Patents Examined by John A. Pekar
  • Patent number: 4860842
    Abstract: A four-wheel steering system in a wheeled vehicle includes a lateral control shaft operatively connected at its opposite ends with a set of rear steerable road wheels, and a rear-wheel steering mechanism operatively connected to a front-wheel steering linkage for effecting axial displacement of the control shaft in response to operation of the front-wheel steering linkage. In the rear-wheel steering mechanism, a hydraulic power cylinder is adapted to control axial displacement of the control shaft in such a manner that the control shaft is returned to and retained in a neutral position in the occurrence of unexpected trouble in a hydraulic control circuit of the power cylinder to retain the rear road wheels in their neutral positions.
    Type: Grant
    Filed: October 11, 1988
    Date of Patent: August 29, 1989
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masashi Yamashita, Koichi Sugihara, Hiroshi Kawakami
  • Patent number: 4860849
    Abstract: A method and an apparatus for preventing and, at an early stage, removing wheel spin and a consequent lateral skidding of vehicles while constantly supervising and upon need reducing the momentary torque of the motor by blocking the fuel supply to one or more cylinders of the motor without influencing the optimum fuel/air relationship, whereby the skidding of a vehicle is observed as known per se and the fuel supply to one or more cylinders of the motor is/are completely inhibited in case an unacceptably great skidding is observed, by defining in a controlling means (13) a constant chain of combustions including a predetermined number of successive part-combustions of the motor, and by inhibiting, in case of an actual skidding, first one and then a successively increasing number of part-combustions of the chain of combustion, corresponding to the combustion of some specificly determined cylinders of the motor, said inhibiting being proceeded until the skidding has been brought to cease or has been reduced to
    Type: Grant
    Filed: March 18, 1988
    Date of Patent: August 29, 1989
    Assignee: Autoliv-Cipro Aktiebolag
    Inventors: Bengt H. Andersson, Kent I. Palmgren
  • Patent number: 4858712
    Abstract: A hydraulic power assisted vehicle steering system includes a steering input shaft which is journalled for rotation in a housing and fixed axially in the housing; an inner valve sleeve pinned to the input shaft and rotating therewith; and an outer valve sleeve fixed axially in the housing and rotatable about the inner valve sleeve. Turning the steering input shaft causes relative rotation between the inner and outer valve sleeves, directing fluid flow to control directional assist. The inner valve sleeve slides axially between the input shaft and the outer valve sleeve. Axial sliding movement of the inner valve sleeve progressively covers and uncovers wide end portions of fluid control grooves in one of the valve sleeves. When the wide end portions are uncovered, greater relative rotation between the inner and outer valve sleeves is required before assist is generated.
    Type: Grant
    Filed: August 29, 1988
    Date of Patent: August 22, 1989
    Assignee: TRW Inc.
    Inventor: Charles E. Neff
  • Patent number: 4858942
    Abstract: A bicycle has both manual drive and pedal drive assemblies which may be operated simultaneously or independently. The manual drive assembly is connected to the front wheel and the pedal drive assembly is connected to the rear wheel. Both the manual and pedal drive assemblies incorporate chain drive mechanisms as well as crank assemblies. The manual crank assembly is mounted at the top of the front fork journal and also serves as a handlebar assembly for steering the bicycle. In order to provide sufficient clearance between the chain which extends alongside the front forks and the frame, the frame is bent laterally (just behind the steering sleeve) to accommodate the chain during steering movements. In a first embodiment, the frame member extends generally downwardly and rearwardly from the steering sleeve to a sufficient degree to provide sufficient clearance between the crank assembly to allow the bicycle to be steered while the front wheel is being manually driven.
    Type: Grant
    Filed: August 12, 1988
    Date of Patent: August 22, 1989
    Inventor: Otto Rodriguez
  • Patent number: 4856610
    Abstract: A system for controlling at least one variable influencing the drive torque of an internal combustion engine of a motor vehicle, with an electronic throttle control, an electronic ignition timing control and a control device which becomes active when there is a tendency to spin of at least one driven wheel. The instantaneous engine speed is stored and the drive torque reduced to a certain value, assigned to the engine speed, and subsequently increased again, at a rate of rise dependent on the engine speed, when the tendency of spin of the driven wheel subsides. Consequently, major excess torque are avoided and greater traction and lateral control force is achieved.
    Type: Grant
    Filed: August 29, 1988
    Date of Patent: August 15, 1989
    Assignee: Daimler-Benz Aktiengesellschaft
    Inventors: Heinz Leiber, Hans-Joachim Ohnemuller, Klaus Kastner
  • Patent number: 4856801
    Abstract: A composite material bicycle frame having a single, cantilevered rear wheel suspension member. The rear wheel suspension member is integrally formed into the composite material bicycle frame and is formed with an elliptical cross-section having the major axis thereof disposed horizontally. The elliptical cross-section provides in-plane flexibility to the rear wheel suspension and out-of-plane rigidity. Internal and external vibration dampening devices are provided to dampen rear wheel vibration.
