Parallelogram Bars Patents (Class 254/10R)
  • Patent number: 6102369
    Abstract: A jack stand for lifting and supporting a snowmobile which comprises a base frame, preferably on wheels, a front elevating post and two rear elevating posts pivotably attached to the base frame, and a linkage assembly connected to the elevating posts such that the elevating posts all move simultaneously and remain parallel to one another when the elevating posts are pivoted between an elevated position whereat the elevating posts are substantially vertical and a collapsed position whereat the elevating posts are substantially horizontal. The elevating posts each have an outer end constructed and arranged to interface with a portion of the snowmobile. The jack stand also preferably has a latching mechanism that locks the jack stand in its elevated position, and a lever bar selectively attachable to the front post for aiding in moving the jack stand between its collapsed position and its elevated position.
    Type: Grant
    Filed: February 12, 1999
    Date of Patent: August 15, 2000
    Inventor: Dennis Monger
  • Patent number: 6092787
    Abstract: An improved, safe operating, motorcycle lift having protective mechanisms to prevent the accidental release that may cause damage or injury when operating the apparatus. The present invention lifts the motorcycle through the tires of the bike, thereby preventing damage to the undercarriage or exhaust systems. The lift has a novel configuration comprised of two trestle type legs, having four telescoping extendible rods with cylindrical feet at one end. The manually operated hydraulic lift uses a connecting rod to operate synchronously the legs in unison. The legs and connecting rod comprise a novel open-based parallelogram being manually operated by a hydraulic jack. A newly designed latching mechanism prevents the accidental release, which can lower the lift. Protective curtains define the area beneath the lift by being placed around the perimeter of the work area. The 2-wheel vehicle can be clamped by either it's front wheel or by it's rear wheel.
    Type: Grant
    Filed: May 13, 1999
    Date of Patent: July 25, 2000
    Inventor: Alvin A. Nayman
  • Patent number: 6059263
    Abstract: A parallelogram lift in which the deck rails are raised by lifting legs affixed to sliding members that slide within channels in the deck rails. Link arms pivotally connect to the deck rail to each leg, so that the deck rail lifts vertically. A single hydraulic actuator is used to actuate the legs supporting each deck rail, which ensures that the deck rail remains level during the lifting and lowering processes.
    Type: Grant
    Filed: October 29, 1998
    Date of Patent: May 9, 2000
    Assignee: Martin Otema
    Inventors: Martin Otema, Ray A. Walters, Jeffrey A. Stewart
  • Patent number: 6024527
    Abstract: The present invention relates to a cart for shopping in stores, loadable full and effortlessly into a car trunk. The cart includes a basket and a rolling support. The rolling support is placed in the car trunk when disconnected from rolling legs and basket supporting arms. The basket is movable with respect to the support and rotated by rods which form two deformable parallelograms. An electric or crank control transmits the synchronous motion to two reduction units located on either side of the basket. Thus, the basket is effortlessly laid into or extracted from the car trunk, passing the threshold.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: February 15, 2000
    Inventor: Michel Soriano
  • Patent number: 6019565
    Abstract: An apparatus is provided for the longitudinally aligned lifting and manipulation of bulk material containers having apertured or tapered bases, or horizontally oriented ribs, or external peripheral lips on the sides thereof. The apparatus comprises a central frame having a pair of fork like elongate legs extending therefrom, and supporting wheels located at the central frame and at the distal ends of the legs. The legs are spaced sufficiently to straddle the base and simultaneously engage both sides of a container to be lifted, and lifting action achieved by a plurality of power rams which either extend the wheels more downwardly so that the legs and frame of the device are lifted with respect to the ground in con junction with tongues adapted to engage lifting apertures of the container, or by the upward extension of link bars which engage the side walls of a container so that the container is lifted with respect to the legs and frame of the device.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: February 1, 2000
    Inventor: Thomas Gesuale
  • Patent number: 6003841
