Landing Gear And Coupling Interlock Patents (Class 280/431)
  • Patent number: 10539130
    Abstract: A pressure-maintaining valve arrangement of a purge circuit of a closed hydraulic circuit includes a pressure-maintaining valve configured to be shut off via a pilot valve. In one embodiment, a control pressure chamber, acting in the closing direction, of the pressure-maintaining valve is configured to be relieved via the pilot valve to a tank, and the pressure-maintaining valve is closed via a spring acting in the closing direction. In another embodiment, the valve arrangement includes an additional control pressure chamber acting in the closing direction. The additional control pressure chamber is configured to be loaded via the pilot valve, and the pressure-maintaining valve closes. The pressure of the inlet of the pressure-maintaining valve is used for this purpose.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: January 21, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Christian Frick, Hakan Camurdan, Markus Gepraegs, Stephan Rohde
  • Patent number: 9505279
    Abstract: A fifth wheel for use between a tractor and a trailer wherein the trailer has a king pin comprising a frame mounted on the tractor, a lower plate member, an intermediate plate member formed of a low friction material and mounted on the lower plate member, an upper plate member covering the low friction layer, a coupling support mounted on the upper plate member and a king pin retention device mounted on the coupling support.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: November 29, 2016
    Inventor: Bertin Poirier
  • Patent number: 9120492
    Abstract: A control valve assembly for a load carrying vehicle that includes a dumping mechanism. The control valve assembly including a housing, a valve, and a biasing device. The valve is movable between a dumping position, and a closing position. The biasing device including a biasing device housing and a piston moveable between a first piston position and a second piston position relative to the biasing device housing. A biasing element is arranged between the biasing device housing and the piston to bias the piston toward the first piston position. The biasing device directly contacts the valve when in the first piston position to inhibit movement of the valve, and the biasing element is calibrated to allow the piston to move to the second piston position when air provided by an air compressor reaches a predetermined pressure, thereby not inhibiting movement of the valve.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: September 1, 2015
    Assignee: Aventics Corporation
    Inventors: Lawrence J. Fry, Joshua B. Anderson
  • Patent number: 8840129
    Abstract: A trailer adapted to be coupled to a tow vehicle and including a frame including a draw bar tube defining a longitudinal axis. The trailer includes a drawbar support pivotally coupled to the draw bar tube and rotatable relative to the drawbar tube about an axis parallel to the longitudinal axis. The drawbar support is biased toward a substantially horizontal orientation. A sliding member is receivable in the drawbar tube and is configured for movement along the longitudinal axis in response to movement of the tow vehicle. A latch member is connected to the sliding member. The latch member is configured to move in response to movement of the sliding member from a first position wherein the drawbar support is retained in a substantially vertical orientation to a second position wherein the draw bar support is free to rotate toward the substantially horizontal orientation.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 23, 2014
    Assignee: Clark Equipment Company
    Inventors: Peter Edgeller, Craig Buxton
  • Publication number: 20090179400
    Abstract: A rotational jack assembly is provided to support a portion of a trailer. The jack assembly has a pivot mount with a pivot axis, a mounting plate rotatable about the pivot axis and a pin receptor with a first and second portion. The mounting plate carries a support assembly and a locking pin. The locking pin is engagable with the pin receptor, and adapted to move between the first and second portions of the pin receptor upon application of rotational force. A force activated locking assembly and a breakaway support assembly are also provided for supporting a portion of a trailer. A method of use for the rotational breakaway trailer jack assembly is also disclosed.
    Type: Application
    Filed: January 13, 2009
    Publication date: July 16, 2009
    Inventors: Billy J. Van Der Plaats, Boyd K. Steenblock
  • Patent number: 6250650
    Abstract: An automatic fifth wheel loading and unloading system which is designed to automatically unlock and disengage a trailer from the fifth wheel apparatus in a towing vehicle such as a pickup truck and level and then recouple the trailer to the vehicle. The automatic fifth wheel loading and unloading system initially raises the trailer coupler a predetermined distance, unlocks the trailer hitch mechanism in the fifth wheel and opens it on command. The truck or towing vehicle is then pulled forwardly from beneath the trailer coupling mechanism and the trailer is automatically lowered into a level position. When the trailer is to be recoupled to the towing vehicle, the trailer is automatically raised to an access position by operation of a memory circuit, the truck is positioned such that the fifth wheel mechanism is located beneath the trailer coupling mechanism and the trailer coupling mechanism is automatically lowered into engagement with the fifth wheel.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: June 26, 2001
    Inventor: Leland H. Douglas
  • Patent number: 6164425
    Abstract: A recreational equipment luggage transport system, an auxiliary transport apparatus, and methods for transporting recreational equipment are provided. The system preferably includes an enlarged main piece of recreational equipment storage luggage having enlarged recreational equipment positioned therein. The enlarged recreational equipment, for example, preferably has a longitudinal extent substantially longer than a standard adult size tennis racket. The main piece of luggage includes a main luggage frame, at least one wheel member connected to a lower end portion of the main luggage frame, a cover connected to the main luggage frame and sized to position large recreational equipment therein, and an auxiliary transport apparatus pivotally connected to the main luggage frame.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: December 26, 2000
    Assignee: Seven Oars, Inc.
