Abstract: An electric wheelchair includes a main frame; a drivable wheel supported by the main frame; an electric motor disposed on the main frame and configured to drive the drivable wheel; a clutch configured to switch a power transmission path from the electric motor to the drivable wheel between an engagement state and a disengagement state; and a clutch operation handle configured to be moved in a predetermined range in an up-down direction. The clutch operation handle is configured to operate the clutch so as to be in: (i) one of the engagement state or the disengagement state when the clutch operation handle is stopped at a lowest position of the predetermined range; and (ii) the other of the engagement state or the disengagement state when the clutch operation handle is stopped at a highest position of the predetermined range.

Abstract: A vehicle; the vehicle includes a receptacle, a door, at least one door-hinge, a right-ski, a left-ski, at least one right-hinge, and at least one left-hinge. The receptacle may be a container having four sides, a bottom, and an opening which is covered by the door. The door is hinged to the receptacle by the at least one door-hinge and may be opened or closed manually. The right hinges attach the right-ski to the receptacle, and the left hinges attach the left-ski to the receptacle. In this way, each ski may be folded up against the receptacle, or turned down to be deployed and used.

Abstract: The present invention relates to a sports activity and accident risk monitoring system and a method thereof. The system includes a wearable sensing device that is as worn by a user and is capable of sensing an activity state of the user; a terminal capable of processing activity information in conjunction with the wearable sensing device; and a server that is connected to the terminal through a network, grasps a sports activity pattern, personal data for each item, and whether or not an accident occurs by receiving, processing, and analyzing the activity information of the user, and transmits a feedback signal to the terminal.

Abstract: A multipurpose cart assembly for use on hard and loose surfaces includes a wagon. A pair of skis is coupled to and selectively extensible from an underside of the wagon. The skis are configured to be extended from the wagon to contact a surface concurrently with wheels of the wagon being raised from the surface. A handle that is pivotally coupled to a front of the wagon comprises a plurality of nested sections and is selectively extensible. The handle is configured to be grasped in a hand of a user to pull the wagon selectively upon the wheels and the skis.

Abstract: The invention is directed to a center deck assembly for a tire building drum. The tire building drum is rotatably mounted on a central drive shaft and includes a center section. The center deck assembly is disposed in the center section of the drum and includes a hub that seats on and is secured to the central drive shaft. At least one piston extends circumferentially in the tire building drum about the hub and a plurality of segment bars are disposed about the circumference of the center deck assembly. The at least one piston is operably connected to the segment bars by a plurality of linkages, in which each of the linkages includes a scissor-lever mechanism.

Abstract: A portable seating apparatus includes a frame having first and second sides. A seat is disposed between the first and second sides of the frame. The seat is suspended between the first and second sides of the frame by multiple tension members such as straps. A first arm rest and first base member are positioned on the first side of the frame, and a second arm rest and second base member are positioned on the second side of the frame. One or more straps extends downwardly from each arm rest to support the suspended seat. In some embodiments, the first and second sides are hinged such that the seating apparatus may be folded for transport and storage. An arm rest hinge is disposed on each arm rest, and a base member hinge is disposed on each base member in some embodiments.

Abstract: A wheelbarrow apparatus that includes a frame assembly, a tub, a wheel assembly, and at least one auxiliary storage device and/or transport pin. In one embodiment, an auxiliary storage devices is a tube for storing elongated items, such as tools with elongated handles (e.g., rakes and shovels), and thin pieces of wood, metal, etc. In another embodiment, an auxiliary storage devices is a storage bin for storing smaller items, such as small hand tools, hardware, adhesive, rope, tool belt, papers, etc. In another embodiment, a transport pin is used to stabilize items during transport.

Abstract: A trailer for being pulled by a motor vehicle, the trailer comprising a chassis having a front section, a first side section and a second side section, wherein the front section comprises coupling means for being coupled to a motor vehicle. The trailer further comprises a first and a second bogie, each bogie having two wheels, the first bogie being connected to the first side section of the chassis in a first pivoting coupling and the second bogie being connected to the second side section of the chassis in a second pivoting coupling. The trailer comprises a first and a second runner extending in the driving direction of the trailer and the first and second runners are moveable between an on-road position and an off-road position, and the first runner is mechanically coupled to the first bogie and the second runner is mechanically coupled the second bogie so that the runners may pivot relative the chassis.

Abstract: The present invention relates to improvements in the design of a rear-steer collapsible, in particular the invention relates to a number of safety enhancing features that provide a safer and more versatile rear steer portable wheelchair.

Abstract: A device comprising: a hollow sleeve; and a leg slidable in the sleeve; the leg having a retracted position in the sleeve and an extended position in the sleeve, the leg having one or more auxiliary wheels or a continuous track at an end of the leg; the device being configured for attachment to a wheelchair between a front wheel of the wheelchair and a back wheel of the wheelchair.