    Abstract: A snowmobile lift comprising a base frame and a secondary frame is provided. The secondary frame is attached to the base frame by pivot members. The pivot members are used to move the secondary frame between a raised position and a lowered position with respect to the base frame. A handle is rotatably attached to the base frame and at least one raising arm is connected between the handle and the secondary frame. The handle is movable between a first position corresponding to the lowered position of the secondary frame and a second position corresponding to the raised position of the secondary frame. When the handle is moved from its first position to its second position, the raising arms pull said secondary frame into its raised position about the pivot members. A locking bar is provided to secure the secondary frame in the raised position.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: December 21, 1999
    Inventors: Mike Aisenbrey, Beth Aisenbrey
  • Patent number: 5879122
    Abstract: A new container moving vehicle for lifting and moving dumpsters and other similar types of rubbish containers. The inventive device includes a front vehicle portion which is similar to conventional pick-up truck type of vehicles, including a drivers cab, an engine for powering the vehicle, and front wheels. A U-shaped frame is rigidly attached to the rear of the front portion and extends rearwardly therefrom. The frame includes a base end which is secured to the rear of the front portion, and a pair of spaced arms extending from the base end. Each of the arms includes its own wheel assembly for supporting the arms upon the ground, and there is no connection between the wheel assemblies or the arms, such that the U-shape is substantially unobstructed. A U-shaped lift apparatus, having a base end and a pair of spaced arms which are parallel to the arms of the frame, is mounted on the U-shaped frame and is raised or lowered in a vertical direction relative thereto for raising and lowering the container.
    Type: Grant
    Filed: April 29, 1997
    Date of Patent: March 9, 1999
    Inventor: Harry Voelzke
  • Patent number: 5641262
    Abstract: This invention relates to hydraulic lift apparatus in general and to a hydraulically operated vehicular tailgate lift apparatus in particular.
    Type: Grant
    Filed: January 17, 1996
    Date of Patent: June 24, 1997
    Assignee: Woodbine Manufacturing
    Inventors: Norman T. Dunlop, Peter A. Dunlop, David J. Roden
  • Patent number: 5595469
    Abstract: A transporter vehicle comprises two lifting devices which carry respective jacks and which can be joined at their ends by cross bars to form a rectangular dolly with a central opening therein. The lifting devices each have front and rear wheels so that the dolly can be rolled on floor surfaces. In practice, the two are placed on opposite sides of a load seated on a floor in the opening between those devices, the jacks are placed under the load, the cross bars are assembled with the side frames, the load is jacked up on its opposite sides to be above the floor and the load may then be transported.
    Type: Grant
    Filed: December 6, 1994
    Date of Patent: January 21, 1997
    Assignee: Lucent Technologies Inc.
    Inventor: Glen A. Evans
  • Patent number: 5569013
    Abstract: A transporter vehicle comprises two lifting devices which carry respective jacks and which can be joined at their ends by cross bars to form a rectangular dolly with a central opening therein. The lifting devices each have front and rear wheels so that the dolly can be rolled on floor surfaces. In practice, the two are placed on opposite sides of a load seated on a floor in the opening between those devices, the jacks are placed under the load, the cross bars are assembled with the side frames, the load is jacked up on its opposite sides to be above the floor and the load may then be transported. The jacks may include linkages which cause the load to be lifted wholly vertically while not undergoing any horizontal translational movement.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: October 29, 1996
    Assignee: Lucent Technologies Inc.
    Inventors: Glen A. Evans, Ruloff F. Kip, Jr.
  • Patent number: 5449266
    Abstract: A transporter vehicle comprises two lifting devices which carry respective jacks and which can be joined at their ends by cross bars to form a rectangular dolly with a central opening therein. The lifting devices each have front and rear wheels so that the dolly can be rolled on floor surfaces. In practice, the two are placed on opposite sides of a load seated on a floor in the opening between those devices, the jacks are placed under the load, the cross bars are assembled with the side frames, the load is jacked up on its opposite sides to be above the floor and the load may then be transported.
    Type: Grant
    Filed: December 8, 1993
    Date of Patent: September 12, 1995
    Assignee: AT&T Corp.