    Inventor: Ricky J. Latshaw
  • Patent number: 6149168
    Abstract: A carrier for tools and the like has a base normally adapted to sit on a floor surface, a frame extending upward from the base, and a hollow case adapted to hold the tools and having bottom, top, and side walls displaceable on the frame between a lower position sitting on the base and an upper position on the frame spaced above the base. This frame includes at least one generally vertical post and the case is vertically slidable along the post. A latch or the like is provided for retaining the case in the upper position on the post. The latch includes a spring-loaded latch that automatically secures the case in the upper position when it is slid into the upper position. In addition the frame includes two such posts parallel to each other and the upper wall is provided generally centrally with a handle. Each post includes an upper tube and a lower tube telescoping there-with. The lower tubes are fixed in the base and each post projects through the lower wall and through the upper wall of the case.
    Type: Grant
    Filed: January 15, 1999
    Date of Patent: November 21, 2000
    Assignee: Parat-Werk Schonenbach GmbH & Co. KG
    Inventors: Herbert Bernhard Pauser, Martin Topel
  • Patent number: 6131917
    Abstract: The invention relates to a towing device for a golf trolley comprising longitudinal resilient linkage means. The linkage comprises a spring, a damper for the resilient portion, the remainder of the linkage being rigid, and means at one end of the linkage for pivotal attachment of the linkage to the bag-carrying part of the trolley. The towing device may be incorporated in the handle of a trolley or may be an accessory attachable to the trolley. The damper may comprise a piston-and-cylinder type damper which may contain air or other gas or oil or other hydraulic fluid. Embodiments using telescopic cylinders are also described. The extent of pivotal movement of the towing device relative to the bag-carrying part of the trolley is restricted by a flexible link or spring. The device may be attached to a belt or other item of clothing on the trunk of a user, and the trolley may have an auxiliary wheel fitted to the bottom of the bag-carrying part.
    Type: Grant
    Filed: April 24, 1998
    Date of Patent: October 17, 2000
    Inventor: Paul Walsh
  • Patent number: 6082510
    Abstract: A supporting device for a wheeled suitcase includes a positioning member, a leg member, a locking unit and a biasing member. The positioning member is mounted on a back wall of the suitcase, and has a mounting wall in a longitudinal direction, and a positioning unit disposed on an upper end of the mounting wall to extend in a first transverse direction. The positioning unit has a pivot member that extends in the first transverse direction. The leg member is pivoted to the pivot member at the upper end so as to turn therearound to an operative inclined position, or so as to move toward the mounting wall in order to be folded thereto. The leg member defines an opening for access to the mounting wall. The locking unit is disposed to be accessible via the opening, and includes a retaining member and an engaging tongue disposed on the mounting wall and the leg member, respectively.
    Type: Grant
    Filed: January 6, 1999
    Date of Patent: July 4, 2000
    Inventor: Sung-Ming Liang
  • Patent number: 6070899
    Abstract: A self-retracting cart for use in the cargo bay of a sport utility vehicle. When a pair of front wheels are caused to roll on and into the cargo bay by the self-retracting cart for use in the cargo bay of a sport utility vehicle being pushed therein, a push plate is caused to press against the rear edge of the cargo bay and traverse rearwardly causing a pair of arms to traverse rearwardly and cause a pair of spreader brackets to fold which causes a pair of front struts to pivot upwardly against a bottom wall of the basket and retract a pair of intermediate wheels against the pair of side walls of the basket and out of the way and thereby retracting the front wheel assembly.