Abstract: The luggage sliders include various embodiments for permanent or removable installation upon the underside of a roll-around suitcase, wheeled cart, or similar article to facilitate movement of the article up a flight of stairs or other stepped inclined surface. Some of the sliders are pivotally extendible and retractable. Others are telescopically extendible and retractable. Still others are pivotally attached to one edge of the article, and pivotally fold against a surface of the article for storage. Still others may be adjustably clamped about the base of the article. Still others are pivotally attached about a wheel axle to rotate and lie beneath the wheel for operation. Still others may be removably attached directly to the wheels of the luggage, cart, or other wheeled article. Still others are pivotally attached to a point on the luggage and telescopically extend to project below the wheel for use.

Abstract: A stair-climbing wheelchair comprising deformable main rear wheels comprising lockable suspension elements and front supporting wheels comprising lockable suspension elements is disclosed herein. The wheelchair may operate in at least two modes, a standard mode and a stairs mode. In standard mode, the wheelchair may operate similar to an ordinary basic wheelchair, with suspension elements locked and rigid. In stairs mode, the suspension elements may be activated and the rear wheels may be deformable to readily negotiate an uneven surface, wherein the front suspension elements may be elongated to provide balance while climbing. The operating principles behind the functionality of the device disclosed herein may also be applied to other devices used to negotiate stairs, such as devices used to move heavy appliances on stairs.

Abstract: A ski attachment device for a portable cooler is disclosed. The ski attachment device includes a u-shaped rod that is positioned over a vertically extendable handle of the cooler. The rod is attached to a support member at the lower free ends of the rod. The free ends of the rod include threaded portions over which knobs are attached to secure the support member in a particular vertical position with respect to the cooler. A wide ski is hingedly attached to the support member. The ski is pivotally positioned in a lowered position so that the curved portion of the ski is situated beneath wheels attached to the under side of the cooler. The ski is also positionable in a raised position. A flexible strap having a buckle is attached to the support member and encircles the periphery of the cooler.

Abstract: A convertible car seat and stroller including a car seat, a support member disposed within a base of the car seat, a pair of openings disposed within a bottom surface of the base of the car seat, a pair of middle supports, a plurality of a pair of wheels attached to the support member, an inverted U-shaped telescopic handle, a grip portion medially disposed around a perimeter of a middle portion of the handle, an activation control disposed on a top side of the grip portion, and a pair of handle adjustment controls. The plurality of a pair of wheels has a retracted position and an alternate extended position. The handle has an elongated position and an alternate abbreviated position.

Abstract: The wheel-ski system is for use with a vehicle adapted for travel on road and snow-covered surfaces. The system has a ski-engaging travel mode and a wheel-engaging travel mode. It includes an elongated ski, a supporting leg pivotally coupled to the vehicle, a wheel, an actuator mounted between a back plate and a first lever arm, and a positioning device for positioning a wheel-supporting axle into an upper position when the supporting leg is in a first position, and positioning the wheel-supporting axle into a bottom position when the supporting leg is in a second position.

Abstract: The wheel-ski system is for use with a vehicle adapted for travel on road and snow-covered surfaces. The system has a ski-engaging travel mode and a wheel-engaging travel mode. It includes an elongated ski, a supporting leg pivotally coupled to the vehicle, a wheel, an actuator mounted between a back plate and a first lever arm, and a positioning device for positioning a wheel-supporting axle into an upper position when the supporting leg is in a first position, and positioning the wheel-supporting axle into a bottom position when the supporting leg is in a second position.

Abstract: A networked jump safety system and method for monitoring a jump area is described. The system comprises a safety analysis station connected via a network to least one monitoring station. The output of a sensor is analyzed at the safety analysis station to determine if it is safe for a rider to enter a jump area. A status corresponding to the determination is transmitted via the network from the safety analysis station to a light emitting output.

Abstract: The present invention provides a retractable wheel system for snowmobile skis. The retractable wheel system of the present invention may be installed on a snowmobile ski without affecting its structural integrity by installing the system on the reinforced portion of the snowmobile ski. When a user circulates in a path with little or no snow, the retractable wheel system is positioned in the extended configuration by the user and the system will automatically return to the retracted configuration when the user returns in a snowy zone. This is realized by using a pre-tensioned spring that will reposition the wheel in the retracted configuration. The spring transmits a rotational movement to the member on which the wheel is fixed.

Abstract: A jump safety system and method for monitoring a jump landing area is described. The system of examining a landing area associated with the jump includes a camera, a memory, a processor, an image processing module, and a light emitting output. The camera is positioned to generate a camera output that displays the landing area. The landing area has a declining slope angle that reduces a landing force in relation to the slope angle. The image processing module, which is controlled by the processor, determines a landing area clear status by analyzing the camera output and determining the landing area is clear of obstructions. A landing area obstruction status is determined by identifying that there is an obstruction in the landing area. The light emitting output communicates either the landing area clear status or the landing area obstruction status.

