[특허]Work vehicle

[미국특허] Work vehicle 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B60K-028/04 B62D-001/18 B62D-003/00 B62D-025/10
출원번호	US-0226249 (1988-07-29)
발명자 / 주소	Holm David R. (Oconomowoc WI) Ritter Stephen G. (Juneau WI) Hunt Kenneth E. (Oconomowoc WI) Behrens Robert N. (Beaver Dam WI) Baker Ronald J. (Horicon WI) Hopp Mark F. (Fox Lake WI) Del Ponte Denis J
출원인 / 주소	Deere & Company (Moline IL 02)
인용정보	피인용 횟수 : 65 인용 특허 : 13

초록 ▼

A tractor includes: (a) a one piece frame having opposite ends defined by respective members adapted for receiving ballast with the rear member including a hitch located below any mounted ballast, (b) a dual screen filtering arrangement located upstream of a radiator and an engine combustion air inlet, (c) an implement lift system including a main spring lift assist which is locked out when the implement is lowered and an auxiliary lift assist for increasing the lift assist for front-mounted implements but is mounted so as to join the main lifts assist to produce a near constant lift force during lifting the implement while producing a minimal lift force when the implement is completely lowered (d) short and long effective lengths of a steering pitman arm may be selected, for respectively minimizing steering effort or maximizing responsiveness, by respectively connecting a mounting point closest to or a mounting point farthest from a pivot axis of the arm to a drag link, (e) a steering wheel is tiltable together with a steering column about a u-joint of the latter to a selected position by operation of a cam-operated latch, (f) a hydrostatic transmission is accurately neutralized by speed and direction and brake controls including adjustable arms, rollers and cams, (g) a tractor hydrostatic transmission includes a manually-operable bypass valve which is shiftable to dump the pressure side of the pump for permitting the tractor to be pushed when the engine is not working, the valve being automatically moved to a normal position permitting normal operation of the pump in response to the pump being driven by the engine, and (h) a switch is mounted to a seat structure so as to open, in response to an operator leaving the tractor seat, the mounting of the switch to the seat being such that a load as small as 20 kg applied at any place on the seat will keep the switch closed.

대표청구항 ▼

In a tractor including an operator\s platform, a seat mounting bracket fixed to the platform, a seat coupled to the bracket by a suspension permitting the seat to move vertically relative to the bracket between an upward location which it occupies in the absence of an operator being seated thereon and a lower location which it occupies when an operator is seated thereon, and a normally open operator presence sensing switch being mounted for being closed only when an operator is present in the seat, an improved seat suspension and switch mounting arrangement comprising: a lower seat mounting bracket means defining a pair of parallel spaced apart legs fixed to and extending upwardly from said platform; an upper seat mounting bracket means vertically pivotally mounted to said spaced apart legs and including a pair of parallel, spaced apart depending legs which are each provided with at least one vertically elongated slot; a beam extending between said depending legs and having at least one vertical tab at each end thereof received in a corresponding slot of an adjacent one of the depending legs, the tabs each having a height less than that of the slot; a first pair of coil compression springs respectively positioned adjacent the opposite ends of and being beneath the beam and having respective lower ends engaged with one of the platform or lower seat mounting bracket means; a second pair of coil compression springs positioned between the upper seat mounting bracket means and the beam and respectively being adjacent opposite ends of the beam, the second pair of coil compression springs having a spring rate which is relatively low in comparison to that of the first pair of coil compression springs; and said normally open switch being mounted to the beam and having a depressible plunger positioned between one of said seat and upper seat mounting bracket means so as to be depressed to effect closing of the switch upon sufficient force being applied to the seat to effect deflection of said second pair of coil compression springs.