    Type: Grant
    Filed: May 28, 1998
    Date of Patent: June 6, 2000
    Inventor: Roberto Gines
  • Patent number: 6068270
    Abstract: A cart for carrying a golf bag is disclosed, comprising, one or two brackets 100 installed in a golf bag 1; a pair of insertion plates 200 detachably installed in the bracket(s) 100; a pair of bearing parts 300 installed in each of the insertion plates 200, each of the bearing parts 300 having a first bearing 310 and two second bearings 320, the second bearings 320 being located in both sides of the first bearing 310 at suitable intervals (T) and each having at least two keeping grooves 323 in the circumference of shaft holes 322 in the inside surfaces 321 thereof, two pairs of shafts 400 each having at least one keeping protrusion 411 which is selectively inserted in the keeping grooves 323 to limit the rotation of the shafts 400 selectively, each of the shafts 400 being rotatably supported between the first bearing 310 and each of the second bearings 320; and a pair of leg parts 500 each having a wheel 510 and at least one V-shaped leg 520 whose branched upper ends are pivotally connected to each of the sha
    Type: Grant
    Filed: October 7, 1998
    Date of Patent: May 30, 2000
    Assignee: Korea Sports Co., Ltd.
    Inventor: Jung Han Kim
  • Patent number: 6056301
    Abstract: A golf bag having retractable wheels and handle including a golf bag having a peripheral shell extending downwardly therefrom. The peripheral shell has an open lower end. A pair of wheels are retractably disposed within the peripheral shell of the golf bag in a closed orientation. A handle portion is provided having a T-shaped configuration defined by a lower vertical segment and an upper horizontal segment. The lower vertical segment is coupled with respect to the pair of wheels. A spring-locking mechanism selectively locks the handle portion with respect to the pair of wheels.
    Type: Grant
    Filed: May 28, 1999
    Date of Patent: May 2, 2000
    Inventors: Michael Berliner, Mark Tabakin
  • Patent number: 5873439
    Abstract: A supporting device for a wheeled suitcase includes a positioning member to be mounted on the back wall of the suitcase, and a leg member which has an upper end connected pivotally to the positioning member and a bottom wheel. The leg member is turnable outward from the back wall of the suitcase to be in an operative inclining position and inward to be in a position folded over the back wall. A locking member can lock the leg member in the operative inclining position. The locking member is operable for releasing the leg member.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: February 23, 1999
    Inventor: Sung-Ming Liang
  • Patent number: 5810543
    Abstract: A ground-loading conveyance for refuse or heavy objects. The frame is tipped with the handle to allow a two wheel carriage on pivoting support legs to swing beneath the frame, so as to support the load for transporting.
    Type: Grant
    Filed: January 13, 1997
    Date of Patent: September 22, 1998
    Inventor: John R. Hall
  • Patent number: 5765843
    Abstract: A hand truck for moving sheet material has a laterally extending shelf and a generally upright frame, which extends upwardly from the shelf. The frame may be formed by tubular metal of generally inverted U-shape and together with the frame support a load. The hand truck has a pair of inline primary wheels, mounted on fixed parallel axes, near the two ends of the shelf and the lower ends of the two sides of the frame. The two primary wheels lie in a common plane. A turning wheel, also mounted for rotation about a fixed axis, is situated midway between the two primary wheels but slightly out of line therewith. The turning wheel is of smaller diameter than the two primary wheels, and the plane in which it is mounted forms a small acute angle with the plane of the primary wheels. The turning wheel is out of contact with a supporting surface when both primary wheels touch the supporting surface.
    Type: Grant
    Filed: January 26, 1996
    Date of Patent: June 16, 1998
    Inventor: Wayne A. Miller
  • Patent number: 5624143
    Abstract: A drop down bumper suitable for attachment to a frame of a transportable container or to a truck. The drop down bumper is equipped with loading rollers and is movable between a folded position and an extended position. When the drop down bumper is in the extended position it serves as a conventional rear bumper to help prevent cars and other small vehicles from riding under the rear of the truck, or container loaded on a truck. When the drop down bumper is in the folded position it allows access to the rear portions of the truck, and provides rolling support for the transportable container when the transportable container is being loaded and unloaded. The drop down bumper comprises an impact protection bar, attached loading rollers, and a foldable linkage connecting the impact protection bar with the frame.
