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Prop Stand For Two Wheeled Vehicles

Abstract: PROP STAND FOR TWO-WHEELED VEHICLES The present invention is a prop stand retractor and extender of a two-wheeler which works automatically. Thus, avoids an accident caused by the rider, overlooking the retraction of the prop stand 3. A bi-directional motor 10 capable of rotating the worm 7 in both a clockwise and an anti-clockwise direction is being used for retraction and extension of the prop stand 3. The required amount of torque for the motor 10 is obtained from a worm gear train that also helps the prop stand 3 at retracted position by self-locking. A wheel speed sensor 6 is applied to acquire the actuation input signal from the gearbox. The mechanism can be applied for scooters, motorcycles, and mopeds, and is very helpful for riders of short height.

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Notices, Deadlines & Correspondence

Patent Information

Application #
Filing Date
29 July 2016
Publication Number
05/2018
Publication Type
INA
Invention Field
MECHANICAL ENGINEERING
Status
Email
office@patnmarks.com
Parent Application

Applicants

TVS Motor Company Limited
No.29, Haddows Road Chennai – 600006

Inventors

1. KOMPELLA VENKATA NAGA SATYA HARIKA
TVS MOTOR COMPANY LIMITED JAYALAKSHMI ESTATES, NO.24 (OLD NO.8), HADDOWS ROAD CHENNAI – 600006
2. PRAMILA RAO NILESHWAR
TVS MOTOR COMPANY LIMITED JAYALAKSHMI ESTATES, NO.24 (OLD NO.8), HADDOWS ROAD CHENNAI – 600006
3. SAMRAJ JABEZ DHINAGAR
TVS MOTOR COMPANY LIMITED JAYALAKSHMI ESTATES, NO.24 (OLD NO.8), HADDOWS ROAD CHENNAI – 600006

Specification

WE CLAIM:
1. An automatic prop stand system to prevent accidental extension during riding of a two-wheeled vehicle comprising, (a) a bolt 1, (b) a spring 2, (c) a prop stand 3, (d) a hook 4, (e) a rear wheel 5, (f) a wheel speed sensor 6, (g) a worm 7, (h) a worm gear 8, (i) a nut 9, (j) a motor 10, (k) a rivet 11, (l) mounting brackets 12,13, (m) a vehicle frame 14, (n) a spacer 15, (o) a pin 16, and (p) a circuit wherein:
i. The bolt 1 holds the prop stand 3 onto a bracket such that the prop stand 3 is free to rotate about a point fixed by the bolt 1;
ii. The spring 2 holds the prop stand 3 either in an extended or in a retracted position;
iii. The wheel speed sensor 6 is installed to sense speed of rotation of the rear wheel 5 of the two-wheeled vehicle;
iv. The worm 7 is mounted on the shaft of the motor 10, and the worm gear 8 is mechanically coupled with the worm 7;
v. The motor 10 is a bi-directional motor capable of rotating the worm 7 in both a clockwise and an anti-clockwise direction, said motor 10 is mounted on a motor mounting bracket 12;
vi. The nut 9 and the bolt 1 hold the worm gear 8 and prop stand 3 onto a mounting bracket 13 attached to the vehicle frame 14; and
vii. The spacer 15 and the pin 16 on the mounting bracket 13 hold the spring 2 in place while the rivet 11 on the prop stand 3 holds the other end of the spring 2.

2. The automatic prop stand system of Claim 1, wherein the worm 7 can be integrated onto a motor shaft by cutting the teeth onto the motor shaft.
3. The automatic prop stand system of Claim 1, wherein the motor 10 gets input signal for actuation of said worm 7 from the wheel speed sensor 6 to rotate for extraction and retraction of the prop stand 3.
4. The automatic prop stand system of Claim 1, wherein a worm gear train is used to generate the required amount of torque and also aids to keep the prop stand 3 at the retracted position by self-locking.
5. The automatic prop stand system of Claim 1, wherein the frequency from the wheel speed sensor 6 is converted to a fixed voltage value by the circuit comprising, capacitors C1, C2, diode D1, D2, transistor Q1, resistors R1, R2, battery voltage V2, and output V1 from the wheel speed sensor 6, wherein:
i. Battery voltage V2 is fed to the base of PNP type transistor Q1,
(a) If V1 is high, the voltage across the capacitor V(n001) becomes higher than a base voltage, the transistor Q1 is switched ON, and the capacitor C2 is charged; and
(b) If V1 is lower, the voltage across the capacitor V(n002) becomes below the base voltage, the transistor Q1 is switched OFF and the capacitor C2 is discharged through the resistor R2;

