[특허]Automatic levelling system

[미국특허] Automatic levelling system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B60S-009/00
출원번호	US-0605802 (1984-05-01)
발명자 / 주소	Hanser Paul E. (Wilton IA)
출원인 / 주소	HWH Corporation (Moscow IA 02)
인용정보	피인용 횟수 : 44 인용 특허 : 4

초록 ▼

A system for automatically levelling a vehicle, such as a recreational vehicle, relative to gravity includes a plurality of extensible jacks, preferably hydraulic, disposed at strategic positions on the bottom of the vehicle. A plurality of switches sense the downward tilting of the vehicle relative to gravity at the strategic positions and produce signals to operate the jacks in accordance with such tilting. The jacks are extended in a particular sequence depending upon the particular directions in which the vehicle is tilted relative to gravity. The jacks become extended only when the hydraulic pressure in a hydraulic circuit exceeds a particular value. Since the rear of the vehicle weighs considerably more than the front, the switches are constructed and are connected in a circuit to resolve any ambiguities in favor of initially operating the jacks at the rear of the vehicle. A delay is preferably provided between the operation of each jack and the operation of the next jack in the sequence so that transients in the levelling of the vehicle from the operation of each jack can be eliminated before the next jack is operated. When the vehicle has been levelled, jacks still not engaging the ground are extended until they engage the ground with a reduced force. When the hydraulic forces in the jacks are less than a particular value while the vehicle is travelling, the hydraulic fluid in the jacks is slowly bled to a reservoir so that hydraulic forces cannot accumulate in the jacks to operate the jacks.

대표청구항 ▼

In combination for use in a vehicle with suspension means including inflatable air bags to level the vehicle relative to gravity, a plurality of jacks each disposed at an individual position relative to the vehicle and in displaced relationship to the other jacks for adjusting the vertical position of the vehicle at the individual positions relative to gravity, means disposed relative to the vehicle for sensing the tilting of the vehicle from a level disposition relative to gravity, means responsive to the sensing means for operating the jacks in a particular sequence to obtain an adjustment in the vertical position of the vehicle at the individual positions and to obtain a resultant levelling of the vehicle relative to gravity, means responsive to a levelling of the vehicle for lowering to the ground any of the jacks still displaced from the ground, and means for deflating the air bags before any operation of the jacks to level the vehicle.

이 특허에 인용된 특허 (4) 인용/피인용 타임라인 분석

Orth ; Joseph P. ; Schmidt ; Gerald F., Electrically operated retractable jack.
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Daniel ; Jr. ; James A. ; Hubbard ; Jr. ; John T., Levelling and stabilization system for a vehicle.
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Hanser Paul E. (Moline IL), Vehicle leveling system.
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Hanser Paul Edmond (Moline IL), Vehicle leveling system and device therefor.
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이 특허를 인용한 특허 (44) 인용/피인용 타임라인 분석