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: April 29, 1997
    Inventor: Tom Waldschmitt
  • Patent number: 5599037
    Abstract: A golf bag holder is provided that can be used in addition to standard golf bags or in addition to the use of golf carts. A wide, flat, flared base is provide to a stable, useable vertical holding position for the golfer to place the golf bag holder on a variety of different terrains without worrying about the golf bag tipping over. The golf bag holder is used by placing a standard golf bag in it and securing it with adjustable hook and loop fastener straps. By providing a plurality of useful storage compartments on the exterior of the golf bag holder, the need for access to the storage areas of the golf bag is eliminated. These storage compartments include a scorecard holder, an umbrella holder, a pocket for holding golf tees, a windowed golf ball holder, a cup holder, and a can holder with contacting cooling medium (which allows for chilled beverage cans to accompany the user). Also, retractable wheels and a foldable handle permit the user to easily transport the golf bag holder along a golf course.
    Type: Grant
    Filed: March 17, 1995
    Date of Patent: February 4, 1997
    Inventor: Christian D. Spickler
  • Patent number: 5595393
    Abstract: A car seat/stroller has a rigid tubular telescoping handle assembly and wheel bracket assembly which are fitted thereto in a manner which does not interfere with normal operation of the device as a car safety seat, but rather enhances the seat's safety and convenience. The handle assembly consists of a series of telescoping sections of tubing. Two holes are drilled at a diagonal angle into an infant car seat at respective top corners of the seat's sides, and further through respective flares at armrest portions of the seat. A tubular sleeve is inserted into each hole and is fed through to an underside of the flare. A clamping adjustment device is then affixed to one or both tubular sleeves at an upper portion thereof. Tubular L-shaped upper handle members are inserted into the tubular sleeves.
    Type: Grant
    Filed: August 15, 1994
    Date of Patent: January 21, 1997
    Inventor: James B. Batten
  • Patent number: 5593271
    Abstract: A ground-loading conveyance for refuse or heavy objects. The frame is tipped with the handle to allow a two wheel carriage on pivoting support legs to swing beneath the frame, so as to support the load for transporting.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: January 14, 1997
    Inventor: John R. Hall
  • Patent number: 5496048
    Abstract: A golf cart has a supporting frame formed of articulated struts that can be folded during use and can be unfolded to form storage elements for the golf cart.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: March 5, 1996
    Inventor: Gunter Adam
  • Patent number: 5484154
    Abstract: A retractable wheeled accessory for equipment stands is disclosed as having a collapsible axle tube pivotally attached to two interface members which are removably attached to an equipment stand such as a tripod. Wheels are connected to the axle by way of offset crank members. Pivotal rotation of the axle tube by movement of a level arm causes the wheels to alternately engage and disengage a supporting surface. The invention can accommodate various positions of a tripod by adjusting the track of the wheel via the collapsible axle tube and by permitting the two interface members to pivot independently of the orientation of the axle tube.
    Type: Grant
    Filed: November 18, 1993
    Date of Patent: January 16, 1996
    Inventor: Frank R. Ward
  • Patent number: 5429472
    Abstract: A mechanism for lifting and hauling of a container or the like onto or from a ramp, a tipping body of a lorry and to or from a location which is not easily accessible for heavy haulage vehicles and/or heavy lifting gear includes a hauling arm secured intermediate first and second ends of a shaft and levering arms also attached to the shaft. The shaft is pivotably connected to locking elements adapted to be secured to lower corners of the container at one end thereof. With this arrangement, when the locking elements are secured to the container and the hauling arm is manipulated in order to rotate the shaft relative to the locking elements, the levering arms engage a supporting surface for the container and continued rotation of the shaft causes at least a portion of the container to be lifted from the supporting surface for hauling of the container.
    Type: Grant
    Filed: November 23, 1993
    Date of Patent: July 4, 1995
    Inventor: Harald Dahl
  • Patent number: 5328192
    Abstract: A manually pull-type carrier includes a mobile carriage and a towing handle assembly slidably mounted to the carriage for changing the overall length of the carrier. The mobile carriage includes a pair of longitudinal rails rigidly interconnected and spaced laterally apart by a plurality of fore-and-aft spaced transverse bars, and a pair of wheels or skis with axle assemblies movably supporting the rails and being adjustable for changing the height of the rails above the ground. The towing handle assembly includes a pair of angle side braces and a front U-shaped handle telescopic with the angle side braces for adjusting the height of the handle to fit hunters of differing heights who tow the carriage.