ii. The voltage across the resistor R2 is compared with a reference voltage by a comparator U1;
iii. For retraction of the prop stand 3 when the wheel moves, the non-inverting input to the comparator U1 becomes larger than the reference value, a RELAY 1 switches ON and rotates the motor 10 thereby lifting the prop stand 3, a limit switch LS1 ensures the retraction of prop stand to the desired position by impeding the motor 10; and
iv. In ignition switched OFF condition, the prop stand 3 is brought under extension by operating a push button S1, an operation of said push button S1energises RELAY 2 and a limit switch LS2 extends the prop stand 3 to a desired position by stopping the motor 10.
6. The automatic prop stand system of Claim 1, wherein the limit switches LS1 and LS2 are atleast one of a contact type switches and a non-contact type switches which determine the operating range of prop stand 3.
7. The automatic prop stand system of Claim 1, wherein if non-contact type limit switches LS1 and LS2 are used then, it could be either of reed switch type or Hall-effect switch type.
8. The automatic prop stand system of Claim 1, wherein the retraction is possible only during “ignition off” condition by the push button S1, thus preventing accidental extension of prop stand while riding.

9. The automatic prop stand system of Claim 1, wherein the push button switch S1 is installed in front handlebar assembly for ease of user to deploy the prop stand 3.
10. The automatic prop stand system of Claim 1, wherein rectified voltage from magneto and regulator supplies the energy required for the motor 10 to retract prop stand 3 without a need of power from a battery.

Documents

Application Documents

# Name Date
1 Form 3 [29-07-2016(online)].pdf 2016-07-29
2 Drawing [29-07-2016(online)].pdf 2016-07-29
3 Description(Provisional) [29-07-2016(online)].pdf 2016-07-29
4 201641026071-Power of Attorney-030816.pdf 2016-08-09
5 201641026071-Form 1-030816.pdf 2016-08-09
6 201641026071-Correspondence-F1-PA-030816.pdf 2016-08-09
7 OTHERS [10-07-2017(online)].pdf 2017-07-10
8 Drawing [10-07-2017(online)].pdf 2017-07-10
9 Description(Complete) [10-07-2017(online)].pdf_253.pdf 2017-07-10
10 Description(Complete) [10-07-2017(online)].pdf 2017-07-10
11 Correspondence by Agent_Recorrection_12-03-2018.pdf 2018-03-12
12 201641026071-FORM 18 [28-06-2020(online)].pdf 2020-06-28
13 201641026071-FER.pdf 2023-04-12
14 201641026071-OTHERS [11-10-2023(online)].pdf 2023-10-11
15 201641026071-FER_SER_REPLY [11-10-2023(online)].pdf 2023-10-11
16 201641026071-DRAWING [11-10-2023(online)].pdf 2023-10-11
17 201641026071-CORRESPONDENCE [11-10-2023(online)].pdf 2023-10-11
18 201641026071-COMPLETE SPECIFICATION [11-10-2023(online)].pdf 2023-10-11
19 201641026071-ABSTRACT [11-10-2023(online)].pdf 2023-10-11
20 201641026071-US(14)-HearingNotice-(HearingDate-24-09-2025).pdf 2025-08-22
21 201641026071-RELEVANT DOCUMENTS [22-09-2025(online)].pdf 2025-09-22

Search Strategy

1 searchstrategy201641026071E_24-02-2021.pdf