Abstract: A ski lift for an airplane having skis has a body transversely rotated with a shaft on a ski and an axle secured to the body rotatably supporting a wheel. A bar secured to the body engages the ski to limit rotational movement of the body and locate the axle and wheel in engagement with a support surface laterally of the vertical plane of the shaft to retain the ski above the support surface. A handle is used to manually rotate the body and angularly move the axle and wheel.

Abstract: An apparatus and method for the improving of ski jump safety comprises a first detector for detecting a skier entering a jump site, wherein the first detector produces a first signal, a second detector for detecting the skier exiting the jump site, wherein the second detector produces a second signal, a processor for processing the first signal and the second signal, wherein the processor produces a message signal, and a communicator for communicating the message signal to a next skier. Also, an apparatus and method for the improving of ski jump safety comprises an exit detector for detecting a skier exiting a jump site, wherein said exit detector produces an exit signal, and a signaller for signalling said exit signal to a next skier.

Abstract: 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 pivotal movement about a plate pivotal axis. A wheel attachment assembly is provided for rotatably attaching the wheel to the wheel attachment section. An actuator is operatively coupled to the actuating plate for selectively pivoting the actuating plate about the plate pivotal axis between a plate deployed configuration and a plate retracted configuration wherein in the plate deployed configuration the position of the actuating plate is such that the wheel protrudes at least partially below the ski gliding surface for engaging the ground surface and in the plate retracted configuration the position of the actuating plate is such that the wheel is retracted above the ski gliding surface for preventing the wheel from engaging the ground surface.

Abstract: A child's wagon is provided with a mobile base portion and a body portion that define a large inner cavity for storing various articles. Head, neck and tail assemblies may be provided so that the wagon resembles a desired animal. A frame assembly provides the head and neck with realistic movement when the wagon is moved. A cover for the wagon's inner chamber may be shaped like a saddle to support one or more children. Additional accessories such as saddlebags, bottle holsters, and a coiled cord pacifier may be provided. The tongue may be pulled manually or disassembled into a tow bar to be pulled by other motive devices.

Abstract: 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 upper end and a lower end. A ski has an upper surface, a lower surface, a back end and a front end. The lower end of the leg is attached to the upper surface of the ski. The leg is rotatably coupled to the chair portion such that the ski may be positioned in a substantially horizontal lowered position or in a substantially vertical lifted position adjacent to the chair portion.

Abstract: A pneumatic locking swivel caster comprises a swivel caster and a locking device which may be activated by fluid pressure. The swivel caster may be a dual wheel swivel caster. An improved theatrical prop or scenery element comprises a pneumatic locking swivel caster and a control system. The control system may comprise a tank filled with pressurized air and a control valve. A pneumatic locking swivel caster may be locked into position by activating the control valve and pressuring the caster with air. The pneumatic locking swivel caster may comprise a triple swivel caster adapted such that all three sets of wheels are locked by air pressure.

Abstract: A skateboard simulator provides a stable platform for wheeled skateboard-type actions. The simulator has a pair of spaced truck-like elastomeric support means mounted to a deck to simulate the response of a conventional skateboard to user actions. Spaced contact lobe elements provide a frictional contact with the ground while flexing in response to user action to simulate the response of wheeled skateboard. The support means are preferably of a unitary urethane construction with the contact lobe element portions being of a hollow configuration.

Abstract: A shoe type apparatus is disclosed comprising a roller skate assembly having at least four wheels coupled to a sole portion of the shoe type apparatus for roller skating, and an in-line skate assembly having another set of wheels coupled to the sole portion for in-line skating. The shoe type apparatus provides at least three distinct configurations of the roller skate and in-line skate assemblies, namely having the wheels of the roller skate assembly lower than, level with, or higher than the wheels of the in-line skate assembly. This flexible arrangement permits a user to roller skate, to roller blade, or to perform a new combination thereof.

Abstract: A mechanism is provided for extending and retracting wheels on a baby rocking carriage which includes two parallel arcuate beams, four base members each fixedly mounted on one distal end of each of the arcuate beams and having a passage and a cavity each defined in an underside thereof, four wheel modules each pivotally disposed on an underside of a respective one of the four base members. The mechanism includes a sleeve rotatably mounted in the passage of each of the base members and having an extension pivotally engaged with each of the wheel modules. A control member has a plug fixedly mounted in a chamber defined in the sleeve to rotate therewith and has a lug extending outwards of the sleeve. A catch member is pivotally mounted in an opening defined in the lug and has a first end portion and a second end portion having a boss detachably received in the cavity of each of the base members. A biasing member is mounted between the first end portion of the catch member and the lug.