    Type: Grant
    Filed: March 18, 1993
    Date of Patent: July 12, 1994
    Inventor: John R. Thompson
  • Patent number: 5313817
    Abstract: A wheelable cooler includes a cooler body and a pair of wheelgear assemblies. The cooler body is generally boxlike in form, and the wheelgear assemblies include a U-shaped handle, with extension arms extending from a crossbar. The wheelgear assemblies also include fender assemblies, each including a fender body that carries a wheel. A mounting member extends from the fender body at a selected angle, with a handle extension arm is slidably carried in each mounting member. The handle is movable between a retracted position in which the extension arms are inserted into the mounting members, and an extended position in which the extension arms are only partially inserted into the mounting members. Detent assemblies lock the extension arms in the retracted and extended positions. A support rod joins the fender assemblies, extending through each fender assembly and carrying the cooler body.
    Type: Grant
    Filed: May 7, 1993
    Date of Patent: May 24, 1994
    Inventor: Larry L. Meinders
  • Patent number: 5310209
    Abstract: Apparatus for transportation and display of demonstrations and articles of merchandise utilizes a trailer part with undercarriage for facilitating movement from one location to another and is also provided with vertically adjustable castors which can be utilized to lift the carriage clear of a floor or road surface so that the vehicle can be maneuvered on the castors alone. In order to increase the area available for product display while maintaining dimensions more suitable for transport and, at the same time, providing protection for articles being transported, a box like body is provided on or integral with the trailer, the box having open sides covered by box-like covers each cover provided with, when closed, an inward facing open side, the covers each being connected by vertical hinge arrangements to a vertical corner of the body to allow horizontal swing-out-opening, the covers including, within themselves, display spaces which are visible when the covers are opened.
    Type: Grant
    Filed: February 11, 1993
    Date of Patent: May 10, 1994
    Inventor: Peter Holman
  • Patent number: 5249438
    Abstract: A mobile cooler including a compartment having pivotable wheels and a handle assembly for pulling the cooler. A pair of wheel assemblies individually pivot within recesses in the cooler from a raised to a lowered position. In the lowered position the cooler can be transported over smooth or uneven terrain. The handle telescopes partly into the compartment, and partly folds down by a pair of hinges to fit within recesses in the compartment lid. The handle length can be adjusted to suit the user.
    Type: Grant
    Filed: August 20, 1992
    Date of Patent: October 5, 1993
    Assignee: Systemwide Product
    Inventors: Michael A. Rhaney, Randall Bartlett
  • Patent number: 5232232
    Abstract: A heavy object, such as a portable toilet, is supported on a base. At least one wheel is mounted on the base for vertical movement between an upper position in which the wheel is supported above the lower surface of the base and a lower position in which at least a portion of the periphery of the wheel is below the lower surface of the base. The wheel is releasably held in one or the other of those positions. A handle is movably mounted on the object so that the object can be manually swung to permit the wheel to move between those positions.
    Type: Grant
    Filed: July 10, 1991
    Date of Patent: August 3, 1993
    Assignee: Japanic Corporation
    Inventor: Mitsuhiro Kishi
  • Patent number: 5228706
    Abstract: In a container, e.g., a beach cooler, of the type having a pull handle and a pair of retractable wheels the improvement includes a pair of struts (one on either container side) and a pair of strut-positioned wheel assemblies, each mounted for pivoting movement. The U-shaped handle is linearly extensible and retractable and has two arms, each of which includes a cam-like surface. Each such surface bears against a strut for pivoting the wheels between extended and retracted positions, respectively, when the handle is extended or retracted.
    Type: Grant
    Filed: July 21, 1992
    Date of Patent: July 20, 1993
    Inventor: Daniel R. Boville
  • Patent number: 5184477
    Abstract: The portable cart a cooler is made by having a vinyl roller on one of its carry handles. There are two roller handle stops or locks that are in the walls of the cooler body, they are on direct opposite sides from each other. They allow for the locking of the roller handle in position for the carting or towing feature of this invention. The pull or tow handle of the cooler is longer in length than the roller handle to allow user to walk in an upright position and to keep cooler from striking users heels when towing. As stated earlier ordinary portable coolers, ice chests do not have the features of this cart a cooler invention, therefore the cart a cooler could be classified a new and useful improvement over older objects considered to be portable coolers, ice chests.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: February 9, 1993
    Inventors: J. Edward Brown, Jenny Ciaccio
  • Patent number: 5160153
    Abstract: A barrow includes a cart frame having a pair of front wheels rotatably mounted on a front or bottom portion of the frame, and a pair of middle wheels slidably mounted on a middle portion of the frame by a linkage pivotally connecting the frame and the middle wheels, whereby upon an erection of the frame, the middle wheels will be downwardly collapsibly folded; and upon a lay-down of the frame, the middle wheels will be slidably extended for evenly supporting a load carried on the frame in cooperation with the front wheels.
