Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 7686311 | Systems, methods and apparatus of wheels for lateral motion of mobile C-arm X-ray devices Systems, methods and apparatus are provided through which in some embodiments a lateral motion of an imaging device is provided by at least one friction reduction device that provides motion in a direction that is lateral to main wheels of the imaging device. ... | 03/30/2010 |
| 7547025 | Assembly and method for lowering and raising a transport trailer bed for loading and unloading a trailer A method and apparatus for lowering and raising the floor bed of a transport trailer to facilitate loading and unloading, the transport trailer having at least one pair of wheels mounted on a swing arm, the swing arm connected to a transverse axle, the transverse ax... | 06/16/2009 |
| 7426970 | Articulated wheel assemblies and vehicles therewith The disclosed articulated wheel assemblies and associated vehicles, for example wheelchairs, include articulated wheel assemblies with at least one offset connecting arm rotatably attached at one end to a payload platform, for example a seat, and attached at the oth... | 09/23/2008 |
| 7398981 | Auxiliary axle system for concrete pump truck A concrete pumping truck having a forward end and a rear end with a hopper attached at the rear end of the concrete pumping truck comprises an auxiliary axle system pivotally attached to the rear end of the truck adjacent the hopper, the auxiliary axle system compri... | 07/15/2008 |
| 7329161 | Amphibious recreation vehicle An amphibious passenger vehicle having several open or covered holes and a surrounding cover to accommodate fishing and hunting. An aft mounted engine, forward/reverse transmission, drive linkage and disk/caliper brake assembly controls a pair of rear wheels. Electr... | 02/12/2008 |
| 7311568 | Amphibious vehicle An amphibious vehicle wheel suspension includes upper and lower linkages, a road suspension device and a retraction device for moving the wheel between a protracted position for road use, and a retracted position for marine use. Suspension device can be operatively ... | 12/25/2007 |
| 7303201 | Air suspension system for a vehicle A height control valve linkage assembly for an air suspension system, including an air bag and a height control valve controlling the supply of air to the air bag. A telescopic linkage is positioned between the arm of the height control valve and the suspension. The... | 12/04/2007 |
| 7299897 | Hydraulic platform lift incorporating positive displacement valve, and positive displacement valve for hydraulic platform lift A hydraulic platform lift, having hydraulic pump means and first and second hydraulic cylinders each having a piston member therein, each operatively coupled to a respective side edge of a platform to permit raising and lowering of the platform. A positive displacem... | 11/27/2007 |
| 7240911 | System for controlling distribution of fluid to a system of air bags for use with vehicular trailers A valve system controls which air bags on a tractor trailer are in fluid communication with a pressurized air supply source. If one of the air bags develops a leak, an air bag may be taken out of fluid communication with the remaining air bags and pressurized air so... | 07/10/2007 |
| 7234720 | Apparatus for supporting and transporting a bleacher A trailer apparatus is for use with a portable bleacher of the type having a lower framework supporting and interconnecting a plurality of generally parallel longitudinally extending bleacher seat assemblies. The framework includes longitudinally spaced laterally ex... | 06/26/2007 |
| 7228594 | Fluid levitating caster integrating load lifting device A fluid levitating caster lifts a heavy load “(17)” off a floor “(18)” with near friction-less-ness for transport has integrated a load lifting device. This extra rise height “(ER)” lifting feature accommodates moving loads “(17)... | 06/12/2007 |
| 7216605 | Animal management system An animal management system provides an alley to control the handling of animals when procedures are to be performed on the animals by veterinarians or cattle producers. The alley is formed by a base frame, and included therewith are a headgate and preferably two we... | 05/15/2007 |
| 7216876 | Occupant-propelled fluid powered rotary device, truck, wheeled platform, or vehicle A device for generating rotational energy for hydraulic fluids, which includes at least one hydraulic cylinder, the at least one hydraulic cylinder comprising at least two chambers, wherein each of the at least two chambers are in fluid communication with the other.... | 05/15/2007 |
| 7153080 | Hydraulic level-loading and dumping trailer A trailer, having the capability of lowering its deck to the ground surface for ease of loading and unloading from the ground; raising its deck to a loading dock height for ease of loading and unloading from a loading dock or other elevated surface; and tilting its ... | 12/26/2006 |
| 7144069 | Vehicle, in particular camper, with a hydraulically actuated roof part A hydraulic actuating device for a roof part which is moveable between a closed position and an open position of a vehicle has a first hydraulic actuator and a second hydraulic actuator, which first and second actuators are designed to drive the moveable roof part i... | 12/05/2006 |
| 7140501 | Hat and uniform caddy A hat-and-uniform caddy that has hat space for protective hat storage and transportation in predetermined proportion to uniform space for protective uniform storage and transportation. The hat-and-uniform caddy includes swivel casters and optional center wheels for ... | 11/28/2006 |
| 7112029 | Carrier apparatus and method A carrier apparatus and method includes a pair of oppositely positioned carriers. At least one pair of steerable wheels is connected to at least one of the oppositely positioned carriers. A movable neck is connected to each of the oppositely positioned carriers and ... | 09/26/2006 |
| 7104554 | Devices and methods for servicing vehicles having tires Devices and methods for servicing vehicles having tires are provided. One aspect disclosed is a device having a fork for inserting under the tire, the fork having a first working end and a second end; a handle having a first end mounted to the second end of the fork... | 09/12/2006 |
