Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 8091903 | Retractable wheel assembly A retractable wheel assembly is provided for coupling to a mounting on an object. The retractable wheel assembly is moveable between one or more extended positions and a retracted position. The retractable wheel assembly is configured to expose a wheel in the extend... | 01/10/2012 |
| 7896366 | Lever-actuated retractable wheel and movable platform using same A retractable wheel assembly includes a wheel frame supporting a wheel, and a pivot bracket assembly secured to the wheel frame. The pivot bracket assembly is displaceable between an extended position and a retracted position. A biasing mechanism is coupled with the... | 03/01/2011 |
| 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 |
| 7427075 | Steering device for pallet truck A steering device for decreasing a turning radius of a pallet jack includes a ground engaging member connected to a support member of the pallet jack between a main wheel and an extensible wheel. The load supporting member of the pallet jack is positionable between ... | 09/23/2008 |
| 7419019 | Power assist apparatus for use with a hospital bed A power-assist apparatus for use with hospital beds has at least one drive wheel interconnected to a frame of the hospital bed so as to be movable between a first position in which the drive wheel is positioned in spaced relationship to an underlying surface and a s... | 09/02/2008 |
| 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 |
| 7340798 | Upright vacuum cleaner with spring loaded nozzle An upright vacuum cleaner includes a nozzle assembly, a canister assembly pivotally mounted to said nozzle assembly, a suction fan and drive motor and a biaser. The biaser has a first end that engages the nozzle assembly and a second end that engages the canister as... | 03/11/2008 |
| 7334449 | Method and device for straightening wheel A method and apparatus for straightening dents and irregularities in wheels including a spindle, a platen mounted on the spindle configured such that the wheel can be mounted on the spindle with the spindle projecting through the central hub hole and at least one ac... | 02/26/2008 |
| 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 |
| 7322586 | Non-powered transportable cart A cart for supporting cargo thereon has wheels at one end and a handle at an opposite end to allow the cart to be transported manually on a ground surface. The cart has an upper bracket and a pair of laterally spaced lower brackets on one of its sides for mounting t... | 01/29/2008 |
| 7322587 | Steerable and liftable independent suspension system A liftable independent suspension system which may also be steerable. In a described embodiment, a liftable suspension system for use on a vehicle includes wheel spindles positioned to extend outwardly at each respective lateral side of the vehicle. The spindles are... | 01/29/2008 |
| 7263991 | Outdoor gas fireplace A portable outdoor fireplace is provided. The portable outdoor fireplace has a housing that supports a gas burner. The outdoor fireplace also has removable side panels to expose the burner. ... | 09/04/2007 |
| 7234982 | Amphibious vehicle suspension A retractable suspension for an amphibious vehicle, the configuration of which allows the size of an opening in the hull necessary for accommodating the protraction of each wheel to be kept to a minimum. The suspension is configured such that the only component that... | 06/26/2007 |
| 7226060 | Steering device for pallet truck A steering device for decreasing a turning radius of a pallet jack includes a ground engaging member connected to a support member of the pallet jack between a main wheel and an extensible wheel. The load supporting member of the pallet jack is positionable between ... | 06/05/2007 |
| 7210590 | Transportation cart primarily for use in an animal barn A transportation cart primarily for transporting deceased animals through the alleyways of a barn has a swivelling mast and boom mounted on the front section of a frame driven by powered wheels with a slide panel attached to the mast below the boom over which the ob... | 05/01/2007 |
| 7191854 | Self propelled gurney and related structure confidential and proprietary document A modular drive unit for a gurney including a control/handle module, a cord reel/charger module, a drive module, and a chassis assembly, plus all needed electrical wiring harnesses and pneumatic tubing to connect them. The modules mount to any existing gurney and to... | 03/20/2007 |
| 7163212 | Portable transportation assembly A portable transportation assembly 10 having a pair of wheels 40, 42 which may be selectively raised and lowered and which is adapted to transport a bathroom assembly 200 in an easy and efficient manner. ... | 01/16/2007 |
| 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 |
| 7152866 | Steerable and liftable independent suspension system A liftable independent suspension system which may also be steerable. In a described embodiment, a liftable suspension system for use on a vehicle includes wheel spindles positioned to extend outwardly at each respective lateral side of the vehicle. The spindles are... | 12/26/2006 |
| 7146683 | Articulated caster An apparatus for supporting an object includes a base assembly and at least three wheels pivotally attached to the base assembly. A pivot arm includes a flange plate at an upper end for attachment to the object. An opposite lower end of the pivot arm includes a univ... | 12/12/2006 |
| 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 |
