Abstract: An assisting instrument allows a person to effectively train their core muscles by movements in twisting directions or one leg raises, and allows the twisting movements to be made in a prone posture. A first body part is comprised of a rectangular parallelepiped part and an integrated semicircle pillar section. When the assisting instrument is used during workouts in the prone posture, the person's two anterior superior iliac spines and pubis part are protected by a first pad, a second pad, and a third pad, respectively, and their abdomen is fitted into a groove part. When the person raises one of their legs, the semicircle pillar section rolls to the opposite side. As a result of holding their body to prevent the rolling and prevent their body from being thrown out of the instrument, the person puts their strength in their core muscles which can thus be trained.

Abstract: A sledge hockey device including a seat portion and an undercarriage portion that includes a pair of elongate blade support portions each having a first upper contact surface region, provided for communicating with a second lower contact surface region of a transverse support portion. A pair of transverse support portions are provided. The first upper and second lower contact surface regions also include a plurality of complementary engagement formations to provide a positive engagement and lateral indexing between the elongate blade support portions and the transverse support portions. The elongate blade support portions and the transverse support portions are maintained in engagement by a plurality of coupling members.

Abstract: A riding apparatus is provided. The riding apparatus includes a seat portion configured to be mounted to a board at a location between a head and a tail of the board, the seat portion including a top surface and opposite lateral sides, wherein the top surface is configured for seated engagement by a rider and the opposite lateral sides include a waist about a longitudinal centerline of the board configured to accommodate at least the feet of the rider between a forwardmost end and a rearward most end of the seat portion, and at least one hand grip extending from the seat portion, wherein the seat portion and the at least one hand grip are integrally formed. The riding apparatus may further include a board having a head and a tail, a bottom surface of the board being configured for engaging a snow or ice covered surface.

Abstract: A tracked vehicle includes a track assembly with a bogie assembly for riding on snow, mud, sand, etc. The track assembly includes a continuous track movably disposed about a drive wheel and a bogie wheel disposed rearward of the drive wheel. The drive wheel and bogie wheel are pivotally coupled to a rear fork. The rear fork is pivotally coupled to a frame of the tracked vehicle. A bias member biases the drive wheel and the bogie wheel towards the ground.

Abstract: A tracked vehicle, or a kit for converting a standard bicycle into a tracked cycle, includes a track assembly with a bogie assembly for riding on snow, mud, sand, etc. The track assembly includes a continuous track movably disposed about a drive wheel coupled to a frame of the vehicle or bike, and a bogie wheel disposed rearward of the drive wheel. The bogie assembly includes a pair of arms coupling the bogie wheel to the frame of the vehicle or bike in a cantilever fashion.

Abstract: A snow-sliding vehicle including a bearing rear runner and a directional front runner to which is connected a steering column pivoting in a sleeve firmly attached to the upper end of a stiff frame connecting both runners, and the lower end of which is attached to a supporting base surmounting the bearing runner and provided for supporting the feet of the user. The front portion of said base is connected to the bearing runner by a mechanical connection providing it with clearance ostensibly perpendicular to said runner controlled by a damping device.

Abstract: 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), wherein the caterpillar type driving structure (A) comprises a driving wheel drivingly connected to the sprocket pedal power mechanism, an auxiliary wheel pivotally supported on the tail of the bicycle frame, a caterpillar provided on the driving wheel and the auxiliary wheel, and a connecting rod for determining the positional relation between the driving wheel and the auxiliary wheel; the multi-functional switchable front guide mechanism (B) comprises switch means fastened to at the distal end of the a front rod of the bicycle frame, a front guide rolling wheel rotatably connected to a pivotal shaft provided by the switch means, and a front guide sliding board fixedly connected to two hinge support points provided by the switch means.

Abstract: A multipurpose sled which comprises an upwards open container(1), which includes a bottom (15), a rear wall (16a, 16b, 16c), side walls (17) and a front wall (18), runners (2) which extend backwards over the container, and supporting means extending essentially as long as the runners for setting the sled on the back ends of the runners and the supporting means for using the sled as a shelter, is characterised in that it comprises handles (3) and means (7) for attaching the handles detachably to the rear part of the container in different positions for different purposes of use so that in a first position (P2) the handles (3, 3a) form said supporting means for setting the sled on the back ends (2a) of the runners and the supporting means for using the sled as a shelter.

Abstract: A rear drive assembly for a snow bicycle includes a body adapted to be supported by an axle which rotatably supports a rear wheel of a bicycle. An upper arm is rigidly affixed to and extends upwardly from the body. A lower arm is rigidly affixed to and extends at an angle downwardly and rearwardly from the body. A track tensioning and guide assembly is positioned at the remote attachment end of the lower arm. An extendible and retractable attachment member is positioned at a remote attachment end of the upper arm and is, preferably, attached to a seat post of the bicycle. As the bicycle begins to ascend a slope the attachment member retracts to maintain the track in ground contact and as the bicycle begins to descend the slope the attachment member extends to maintain the track in ground contact.

Abstract: A description is given of a vehicle (1) with pedals (7), for locomotion on snowy and/or icy surfaces (S), having a frame (15) connected to a saddle (5) and to a directional handlebar (8), and also having a driving pulley (4) driven by the said pedals (7), which comprises a wheel (2), driven via flexible transmission means (3) connected to the said driving pulley (4) and located between a front snow skid (9), connected to the said directional handlebar (8), and one or more rear snow skids (10) mounted below and behind the saddle (5). Projecting means (11i) are fitted to or formed on the outer surface (2c) of the wheel (2) so as to exert a desired grip on the said snowy and/or icy surfaces (S) when the said wheel (2) is driven by the said pedals (7).

Abstract: A tracked vehicle (18), or a kit (10) for converting a standard bicycle (14) into a tracked cycle, includes a track assembly (22) with a bogie assembly (84) for riding on snow, mud, sand, etc. The track assembly includes a continuous track (60) movably disposed about a drive wheel (64) coupled to a frame (34) of the vehicle or bike, and a bogie wheel (68) disposed rearward of the drive wheel. The bogie assembly includes a compliant and resilient arm (80) coupling the bogie wheel to the frame of the vehicle or bike. The arm exerts a force against the bogie wheel, which forces the track towards the riding surface.

Abstract: A human powered, recumbent snowmobile is here presented. It is designed to enable its rider to cycle on packed snow and in up to several inches of unpacked snow. In an effort to minimize manufacturing costs, parts from the larger mountain bicycle and bicycle markets are used.

Abstract: A convertible snow cycle/bicycle apparatus for providing a vehicle which can be used all year long. The convertible snow cycle/bicycle apparatus includes a frame including a front portion and a rear portion; and also includes a steering assembly being attached to the front portion of the frame; and further includes a seat mounted upon the rear portion of the frame; and also includes a drive assembly including axle members being attached to the frame and also including a ski assembly being removably mounted to the steering assembly and further including a track assembly being mounted to the axle members.