    Inventor: Glen A. Evans
  • Patent number: 5445489
    Abstract: A transporter vehicle comprises two lifting devices which carry respective jacks and which can be joined at their ends by cross bars to form a rectangular dolly with a central opening therein. The lifting devices each have front and rear wheels so that the dolly can be rolled on floor surfaces. In practice, the two are placed on opposite sides of a load seated on a floor in the opening between those devices, the jacks are placed under the load, the cross bars are assembled with the side frames, the load is jacked up on its opposite sides to be above the floor and the load may then be transported. The jacks may include linkages which cause the load to be lifted wholly vertically while not undergoing any horizontal translational movement.
    Type: Grant
    Filed: October 14, 1994
    Date of Patent: August 29, 1995
    Assignee: AT&T IPM Corp.
    Inventors: Glen A. Evans, Ruloff F. Kip, Jr.
  • Patent number: 5433581
    Abstract: A wheelchair lift with hydraulic power unit and automated folding platform for installation on the floor, inside the opening defining walls of a vehicle to provide for loading and unloading of wheelchair occupants to and from the vehicle. Completely automated, retractable, collapsable folding platform. Hydraulic power unit (10) of the lift and the hydraulic cylinder (28) are totally enclosed, and contained in the power box. The power unit provides power for upward motion of the platform and gravity descent for downward motion of the platform. The platform is pivotally retracted and held in a vertical position in half of the opening space of the vehicle door. The folding motion is accomplished by a folding arm driven against a cam roller which starts the motion of the ball joint linkages inside the platform tubing structure. This initiates a resulting revolving motion of one half section of the platform which folds the platform in a smooth un-interrupted continuous manner.
    Type: Grant
    Filed: January 6, 1994
    Date of Patent: July 18, 1995
    Inventor: Ali J. Farsai
  • Patent number: 5377782
    Abstract: A short-rise lift apparatus is provided which is convertible between a first construction in which a vehicle is lifted directly by a platform that is raised against the body of the vehicle, and a second construction in which a plurality of lift arms are interposed between the platform and the frame of the vehicle so that the vehicle is lifted by the frame when the platform is raised. The plurality of elongated lift arms are retained on the platform and may be translated longitudinally relative to the platform and pivoted about a vertical axis. Each lift arm is removable from the platform so that when the lift arms are removed and the platform is moved toward the raised position, the platform engages the body of the vehicle and lifts it.
    Type: Grant
    Filed: April 2, 1993
    Date of Patent: January 3, 1995
    Assignee: Gray Automotive Products Company
    Inventors: Richard T. Francis, Jerry A. Ohlemeier
  • Patent number: 5199686
    Abstract: An automotive lift system includes a longitudinal series of transverse pairs of left and right rigid lifting legs, neither any legs of said pairs of legs nor any longitudinally successive legs having any on-ground connection therebetween, each of the legs having a top and a bottom, each bottom of each leg having, pivotally secured to it, a planer base which is anchored upon an on-ground floor. The system also includes left and right longitudinal vehicle wheel support platforms, the platforms having a pivotal connection relative to the respective tops of each of the respective pairs of left and right rigid legs.
    Type: Grant
    Filed: January 2, 1992
    Date of Patent: April 6, 1993
    Assignee: Advantage Lift Systems Inc.
    Inventor: Robert H. Fletcher
  • Patent number: 5135346
    Abstract: A maneuverable, wheeled, steerable vehicle is used for transporting helicopters of the type having landing skids. Such helicopters typically have cross bars under the body proper, with downward-curving arms to the skids. The invention includes two mutually parallel booms which extend from the vehicle body parallel and close to the ground. One of the booms is laterally movable toward and away from the other boom, which is fixed to the vehicle frame. In use, the booms are laterally spaced; the vehicle then goes forward to slide the booms under the cross bars of the helicopter body. Lift bars attached to each boom then raise the helicopter up so that the vehicle can transport it. The booms include a gang of small, hydraulically swiveled steering wheels at the ends distal the vehicle. Each lift bar swings upward on double parallel pivot arms at either end of each boom. The pivot axes are horizontal. The arms are of equal length to keep the lift bars horizontal.