    Type: Grant
    Filed: September 7, 1990
    Date of Patent: November 3, 1992
    Inventor: Vunshik Zan
  • Patent number: 5114164
    Abstract: A suitcase incorporates a foldable handle assembly (22) and wheels (15,16) which are automatically moved into protruding positions when the handle assembly is extended. With the extended handle upright, a major face of the case is substantially horizontal and further cases can be stacked on the case, which serves as a trolley.
    Type: Grant
    Filed: April 13, 1989
    Date of Patent: May 19, 1992
    Inventors: Peter W. Bothwell, Roy Bothwell
  • Patent number: 5096265
    Abstract: A folding hand truck auxiliary wheel structure comprising an U-shaped auxiliary wheel frame adjustably secured to the wheel frame of a folding hand truck by a stop plate and a U-shaped spring wire to hold a pair of auxiliary wheels, wherein the U-shaped auxiliary wheel frame has a plurality of pairs of pin holes symmetrically made on the two linked, elongated rods thereof along longitudinal direction; the stop plate has two curved portions spaced from each other for fastening the two linked, elongated rods of the U-shaped auxiliary wheel frame which have each a pin hole at an inner side.
    Type: Grant
    Filed: June 11, 1991
    Date of Patent: March 17, 1992
    Inventor: Chuan Chang
  • Patent number: 5042827
    Abstract: A two-wheeled hand truck has a vertically inclined upright frame with a load supporting nose at its lower end. The frame is supported on a pair of wheels mounted on an axle by brackets which are pivotally connected to the frame for movement from a first load supporting position adjacent the frame to a rearward second position for supporting higher center of gravity loads. A stair climber structure is pivotal on the axle, and a link structure automatically shifts the position of the rear inclined linear surfaces of the stair climber structure to maintain them in a plane extending tangentially to the peripheries of the wheels when the brackets and wheels are moved.
    Type: Grant
    Filed: November 6, 1989
    Date of Patent: August 27, 1991
    Assignee: Magline Inc.
    Inventor: Carl N. Mortenson
  • Patent number: 5040807
    Abstract: A combined wheelbarrow and beach chair apparatus (10) comprising pivotally attached framework units (11) and (12) having a flexible cargo unit (14) suspended between them and a pivoted wheel assembly unit (13) attached to one of the framework units (11) and provided with members to vary the angular orientation of the wheel assembly unit (13) relative to the framework units (11) (12) and, a removeable support unit (15) which will change the apparatus (10) from a chaise lounge/wheelbarrow configuration to a chair configuration.
    Type: Grant
    Filed: March 15, 1990
    Date of Patent: August 20, 1991
    Inventor: David E. Snover
  • Patent number: 4919442
    Abstract: Leverage lifting cart, utilizeable along two distinct and generally horizontal planes, has a longitudinal cargo receiving bed attached to a pair of laterally extending and preferably wheeled axles including a fixed-elevational rear-axle and a front-axle carried by a vertically controllably movable carriage extending pivotably and medially downwardly from the cargo bed. The vertical distance between the carriage supported front-axle and the cargo bed is remotely controllable by an operator nearby the cargo bed front-end. Specially contoured bridges connect the rear-axle to the front-axle. By virtue of this basic structure, and which can be desireably augmented with other novel structural features, the operator can leverage cargo loads between disparate planes and can safely, reliably, and conveniently maneuver the loaded cargo along the available expanse of one or more planes.
    Type: Grant
    Filed: September 6, 1988
    Date of Patent: April 24, 1990
    Inventor: Thomas F. Green
  • Patent number: 4915402
    Abstract: A case having at least one wheel mounted adjacent the case's floor, that wheel being retractable interiorly of the case into a storage position and extendable exteriorly of the case below the floor where the case can roll on the wheel. One feature is that a retract operator connected to the wheel is manually movable in one of generally parallel and normal directions relative to the floor in order to retract the wheel into the storage position, and a separate extend operator also connected to the wheel is manually movable in the other of the generally parallel and normally directions relative to the floor in order to extend the wheel into the use position. Another feature is that a single spring motor is connected with both the retract and extend operator in order to continually bias both those operators toward one of each operator's first and second operational positions.