    Type: Grant
    Filed: December 16, 1987
    Date of Patent: August 15, 1989
    Assignee: Cycle Composites, Inc.
    Inventor: Ritchie D. Hollingsworth
  • Patent number: 4856802
    Abstract: A dropout member for bicycle frames is designed to cause an easily replaceble part to separate under stresses which would normally be sufficient to cause bending or other damage to the bicycle frame itself. A relatively lightweight piece of material is bolted, riveted, adhesively bonded or otherwise fastened to the main portion of the dropout such that a torque or bending moment placed upon the derailleur plate serves to fracture or bend the derailleur plate or disengage the attaching mechanism.
    Type: Grant
    Filed: October 12, 1988
    Date of Patent: August 15, 1989
    Inventor: Frederick C. Schilplin
  • Patent number: 4856611
    Abstract: A propelling transmission system of a tractor comprising a front transmission for driving front wheels and a rear transmission for driving rear wheels. The front transmission receives drive from an engine mounted at a front position of the tractor, through a main clutch housed in a clutch case, and transmits the drive to the rear transmission. The rear transmission returns part of the drive to a front wheel change speed mechanism included in the front transmission. The front transmission is housed in a front transmission case directly connected to a lower rearward position of the clutch case.
    Type: Grant
    Filed: September 23, 1988
    Date of Patent: August 15, 1989
    Assignee: Kubota, Ltd.
    Inventors: Akira Teraoka, Hajime Shikiya
  • Patent number: 4856800
    Abstract: A bicycle frame of the present invention is formed as follows.First, the worker puts and bonds a pipe made by fibre reinforced plastics around a cylindrical projecting part of a lug made by thin wall thickness light alloy.Next, the worker covers a joining part of the said projecting part of a lug and pipe made by fibrer reinforced plastics by sheet molding compound, (hereinafter it is called "SMC").Last, the joining part of the projecting part of a lug and the pipe covered by said SMC is put in a molds for compression molding.As the SMC consists of required quantity of plastics and chopped fibre same as filament comprised in the pipe made by fibre reinforced plastics, bonding of the pipe made by fibre reinforced plastics and said SMC is very good. Consequently, the joining strength of the pipe and lug is very strong in the present invention.
    Type: Grant
    Filed: April 26, 1988
    Date of Patent: August 15, 1989
    Assignee: Araya Industrial Co., Ltd.
    Inventors: Masaki Hashimoto, Noboru Yamaguchi
  • Patent number: 4856799
    Abstract: A foldable portable snowmobile tow bar is set forth for the towing of disabled snowmobiles provided with a forward hitch pivotally mounting a plurality of legs foldable surrounding said hitch in a first position and extending rearwardly of said hitch in a second position. An adjustable cross link securing the two legs together fixedly secures the two legs in a predetermined angulation relative to one another in said second position. A plurality of through extending pins in respective bifurcated ends secures said tow bar and said legs to an associated disabled snowmobile.
    Type: Grant
    Filed: June 8, 1988
    Date of Patent: August 15, 1989
    Inventor: Douglas L. Hawn
  • Patent number: 4854410
    Abstract: A four-wheel steering system has a front wheel turning mechanism for turning front wheels in response to operation of a steering wheel, a rear wheel turning mechanism for turning rear wheels, a controller for controlling the rear wheel turning mechanism to turn the rear wheels according to preset four-wheel steering characteristics and a relay shaft which is connected to the controller to transmit turning of the front wheels to the controller. The front wheel turning mechanism and the rear wheel turning mechanism are caused to bring the front wheels and the rear wheels to the respective straight-ahead positions while the relay shaft is disconnected from the controller. Then the controller is brought into the state corresponding to the straight-ahead positions of the front and rear wheels on the basis of the preset four-wheel steering characteristics. Thereafter, the relay shaft is connected to the controller.
    Type: Grant
    Filed: February 22, 1988
    Date of Patent: August 8, 1989
    Assignee: Mazda Motor Corporation
    Inventors: Hirotaka Kanazawa, Koushun Note, Yasuhiro Nakashima, Yoshiaki Mukai, Shunji Sakamoto, Shigeo Okamizu
  • Patent number: 4854408
    Abstract: A tracked vehicle with a rearwardly extending ram (13) and an energizing means (14) for the ram, for assisting the vehicle in mounting precipitous objects. A preferred vehicle configuration uses only three, track direction changing rollers (6, 7, 8) so as to locate the center of gravity (16) of the vehicle as far forward as possible.
    Type: Grant
    Filed: August 7, 1987
    Date of Patent: August 8, 1989
    Assignee: The Secretary of State for Defence in her Majesty's Government of the United Kingdom of Great Britian and Northern Ireland
    Inventors: David R. Beard, Peter J. Gibson, Christopher B. Hinchey
  • Patent number: 4850446
    Abstract: In a system for controlling the propulsion on motor vehicles, by a reduction of the drive torque by an intervention in ignition, carburator or fuel injection and/or brakes, includes a first device which reduces the drive torque when the maximum adhesion coefficient is exceeded, and a second device which reduces the drive torque to a value associated with the measured maximum value of the vehicle acceleration when the monitored wheel variable exceeds the threshold value, as a result of which too great an excess of torque is prevented and sufficient traction and cornering stability are retained without unnecessarily slowing down a propulsion of the motor vehicle.