Abstract: A folding cart can be unfolded from a flat, collapsed position to an open position. The cart has opposing front and back side walls which have ledges on their opposing faces, and opposing foldable walls hingedly secured to the front and back side walls. A bottom shelf is positioned on the ledges, and a top lid is positioned on top of the walls to form an inner storage cavity. The cart has wheel assemblies which are pivotally mounted to opposite sides of the back wall, and adjustable legs for firmly fixing or securing the cart to the ground. An umbrella pole passes through openings in the lid and the bottom shelf.

Abstract: 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 second locked position wherein the wheels are directed below the ski supports.

Abstract: An aircraft ski for attachment to the axle of the ground wheel of the aircraft includes a pair of rams moving the ski upwardly and downwardly from a retracted position to a deployed position. On each side of the ski is provided a respective lever which is connected to the axle and extends therefrom rearwardly to a rear end of the ski. Intermediate the length of the lever is provided a cross torque tube which prevents twisting movement of the ski as it is deployed. At a rear end of each of the levers is provided a cross shaft which is attached to the rear end so that the cross shaft is rotated as the lever moves with the deployment of the ski. The cross shaft is attached to a rear restraint cable which is thus paid out and drawn in respectively by the movement of the ski between the deployed and retracted positions. A front restraint cable extends from a forward end of the ski to the aircraft.

Abstract: A ground handling wheel assembly for coupling to a skid of a helicopter enables the helicopter to be moved on the ground. The wheel assembly has a main shaft, which has on each end a wheel shaft offset from and parallel with the main shaft. Wheels are rotatably mounted to each wheel shaft. A breakover bar locates within a hole in the wheel assembly to rotate the main shaft, and thereby the wheel shafts in a circular path, lifting the skid from the ground.

Abstract: A snowmobile of the type comprising a conventional front ski assembly and endless track but also a rear ski assembly and characterized by the latter, being pivotally connected relative to the body of the snowmobile and adjustable in height relative to the rear end of the endless track for improved longitudinal stability and comfort, better longitudinal load distribution and adjustment in relation with the condition of the snow on the ground and the desired traction. A suspension arm system resiliently and adjustably attaches the rear end of the endless track and the rear ski assembly to the body of the snowmobile with a remote control for selective adjustment of the height as aforementioned.

Abstract: A brake surface is provided for slide coaster sleds in which the brake surface is configured to be an elongated surface of much greater length relative to the width. The braking surface is particularly useful for use on wet slide surfaces because the foremost sections of the brake surface remove the moisture at the brake-slide interface and dry the surface through frictional contact. Therefore, the following brake portions of about two-thirds of the length are available to bring about effective braking action. Preferably, the elongated brakes are formed in a U-shape in cross section with a central groove for containing moisture. Also, it is preferred to have two spaced apart brake surfaces positioned on opposite sides of the longitudinal center line of the sled.

Abstract: This invention discloses a combination of a vaulting box and a wooden horse used as means of plaything for infants, the interior of the vaulting box serving as a receptacle. The upper structural frames may all be received into the lower structural frames so that they may be conveniently stored and carried.

Abstract: The present invention provides a shopping cart of the two-wheel variety wherein an auxiliary sled attachment is provided, said attachment being adapted to be moved from one to the other of two selectable positions and to be retained in either of such positions, said attachment consisting of a sled having a snow engaging surface which in one position will underlie the wheels, and in the other position will be held out of engagement with the sidewalk or street and in substantially parallel coincidence with a side of the cart.

Abstract: The specification discloses a conversion system for a pedal operated cycle to provide a pedal operated cycle for use on ice and/or a motor operated cycle for use on snow, both with improved rear wheel apparatus, wherein a regular bicycle can be converted to a vehicle having a forward ski mechanism and an integral rear wheel and rearward ski mechanism. The combination rear wheel and rearward ski mechanism comprises a pair of brackets mounted to the frame in place of the rear wheel, which, in turn, has been remounted within said bracket. To the brackets there are attached, by way of braces, a pair of winter use skis.

Abstract: A shopping cart having wheels is also provided with an attachment having skis allowing the same to be pulled over snow or other soft surfaces. The attachment comprises a pair of skis movable between a sliding position and a stowed position whereby the shopping cart may travel over snow or sand.

Abstract: A dual braking system is provided for high speed sleds in which the center of gravity of the operator is placed between fore and aft brake shoes, which are operated simultaneously by the operator without the need for shifting positions. Thus, the brake system is effective even though the operator is naturally shifted forward by the braking action. Also included in the brake system is a wheel assembly, which may be operated by the single brake lever to accommodate fast acceleration. Operating the brake lever to shift the wheel assembly into effective operative shifts the center of gravity of the operator over the wheel assembly. The dual brake shoes pivot around horizontal axes and are disposed adjacent the longitudinal centerline of the sled to avoid lateral deflection of the sled when the brakes are applied.