Ford, Robert; Haley, Shawn; Woloszyk, Mark; Manfreda, John, Actuator position homing method and apparatus.
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Eichhorn,Mark M.; Rouch,James E.; Poseley,Alice E.; Sproatt,James N., Apparatus and method for automatically leveling an object.
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Sproatt, James; Posley, Alice; Seiy, Michael; Eichhorn, Mark M., Apparatus and method for automatically leveling an object.
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Sproatt, James; Posley, Alice; Seiy, Michael; Eichhorn, Mark M., Apparatus and method for automatically leveling an object.
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Kunz James R., Automatic leveling system for vehicles.
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Mueller Thomas L. (P.O. Box 69 Germantown IL 62245) Mueller Pamela A. (P.O. Box 69 Germantown IL 62245), Built-in power jack.
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Stacy, II, Edward Curtis, Dynamic jack reference control system and method for extending vehicle jacks.
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Stacy, II, Edward Curtis, Dynamic jack reference control system and method for extending vehicle jacks.
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Friede, John; Schmalz, Mitchell P., Dynamic platform leveling system.
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Ford,Robert M.; Manfreda,John P.; Woloszyk,Mark J.; Haley,Shawn P., Electric jack ground contact detection method and device.
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Ford,Robert M.; Manfreda,John P.; Woloszyk,Mark J.; Haley,Shawn P., Electric jack load balancing method and device.
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Ford,Robert M.; Manfreda,John P.; Woloszyk,Mark J.; Haley,Shawn P., Electric jack stroke limit detection method and device.
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Angel, Bruce Andrew, Electric tongue jack.
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Thompson, Sr., Dennis T., Hydraulic jack extension.
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Rubitzko, Tim; Lauterbach, Frank, Hydraulic system.
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Alanko, Erik; Goetsch, Gregory T., Large powered jack.
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Schwindaman, Michael A.; Rogers, Thomas J.; Howard, Michael W., Leveling jack for vehicle.
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Stalp,Timothy L., Load sensing system.
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Schneider Robert H. (Beaver Dam WI) Jacobs Jon D. (Beaver Dam WI), Manually operated vehicle leveling system.
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Black Delbert Loyd, Method of leveling a recreational vehicle.
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Erickson, John Scott, Multiple screw jack.
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Ford, Robert; Haley, Shawn; Woloszyk, Mark; Manfreda, John, Perceived jack position drift compensation method and apparatus.
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Ford, Robert M.; Manfreda, John P.; Woloszyk, Mark J.; Haley, Shawn P., Platform attitude adjustment augmentation method and apparatus.
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Schneider Robert H. ; Jacobs Jon D., Pseudo four-leg semi-automatic vehicle leveling system.
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Schneider, Robert H., Pseudo four-leg vehicle leveling system with independent leg lock-out.
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Hamilton Mark L. (5154 Camino Del Norte Sierra Vista AZ 85635), Rapid development surveillance vehicle and method.
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Schneider Robert H. (Beaver Dam WI) Jacobs Jon D. (Beaver Dam WI), Semi-automatic vehicle leveling system.
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Hamilton Mark L. (5154 Camino Del Norte Sierra Vista AZ 85635), Surveillance vehicle control system.
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Rakowski Carl F. (20499 Barton Rd. Pickney MI 48169), Suspension system for a sidecar motorcycle.
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VanderWilt, Thomas J.; Buist, Kenneth J., Suspension system with a floating axle lock.
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Stacy, II, Edward Curtis, Systems and methods for detecting jack contact with ground.
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Stacy, II, Edward Curtis, Systems and methods for detecting jack contact with ground.
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Stacy, II, Edward Curtis, Systems and methods for detecting jack contact with ground.
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Lehman, Johnnie Eugene; Lehman, Gary Anthony; Slack, Robert Daniel, Timer based vehicle leveling and stabilization system and method of manufacture.
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Spence Roy, Tire changing system with frame mounted jacks and lug wrench.
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Citron Steven D. ; Davis Michael F. ; Kraemer Matthew G. ; Busuttil John, Trailer personnel lift with a level sensor and manually set outriggers.
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Citron Steven D. ; Davis Michael F. ; Kraemer Matthew G. ; Busuttil John, Trailer personnel lift with a level sensor and manually set outriggers.
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Ford, Robert M.; Haley, Shawn P.; Manfreda, John P., Vehicle attitude adjustment assembly.
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Hawkins, Jr., Melvin L., Vehicle jack for use on vehicles to change tires and for other purposes.
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Raynor,Neil M., Vehicle jack positioning device and method.
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Brett W. Schubert ; Jeffrey K. Goodman, Vehicle leveling assembly.
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Ford, Robert M.; Haley, Shawn P.; Manfreda, John P., Vehicle leveling assembly.
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Schneider Robert H. ; Jacobs Jon D., Vehicle leveling system with actuation signal.
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Schneider Robert H. ; Jacobs Jon D., Vehicle leveling system with excess slope indicator.
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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] Automatic levelling system 원문보기