    Type: Grant
    Filed: October 19, 1988
    Date of Patent: April 10, 1990
    Assignee: `totes`, Incorporated
    Inventor: Barry Brinker
  • Patent number: 4846493
    Abstract: A portable cooler includes a pair of wheels which are retractable into a pair of recesses in the main body of the cooler. The wheels pivot on frames which are connected by a horizontally-oriented rod, the rod being lockable in hook members in a retracted position and in an operable position. An extendable handle is attached to the forward end of the cooler to pull the cooler along the ground on its wheels.
    Type: Grant
    Filed: October 26, 1987
    Date of Patent: July 11, 1989
    Inventor: Donald W. Mason
  • Patent number: 4762333
    Abstract: A two-wheeled hand truck incorporates an elongate upright frame, mounted by a pair of wheel support brackets to supporting wheels. Handles or other graspable surfaces are provided at the upper end of the frame. The wheel-supporting brackets are pivotally connected to the frame in a manner to permit movement of the wheels from a first load-supporting position in which the wheels are adjacent the lower end of the frame for supporting loads with a relatively lower center of gravity, to a second load-supporting position in which the wheels and axle are moved materially rearward for supporting loads with a relatively higher center of gravity. Yieldable, pressure-exerting mechanism operating through moment arms on opposite sides of the brackets pivots releasably lock the wheel structure in each of its positions.
    Type: Grant
    Filed: January 5, 1987
    Date of Patent: August 9, 1988
    Assignee: Magline, Inc.
    Inventor: Carl N. Mortenson
  • Patent number: 4735424
    Abstract: A utility hand cart is disclosed which is particularly suited for use in lifting and transporting bulky heavy objects, such as automobile transmissions, air conditioner compressors, etc. The cart comprises a lower U-shaped rectangular frame and an elongated inverted U-shaped handle having its lower open ends pivotally attached to each side of the lower frame. Wheels are rotatably mounted on a bracket beneath each side of the handle and move therewith to engage the lower frame member. In use, the cart is wheeled into position and the handle is raised to pivot the front end of the lower frame about the wheel axis to contact the floor surface and the front of the lower frame is slid beneath the object to be lifted. When properly positioned, the handle is raised further causing the wheel to pivot upwardly relative to the lower frame until the lower frame is resting horizontally on the floor. When the handle is released, a spring returns the handle to the lower position and the wheel axle engages the lower frame.
    Type: Grant
    Filed: July 24, 1986
    Date of Patent: April 5, 1988
    Inventor: Richard G. Stelter, III
  • Patent number: 4618157
    Abstract: Manually operated collapsible hand truck for carrying supplies to and from and across beach has wheels independently mounted on raised front tips of skis. Skis are rigidly attached to base of hand cart. Nominally upright frame is pivotably connected to front of cart base. Hand cart frame is locked into position relative to the base by moveable locking pin and entire hand cart may be tilted for rolling across hard pavement.Hand cart frame is temporarily unlocked from base for sliding transport of hand cart upon skis across soft sand.
    Type: Grant
    Filed: August 1, 1985
    Date of Patent: October 21, 1986
    Inventor: Sharon H. Resnick
  • Patent number: 4614349
    Abstract: A combination hand truck and tool for use in installing floor coverings of the glued-down type, such as carpet or linoleum utilizes the weight of the installer's tool box for pressing the floor covering to the floor, in lieu of a weighted roller ordinarily carried by the installer. Retractable wheels and a pivotable, adjustable position handle enable the device to be used as either a press, riding on glides that contact the floor covering, or as a hand truck for carrying the installer's tools and supplies.
    Type: Grant
    Filed: July 13, 1984
    Date of Patent: September 30, 1986
    Inventor: Michael D. Wenzel
  • Patent number: 4541644
    Abstract: A manual utility cart including a frame having spaced cargo retaining portions and a lower portion. An axle journaled in the lower portion of said frame journals a first set of wheels. A second set of wheels is journaled on an axle spaced from and supported by said first axle and is shiftable about the first axle between a retracted position and a frame supporting position to raise the first set of wheels from a surface. A cover overlies both sets of wheels to support a cargo within the frame.
