[특허]Hitch adapter for double caster wheel trailer

[미국특허] Hitch adapter for double caster wheel trailer 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B60D-001/06
출원번호	US-0789215 (1985-10-18)
발명자 / 주소	Livingston C. Glenn (114 St. Andrews Ct. Columbia SC 29210)
인용정보	피인용 횟수 : 28 인용 특허 : 5

초록 ▼

A trailer hitch structure for coupling a double caster-type wheel trailer to a tow vehicle having a conventional hitch bar fixed thereto and projecting rearwardly thereof. There is provided a rigid vehicle connector having a front portion fixedly connectable to the hitch bar. The front portion connects to a transversely extending rear portion which extends generally parallel to the vehicle bumper. This rear portion mounts adjustable bumper elements adjacent the opposite ends thereof, which bumper elements adjust for snug engagement with the vehicle bumper. A crossbar is positioned adjacent but slightly rearwardly from the rear portion and is coupled thereto through a swivel structure which defines a horizontal roll axis which extends in the longitudinal direction of the vehicle. The crossbar mounts a pair of hitch balls adjacent the opposite ends thereof. The trailer has a tongue structure provided with a pair of sidewardly spaced couplers for releasable engagement with the hitch balls.

대표청구항 ▼

The combination comprising: a vehicle having a trailer hitch mounted thereon, said trailer hitch including a hitch bar which is fixed to said vehicle and projects horizontally rearwardly thereof from below the rear vehicle bumper, said hitch bar having an opening extending vertically therethrough in the vicinity of the free rearward end thereof, said opening normally permitting a conventional hitch ball to be mounted on the hitch bar; a trailer having a pair of sidewardly-spaced caster-mounted wheels thereon for rollingly supporting same, said trailer having a tongue structure mounting thereon in sidewardly spaced relationship a pair of conventional ball-receiving couplers; and adapter means for coupling said trailer to said hitch bar for solely permitting relative vertical articulation between the trailer and the vehicle about (1) a first substantially horizontal axis which extends substantially perpendicular relative to the direction of vehicle movement and (2) a second substantially horizontal axis which extends substantially parallel relative to the direction of vehicle movement; said adapter means including a one-piece rigid T-shaped vehicle connector which has a front portion adapted for rigid connection to said hitch bar and a rear portion which extends transversely of the vehicle in substantially parallel and rearwardly spaced relationship from the rear bumper of the vehicle, said rear portion being positioned upwardly a substantial vertical extent above said hitch bar; said adapter means including a crossbar which is positioned adjacent but spaced rearwardly a small distance from the transversely extending rear portion of said vehicle connector, said crossbar having a pair of hitch balls mounted thereon adjacent the opposite ends thereof, said hitch balls being sidewardly spaced apart by a distance equal to the spacing between said couplers for permitting the couplers to be engaged with said hitch balls, said couplers and their engagement with the hitch balls permitting vertical articulation between the trailer and vehicle about said first horizontal axis; said adapter means including swivel means coacting between said crossbar and said rear portion, said swivel means defining said second horizontal axis for permitting said crossbar and said trailer to undergo vertical rolling movement relative to the vehicle about said second axis, said swivel means including means for longitudinally fixedly securing said crossbar to said rear portion for permitting transmission of towing forces therethrough; and said adapter means including a pair of bumper structures mounted on said rear portion adjacent the opposite ends thereof, each said bumper structure including an elastomeric bumper element adjustably mounted for movement toward and away from the rear bumper of the vehicle, said bumper elements being adjusted forwardly for snug engagement with said rear bumper adjacent the opposite ends thereof to rigidify said rear portion relative to said vehicle bumper.

이 특허에 인용된 특허 (5) 인용/피인용 타임라인 분석

Bourke Robert E. (Westport CT), Camping trailer and automobile-trailer combination.
상세보기
Livingston C. Glenn (114 St. Andrews Ct. Columbia SC 29210), Hitch adapter for single-wheel trainer.
상세보기
Chatterley ; James P., Self steering trailer arrangement.
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Ehrhardt Henry B. (723 E. Highland Dr. Arlington WA 98223), Tracking trailer construction.
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Ungvari Aloysius (9216 Nathaline St. Redford Township ; Wayne County MI 48239) Rubino Frank N. (8701 August Westland MI 48185), Utility trailer.
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이 특허를 인용한 특허 (28) 인용/피인용 타임라인 분석

Chapman,Charles D., Anti-jack-knife trailer hitch and trailer.
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Howell, Jeffrey E., Anti-jackknife system for backing-up a trailer.
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Colibert Floyd A. ; Clarke John D., Ball hitch coupler.
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Jaberian, Mohammad Sadegh, Chassis assembly for an electrical powered vehicle.
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Bellis ; Jr. William B., Convertible sulky.
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Hazen, Donald B., Double-castered wheel trailer having lockable caster wheels.
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Burns Stephen R. (Duluth GA) Boesch Timothy J. (Roswell GA) Rao Matthew D. (Alpharetta GA) Cook Stuart A. (Norcross GA) Curtis Jack M. (Santa Fe TN) Boone Jack M. (Brentwood TN), Grass collecting/utility cart for riding lawn mower.
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Louis J. Ross, Hitch and trailer assembly.
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Ross Louis J., Hitch assembly and trailer.
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Adams,Charles M.; Adams,Michael S., Hydraulic three point hitch.
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Connor, Steven Elliott, Limited articulation trailer and hitch system.
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Craft, Richard D., Self-tracking vehicle trailer.
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Rauch, Jr., Joseph J., Single caster wheel assembly for trailer towable at high speeds.
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William B. Bellis, Jr., Sulky with damper.
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William B. Bellis, Jr., Sulky with removable foot plate.
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Chou Shu-Ying ; Morris Alethea Keesia ; Bryer Giles David, Tow assembly.
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Broemeling, Greg, Towable wheeled vehicle having a steering axle.
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Edens, Dan L., Trailer.
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McCalip, Vincent C., Trailer hitch assembly.
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McCalip,Vincent C., Trailer hitch assembly.
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Olsen, Gary E, Trailer hitching and tracking steering.
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Olsen, Gary E, Trailer hitching and tracking steering.
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Olsen, Gary Edwin, Trailer hitching and tracking steering.
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Satoski,Donald J., Trailer section pivoting about lateral axis and fore-aft axis relative to mower having vacuum system.
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Green, Ralph William, Trailer system.
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Jans, Stanley E., Trailer system for a zero turn radius vehicle.
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Krauss, Gerald W., Transportable storage container assembly.
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Krauss,Gerald W., Transportable storage container assembly.
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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] Hitch adapter for double caster wheel trailer 원문보기