    Type: Grant
    Filed: August 29, 1988
    Date of Patent: July 25, 1989
    Assignee: Daimler-Benz Aktiengesellschaft
    Inventors: Heinz Leiber, Hans-Joachim Ohnemuller, Klaus Kastner
  • Patent number: 4850607
    Abstract: A one-piece, ultralight, generally hollow bicycle frame having no internal structural components, and a method of manufacturing such a frame, are disclosed.
    Type: Grant
    Filed: May 12, 1987
    Date of Patent: July 25, 1989
    Inventor: Brent J. Trimble
  • Patent number: 4850447
    Abstract: A power transmission apparatus for a vehicle which is used for a four-wheel drive vehicle driving both the front and rear wheels by a driving force from an engine, in which a discharge amount of a hydraulic pump provided between a front wheel drive shaft and a rear wheel drive shaft to generate hydraulic pressure by a rotation speed difference between the two rotary shafts is desirably adjusted by a remote-controllable variable throttle valve provided on the way of a discharge oil passage extending from the hydraulic pump, so that a simple hydraulic circuit is used to make the coupling of two rotary shafts freely adjustable from loose condition to tight condition.
    Type: Grant
    Filed: May 17, 1988
    Date of Patent: July 25, 1989
    Assignee: Koyo Seiko Co., Ltd.
    Inventors: Shuzo Hirakushi, Yoshiaki Hamasaki, Goki Shimamura
  • Patent number: 4848503
    Abstract: A small snowmobile powered by a scooter type engine transmission mechanism incorporating a kick starter that is positioned to be operated by a rider seated upon the seat of the snowmobile.
    Type: Grant
    Filed: March 4, 1988
    Date of Patent: July 18, 1989
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Toshihiro Yasui, Masanobu Yamamoto
  • Patent number: 4848507
    Abstract: To the end of eliminating the problems arising from substantially rigid connection between a front wheel set and a rear wheel set in a four-wheel drive vehicle, there is provided a power transmission system in which a torque-dependent power transmission device is provided between the front wheel set and the rear wheel set so that both the wheel sets are substantially rigidly connected to each other in a low torque range and rotational power is transmitted only from the front wheel set to the rear wheel set in a high torque range. The power transmission device of this kind can be conveniently formed by a parallel combination of a one-way clutch and a torque limiter.
    Type: Grant
    Filed: January 27, 1988
    Date of Patent: July 18, 1989
    Assignee: Honda Giken Kogyo K.K.
    Inventors: Katsuhiko Masuda, Kazuhiko Shimada, Tetsuro Hamada, Kazunori Shibuya
  • Patent number: 4848501
    Abstract: A small sized air cushion vehicle includes a hull having a planar bottom surface with an upstanding lower flange disposed and extending upwardly at an angle of between 24.degree. and 30.degree. with respect to the planar bottom surface of the hull. A hollow plenum extends through the periphery of the hull. Apertures are formed in the upstanding lower flange of the hull and disposed in fluid flow communication with corresponding apertures in a plurality of inflatable members which are attached to the flange of the hull. Each inflatable member includes a downwardly extending aperture which directs air flow from the hollow plenum in the hull through each of the inflatable members to lift the vehicle a short distance above an underlying surface as well as providing forward or sideways propulsion. A steering mechanism is mounted rearward of the fluid propulsion source to control the direction of movement the vehicle.
    Type: Grant
    Filed: May 7, 1987
    Date of Patent: July 18, 1989
    Inventors: Matthew Goodwin, William Goodwin
  • Patent number: 4848500
    Abstract: Apparatus for controlling the steering power of a power steering system of a vehicle wherein there are employed two variable throttles and a fixed throttle between the variable throttles connected to a pump discharge, each variable throttle having an opening controlled in accordance with the vehicle speed or a steering angle and regulated oil pressure between the fixed throttles and one of the variable throttles is led to a hydraulic reaction chamber when the vehicle is running at low or middle speed and regulated oil pressure between the two variable throttles is led to the hydraulic reaction chamber when the vehicle is running at a high speed.
    Type: Grant
    Filed: May 18, 1988
    Date of Patent: July 18, 1989
    Assignee: Koyo Seiko Co., Ltd.
    Inventors: Ryuichi Komine, Osamu Sano
  • Patent number: RE33012
    Abstract: The disclosure relates to a means of coupling a trailer to an automobile comprising a self-aligning and shock-absorbing coupling means. The coupling means uses a fifth wheel and spring-loaded roller-detent means to maintain alignment in yaw between the vehicle and the trailer. A speed-responsive means reduces the "stiffness" in yaw between the automobile and the trailer when the vehicle speed is below a predetermined value.
    Type: Grant
    Filed: August 8, 1989
    Date of Patent: August 8, 1989
    Inventor: Durrell U. Howard