[특허]Driving and steering of motor vehicles

Driving and steering of motor vehicles 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B62D-011/06
출원번호	US-0449174 (2012-04-17)
등록번호	US-8695734 (2014-04-15)
우선권정보	GB-0517200.2 (2005-08-22)
발명자 / 주소	Greenwood, Christopher John Cornwell, Ian David
출원인 / 주소	MTD Products Inc
대리인 / 주소	Fulbright & Jaworski LLP
인용정보	피인용 횟수 : 0 인용 특허 : 62

초록 ▼

An arrangement and a method are disclosed for driving and steering an engine driven vehicle of the type m which left and right hand wheels 120L, 120R are respectively driven from the engine through left and right hand transmissions 122L, 122R and a steering effect is exerted by changing the ratio of one transmission relative to the other. According to the invention a follower is operatively coupled to at least one of the transmissions and is movable circumferentially about an axis by means of a driver actuable steering control to change the relative speeds of the two driven wheels and radially with respect to the axis by means of a driver actuable speed control to increase/decrease the speeds of the two driven wheels in unison.

대표청구항 ▼

1. An arrangement for driving and steering a motorised vehicle, the arrangement comprising: a right hand drive arrangement configured to drive a right hand vehicle wheel at a speed which is continuously variable through a range including forward and reverse speeds;a left hand drive arrangement configured to drive a left hand vehicle wheel at a speed which is continuously variable through a range including forward and reverse speeds;a driver actuable speed control;a driver actuable steering control;a guide defining a guide path that is rotatable about an axis by means of the steering control; anda mechanical follower having a position along the guide path that can be affected by means of the speed control;wherein, when the vehicle is steered straight, vehicle speed is controllable by means of the speed control and the left hand drive arrangement is capable of driving the left hand vehicle wheel at a speed equal to the speed at which the right hand drive arrangement is capable of driving the right hand vehicle wheel;wherein movement of the steering control causes a change in the speed of one of the left and right hand vehicle wheels relative to the speed of the other. 2. An arrangement as claimed in claim 1, wherein the guide path intersects its own axis of rotation, so that the follower is able to be positioned on the axis, whereupon rotation of the guide path produces no displacement of the follower. 3. An arrangement as claimed in claim 2, comprising a single rotary driver which is coupled through a right hand transmission to the right hand vehicle wheel to form the right hand drive arrangement, and a left hand transmission which is coupled through a left hand transmission to the left hand vehicle wheel to form the left hand drive arrangement, both transmissions providing continuous variation of their respective drive ratios from forward to reverse. 4. An arrangement as claimed in claim 3 wherein the transmissions comprise respective variators of toroidal-race, rolling-traction type. 5. An arrangement as claimed in claim 3 wherein the transmissions comprise respective variators of hydrostatic type. 6. An arrangement as claimed in claim 3 wherein the rotary driver is an internal combustion engine. 7. An arrangement as claimed in claim 3 which is such that when the follower is positioned upon the axis, it causes both transmissions to adopt a geared neutral state which is maintained regardless of the setting of the steering control. 8. An arrangement as claimed in claim 3 wherein the ratio of both transmissions is controlled by means of a common mechanism and the mechanical follower is coupled to the transmissions through respective levers. 9. An arrangement as claimed in claim 8 wherein movement of the follower along a fore-and-aft direction changes the ratios of both transmissions in the same sense. 10. An arrangement as claimed in claim 8 wherein movement of the follower along a lateral direction changes the ratios of the two transmissions in opposite senses. 11. An arrangement as claimed in claim 1 wherein the guide path is defined by a slot or trench in which the mechanical follower is received. 12. An arrangement as claimed in claim 1 wherein the guide path is defined by means of a first toothed rack which is mounted for rotation about the axis and for longitudinal displacement relative to it. 13. An arrangement as claimed in claim 12 comprising a second toothed rack facing the first, the mechanical follower being formed as a follower pinion engaging with both racks. 14. An arrangement as claimed in claim 13 wherein the first toothed rack engages a control pinion which is itself operably coupled to the speed control, whereby rotation of the control pinion produced by means of the speed control causes the first rack to move longitudinally and so changes radial displacement of the follower pinion from the axis, but rotation of the racks about the axis produced by means of the steering control causes the two racks to move longitudinally in opposite directions and leaves the radial displacement of the follower pinion unchanged.

이 특허에 인용된 특허 (62)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

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Driving and steering of motor vehicles 원문보기

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Driving and steering of motor vehicles 원문보기

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