이 특허에 인용된 특허 (13) 인용/피인용 타임라인 분석

Krueger William R. (West Allis WI) McAuliffe Gerald N. (Lincoln NE) Schlageter George A. (Mequon WI), Computer controlled safety seat switch.
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Behrens Robert Nick (Horicon WI), Neutral start and park brake safety interlock circuitry for a tractor.
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Peterson ; Jr. Rudolph A. (Horicon WI), Neutral start circuit for a vehicle including a power take-off assembly.
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Dobberpuhl Dale R. (Horicon WI) Stricker David K. (Juneau WI), Power take-off system and isolation mounting therefor.
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Wykhuis Lloyd A. (Mayville WI) Brautigam Peter F. (Kewaskum WI), Rear counterweight assembly for a vehicle carrying a front mounted implement.
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Bening Curtis R. (Burnett WI), Safety start and shutdown system for vehicles having electrically activated power take-off.
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Minor Ray C. (Leola PA), Seat interlock for skid-steer loader.
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Tone Masatsugu (Hashimoto JPX) Matsushita Yasuhisa (Sakai JPX), Tractor power take-off system.
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Giandenoto Frank J. (Racine WI) Saiia Anthony J. (Milwaukee WI), Tractor seat-operated hydraulic valve control.
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Federspiel Joseph A. (Port Washington WI), Transmission control brake.
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Irikura Koji (Nishinomiya JPX) Hikishima Keisaku (Kobe JPX) Fujisaki Koichiro (Ashiya JPX), Transmission for self-propelled working vehicles.
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Hicks John E. (Licoln NE), Vehicle seat switch.
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Bando Niro (Sakai JPX) Kurohara Kazuaki (Sakai JPX) Fujima Yasuo (Sakai JPX) Ikeda Fumihiro (Osaka JPX) Usiro Kenzo (Sakai JPX) Ogasawara Hiroyuki (Izumi JPX), Working vehicle equipped with engine automatic stop device.
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이 특허를 인용한 특허 (65) 인용/피인용 타임라인 분석

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Sugden, David J.; Seitter, Eric J.; Mugan, Matthew, Adjustable pump control linkage for pump driven vehicle.
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Greenwood, Christopher John; Cornwell, Ian David, Arrangements for driving and steering of motor vehicles.
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Werner, Gregory K.; Stander, Francois, Cab stay.
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Burbank, William; Dachs, II, Gregory; Murphy, Todd, Double universal joint.
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Richard Donald Teal ; Eugene Gary Hayes ; David Lewis Marchese ; Barry Joseph Goebert, Drive and steer vehicle.
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Richard Donald Teal ; Eugene Gary Hayes ; David Lewis Marchese ; Barry Joseph Goebert, Drive and steer vehicle.
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Greenwood, Christopher John; Cornwell, Ian David, Driving and steering of motor vehicles.
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Greenwood, Christopher John; Cornwell, Ian David, Driving and steering of motor vehicles.
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Wakitani, Tsutomu; Inui, Tsutomu; Kanke, Hiroo, Electric vehicle.
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Hauser, Raymond; Bennett, Michael L.; Bell, Douglas W.; Steenburg, Bryce E., Front steering module for a zero turn radius vehicle.
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Poplawski,Herb M.; Wiley,Thomas D.; Schreier,John D.; Bennett,Michael L.; Holder,Lonnie E.; McClelland,Ralph A., Hydrostatic transmission.
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Poplawski,Herb M.; Wiley,Thomas D.; Schreier,John D.; Bennett,Michael L.; Holder,Lonnie E.; McClelland,Ralph A., Hydrostatic transmission.
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Poplawsli, Herb M.; Wiley, Thomas D.; Schreier, John D.; Bennett, Michael L.; Holder, Lonnie E.; McClelland, Ralph A., Hydrostatic transmission.
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Jaramillo, Jennifer Lynn; Witwer, Jeffrey David; Henson, Robert Alan, Intake screen for a vehicle.
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Rupiper, Christopher Lee; Ferree, John Franklin; Lee, Michael Charles, Interlock of parking brake and drive control pedals for utility vehicle.
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Hinklin Darrell W., Lawn and garden tractor.
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Smyly, Steven D.; Welch, Ned R., Method and apparatus for braking vehicle.
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Dachs, II, Gregory W.; Murphy, Todd E.; Burbank, William A.; McDonald, II, William A.; Schena, Bruce Michael, Motor interface for parallel drive shafts within an independently rotating member.
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Fackrell, Willis; Valov, Bill; Gist, C. Marrs; Kling, Kevin; Rivers, Roger, Mower with vertically movable platform.
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Melone, Mark J.; Marshall, James F.; Smith, Richard; Lynch, Mark; Rasch, Travis; Slegelis, Erik; Weber, Steven J.; Oswald, Denis, Zero-turn radius lawnmower with suspension system.
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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

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[미국특허] Work vehicle 원문보기

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이 특허에 인용된 특허 (13) 인용/피인용 타임라인 분석

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[미국특허] Work vehicle 원문보기

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이 특허에 인용된 특허 (13) 인용/피인용 타임라인 분석

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