    Type: Grant
    Filed: January 31, 1991
    Date of Patent: August 4, 1992
    Inventor: William W. Roach
  • Patent number: 5096159
    Abstract: An automotive lift system includes a number of longitudinal transverse pairs of left and right legs each of which legs, include a top and a bottom. Each bottom is pivotally stationed to a base which in turn is positioned upon a floor. The lift system eliminates the need for torsion bars and provides ease of front-to-back and left-to-right access beneath an automotive vehicle that has been elevated.
    Type: Grant
    Filed: January 18, 1991
    Date of Patent: March 17, 1992
    Assignee: Advantage Lift Systems, Inc.
    Inventor: Robert H. Fletcher
  • Patent number: 4979248
    Abstract: An air suspension bed is disclosed which is structured for installation in a vehicle and comprises a frame which is configured to hold a cushion. Two fluid suspension units include air bag assemblies and an upper housing unit and a lower housing unit with the upper housing unit being connected to the frame by mounting members, connecting members and resilient devices. The mounting members are generally U-shaped members which are fixedly attached to the frame. Connecting members are rod-like structures which pass through apertures formed in the mounting members and the upper housing units and allow the frame to move along the rod-like structures but is restrained in movement by resilient devices carried on the rod-like structures which along with the air bag assemblies cushion the movements of the truck which are transmitted to the frame of the bed.
    Type: Grant
    Filed: July 14, 1989
    Date of Patent: December 25, 1990
    Assignee: John May
    Inventor: Jesse B. Kelley
  • Patent number: 4909700
    Abstract: The lift is installed under the cargo floor proximate to the side door of the van. In the retracted position it is entirely concealed and does not obstruct the normal van usage. Stationary track members are attached to the van. Slidably mounted within the track members are frame members which may be extended or retracted from the van by use of a pair of worm gears. A pair of hydraulic cylinders interconnect the platform and the frame using four links which raise and lower the platform equalangularly. The equalangular motion of the links maintains the platform in a substantially horizontal position as it is lowered from its raised position level with the floor of the van to its lower position with the street or sidewalk.
    Type: Grant
    Filed: February 3, 1989
    Date of Patent: March 20, 1990
    Assignee: Invercan, Inc.
    Inventors: Bruce E. Fontecchio, Adolf Spiegelhalter
  • Patent number: 4902191
    Abstract: A mobile truck for moving containers and other articles comprising a base, supporting standards at opposite sides of the base, a handle pivotally attached at the upper ends of the standards, a lift supporting member pivotally attached to the handle and to a suitable lifter arm, the lifter arm having attached at one end a lifting device and the other end of the lifter arm being pivotally attached to a connecting bar, with the other end of the connecting bar being pivotally attached to the truck base.
    Type: Grant
    Filed: December 9, 1985
    Date of Patent: February 20, 1990
    Assignee: Asarco Incorporated
    Inventors: Joseph B. Cumbest, Johnnie L. Briggs, Francis R. Jones
  • Patent number: 4848732
    Abstract: A pantograph lifting ramp for motor vehicles includes a pair of wheel guides supported by at least two pairs of columns, which are pivoted at their lower ends to two base frames. The columns of at least one pair have their lower ends connected through a torsion bar consisting of connectable sections. The lifting ramp includes a safety valve to prevent uncontrolled descent in case of failure of the hydraulic fluid system, and another safety device to arrest lowering of the lifting ramp if a worker's foot is accidentally placed between the base frame and a column or wheel guide during lowering of the ramp.
    Type: Grant
    Filed: May 17, 1983
    Date of Patent: July 18, 1989
    Inventor: Eride Rossato
  • Patent number: 4685855
    Abstract: The present invention relates to a universal trailer having an outer frame defining the tongue and sides of the trailer with supporting wheels on either side of the outer frame. A load carrying bed is secured to an intermediate or sides of the outer frame by a mounting arrangement which include at least three link members rotatably secured to said frame and rotatably secured to the bed. The link members cause the load bearing bed to move from a position generally within said frame to a generally parallel position below the frame. The trailer also includes a lifting device for raising and lowering the bed within the frame, whereby the bed may be loaded at a position below the frame and subsequently raised to the position within the frame.
