Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7267071 | Apparatuses and methods useful for centering watercraft Apparatuses and methods useful for helping to center watercraft—such as personal watercraft, ski boats, fishing boats, luxury boats, and the like—as they are docked (such as on trailers or watercraft-lifting systems), especially in rough waters and/or strong cro... | 09/11/2007 |
| 7231882 | Support assembly for loading and securing a tender A support assembly for loading and securing a tender including first and second subassemblies. The first assembly includes a winch assembly for positioning the tender on the support assembly and the second subassembly includes a releasable securing device. Both suba... | 06/19/2007 |
| 7153059 | Boat ramp improvements The new boat ramp has a ladder-style frame having C-shaped elongated lateral side rails held in spaced apart parallel condition by C-shaped cross support beams. One end of the frame is a water end and the other end is a shore end. At least six hull roller assemblies... | 12/26/2006 |
| 7092779 | Automated material handling system for a manufacturing facility divided into separate fabrication areas An automated material handling system is presented for a manufacturing facility divided into separate fabrication areas. The automated material handling system plans and carries out the movement of work pieces between fabrication areas and maintains a database indic... | 08/15/2006 |
| 7055879 | Motor vehicle with a cargo space and cargo space door A motor vehicle, especially a passenger utility vehicle, e.g., a station wagon or SUV with a cargo space (3) which is located in the rear (2) of the vehicle, a cargo floor (16) which can be extended rearward, a cargo space door (44) for o... | 06/06/2006 |
| 7055449 | Apparatuses and methods useful for centering watercraft Apparatuses and methods useful for helping to center watercraft—such as personal watercraft, ski boats, fishing boats, luxury boats, and the like—as they are docked (such as on trailers or watercraft-lifting systems), especially in rough waters and/or strong cro... | 06/06/2006 |
| 6964540 | Variably adjustable watercraft ramp The watercraft ramp comprises a frame and a plurality of hull-support assemblies mounted thereon. The frame has a pair of elongated channel rails held in laterally spaced condition. Each rail has a longitudinally aligned internal recess and a longitudinally aligned ... | 11/15/2005 |
| 5984615 | Roller drive unit A roller drive unit with a roller, a motor to drive the roller, a drive shaft coupled to the motor, and a gear system to couple the roller to the drive shaft. The gear system has a drive gear coupled in a non-rotating manner to the drive shaft, and a driv... | 11/16/1999 |
| 5846043 | Cart and caddie system for storing and delivering water bottles A cart and caddie system for storing and transporting standard, multi-gallon water bottles, and for inverting each bottle so that its neck is received in an open well at the top of a water dispenser to feed water therein. The wheeled cart includes a lower... | 12/08/1998 |
| 5738199 | Diverter roller assembly for loading and unloading cargo in a vehicle A roller assembly is removably mounted on the floor of a vehicle. The assembly has a floor unit which is mounted on the vehicle floor and an erectable unit pivotally supported on the floor unit. This assembly has a retracted configuration in which the ere... | 04/14/1998 |
| 5636902 | Attachable self-dumping bin for a pick-up truck An attachable dumping device is presented which allows for dumping rock, sand, or other materials from a pick-up truck. The device has three main parts, a bin which is attached to a bin frame which in turn is attached to a bottom frame. The bottom frame i... | 06/10/1997 |
| 5360226 | Grab and center guide system for boat loading The Grab and Center Boat Loading System is a centering guide system which helps one person load a boat on a boat trailer with no other person assisting. The system consists of two side mounted, spring loaded, rotating guides and one front mounted fixed st... | 11/01/1994 |
| 5316329 | Sliding boat trailer roller mount A sliding boat trailer roller mount is used when loading or unloading a boat from a boat trailer. The roller mount includes a mounting arm with an arch, a saddle with a curved groove in which the mounting arm rocks and slides, and a roller at each end of ... | 05/31/1994 |
| 5299903 | Retrieval guide for boat trailers A pivoting keel guide for boat trailers which can be used with most boats, can be easily field added to existing trailers, and which will provide excellent centering action for crosswinds when the trailer is submerged. A base plate attaches to a cross-mem... | 04/05/1994 |
| 5158315 | Bunk supporting assembly for boat trailers In a boat trailer having a frame including a crossbar, and a pair of bunks for supporting a boat thereon, a support assembly for vertically adjustably supporting the bunks on the crossbar including a post unit connected to the crossbar, a bracket unit con... | 10/27/1992 |
| 5152657 | Boat trailer attachment An attachment for use with a boat trailer previously equipped with an upstanding post secured to a trailer tongue, and a winch with a rope mounted near the upper end of said post. The attachment includes a third class lever pivotally connected at the forw... | 10/06/1992 |
| 5152656 | Dual-purpose trailer A trailer for carrying a small boat and simultaneously carrying one end of a small automobile, so that the boat and automobile can be towed behind a motor home or other large motor vehicle without the combination of vehicles being so long as to be unduly ... | 10/06/1992 |
| 5133571 | Hydraulic-roller boat trailer A boat trailer is described which combines the advantages of previously available hydraulic and roller-type trailer constructions. In a preferred embodiment of the invention, the trailer bed is of a U-frame construction, with a plurality of side rollers a... | 07/28/1992 |
| 5082417 | Accessory for a vehicle having a hydraulic loader The difficulty in loading a load carrying body (26) onto or removing it from an elevated surface (48) with a standard hydraulic loader arm (30) is avoided through the use of a lifting frame (70) adapted to be mounted to the bed (20) or frame (10) of a veh... | 01/21/1992 |
| 5024312 | Boat support roller assembly A roller assembly for supporting a boat on a trailer which has a hub with a resilient surface, and wherein the hub rotates on a cat's eye-shaped bushing which allows limited swivel and acts as a positive guide to the boat hull for providing straight line ... | 06/18/1991 |
