Bruce S Rigsby, Troy Lynn Roney: Power and communications link between a tractor and trailer. Grote, Woodard Emhardt Naughton Moriarty & McNeit, April 14, 1998: US05739592 (142 worldwide citation)

A system for providing an electrical power and electronic communication link between a tractor and trailer includes a tractor module associated with the tractor and a trailer module associated with the trailer. The tractor module controls a plurality of switching devices operable to switch a corresp ...

Einar Aarseth: Electric vehicle service center and method for exchanging and charging vehicle batteries. Dean A Craine, December 7, 1999: US05998963 (136 worldwide citation)

Disclosed herein is a service center and method designed to promote the use of a battery-powered, electric vehicle which allows a discharged battery to be easily and quickly replaced in the electric vehicle and then recharged for use in another electric vehicle. The service center and method uses a ...

Larry W Griffin: Alignment guide for a trailer hitch. George L Williamson, November 23, 2004: US06820888 (122 worldwide citation)

The present invention discloses an alignment guide for trailer hitches for a person backing a vehicle having thereon a trailer hitch ball into proper alignment with the tongue and trailer hitch socket of a trailer. The present invention comprises a telescopic guide post for attachment onto the top o ...

Yuichi Kawakami, Nobukazu Kawagoe: Automatic vehicle. Minolta, Burns Doane Swecker & Mathis, September 7, 1999: US05947225 (99 worldwide citation)

A vehicle has a sensor for detecting a first distance to a first object and a second distance to a second object located on the other side of the first object. The vehicle travels along a path between the first object and the second object based on the detected first and second distances.

Scott S Kimbrough, R Scott Vincent, Chunchih Chiu: Steering control system for trailers. University of Utah Research Foundation, Jon C Christiansen, Daniel P McCarthy, Mark G Sandbaker, November 26, 1996: US05579228 (82 worldwide citation)

An angle sensor for measuring an angle .theta. between two rigid bodies rotatably joined at a joint. The angle sensor includes an indicator disk, an anchor strap and a reading means for reading the indicator disk. Our invention also includes forward and backward motion steering control systems which ...

Terry L Nelson: Trailer hitching aid and method using reception delay of different velocity signals. Donald L Gambill, Olson & Olson, March 2, 1993: US05191328 (82 worldwide citation)

A trailer hitching aid includes a dual transmitter mounted on the forward end of a trailer or other vehicle to be towed and arranged to transmit pulses of infrared light and pulses of ultrasonic sound. A towing vehicle mounts on its rear end an infrared light detector and a pair of laterally spaced ...

Steven J Hipp, Norbert Hahn: Releasable locking device. Rite Hite Corporation, Neuman Williams Anderson & Olson, February 15, 1983: US04373847 (69 worldwide citation)

A releasable locking device is provided for securing a parked vehicle to an adjacent upright structure. The device includes a first means mounted on the upright structure and a second means mounted on the first means for vertical movement relative thereto between operative and inoperative mode posit ...

Cook Neal A, Friedenfeld Gerard: Vehicle space closing means. Donnell Emerson B, September 10, 1974: US3834752 (68 worldwide citation)

This disclosure relates to large motor trucks commonly known as semi-trailers and to an arrangement for closing or filling in the rather substantial space which necessarily exists between the tractor cab and the trailer body, as well as the space between two trailer bodies in the case of tandem trai ...

Derek C Roberts, Walford A Anderson: Swing away hitch assembly for a trailer and method of manufacturing same. Tracker Marine, Kokjer Kircher Bowman & Johnson, April 2, 1996: US05503423 (66 worldwide citation)

The invention relates to a swing away hitch for a trailer and method of making same. The hitch is intended to allow the trailer to be parked in a building only slightly longer than the boat itself. Boat trailer hitches extend beyond the bow of the boat by some distance, and thus these trailers requi ...

John P Fromberg: Three-axis trailer hitch having improved rotatable coupling between vehicle and trailer. Positive Connections, B F Spencer, December 8, 1987: US04711461 (62 worldwide citation)

A trailer hitch is disclosed for providing coupling about three independent axes between a towing vehicle and a trailer. The hitch includes a first U-shaped yoke member having a base plate adapted for attachment to the towing vehicle and having a pair of spaced-apart arms receiving and supporting a ...

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