    Type: Grant
    Filed: September 12, 1986
    Date of Patent: August 11, 1987
    Inventor: Giuliano Celli
  • Patent number: 4673328
    Abstract: A lift/tilt-bed trailer. Apparatus is described for either raising from or lowering to the ground a trailer bed in a single step while maintaining a substantially horizontal attitude relative thereto, or for tilting the trailer bed which is normally positioned parallel to the ground when the trailer is in its traveling mode for the purpose of loading or unloading the bed without substantial change in the orientation of the trailer "U"-frame in which the bed is located. Four pivotable tracks attached to the frame and corresponding roller wheels attached to the bed cooperate to achieve the desired motion. Since the trailer need not be detached from whatever device is used to move it about when it is to be loaded or unloaded, increased stability results with consequent reduction in risk to the operator.
    Type: Grant
    Filed: June 10, 1985
    Date of Patent: June 16, 1987
    Inventor: J. Michael Shiels
  • Patent number: 4637770
    Abstract: A lifting-type boat trailer which collapses to a substantially flat position to allow the trailer to be driven between the pontoons of a pontoon boat with its pontoons sitting on the ground. A winch fixed to the front of the trailer applies force via a cable both to the front end of the trailer through a pulley attachment and also to the rear end of the trailer through a bell crank mechanism whose effective working lever arm varies from a maximum at the collapsed position of the trailer to a minimum at the fully raised position, whereby lifting forces applied to the trailer are self-equalizing so that the maximum lifting forces are always applied to those points of the trailer which are subjected to the heaviest weight load. The maximum lifting force is automatically transferred from the rear to the front of the trailer as the trailer is raised.
    Type: Grant
    Filed: September 17, 1985
    Date of Patent: January 20, 1987
    Inventor: Robert A. Swadell
  • Patent number: 4536123
    Abstract: The present invention relates to a hand truck apparatus which is designed for transporting large cylindrical objects such as compressed gas storage tanks, for example. The hand truck apparatus includes a main frame assembly supported by a pair of spaced apart ground engaging wheels. A load supporting mechanism is movably mounted on the main frame assembly and includes a securing strap adapted to surround the object and urge the object into secure engagement with the load supporting mechanism. A hydraulic jack unit is provided for moving the load supporting mechanism and the object between a lower position and a selected upper position.
    Type: Grant
    Filed: August 4, 1983
    Date of Patent: August 20, 1985
    Inventor: Wayne E. Snyder
  • Patent number: 4474526
    Abstract: A tractor-drawn lift bed dumper trailer for handling high tonnage loads on pallet frame units in intra-plant or over-the-road operations. The trailer is adapted for use with pallet frame units having a load receiving box, receptacle, or deck superimposed on ground engaging supporting structure and which can be engaged for transport or disengaged for storage without the need for additional equipment or personnel. The trailer lift bed is provided with structure for coupling a pallet frame unit thereto, structure for uncoupling and recoupling certain of the lift bed hinge mechanisms, and an extensible power lift for elevating the forward end of the lift bed to discharge material from the load receptacle.
    Type: Grant
    Filed: October 27, 1981
    Date of Patent: October 2, 1984
    Assignee: Eugene A. Le Boeuf
    Inventor: David E. Gevers
  • Patent number: 4050672
    Abstract: A trapezoidal, open-ended lifting and moving cart having an upper and lower frame pivotably joined together. Upright support members are positioned on the upper frame and locking mechanism and a handle mechanism are connected to the lower frame. The handle mechanism is connected by chains to the upper frame for pulling the upper frame backward and upward, and the locking mechanism is spring-tensioned, actuated by a footpedal, and locks the handle mechanism in an upright position and the upper frame in the elevated position.
    Type: Grant
    Filed: February 4, 1977
    Date of Patent: September 27, 1977
    Inventor: Perry Joe Lane
  • Patent number: 3976212
    Abstract: The present invention refers to a device to place automobile wheels in their respective axles, as well as truck wheels and other vehicles wheels, after the car has been raised with a regular jack.
    Type: Grant
    Filed: June 18, 1973
    Date of Patent: August 24, 1976
    Inventor: Ramon Sanchez