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GB2111442A - Three-wheeled vehicle - Google Patents

Three-wheeled vehicle Download PDF

Info

Publication number
GB2111442A
GB2111442A GB8133679A GB8133679A GB2111442A GB 2111442 A GB2111442 A GB 2111442A GB 8133679 A GB8133679 A GB 8133679A GB 8133679 A GB8133679 A GB 8133679A GB 2111442 A GB2111442 A GB 2111442A
Authority
GB
United Kingdom
Prior art keywords
chassis
stability
wheeled
vehicles
steering
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.)
Withdrawn
Application number
GB8133679A
Inventor
William Fergusson Mccaw
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB8133679A priority Critical patent/GB2111442A/en
Publication of GB2111442A publication Critical patent/GB2111442A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
    • B62K5/02—Tricycles
    • B62K5/05—Tricycles characterised by a single rear wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D61/00—Motor vehicles or trailers, characterised by the arrangement or number of wheels, not otherwise provided for, e.g. four wheels in diamond pattern
    • B62D61/06—Motor vehicles or trailers, characterised by the arrangement or number of wheels, not otherwise provided for, e.g. four wheels in diamond pattern with only three wheels
    • B62D61/065—Motor vehicles or trailers, characterised by the arrangement or number of wheels, not otherwise provided for, e.g. four wheels in diamond pattern with only three wheels with single rear wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
    • B62K5/02—Tricycles
    • B62K5/027—Motorcycles with three wheels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

A three-wheel motor vehicle has a central rear wheel and spaced steerable front wheels which are driven by a front mounted transverse engine and transmission unit. This arrangement offers the combination of maximum stability and front wheel drive and steer with the maximum weight on the front wheels. The key feature is the stability base correctly disposed in such manner that all weight transfer from back to front due to track gradient, forward or transverse, or braking is absorbed by a progressive width of base. This stability feature automatically accommodates the front wheel drive and steer assembly which is incorporated in the transversely mounted engine and transmission unit which in turn meets the requirement of weight in front and the adhesion for driving, braking and steering. All the components necessary for this front end design are already known and used on 4 wheeled chasses but the important stability feature is peculiar to the 3-wheeled chassis. <IMAGE>

Description

SPECIFICATION Improved chassis for 3-wheeled vehicles Technical field-motor cars Background art-3-wheeled vehicles The invention comprises a chassis for 3wheeled self-propelled vehicles wherein all conditions essential for stability and positive and precise handling characteristics are secured by a combination of features which are purposely disposed in a particular relationship.
Stability demands that the stability base, a triangle formed by the position of the three wheels, be properly disposed in relation to the direction of normal travei and such that the base of the triangle is in front, in effect on the line of the front axle and with the apex at the rear.
Steering must be by the two front wheels, one single wheel does not have the adhesion to be effective.
Drive must be by the two front wheels, the chassis must be pulled and not pushed.
Chassis weight must be proportioned such that the major portion is on the front wheels.
These essential requirements can be satisfied completely by a combination of constructional features already known and presently used in a 4wheeled chassis but never applied as a combination in any 3-wheeled chassis.
The invention applies to all classes of light vehicles on a 3-wheeled chassis, private, industrial, agricultural, and 'invalid' type carriages.
Diagrammatic sketches illustrate, Fig. 1 shows this inventibn and Fig. 2 shows vehicles in present production for private and light industrial use and separately for invalid type carriages.
Claims
1. The invention is a 3-wheeled chassis comprising a forwardly mounted transverse engine and transmission unit incorporating axle shafts arranged for driving and steering and the front axle hubs attached by independent suspension mountings. The steering movement is by a rack and pinion assembly forming part of the main unit.
The rear wheel is centrally disposed on the chassis axis and is attached by a trailing arm sprung mounting.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (1)

  1. **WARNING** start of CLMS field may overlap end of DESC **.
    SPECIFICATION Improved chassis for 3-wheeled vehicles Technical field-motor cars Background art-3-wheeled vehicles The invention comprises a chassis for 3wheeled self-propelled vehicles wherein all conditions essential for stability and positive and precise handling characteristics are secured by a combination of features which are purposely disposed in a particular relationship.
    Stability demands that the stability base, a triangle formed by the position of the three wheels, be properly disposed in relation to the direction of normal travei and such that the base of the triangle is in front, in effect on the line of the front axle and with the apex at the rear.
    Steering must be by the two front wheels, one single wheel does not have the adhesion to be effective.
    Drive must be by the two front wheels, the chassis must be pulled and not pushed.
    Chassis weight must be proportioned such that the major portion is on the front wheels.
    These essential requirements can be satisfied completely by a combination of constructional features already known and presently used in a 4wheeled chassis but never applied as a combination in any 3-wheeled chassis.
    The invention applies to all classes of light vehicles on a 3-wheeled chassis, private, industrial, agricultural, and 'invalid' type carriages.
    Diagrammatic sketches illustrate, Fig. 1 shows this inventibn and Fig. 2 shows vehicles in present production for private and light industrial use and separately for invalid type carriages.
    Claims
    1. The invention is a 3-wheeled chassis comprising a forwardly mounted transverse engine and transmission unit incorporating axle shafts arranged for driving and steering and the front axle hubs attached by independent suspension mountings. The steering movement is by a rack and pinion assembly forming part of the main unit.
    The rear wheel is centrally disposed on the chassis axis and is attached by a trailing arm sprung mounting.
GB8133679A 1981-11-09 1981-11-09 Three-wheeled vehicle Withdrawn GB2111442A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8133679A GB2111442A (en) 1981-11-09 1981-11-09 Three-wheeled vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8133679A GB2111442A (en) 1981-11-09 1981-11-09 Three-wheeled vehicle

Publications (1)

Publication Number Publication Date
GB2111442A true GB2111442A (en) 1983-07-06

Family

ID=10525727

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8133679A Withdrawn GB2111442A (en) 1981-11-09 1981-11-09 Three-wheeled vehicle

Country Status (1)

Country Link
GB (1) GB2111442A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0124372A3 (en) * 1983-04-28 1984-12-19 Honda Giken Kogyo Kabushiki Kaisha Three-wheeled motor vehicle
WO2000074622A1 (en) * 1999-06-09 2000-12-14 The Royal Wolverhampton Hospitals 'nhs Trust Transport means
US6948581B2 (en) 2002-02-22 2005-09-27 Bombardier Recreational Products Inc Three-wheel vehicle and concentric intermediate sprocket assembly therefor
CN109968312A (en) * 2017-12-28 2019-07-05 沈阳新松机器人自动化股份有限公司 Base mechanism and its rotating direction control method, robot moving platform

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0124372A3 (en) * 1983-04-28 1984-12-19 Honda Giken Kogyo Kabushiki Kaisha Three-wheeled motor vehicle
WO2000074622A1 (en) * 1999-06-09 2000-12-14 The Royal Wolverhampton Hospitals 'nhs Trust Transport means
US6948581B2 (en) 2002-02-22 2005-09-27 Bombardier Recreational Products Inc Three-wheel vehicle and concentric intermediate sprocket assembly therefor
CN109968312A (en) * 2017-12-28 2019-07-05 沈阳新松机器人自动化股份有限公司 Base mechanism and its rotating direction control method, robot moving platform
CN109968312B (en) * 2017-12-28 2022-02-01 沈阳新松机器人自动化股份有限公司 Base mechanism, steering control method thereof and robot moving platform

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)