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| Number | Title | Issue Date |
| 7036832 | Oversized massive break apart dolly An oversized, break apart dolly for picking up and lifting massive articles such as snowmobiles. The dolly stands more than six feet tall. A typical operator of the dolly brings his arms over his head to reach the handle of the dolly, and then uses his weight to dra... | 05/02/2006 |
| 7014203 | Kick stand assembly for a baby stroller A kick stand assembly for a baby stroller includes a first link and a second link respectively connected to a rear post of the baby stroller and a kick stand has one end pivotably connected to the first link and the second link is pivotably connected to a mediate po... | 03/21/2006 |
| 6921095 | Hand trolley with winch operated lifting carriage A hand trolley includes a chassis formed from side frames comprising parallel frame members, wheels and a base platform provided with a load lifting carriage having a lifting surface. The carriage can be raised from a low position on the base platform to an elevated... | 07/26/2005 |
| 6217044 | Steerable and retractable wheels for multi-purpose carriage Wheel assemblies for attachment to a carriage or a vehicle. The wheel assemblies can be configured for four wheel steering, locked in predetermined directions, or free pivoting. The wheel assemblies further include an apparatus for retracting and extendin... | 04/17/2001 |
| 6164398 | Transporting device A transporting device has a frame, wheels arranged on the frame, and a step climbing unit including an electric motor, first eccentric levers driven by the electric motor, second eccentric levers rotatably supported on the first eccentric levers supports ... | 12/26/2000 |
| 5967734 | Four-wheel hand truck with elevator An elevator handtruck having four wheels for allowing loads to be moved like an elevator and raised and lowered out from the raised rear edges of a truck such as a pickup truck, moving van, and the like. Safety straps can attach the handtruck to flanges m... | 10/19/1999 |
| 5829763 | Power assisted lifting device In combination an elevating unit for readily releasable attachment to a hand truck is disclosed. The elevating unit comprises, when in place on the hand truck, a main body portion having a front side and a back side. An extension leg has a foot portion an... | 11/03/1998 |
| 5741169 | Device capable of climbing on top of an obstruction A climbing device includes a hollow housing, a rotary drive unit, and a direction changing gear set having a main drive gear coupled to the drive unit, a transmission gear meshing with the main drive gear, first and second direction changing gears, a driv... | 04/21/1998 |
| 5707200 | Four-wheel hand truck with elevator A four wheel hand truck with elevator in which one pair of wheels are stationary as in a typical hand truck and the other pair of wheels are slidable upon vertical shafts and powered by a cable and winch assembly. A person can place the slidable pair of w... | 01/13/1998 |
| 5447317 | Method for moving a wheelchair over stepped obstacles A lifting apparatus is easily attached to a conventional wheelchair and allows the wheelchair to successfully negotiate stepped obstacles, such as steps and curbs. The apparatus includes two parallel base runners that are extended from beneath the wheelch... | 09/05/1995 |
| 5230522 | Apparatus for moving a wheelchair over stepped obstacles A lifting apparatus is easily attached to a conventional wheelchair and allows the wheelchair to successfully negotiate stepped obstacles, such as steps and curbs. The apparatus includes two parallel base runners that are extended from beneath the wheelch... | 07/27/1993 |
| 5228709 | Wheelchair driving mechanism A wheelchair driving mechanism includes a driving disk fastened to either large wheel of a wheelchair by a circular table and a circular casing for moving the wheelchair with the hand, and a ratchet wheel mechanism for permitting the respective large whee... | 07/20/1993 |
| 5195762 | Hand truck lift A novel hand truck lift is provided comprising an elevating assembly which is extendable downwardly to easily enable the hand truck lift to be used to move objects supported thereon up and down stairs.... | 03/23/1993 |
| 5141240 | Wheeled vehicle including step-traversing arrangment A wheeled vehicle includes a lifting device for lifting the vehicle over a step to be traversed. The lifting device includes a carriage mounted on the vehicle frame for vertical movement with respect thereto, lifting arms carried by the carriage and engag... | 08/25/1992 |
| 4962942 | Minimum energy curb negotiating wheelchair A wheelchair which can negotiate curbs and other obstructions with a minimum of effort by the wheelchair occupant. The wheelchair has conventional front caster wheels and rear propulsion wheels, with first auxiliary support wheels located between the cast... | 10/16/1990 |
| 4960179 | Powered heavy-duty hand truck This hand truck is designed to enable heavy cargo to be easily transported up or down stairs. The truck utilizes a pair of rotatable large wheels with radially and equally spaced apart lobes or projections to engage with steps, so as to prevent an operato... | 10/02/1990 |
| 4618155 | Stair-climbing wheelchair The invention is an apparatus or wheelchair of conventional doorway width capable of negotiating stairways, turning about landings as necessary. The chair includes an outer supporting assembly, preferably the normal transport wheels, and an inner supporti... | 10/21/1986 |
| 4592447 | Movable pedestal scaffold A movable pedestal scaffold having two sets of wheels on the scaffold base to permit the scaffold to be rolled horizontally while the mast of the scaffold is in a vertical position. A transport frame is mounted for vertical movement on the mast, with such... | 06/03/1986 |
| 4570953 | Stair-climbing hand truck A hand truck for powered raising and lower of an extremely heavy load comprises first and second frame members constructed of aluminum and mounted for relative longitudinal reciprocating movement. One of the members has a lip attached thereto for position... | 02/18/1986 |
| 4550924 | Hand-operated cart Hand-operated cart for transporting loads, such as household machines, bags or the like and including a traveling frame with two running wheels and a load-carrying frame with two supporting wheels is provided with a device for adjusting the cart to be mov... | 11/05/1985 |
| 4455029 | Wheel chairs A wheel chair has means for surmounting obstacles, comprising extensible legs 8 with wheels 10 at their feet ends, a link cable or the like mechanical connection actuable by a handle, 18 for lifting the wheelchair, the legs being extensible by pushing the... | 06/19/1984 |
| 4411330 | Stair-climbing apparatus for a wheel chair or similar mobile transport means A stair-climbing apparatus for a wheel chair or the like mobile transport means, which apparatus is provided with an undercarriage, a plurality of pulleys mounted in the undercarriage, at least one endless track extending along a way defined by at least t... | 10/25/1983 |
| 4132423 | Attachments enabling vehicles to negotiate obstacles Attachments are described for enabling small front wheels of wheelchairs to negotiate side-walk curbs or the like. An arcuate rocker end for engaging the curb is fixed to a strut pivoted above the wheel and held in a ready position, determined by engaging... | 01/02/1979 |
| 4057119 | Powered hand truck for climbing steps A hand truck powered by pressurized gas for transporting a load up one or more steps, having a unique mechanical design permitting it to execute a smooth climbing motion up nosed or unnosed steps, and further having a power control system implementing sev... | 11/08/1977 |
