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| Number | Title | Issue Date |
| 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 |
| 6774597 | Apparatus for obstacle traversion An apparatus for traversing obstacles having an elongated, round, flexible body that includes a plurality of drive track assemblies. The plurality of drive track assemblies cooperate to provide forward propulsion wherever a propulsion member is in contact with any f... | 08/10/2004 |
| 6263989 | Robotic platform An articulated tracked vehicle that has a main section, which includes a main frame, and a forward section. The main frame has two sides and a front end, and includes a pair of parallel main tracks. Each main track includes a flexible continuous belt coup... | 07/24/2001 |
| 6053265 | High ground-clearance hybrid track/wheel drive A rough-terrain vehicle employs separate track drives located on opposite sides of a vehicle body, like the wheels of a car. The tractor drives can revolve the track to permit track-driven travel. The drives can also halt the tracks relative to the drives... | 04/25/2000 |
| 5979580 | High ground-clearance hybrid track/wheel drive A rough-terrain vehicle employs separate track drives located on opposite sides of a vehicle body, like the wheels of a car. The tractor drives can revolve the track to permit track-driven travel. The drives can also halt the tracks relative to the drives... | 11/09/1999 |
| 5890553 | Multifunction automated crawling system The present invention is an automated crawling robot system including a platform, a first leg assembly, a second leg assembly, first and second rails attached to the platform, and an onboard electronic computer controller. The first leg assembly has an in... | 04/06/1999 |
| 5517416 | Traction controller for crawler vehicles This invention relates to the controlling of the travel of a crawler vehicle and aims at resolving the issue of making a crawler vehicle travel on an ungraded land with the crawlers effectively gripping the road surface. According to the present invention... | 05/14/1996 |
| 5413367 | Movable chair A movable chair includes a chair main body and a pair of left and right traveling devices. The chair main body has a seat portion. The traveling devices are disposed on left and right sides of the chair main body and are designed to move the chair main bo... | 05/09/1995 |
| 5411108 | Walking transport vehicle A walking transport vehicle that is comprised of a platform with two closed guides mounted on its bottom surface, said guides having rectilinear sections and curved sections with a common center of curvature. Movably mounted in the guides are the upper en... | 05/02/1995 |
| 5366038 | Robot traveling on wall face A robot traveling on wall face is capable of advancing or retreating on the wall face in a stable manner with a quick change-over of its traveling direction with the help of a plurality of movable adsorption discs designed for a close contact with the wal... | 11/22/1994 |
| 5337846 | Disaster relief robot and operation controller therefor A disaster relief robot can be prevented from falling over a precipice or the like while safety for the operator can be ensured during outdoor field transportation of relief supplies such as rescue apparatus and materials, medicines or food stuffs in the ... | 08/16/1994 |
| 5297644 | Vehicle with tiltable propulsion units A transverse axis tubular hub (24) couples each propulsion unit (4) to the vehicle body (2), and supplies signals representative of the forces that it transmits. A tilt motor (22) of the propulsion unit bears on the hub to tilt the propulsion units about ... | 03/29/1994 |
| 5248008 | Self-traveling robotic vehicle with inclinable propulsion units A self-traveling robotic vehicle having inclinable tracklaying propulsion units for operating in a hostile environment. Each propulsion unit has a track, a built-in propulsion drive for driving the track, and a built-in inclination drive for inclining the... | 09/28/1993 |
| 5174405 | Self-traveling robotic vehicle with inclinable propulsion units The invention concerns a vehicle (1) with inclinable tracks in which an inclination movement of a propulsion unit (3) about its articulation axis (5) is assisted by reverse propulsion movement of the track (4) of the propulsion unit. The invention is appl... | 12/29/1992 |
| 5139317 | Track guiding apparatus A track guiding apparatus (10) for guiding the track links (22) of a moving undercarriage system (12) of a track-type vehicle having a track roller frame (18) and a plurality of track rollers (20) includes a support bracket assembly (14) secured to the ro... | 08/18/1992 |
| 5104205 | Track guiding guard A track guiding guard for a crawler type vehicle which is mounted along the lower side of a track frame is disclosed. The track guiding guard comprises a pair of left and right guard members which rotatably support track rollers. Each guard member has a s... | 04/14/1992 |
| 5096270 | Guiding guard for crawler tracks A guiding guard assembly for a crawler track vehicle is relatively easy to install initially as a "retrofit kit", and can also be easily removed and replaced as needed. Furthermore, the guiding guard does not obstruct idler bearings of the lower run of th... | 03/17/1992 |
| 5042827 | Automatically shifting stair climber structure for a repositionable hand truck A two-wheeled hand truck has a vertically inclined upright frame with a load supporting nose at its lower end. The frame is supported on a pair of wheels mounted on an axle by brackets which are pivotally connected to the frame for movement from a first l... | 08/27/1991 |
| 4915184 | Cushioning mechanism for stair-climbing wheelchair A latch for each of a pair of cushioning arms, respectively, of a stair-climbing wheelchiar. The latch for each arm includes a first member coupled to the arm and a second member coupled to a fixed support of the wheelchair, with the second member being c... | 04/10/1990 |
| 4785902 | Suction type traveling carriage A suction type traveling carriage which can be maintained in very intimate contact relationship with a wall, a ceiling or the like and can be moved in a stable manner by rotation of suction cups.... | 11/22/1988 |
| 4702331 | Self-traveling machine A self-traveling machine incorporating a plurality of drive mechanisms each comprising a combination of a crawler unit having an endless belt and a road wheel. The drive mechanisms makes it possible for the machine to travel on and along a stairway and a ... | 10/27/1987 |
| 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 |
| 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 |
| 4566707 | Wheel chair A mechanism for the transport of an object across relatively level surfaces as well as to ascend and descend stairways. The mechanism is described particularly with respect to a wheel chair for handicapped persons and is provided with a frame and a pair o... | 01/28/1986 |
| 4061199 | Chassis for a vehicle capable of travelling over obstructions The invention relates to a chassis for a vehicle capable of travelling over obstacles. Besides roadwheels and step wheels an endless elastic belt is provided, the elastic belt engaging portions of the step wheel peripheries. The elastic belt is coupled to... | 12/06/1977 |
