Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 7419167 | Sled device A sled device for permitting transportation of a person and cargo over a variety of surfaces includes a sled including a bottom wall and a perimeter wall that extends upwardly from the bottom wall to define a receiving space of the sled to receive the person and car... | 09/02/2008 |
| 7407167 | Roller skate shoe with roller assembly A roller skate shoe has cavities, closing members and roller assemblies. A sole of the shoe is formed with the cavities. Two sides of each cavity are formed with notched slots. The closing member is accommodated in the cavity. The closing member has a closing side f... | 08/05/2008 |
| 7364170 | Wheel ski mount A wheeled cart, such as a shopping cart, has ski elements on the wheels thereof. The ski elements can be moved between stored and use positions. ... | 04/29/2008 |
| 7322581 | Caterpillar type bicycle The present invention provides a caterpillar type bicycle, comprising a bicycle frame, a saddle, a steering handle, and a sprocket pedal power mechanism, as well as a caterpillar type driving structure (A) and a multi-functional switchable front guide mechanism (B),... | 01/29/2008 |
| 7311166 | Snowmobile ski This invention relates to an improved snowmobile ski having a vertical fin on the topside of the ski with a surface area large enough to minimize or prevent sideways slippage of the ski during a turn. The fin, if a single fin is used, is located adjacent the outboar... | 12/25/2007 |
| 7290774 | Wheel unit for ski-mounted vehicle A wheel unit mountable on a ski of a ski-mounted vehicle includes an actuating plate defining a wheel attachment section and a piston attachment section The actuating plate is pivotally attached to the ski intermediate the wheel and piston attachment sections for pi... | 11/06/2007 |
| 7287763 | Method of attachment of a ski on a snowmobile, and resulting snowmobile A method of attachment of a ski to a snowmobile, the snowmobile capable of displacement about a gliding surface. The method comprises the step of providing the snowmobile with at least one steering link defining a push axis. It also comprises the step of providing a... | 10/30/2007 |
| 7226062 | Recreational wheelie vehicle An amusement-type vehicle is provided particularly for doing so-called wheelies having a short wheel base upon a platform-type base with at least two side by side wheels forwardly and one wheel rearwardly upon which wheelies are performed and having a central handle... | 06/05/2007 |
| 7168714 | Lawn and garden implement caddy The lawn and garden implement caddy is useful for storing and transporting various implements, including long handled tools, hand tools and containers, useful in lawn and garden care. The caddy has a wheeled base with a front area having a container platform and a r... | 01/30/2007 |
| 7163209 | Snap-on ski attachment with brake for kick scooter A ski attachment kit for a kick scooter having a scooter steering assembly that includes a front fork configured for attaching a front wheel, a scooter body that includes a stand-on area and a rear fork rearward of the stand-on area configured for attaching a rear w... | 01/16/2007 |
| 7140055 | Lightweight mobile lift-assisted patient transport device A lift-assisted device having a patient support structure, a base, and an undercarriage. The device can be powered by a pneumatic cylinder and a compressed gas source. The undercarriage can be a scissors linkage having at least one first member being slidably connec... | 11/28/2006 |
| 7121560 | Ski assembly for a stroller A ski assembly for a stroller for allowing more proficient movement through snow includes a ski attachment for a stroller assembly having a chair portion, a back portion, a plurality of wheels is attached to the chair portion. The attachment includes a leg having an... | 10/17/2006 |
| 7108270 | All-weather sled A convertible sled for use by a rider. The convertible sled includes a body, a mounting unit coupled to the body for coupling plural wheels or plural sledding members, and a steering unit moveably coupled to the body at the front portion of the body such that, when ... | 09/19/2006 |
| 7055642 | Practical and entertaining recreational vehicle The present invention provides for a practical and entertaining form of recreational transportation, easily transportable to weekend events. It is a compact transport kart (10), designed to carry at least one human passenger. It also transports its passenger ... | 06/06/2006 |
| 7021636 | Convertible coaster/sled with steering/braking handlebar A typically one-rider non-powered sports/recreational vehicle has a main body that can be easily converted between a wheeled coaster-wagon configuration and a snow-sled configuration with runners. Typically there are four wheels or four runners: two at front, steera... | 04/04/2006 |
| 7017939 | Versatile portable cart A multi-purpose, collapsible portable cart, for use in camping, hunting and other outdoors activities carries medical rescue carts, canoes, small boats, game, or hauled cargo by hand. The portable cart can be converted to a various uses and the portable cart can be ... | 03/28/2006 |
| 6983941 | Snap-on ski attachment kit for kick scooter A ski attachment kit for a kick scooter having a scooter steering assembly that includes a front fork configured for attaching a front wheel, a scooter body that includes a stand-on area and a rear fork rearward of the stand-on area configured for attaching a rear w... | 01/10/2006 |
| 6983943 | Convertible ski-supported vehicle Mounting bracket for mounting a wheel unit or other device on the ski of a snowmobile. A base plate of the mounting bracket attaches to the bottom of the ski with the same fastener that fastens a carbide runner to the bottom of the ski. A mounting section has mounti... | 01/10/2006 |
| 6978497 | Motivative exercise and lifting aid dual device A lift device capable of performing an activating motion having a part suspension device for training an upper limb capable of easily and surely performing an upper limb activating motion and easy to handle and use such that it is free to pass over a sill height dif... | 12/27/2005 |
| 6969079 | Multiple-passenger transporter A transporter for transporting a first person and one or more riders over a surface. The transporter includes a first support platform for supporting the first person, the first support platform having left and right sides and defining a fore-aft vertical plane and ... | 11/29/2005 |