| 5007791 | ISO container handling system There is described a load handling device for a vehicle which enables the vehicle to pick up and set down standard ISO containers. The device has a mast pivotally mounted at one end adjacent the rear of the vehicle for movement about a horizontal axis, an... | 04/16/1991 |
| 5002299 | Glide trailer A glide system for boat trailers provides ease of loading and launching in an economical manner. The glide system comprises a plurality of glides for supporting a boat hull. Each glide comprises a support member made of a relatively soft and low-friction ... | 03/26/1991 |
| 4997332 | Modular sailboat trailer A boat trailer which is characterized by laterally spaced longitudinally extending booms or side frame members and cross members which are supported from the side frame members at their ends on axially aligned pivots. The cross members laterally space the... | 03/05/1991 |
| 4979536 | Portable truck tire washing apparatus A portable tire washing apparatus is mounted on a towable trailer bed or on a platform and has drivable rollers for rotating truck tires while they are sprayed by jets of water. Additional roller assemblies or bumpers are provided to prevent sideway movem... | 12/25/1990 |
| 4955778 | Boat trailer pivotal roller keel support assembly A boat trailer having a pair of laterally spaced frame members, a cross member unit disposed between the frame members, a keel support assembly mounted on the cross member unit intermediate thereof and including a first bracket unit with one portion pivot... | 09/11/1990 |
| 4902189 | Gathering and guiding arrangement for the loading and unloading of containers or platforms onto vehicles A vehicle for carrying a container or platform has a lifting mechanism for loading the container or platform onto the vehicle. There are roller devices (10,12) rotatable about a substantially horizontal axis and located at the rear of the vehicle. A gathe... | 02/20/1990 |
| 4900051 | Boat trailer frame assembly A trailer for hauling a boat having a wheel and axle supported frame including a pair of frame members extended rearwardly from a tongue connection in a laterally spaced relationship, a cross member assembly supported on upper surfaces of the frame member... | 02/13/1990 |
| 4893828 | Boat trailer roller bunk apparatus A boat trailer having a frame, a wheel and axle unit supporting the frame, a front keel and hull supporting unit mounted on the frame, and a rear cross member, a roller bunk apparatus having a pair of identical roller bunk units each mounted on a side of ... | 01/16/1990 |
| 4875700 | Boat trailers A boat trailer frame has front cross rails spanning the parallel portions of longitudinal rails with forwardly convergent front ends. The cross rails carry sets of boat hull-engaging members arranged to conform to the shape of the hulls of boats to be tra... | 10/24/1989 |
| 4875701 | Boat trailer hull and keel supporting assembly A boat trailer having a frame, a wheel unit supporting the frame, a rear cross member between elements of the frame for supporting a plurality of roller units, and a front cross member between other elements of the frame for supporting a hull supporting u... | 10/24/1989 |
| 4858943 | Boat trailer A boat trailer having a frame with a forwardly extending tongue and a paddle cradle for a boat hull has a pair of longitudinally disposed arms pivotally hinged forwardly to each side element of the frame. Each independently pivoted arm includes a float at... | 08/22/1989 |
| 4820111 | Boat trailer with pivotal keel and hull supports A boat trailer having a frame, wheel unit, an adjustably mounted winch unit including a keel engaging member, an elongated second keel engaging member pivotally mounted on the frame rearwardly of the winch unit and self-centering to engage a longitudinal ... | 04/11/1989 |
| 4781515 | Roller mounting system for boat trailer There is provided a pivotally mounted hull-engaging roller system for a roller trailer for facilitating loading and unloading a boat and assuring efficient support of a boat loaded thereon. The pivotal mounting permits the hull contacting elements or roll... | 11/01/1988 |
| 4765794 | True line boat loader This boat loader is designed to aid in the loading of a boat on a trailer. Primarily, it consists of a second frame mounted to a trailer frame, and the second frame includes a hydraulic unit to elevate one end, which is necessary for controlled height whe... | 08/23/1988 |
| 4755097 | Device for the handling and transfer of a load on a vehicle such as a container or a tray A device for handling a container on a vehicle to permit the container to be tipped about an axis at the rear of the vehicle or to be loaded or unloaded. The device has a reciprocable frame which carries the tipping axis and is caused to reciprocate along... | 07/05/1988 |
| 4717165 | Boat trailer A boat trailer having the parallel boat supporting portions of the trailer frame free of any fixed cross frame members rigidly connected to the trailer side booms. The parallel spacing between this portion of the trailer frame is effected by a downwardly ... | 01/05/1988 |
| 4684145 | Boat guide A boat guide for use in loading a boat from a body of water onto a trailer. There is one upright post on each side of the boat trailer near the rear end thereof each of which is of sufficient height to extend above the water when loading the boat. A cross... | 08/04/1987 |
| 4647110 | Unitary cargo bin and track assembly A cargo retaining and dumping device for mounting to a load-bearing platform is disclosed, comprising a cargo bin slidably mounted through a retaining guide connection to a track which is bifurcated in the lengthwise direction, the rearmost portion of whi... | 03/03/1987 |
| 4620716 | Boat guide roller assembly A boat trailer having a pair of spaced guide roller assemblies between which the bow of a boat is located upon boat retrieval. Each guide roller assembly comprises a base member secured to the trailer chassis, a post which can pivot in a generally fore-an... | 11/04/1986 |
| 4592694 | Modular boat trailer A boat trailer which is characterized by laterally spaced longitudinally extending booms or side frame members and cross members which are supported from the side frame members at their ends on axially aligned pivots. The cross members laterally space the... | 06/03/1986 |