    Type: Grant
    Filed: March 17, 1983
    Date of Patent: September 17, 1985
    Inventor: Henry Diener
  • Patent number: 4420168
    Abstract: A device which is for handling refuse or the like material; which has a container having a bottom surface provided with a pair of intersecting and downwardly open grooves, a pair of wheel recesses disposed at the opposite ends of one groove, and a mounting recess and a latch recess disposed at the opposite ends of the other groove; and which has a dolly having an arm extended through the one groove, elements in the mounting recess mounting the arm on the container for movement of the arm between an upper position and a lower position, an axle mounted on the arm and extended between the wheel recesses, a wheel mounted on the axle at each wheel recess, and a latch mounted on the arm at the latching recess and adapted to latch the arm in the lower position, the wheels being within the wheel recesses when the arm is in the upper position and being extended therefrom for rolling support of the device when the arm is in the lower position and the mounting elements serving resiliently to urge the arm toward the uppe
    Type: Grant
    Filed: June 10, 1982
    Date of Patent: December 13, 1983
    Assignee: Terra Bella Industries
    Inventor: Kenneth M. Dewing
  • Patent number: 4369985
    Abstract: A one man cart for carrying articles of merchandise having a main horizontal frame having auxiliary wheels at the forward end thereof, a pair of rear legs pivoted from the front of said main frame and inclined downwardly and rearwardly, a toggle brace pivoted to the rear of said main frame and inclined downwardly and forwardly and pivoted to said rear legs, front legs pivoted to the front of said frame and extending substantially vertically downwardly. A mechanism is provided to lock and unlock said front legs so that they may be pivoted rearwardly for operations such as moving the cart up and down stairs while holding the cart by an extension of the rear legs at the front of the cart. The toggle braces for the rear legs are pivotal to unlock the rear legs.
    Type: Grant
    Filed: December 24, 1980
    Date of Patent: January 25, 1983
    Assignee: Burt Weil
    Inventors: Elroy E. Bourgraf, Robert E. Dunn, Ronald D. Vance
  • Patent number: 4367880
    Abstract: A detachable wheeled dolly device for separable connection to the base portion and the handle of relatively larger and heavy wheelless power driven handle manipulated machines, whereby a downward push on the handle tilts such machines from out of surface contact and facilitates transport of such machines from one location to another as required.
    Type: Grant
    Filed: May 5, 1980
    Date of Patent: January 11, 1983
    Assignee: Equipment Development Company, Inc.
    Inventor: Edward M. Harding
  • Patent number: 4358123
    Abstract: An attachment for a broom or similar device has a bracket engageable on the broom handle and an axle pivotally mounted on the bracket. The axle carries wheels, castors or the like and a stop is provided to limit the range of pivotal movement so that the axle can be positioned relative to the handle so that the wheels or castors either support said broom on the ground or do not support said broom on the ground.
    Type: Grant
    Filed: May 15, 1979
    Date of Patent: November 9, 1982
    Inventor: Dean E. Richards
  • Patent number: 4297068
    Abstract: A wheeled transporter attachable to a multi-ton cargo container for lifting nd lowering said container, and moving same overland. The transporter includes separate transporter units attachable to each end of the container for building a trailer unit. Each unit is structured to permit high wheel travel for improved operation over rough terrain.
    Type: Grant
    Filed: September 21, 1979
    Date of Patent: October 27, 1981
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Edward Concha, Max Jaffe, Riley Bedford
  • Patent number: 4275896
    Abstract: The present safety mechanism is especially constructed for a carriage insertable into a load space of a vehicle. The safety device prevents the accidental unlocking of wheel supporting, tiltable arms of the carriage. Specifically, the wheel supporting arms must not be able to tilt upwardly unintentionally. For this purpose a security pin or bolt is provided which is capable of reaching behind a shoulder of a locking bolt. The security pin or bolt is connected by a cable to a tiltable lever which supports a roller. When the roller comes to rest on a support, for example, the loading platform, the security pin or bolt is withdrawn from the shoulder arresting position so that only after such withdrawal the locking bolt may be disengaged by actuating a respective grip member at the handle of the carriage.
    Type: Grant
    Filed: May 31, 1979
    Date of Patent: June 30, 1981
    Inventor: Josef Eicher
  • Patent number: 4253680
    Abstract: A hitch for allowing a trailer to be first disconnected from a vehicle, to be then jacked so it is level with the support surface, and then be automatically jacked back to the level of the vehicle so that it can be easily reconnected to the vehicle. A switch is pivotally associated with the trailer for movement in a plane parallel to a vertical plane extending along the longitudinal axis of the trailer. A lock is provided for locking the switch in any one of an infinite number of positions with the longitudinal axis of the switch in the plane parallel to the vertical plane extending along the longitudinal axis of the trailer.
    Type: Grant
    Filed: March 9, 1979
    Date of Patent: March 3, 1981
    Inventors: John M. Albright, Steven G. Goode