Bizarre Patents
An armor with rollers is provided that enables a user to move in all positions by rolling on a hard and smooth surface while constantly varying his bearing points on the ground.
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| Number | Title | Issue Date |
| 7980337 | Stair climbing device The present invention provides a device for safely and conveniently conveying an object on a slope. The safety feature includes a fail-safe one-way brake comprising a ratchet wheel, a pawl and a biasing means. In one embodiment, the device is foldable; in another em... | 07/19/2011 |
| 7434644 | Powered snowboard A powered snowboard having a drive assembly mounted thereon, the drive assembly including a frame, a track assembly having a track suspended over multiple wheels, the track assembly being supported in the frame such that it is able to travel in a vertical direction ... | 10/14/2008 |
| 7347426 | Stair-climbing wheelchair carrier An extension/retraction cylinder stops or starts tilting the platform of the stair-climbing wheelchair carrier based on a detection signal from an inclination sensor provided in the crawler drive unit. When the crawler drive unit is detected to be not tilted, the ti... | 03/25/2008 |
| 7347100 | Force detection device A force detection device of the present invention includes a handle to be given an operation force by an operator, disposed on a support reciprocatably in a first axis direction along a forward/backward direction of the truck and a second axis direction orthogonal t... | 03/25/2008 |
| 7316165 | Force detection device A force detection device of the present invention is for detecting an operation force of an operator applied in a uniaxial direction, and includes a force receiving part for receiving the operation force, a force detection part placed on a support for detecting the ... | 01/08/2008 |
| 7213663 | Driving device for robot cleaner A driving device of a robot cleaner with a shock-absorbing unit. The driving device includes a robot cleaner body and a pair of motors disposed in the robot cleaner body which are driven by respective power supplies. The driving device also includes a pair of drivin... | 05/08/2007 |
| 7210750 | Crawler belt link grinding system and crawler structure Vibration or the like is prevented for long-term use by normalizing, with operation continuing, a tread of a crawler belt link through grinding in an early stage where uneven wear such as corrugated wear occurs. With a crawler belt of a crawler vehicle wound, an abr... | 05/01/2007 |
| 7163213 | Powered hand truck A powered hand truck for assisting in the movement of objects. The powered hand truck includes an electric motor, a power source, a programable motor controller, and a transaxle, which are adaptable to existing hand trucks, or may be integrated into a new powered ha... | 01/16/2007 |
| 7137464 | Stair climbing hand truck A hand truck for climbing stairs includes a frame having handles proximate a first end and at least two wheels proximate a second end. A stair climbing mechanism is engaged with the frame proximate the second end. The stair climbing mechanism has a motor and an outp... | 11/21/2006 |
| 7083012 | Motorized traction device for a patient support A patient support including a propulsion device for moving the patient support. The patient support includes a propulsion system having a propulsion device operably coupled to an input system. ... | 08/01/2006 |
| 7059434 | Hand controls for small loader A control system for a small work vehicle such as a compact track propelled loader has a control handle that is mounted onto a swinging support plate. The support plate swings about a vertical axis positioned forwardly of the control handle, and the control handle i... | 06/13/2006 |
| 6942226 | Pneumatic cot for use with emergency vehicles An ambulance cot is provided having a wheeled carriage, a frame for mounting the wheels, a horizontally oriented patient litter supported from the wheeled carriage and variable, pneumatically powered height scissors frame. The pneumatic actuator is designed to give ... | 09/13/2005 |
| 6832659 | Loader frame and bolt-on track drive A small loader has a central body that is formed as a unitary frame that has spaced apart side walls. The body is supported on drive and support units that are independently assembled, and have mounting plates that bolt to the exterior of the respective side walls o... | 12/21/2004 |
| 6749034 | Motorized traction device for a patient support A patient support including a propulsion system for moving the patient support. The patient support includes a propulsion system having a propulsion device operably connected to an input system. The input system controls the speed and direction of the propulsion dev... | 06/15/2004 |
| 6626255 | Towing vehicle for towing persons moving rollers or gliding bodies The invention relates to a towing vehicle which moves on rollers or sliding bodies, for towing persons. The towing vehicle is provided with a motor drive which drives a driving wheel (1) that is mounted in a chassis (2). The towing vehicle can be controll... | 09/30/2003 |
| 6449882 | Snow removal machine A walking-type snow removal machine comprises a snow removing member provided at a front part of a body frame for pushing snow forward, and crawler belts provided on right and left sides of the body frame. The body frame carries thereon an electric motor ... | 09/17/2002 |
| 6408962 | Convertible sled for transporting large game A convertible sled can be dragged silently into the woods by the hunter. Once the hunter has bagged his game, he converts the sled into a track-driven and battery-powered cart. The sled portion is at the bottommost part of the assembly on the way into the... | 06/25/2002 |
| 6155362 | Dolly system with a motorized rolling track A dolly system with a motorized rolling track is disclosed. The dolly system includes a dolly having two generally vertically extending side rails. An L-shaped support is provided at its lower end thereof and a cross brace is provided adjacent to its uppe... | 12/05/2000 |
| 5735361 | Dual-pole personal towing vehicle A personal traction transportation vehicle which includes two gear-motor-wheels which drive a connected chassis forward. The chassis is stabilized by a third trailing caster wheel. The vehicle is electrically driven by a removable battery pack. At least o... | 04/07/1998 |