| 7077406 | Pedal-controlled movable bottom frame A pedal-controlled movable bottom frame includes a frame body, two movable connecting rods and a position rod. The frame body and the movable connecting rods are respectively provided with two casters and have their ends respectively assembled with four support legs... | 07/18/2006 |
| 7062805 | Pedal control of brake and auxiliary wheel deployment via side and end articulation A wheeled carriage for supporting a patient includes a patient support with head and foot ends and a wheeled base supported by castered wheels. Auxiliary wheels secured to an auxiliary wheel support structure are suspendedly mounted to the wheeled base. A control ap... | 06/20/2006 |
| 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 |
| 6997466 | Mobile base A mobile base includes a main body having a first side formed with two first foot portions and a second side formed with two second foot portions, two fixing rollers each mounted on a respective first foot portion, an adjusting plate mounted between the second foot ... | 02/14/2006 |
| 6971656 | Movable bottom frame A movable bottom frame includes a frame body, two movable connecting rods and a locking rod. The frame body and the movable connecting rods are respectively provided with two casters and have their ends respectively and pivotally assembled with four support legs of ... | 12/06/2005 |
| 6955364 | Steering or lifting mechanism The invention provides a mechanism suitable for lifting an appliance, particularly a domestic appliance. The mechanism (2) comprises a generally cylindrical body (8) having a wall (50) and a longitudinal axis (16) which extends in an upwa... | 10/18/2005 |
| 6938301 | Bed frame A bed frame includes a base frame, an articulated support decks, an intermediate frame positioned between the base frame and the articulated support deck, and an auto-contour mechanism. The articulated support deck includes head, seat and foot deck portions. When en... | 09/06/2005 |
| 6935656 | Combination hitch-mountable utility cart A receiver hitch-mountable utility cart has a support frame for supporting a payload, a hitch arm rigidly attached to the support frame, the hitch arm shaped to engage a receiver hitch bar of an over-the-road vehicle, a wheelbase assembly with wheels for transportin... | 08/30/2005 |
| 6916257 | Portable basketball goal system A portable basketball goal system having an adjustable wheel assembly is disclosed. The portable basketball goal system may comprise a rigid pole, a support base, an adjustable wheel assembly, and an engaging member. The support base is configured to maintain the ri... | 07/12/2005 |
| 6904641 | Adjustable eccentric axle caster assembly for pallet truck An adjustable eccentric axle caster assembly for a pallet truck is provided. The adjustable caster assembly includes an eccentric axle, a caster wheel mounted on the eccentric axle, and a fastener for securing the eccentric axle to provide a desired caster wheel pos... | 06/14/2005 |
| 6901783 | Device having pivotable wheel mechanism The subject invention provides a sheet bending brake assembly for securing a work piece. The sheet bending brake assembly includes a clamping member having a lower leg extending therefrom and a pivoting arm pivotally supported by and extending from the clamping memb... | 06/07/2005 |
| 6886837 | Hydraulic suspension strut for an amphibious vehicle A hydraulic suspension strut (30) has a first on-off valve (58) connecting the first and second chambers (42 and 44), and a second on-off valve (62) connected to chamber (42) only. Suspension arm (3) of wheel (1 | 05/03/2005 |
| 6814361 | Golf bag A golf bag includes a body, a seat, a glide device and a brake-device. The body is affixed to the seat and the seat includes a slot, a plate-channel and a cavity. There is a plurality of ditches on two sides of the seat. Nearby the ditches, there is a shaft-channel ... | 11/09/2004 |
| 6792630 | Fifth wheel assembly for bed A wheeled carriage for supporting a patient includes a patient support with head and foot ends and a wheeled base supported by castered wheels. An auxiliary wheel assembly is secured to the wheeled base and includes a rotatable support shaft with an axis and a drive... | 09/21/2004 |
| 6749205 | Vehicle with adjustable height wheel and fender therefor 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. Each wheel ha... | 06/15/2004 |
| 6666464 | Containment cart for solvent recovery system The containment cart has a floor, two side walls, and a rear wall between the side walls. Wheels are mounted to the floor, allowing the containment cart to be readily transportable and insertable into a drum cavity of a solvent recovery device. Caster whe... | 12/23/2003 |
| 6604734 | Method of retaining an air suspension A method of retaining a suspension system includes creating a negative pressure within an air spring such that a longitudinal member is retained in a substantially fixed position relative to a chassis component when the longitudinal member is placed in an... | 08/12/2003 |
| 6575491 | Versatile cart for transporting packages to a vehicle Described is a collapsible cart for transporting items from a first surface to a raised surface. The collapsible cart comprises a platform, for carrying items thereon, wherein the platform comprises a front edge and a back edge. A collapsible front leg is... | 06/10/2003 |
| 6561527 | Hybrid golf bag technology A hybrid golf bag, includes a conventional golf bag body with an open top and a closed bottom, a wheel mount attached to the bottom, at least two wheels rotatably connected to the wheel mount, and handle means attached to the golf bag body. The handle mea... | 05/13/2003 |
