, displacement drive assembly and overdrive clutch assembly;
The torque regulator assembly is assembled into one by the deep-slotted chip breaker on the driving link, bolt and driving link, and the another body of torque regulator assembly is assemblied on the wheel shaft;
The displacement drive assembly is assemblied on the wheel shaft by idler wheel mechanism, the displacement drive assembly have stage clip, pressing plate, inside and outside the screw mandrel tube and the displacement component that are nested, screw mandrel tube and driving link are fixed, pressing plate is inserted in the axially open limit sliding chutes of screw mandrel tube, the cylindrical of pressing plate is connected with displacement component, between pressing plate and the overdrive clutch assembly stage clip is housed;
Overdrive clutch assembly and driven subassembly form the clutch matching relationship, and driven subassembly is assemblied on the displacement drive assembly by bearing;
Displacement sensor is arranged on the displacement component, corresponding with fixing displacement receiving element in its vicinity, the inductive displacement signal, the sensing element circuit connects the sensor line plate;
The revolution speed sensing element is installed on the driven subassembly, corresponding with fixing rotating speed receiving element in its vicinity, the induction tach signal.
2. sensing device according to claim 1 is characterized in that: overdrive clutch assembly has the cover for seat that is connected on the wheel shaft, and cover for seat directly or indirectly has and surmounts ratchet, and surmounts the ratchet that surmounts that ratchet clutch matches and then is fixed on the driven subassembly.
3. sensing device according to claim 1 and 2 is characterized in that: compression spring sleeve is on wheel shaft, and an end is pressed on the pressing plate by bearing, and the other end is pressed on the cover for seat of overdrive clutch assembly by roller.
4. sensing device according to claim 1 and 2, it is characterized in that: displacement component comprises and is enclosed within screw mandrel tube outer displacement nut, the push pedal or the push rod that link to each other with the displacement nut and is fixedly connected on push pedal or the displacement dish of push rod end, displacement sensor is contained on the displacement dish, push pedal or push rod pass overdrive clutch assembly, and connect the displacement dish.
5. sensing device according to claim 4, it is characterized in that: displacement receiving element and the rotating speed receiving element corresponding respectively with displacement sensor on the displacement dish and the revolution speed sensing element on the driven subassembly are fixed on the sensor installing component, the sensor installing component then is fixed on the support member, and described support member is the fixed connection shaft of vehicle frame and trailing wheel.
7. sensing device according to claim 1 and 2 is characterized in that: the wheel shaft two ends are rotatably assorted by bearing and the support member of fixing, and described support member is the fixed connection shaft of vehicle frame and trailing wheel.
8. sensing device according to claim 1 and 2 is characterized in that: second driving link is housed outside the torque regulator assembly or outside the overdrive clutch assembly.
CNB2003101109713A 2003-11-15 2003-11-15 Pressure type mechanical torque, rotation, angle and displacement driving sensor Expired - Fee Related CN100416246C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2003101109713A CN100416246C (en) 2003-11-15 2003-11-15 Pressure type mechanical torque, rotation, angle and displacement driving sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2003101109713A CN100416246C (en) 2003-11-15 2003-11-15 Pressure type mechanical torque, rotation, angle and displacement driving sensor

Publications (2)

Publication Number Publication Date
CN1616937A CN1616937A (en) 2005-05-18
CN100416246C true CN100416246C (en) 2008-09-03

Family

ID=34759279

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2003101109713A Expired - Fee Related CN100416246C (en) 2003-11-15 2003-11-15 Pressure type mechanical torque, rotation, angle and displacement driving sensor

Country Status (1)