| 7074003 | Helicopter moving device A helicopter moving device has a lever arm, a helicopter support arm to attach to a helicopter, and a wheel mounted to the lever arm, such that applying downward pressure to the lever arm causes a corresponding upward movement of the helicopter support arm about a p... | 07/11/2006 |
| 7063497 | Drive over conveyor pit assembly A drive over conveyor pit assembly includes a mainframe including a grain pit located between and adjacent a plurality of drive over sections. Attached to the mainframe are a plurality of entrance ramps and a pair of exit ramps. Each ramp is pivotably attached to an... | 06/20/2006 |
| 7044704 | Portable load lifting bed The invention relates to a portable load lifting bed including a base frame and a bed frame moveably mounted for movement between an upper position and a lower position. A plurality of guides connect the bed to the base frame and at least one actuator provides force... | 05/16/2006 |
| 7036604 | Structure for converting an integral implement to a drawn type A forward acting wheel arm for a drawn hitch includes a pivot point directly below the rear rank of the machine frame, and the wheels are rotated directly in front of the front rank during field operation. For transport, the wheels rotate below the front rank to min... | 05/02/2006 |
| 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 |
| 7004483 | Cart for large slabs The Invention is a cart for moving slabs of stone, such as marble and granite. In a first embodiment, main wheel support the weight of the slabs while front and rear end wheel prevent tipping of the cart. A hydraulic system withdraws the wheels, rendering the cart s... | 02/28/2006 |
| 6922992 | Hydraulic drive circuit with flow divider and bypass valve A hydraulic drive with a flow divider and a bypass wherein fluid can either be allowed to flow from a flow divider to hydraulic actuators in parallel or the fluid can be allowed to bypass the flow divider and flow directly to the hydraulic actuators in parallel.... | 08/02/2005 |
| 6917755 | Substrate support An apparatus for supporting a substrate is described that has a ball adapted to minimize damage between the substrate support and the substrate supported thereon. In one embodiment, an apparatus for supporting a substrate includes ball disposed on an inclined ball s... | 07/12/2005 |
| 6857643 | Elevating trailer apparatus An elevating trailer for moving between a low, cargo-loading position and an elevated, cargo-transporting position. The frame of the trailer has opposing sides, each side carrying a pair of tandem wheels. An inflatable air bag is mounted on a supporting and pivotal ... | 02/22/2005 |
| 6772850 | Power assisted wheeled carriage A power assisted wheeled carriage includes a patient support having a length, a wheeled base supporting the patient support, and an auxiliary wheel mechanism including an auxiliary wheel spring support for biasing an auxiliary wheel into contact with a floor. The ca... | 08/10/2004 |
| 6575487 | Boat launching/retrieval/transport apparatus and method A transport apparatus to launch a boat into the water and retrieve the boat from the water. There is an elongate main frame having forward and rear main frame sections pivotally connected to one another along a transverse axis at approximately a mid locat... | 06/10/2003 |
| 6474672 | Adjustable vehicle with moving section for load transfer A vehicle arranged for raising and lowering the frame relative to the ground wheels for loading comprises a vehicle frame with a hitch at a forward end of the frame and at least two ground wheels for supporting the frame for movement across the ground. Ea... | 11/05/2002 |
| 6409186 | Mobile cart The present invention pertains to a mobile cart. In a specific embodiment, the subject cart can be automatically loaded onto and from a raised platform. In a specific embodiment, the subject cart can be utilized as a catering cart for transporting and ser... | 06/25/2002 |
| 6405393 | Height and angle adjustable bed having a rolling base A height and angle adjustable bed having a rolling base which utilizes a unique pivoting base having castors and a unique support arm assist spring mechanism. The pivoting castor base allows movement of the bed in any direction on the plane of the floor w... | 06/18/2002 |
| 6315311 | Self-stowing wheeled support structure A wheeled support structure reversibly deployable from a stowed condition on the bed of a trailer to aid in rolling support of a load thereupon is provided. The support structure includes a frame, pivotable through a range of motion exceeding 90 degrees a... | 11/13/2001 |
| 6260646 | Power-assisted pallet truck A pallet truck for manually transporting loaded pallets is provided with a momentary locomotion means that assists an operator in starting a load moving from a state of rest. The locomotion subsystem is of suitable weight and size to allow the power-assis... | 07/17/2001 |
| 6203263 | Transport cradle for a skid-supported helicopter A transport cradle for a skid-supported helicopter having a pair of laterally spaced and generally parallel support skids. The transport cradle has a main frame (10) supported by transport wheels (16) and a pair of laterally spaced elongate supports (11) ... | 03/20/2001 |
| 6135700 | Transport vehicle deck lowering mechanism A transport vehicle with a cargo deck having a deck lowering mechanism to enable easy loading of cargo, such as a motorized vehicle. The vehicle has a tandem wheel set located on each side thereof. The wheels are rotatably attached to the outer ends of sp... | 10/24/2000 |
| 6089604 | Wheeled chassis A wheeled chassis including at least one traction bar pivotable about a horizontal axis between a substantially vertical position and a substantially horizontal, towing position, and two spaced from each other axle elements for supporting each pair of fre... | 07/18/2000 |
| 6019565 | Container lifting and transport apparatus 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 cent... | 02/01/2000 |
| 5984340 | Trailer A vehicle arranged for raising and lowering the frame relative to the ground wheels for loading comprises a vehicle frame with a hitch at a forward end of the frame and at least two ground wheels for supporting the frame for movement across the ground. Ea... | 11/16/1999 |
| 5915705 | Lift mechanism for vehicle suspensions A suspension system which includes at least one beam, a support spring extending between the vehicle frame and the support beam and a lift spring extending between a lift bracket welded to the beam and the vehicle frame. The support spring is precompresse... | 06/29/1999 |