| 5197558 | Stair-climbing wheelchair carrier A stair-climbing wheelchair carrier, comprising a carrier portion comprising a pair of endless belt crawlers, and a handle rotatably mounted on the carrier portion. A guide body is provided to mount a wheelchair and secured to the handle so as to be rotat... | 03/30/1993 |
| 5147002 | Robotic decontamination apparatus A remote controlled decontamination apparatus for removing, collecting and remotely disposing of contaminated material, including a complete system that provides a self-propelled vehicle having separate drives for left and right track assemblies as well a... | 09/15/1992 |
| 5064011 | Crawler-propelled truck A crawler-propelled truck includes a chassis frame assembly, an engine mounted on the chassis frame assembly and having a substantially vertical crankshaft, a gear transmission case having an upper portion coupled to the engine and housing a gear transmis... | 11/12/1991 |
| 4865142 | Load carry caterpillar and front wheel driven steerable vehicle A load-carrying vehicle is disclosed which has a chassis over which a load-carrying bucket or platform is fixed and which is, itself, mounted on a track drive. A motor assembly is mounted at the front of the chassis and the latter further has a bridge str... | 09/12/1989 |
| 4771839 | Stair-climbing wheelchair carrier A stair-climbing wheelchair carrier, comprising a carrier portion comprising a pair of endless belt crawlers, and a handle portion rotatably and detachably provided on the carrier. The handle portion is adapted to be rotated between an operating position ... | 09/20/1988 |
| 4747457 | Platform truck for transporting bulky loads A truck for transporting bulky loads, the truck having a frame provided with lateral crawler tracks and an upper load carrying platform movable in relation to the frame; a trolley assembly being connected to the frame for movement relative thereto to lift... | 05/31/1988 |
| 4729444 | Mobile security apparatus A method for and apparatus for the transfer of valuables from a collection point through an area accessible to the public to an armored vehicle is disclosed. A mobile security containment apparatus comprising a relatively heavy, handleless, and slow speed... | 03/08/1988 |
| 4688813 | Carrier for rescuing patients A carrier for rescuing patients having a frame having a pair of lower horizontal portions and upwardly inclined portions adjacent to the horizontal portions at rear end portions thereof. A pair of front and rear wheels are provided on the frame, and a pair of ... | 08/25/1987 |
| 4674584 | Stair-climbing wheelchair with stair step sensing means A stair-climbing wheelchair having a sensor at the front end thereof for sensing the presence of a stair step or an inclined ramp. The sensor emits signals which reflect from a surface and to a receptor in the sensor, the receptor being coupled to a micro... | 06/23/1987 |
| 4671369 | Stair-climbing wheelchair with means for cushioning vertical movements thereof A stair-climbing wheelchair having wheels defining a first wheel base and a pair of endless, flexible tracks providing a second wheel base, there being a motor-driven structure for moving the tracks into and out of ground-engaging positions. A first pivot... | 06/09/1987 |
| 4645022 | Tracked load carrying vehicle A tracked load carrying vehicle comprises a chassis (10); an engine (11) mounted on the chassis for propelling the vehicle; an output shaft (13) driven by the engine; two tracks (14,15) provided in parallel on either side of the chassis and each one runni... | 02/24/1987 |
| 4627508 | Step-negotiating vehicle A step-negotiating vehicle comprises a low-level chassis structure with motor-driven tracks, for carrying a load such as a wheelchair. The vehicle is provided with an extension support means to increase the support area defined by the track assembly, whic... | 12/09/1986 |
| 4585241 | Carrier for rescuing patients A carrier for rescuing patients having a frame having a pair of lower horizontal portions and upwardly inclined portions adjacent to the horizontal portions at rear end portions thereof. A pair of front and rear wheels are provided on the frame, and a pair of ... | 04/29/1986 |
| 4566550 | Stair-climbing wheelchair carrier A stair-climbing wheelchair carrier has a frame body, a pair of rail frames formed in a lower portion of the frame body and a pair of endless belt crawlers engaged with the wheels provided on the frame body and with the rail frames. A travelling wheel mec... | 01/28/1986 |
| 4432426 | Stair climbing wheelchair carrier A stair climbing wheelchair carrier having a carrier portion comprising a pair of endless belt crawlers, and a handle portion rotatably and detachably provided on the carrier. The handle portion is adapted to be rotated between an operating position and a... | 02/21/1984 |
| 4401178 | Wheelchair carrier A stair climbing wheelchair carrier comprising a handle assembly and base, the handle assembly for securing the wheelchair to the carrier, means for securing the handle assembly to the base, the base comprising a pair of spaced endless tracks having climb... | 08/30/1983 |
| 4290618 | Hand truck stair tread engaging device In a conventional hand truck, a stair tread engaging device having reduced friction and improved mobility provided by a plurality of rollers each rotating freely in its own socket and only on its own axis without forward movement.... | 09/22/1981 |
| 4198103 | Differential track assembly for a cable laying machine A track assembly for a vehicle comprising powered wheels at each side, and an endless track sleeved over the wheels on each side having solely a smooth driven surface friction contact with the associated wheels, whereby when the driving torque overcomes t... | 04/15/1980 |
| 4095662 | Garden tractor A garden tractor of the type steered by a walking attendant having a strong central structure in the form of a pair of rectangular plates rigidly interconnected by a centrally located cylindrical member extending transversely therebetween which is conveni... | 06/20/1978 |
| 4027889 | Stair-climbing carrier A tracked, stair-climbing carrier for carrying loads up and down stairs and across floors. The carrier includes a frame mounting a pair of parallel endless tracks at its sides for moving the frame forwardly and rearwardly along a floor and up and down sta... | 06/07/1977 |
| 4026373 | Hill plower A pedestrian controlled tractor particularly suitable for use in working farmland where the ground surface is rough and hilly. The tractor in its preferred form has a relatively narrow endless track driving means and is provided with tubular members direc... | 05/31/1977 |