| 6932359 | Convertible ski-supported vehicle Universal wheel unit for mounting one or more wheels on the ski of a snowmobile. The wheel unit is a separate assembly that is detachably mountable on the ski or is an integral component of the ski. When retrofitting skis, the wheel unit is mountable on the kingping... | 08/23/2005 |
| 6874807 | Coupling device for a handling trolley A coupling device for a handling trolley comprises a drawbar (22) arranged at the front of the trolley and designed to co-operate with the hook (24) provided at the back of a tractor, in particular a trolley preceding a line of trolleys. The drawbar ( | 04/05/2005 |
| 6854743 | Articulated steering sled A sled having left and right runners pivotably attached to front, center and rear cross members. A central longitudinal member is axially pivotably attached to the front and rear cross members. When rotated, the central longitudinal member moves the central cross me... | 02/15/2005 |
| 6824147 | Convertible ski-supported vehicle Universal wheel unit for mounting one or more wheels on the ski of a snowmobile. The wheel unit is a separate assembly that is detachably mountable on the ski or is an integral component of the ski. When retrofitting skis, the wheel unit is mountable on the kingping... | 11/30/2004 |
| 6761234 | Skid steer vehicle with steerable suspension A skid steer vehicle with steerable suspension has hydraulic motors coupled to four steerable wheels. The wheels are turned by hydraulic actuators and the vehicle is steered either by turning the wheels or by driving the wheels on opposite sides of the vehicle in op... | 07/13/2004 |
| 6708989 | Auxiliary skis The new skis for converting a wheeled push vehicle into a slidable push vehicle have a front anchor on their upper surfaces at a location proximate to the toe end and a rear anchor on their upper surfaces at a location proximate to the heel end. A flexible front har... | 03/23/2004 |
| 6527282 | Convertible ski-supported vehicle Wheel unit to be semi-permanently mounted on the ski of a snowmobile. Wheels are readily deployable or retractable as conditions require. The wheel unit allows the snowmobile to be driven over gravel, dirt, and hardtop surfaces, without losing its ability... | 03/04/2003 |
| 6257599 | Beach tote-sled assembly kit A tote-sled assembly includes spaced runners adapted to slide along malleable and hardened surfaces and having separate parts that are assembled in an end to end relationship and are overlapped by a detachable connector. The tote-sled assembly further inc... | 07/10/2001 |
| 6139029 | Portable utility cart A multipurpose two-wheeled cart whose wheels are removable from the body of the cart to leave a generally planar flat bottom, so that the cart can be used as a sled. Side extensions may be mounted to hold bulky loads. Removable handles are provided at bot... | 10/31/2000 |
| 6126377 | Towing skates Interlocking towing skates for placement beneath the tires of a vehicle prior to winching onto a flatbed. Two or more skates can be locked together in accordance with the tire width of the vehicle to be towed, and the interlocked skates are placed beneath... | 10/03/2000 |
| 6032962 | Isoblader skates A skate assembly that includes a rigid runner plate mounted perpendicularly to the underside of a boot. The runner includes one or more cutouts where wheel or roller assemblies are rotatably mounted. The roller assemblies lowermost tangential edge is alig... | 03/07/2000 |
| 5911422 | Recreational wheeled accessory carrier A wheeled carrier suitable for carrying diverse articles on sandy terrain. The carrier has a body forming an upwardly open principal cargo receptacle, a closed second receptacle, upwardly oriented openings for carrying cups, horizontally disposed tubular ... | 06/15/1999 |
| 5794291 | Ramp A ramp for loading and unloading snowmobiles and other vehicles from a load bed such as a trailer or transport vehicle. The ramp comprises a pair of longitudinal tracks joined by a plurality of transverse members. Such transverse members are adapted to re... | 08/18/1998 |
| 5704624 | Scuba gear cart having multi-transport surfaces An improved cart is provided to transport objects, particularly scuba diving equipment, over different surfaces such as asphalt and sand. The cart includes a two portion housing, one portion of which is constructed as a hull-like member which is removably... | 01/06/1998 |
| 5653494 | Modular sport, work, and travel trailer system A sports trailer system comprised of a first removable module, a second removable module, an integrally molded frame shaped and adapted for the nesting of the first removable module and the second removable module within the frame, and a substantially fla... | 08/05/1997 |
| 5620191 | Multiple purpose sled A sled for moving a plurality of objects, such as beach equipment, over varied terrain having soft and hard surfaces such as sand, mud, snow, concrete, brick, cobblestone and asphalt. Advantageously, the sled is adapted to serve as a table, and is provide... | 04/15/1997 |
| 5439237 | Snowmobile ski wheels The ski supports of a snowmobile are each provided with a plurality of wheel assemblies, with each wheel assembly arranged for pivoting relative to the ski support from a first position elevating the wheels above a top surface of each ski support to a sec... | 08/08/1995 |
| 5427390 | Ski attachment for a wheeled vehicle A ski attachment for operatively mounting onto one wheel of a wheeled vehicle, typically an unpowered wheeled vehicle such as a baby carriage or wagon, is disclosed. The wheel has an annular tire portion and a thinner centrally disposed hub portion. The s... | 06/27/1995 |
| 5413361 | Ski-rail for a wagon A ski-rail is provided for a wagon having a side rail with a lip and four wheels, which consists of an assembly for forming a segmented railing, which is assembled onto and about the lip on the side rail of the wagon, to help keep a child in the wagon whe... | 05/09/1995 |
| 5407217 | Detachable ski assembly for child's pushchair Each of the pair of elongated skis circumscribe a pair of upwardly facing wheel-engaging wells at opposite fore and aft ends thereof, for receiving and containing a pair of fore and aft registering wheels from both axles of a two axle pushchair. A pair of... | 04/18/1995 |
