Abstract: A sprocket is disclosed. The sprocket may have a cylindrical hub having a first hub end and a second hub end disposed opposite the first hub end. The sprocket may also have a sprocket wheel disposed on the cylindrical hub between the first hub end and the second hub end. The sprocket may further have at least one tooth disposed on the sprocket wheel. The at least one tooth may have a tooth bottom disposed on a root circle. The at least one tooth may also have a tooth flank extending radially outward from the root circle to an outer surface of the at least one tooth. In addition, the at least one tooth may have a flat extending from the tooth bottom at a generally obtuse angle relative to a radial axis of the at least one tooth.

Abstract: A mobile vehicle includes a platform, a pair of track assemblies and a pair of wheel assemblies. The pair of track assemblies is attached to opposing sides of the platform. The pair of wheel assemblies is attached to opposing sides of the platform. Each wheel assembly has at least a first and second wheel and a track-wheel interchange mechanism operably connected to the first and second wheel. The track-wheel interchange mechanism rotatably moves the first and second wheel from wheel mode wherein the wheels drive the mobile vehicle to a track mode wherein the track assemblies drive the mobile vehicle.

Abstract: A carrier with a stair climbing aid includes a carrier including a top surface, a bottom surface, and a front surface and a rear surface between the top surface and the bottom surface, at least one guide bar attached to the rear surface, the guide bar having a first end disposed proximate a corner between the bottom surface and the rear surface and a second end at least as high as stair risers of stairs expected to be climbed, at least one elongated member movably attached to the guide bar, and an arrangement for urging a top end of the elongated, member toward the second end of the guide bar.

Abstract: A wheelchair curb-climbing and curb-descending system for aiding a wheelchair to negotiate a curb. The system includes a wheelchair attachment mechanism; a pair of front arms adapted to extend to lift a front portion of wheelchair and to retract back to lower the front portion of the wheelchair; a pair of rear arms adapted to extend to lift a rear portion of wheelchair and to retract back to lower the rear portion of the wheelchair. The system further includes an arm extending mechanism for extending/retracting the arms; a rotatable lifting-arm wheel at free ends of each arm; a wheel motor for rotating the arm wheels; an operation control unit; and a leveling mechanism for ensuring the seat of the wheelchair remains substantially level to the ground during operation of the system.

Abstract: A boat trailer can be disassembled and packaged as a “flat-pack” system which will minimize the storage space required as well as the transport and production cost of larger boat trailers. The trailer can then be reassembled by a dealer or the end customer upon delivery. The boat trailer includes a support frame supported on the ground by wheels at a stern section thereof and a tow bar at a bow section thereof. The boat trailer includes separate frame components which can be disassembled into a flat pack form and joined together in series to form the assembled boat trailer.

Abstract: The present disclosure relates to a wheelchair (1) comprising: a chassis (3), a seat system (5) attached to the chassis (3), which seat system (5) has a backrest (5b) having a front side (5c) and a backside (5d), and an energy absorber (9) having a proximal end (9a) attached to the seat system (5) or joining the chassis (3), a distal end (9b) having means that enable attachment of straps or belts to the distal end (9b), and an intermediate portion (9c) extending from the proximal end (9a) to the distal end (9b) in a direction from the front side (5c) towards the back side (5d), wherein the intermediate portion (9c) has a curved portion adapted to straighten and plastically deform when the energy absorber (9) is subjected to a pulling force above a predetermined threshold.

Abstract: A drive apparatus for a track of a snowmobile includes a drive shaft and a drive sprocket coupled to the drive shaft. The drive sprocket includes a first drive member having a plurality of teeth configured to engage drive lugs on an inner surface of the track and a second drive member having plurality of teeth configured to enter the openings formed in the track upon rotation of the drive shaft. First and second connecting webs extend between the teeth of the first and second drive members, respectively. The first and second connecting webs each have first and second side angled surfaces aligned an angle of less than 180° relative to each other to minimize snow build up on the first and second drive members, respectively.

Abstract: A wheeled enclosure having an interior volume defining body including a rigid base and a plurality of upwardly extending and flexible sides. A plurality of wheeled supports are incorporated into the rigid base. A telescoping handle extends from a rear of the body and may be secured to an edge of the rigid base. Other features include the provision of rigid inserts which are seated within vertical pockets integrated into each of four interconnecting sides associated with a flexible body. The flexible body can include an upper half which reverse folds into an interior defined by the lower half and the rigid inserts. The rigid base can also be foldable and can convert the assembly between expanded use and collapsed storage positions.

Abstract: A towing apparatus for use with a vehicle having a passage, such as a walkway through a roof bolter. The apparatus includes a towing implement adapted for spanning the passage in an operative condition and for exposing the passage in a stowed condition.