Country Link
CN (1) CN100416246C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100360368C (en) * 2005-05-23 2008-01-09 西南师范大学 Motorcycle drive terminal torque transfer sensing mechanism
CN100383010C (en) * 2005-05-23 2008-04-23 西南师范大学 Motorcycle photoelectric Holl type adaptive drive sensing device
CN100416140C (en) * 2005-11-09 2008-09-03 西南大学 Self-adaptive torque and rotation rate transmission sensing device for speed changing gear
CN101382466B (en) * 2007-09-03 2011-04-06 西南大学 Adaptive transmission sensing drive assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506648A (en) * 1982-11-01 1985-03-26 Borg-Warner Corporation Controlled displacement supercharger
CN2401448Y (en) * 2000-01-12 2000-10-18 王善聪 Mechanical structure for monitoring chain wheel axle torsion of electric power boosted bicycle
CN2578807Y (en) * 2002-11-05 2003-10-08 长春华隆汽车科技发展有限公司 Steering torque sensor of vehicle
CN2667478Y (en) * 2003-11-15 2004-12-29 西南师范大学 Pressure type mechanical torque rotating speed angle displacement driving sensor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506648A (en) * 1982-11-01 1985-03-26 Borg-Warner Corporation Controlled displacement supercharger
CN2401448Y (en) * 2000-01-12 2000-10-18 王善聪 Mechanical structure for monitoring chain wheel axle torsion of electric power boosted bicycle
CN2578807Y (en) * 2002-11-05 2003-10-08 长春华隆汽车科技发展有限公司 Steering torque sensor of vehicle
CN2667478Y (en) * 2003-11-15 2004-12-29 西南师范大学 Pressure type mechanical torque rotating speed angle displacement driving sensor

Also Published As

Publication number Publication date
CN1616937A (en) 2005-05-18

Similar Documents

Publication Publication Date Title
CN204730966U (en) Dynamic measures the rotating shaft system of turning moment
CN201607302U (en) Axial force testing device of continuously variable transmission
CN104154203A (en) Scooter shifter
CN2667478Y (en) Pressure type mechanical torque rotating speed angle displacement driving sensor
CN2653471Y (en) Torsion type mechanical torsion rotary speed angle displacement drive sensor
CN2827840Y (en) Hall differential adaptive transmitting sensing linkage of motorcycle
CN100416246C (en) Pressure type mechanical torque, rotation, angle and displacement driving sensor
CN100416255C (en) Torsional mechanical torque, rotation speed, angle and displacement driving sensor
CN107449605B (en) Torsion endurance testing machine for automobile clutch driven disc assembly
CN100585991C (en) Magnetic induction type electric journey tubular electric machine
CN201247386Y (en) Detection device for carbon powder box torque moment
CN100384689C (en) Intelligent balance electric hub of bicycle driving torque-running resistance
CN109878629A (en) Electric bicycle based on strain-ga(u)ge transducer surveys square system
CN1627053A (en) Cam traction type displacement transmission device for sensing angle of rotate speed of mechanical torque
CN105510048B (en) Adhesion testing system and method
CN2660214Y (en) Steel ball/roller ejecting mechanical torque speed driving sensor
CN1629599A (en) Steel ball/roller push type mechanical torsional moment transmission and rotational speed sensing device
CN209656275U (en) A kind of synchronization device cone ring coefficient of friction detection device
CN208254382U (en) A kind of torsion angle detecting device for knurl type camshaft
CN2374854Y (en) Pedal moment testing device for electric cycle
CN1201965C (en) Torsion sensing measurement for vehicle and device for miniturizing big disc
CN202578922U (en) Device for eliminating gear shift impact in automobile
CN100465418C (en) Self-adaptive sensing device in high precision for transmission on motorcycle
CN2774905Y (en) Self adaptive driving sensor for motorcycle
CN1799922B (en) Auto-adaptive driving and sensing device for electric motorcycle

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Foshan City Shunde District Adams Metal Products Co., Ltd.

Assignor: SouthWest China Normal University

Contract fulfillment period: 2008.11.5 to 2013.11.4

Contract record no.: 2009500000001

Denomination of invention: Pressure type mechanical torque, rotation, angle and displacement driving sensor

Granted publication date: 20080903

License type: Exclusive license

Record date: 2009.9.11

LIC Patent licence contract for exploitation submitted for record

Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.11.5 TO 2013.11.4; CHANGE OF CONTRACT

Name of requester: FOSHAN CITY SHUNDE DISTRICT ADAMS METALS FABRICATE

Effective date: 20090911

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080903

Termination date: 20181115

CF01 Termination of patent right due to non-payment of annual fee