Abstract: A bicycle front fork assembly includes a stem and a front fork. The front fork includes a fork crown, a first fork leg and a second fork leg. The stem is connected to the fork crown. The top end of the first fork leg and the second fork leg are connected to the two ends of the fork crown, respectively. The bottom end of the first fork leg and the second fork leg are connected to two ends of a hub which are opposite to each other, respectively. A disk brake rotor has a center coaxially connected to one end of the hub close to the first fork leg. A disc brake caliper is partially disposed within an accommodating recess formed on a surface of the first fork leg facing the second fork leg and close to the disk brake rotor.

Abstract: A bicycle operating device is basically provided with a base member, a first operating member, a second operating member and an electric control unit. The base member is configured to be attached to a bicycle handlebar having a handlebar axis. The first operating member is supported on the base member such that the first operating member is configured to rotate about the handlebar axis while the base member is attached to the bicycle handlebar. The second operating member is supported on the base member such that the second operating member is configured to rotate about the handlebar axis while the base member is attached to the bicycle handlebar. The electric control unit generates a first signal and a second signal as the first operating member and the second operating member are operated respectively.

Abstract: “IMPROVEMENTS INTRODUCED IN AN ELLIPTICAL DRIVE MECHANISM AND A STEERING MECHANISM, APPLICABLE TO VELOCIPEDES IN GENERAL,” more specifically, it is about elliptical velocipedes (1) of the bicycle, tricycle, and scooter type, with said velocipedes having a tubular crossmember (2A) where the basic components are mounted, namely: fork (2b), handlebar mounting (2c), front wheel, rear wheel, center sprocket, and cranks, as well as an elliptical drive mechanism (M1) and a steering mechanism (M2). The structural frame (2) has a crossmember (2A), whose end is aligned with the imaginary center of the rear wheel, a tubular transverse shaft with tubular connections (3a) installed on its end portions, while a guide rod (3) that functions as a path for the sliding of the respective block (4) is attached to each of said connections.

Abstract: A bicycle and bicycle parking and lock system wherein a hub locking device that is secured to a bicycle cooperates with a parking rack. The bicycle includes an engagement member that is secured to an axle of the bicycle. The engagement member selectively removably cooperates with a recess formed in the parking and lock system. The parking and lock system includes a number of upstanding members that are positioned to generally flank the front wheel of a bicycle to maintain the bicycle in a generally upright orientation. Each or select number of the upstanding members include a lock system that cooperates with the locking engagement member so as to secure the respective bicycle with respect to the parking system.

Abstract: An ECU acquires a steering torque detected by a torque sensor (step S1). The ECU drives an electromagnet of a solenoid actuator (step S2). The ECU drives a steering operation motor in accordance with the direction of the detected steering torque acquired in step S1 to apply, to an output shaft of a clutch, a torque acting in such a direction that a torque being exerted on a clutch mechanism is reduced (step S3). When a predetermined time has elapsed since driving of the steering operation motor in step S3 (step S4: YES), the ECU 40 reverses a driving direction of the steering operation motor to apply, to the output shaft of the clutch, a torque acting in a direction opposite to the direction of the last torque applied (step S5).

Abstract: A quint configuration fire apparatus includes a chassis, a body assembly coupled to the chassis and configured to receive a ground ladder, a fire hose, a pump, and a water tank, a ladder assembly including a plurality of extensible ladder sections, the ladder assembly having a proximal end that is coupled to the chassis, a single front axle coupled to a front end of the chassis, a single rear axle coupled to a rear end of the chassis, a single set of outriggers coupled to the chassis and positioned forward of the single rear axle, and a stability foot coupled to the chassis and positioned rearward of the single rear axle. The ladder assembly is extensible to provide a horizontal reach of at least 100 feet.

Abstract: An aerial ladder assembly for a fire apparatus includes a first truss member, a second truss member, and a plurality of rungs coupling the first truss member to the second truss member. The first truss member includes a first base rail, a first hand rail elevated from the first base rail, and a plurality of lacing members coupling the first base rail to the first hand rail. The second truss member includes a second base rail, a second hand rail elevated from the second base rail, and a plurality of lacing members coupling the second base rail to the second hand rail. The first truss member and the second truss member define a first zone and a second zone separated by a transition, and the first base rail and the second base rail have a first shape within the first zone and a second shape within the second zone.

Abstract: The invention concerns an attachment arrangement for attaching an external component to a chassis of a vehicle, such as a salvaging device for use when performing salvaging work and transport of heavy duty vehicles. The attachment arrangement comprises at least one elongated mounting device, where each mounting device comprises a first fastening element arranged to provide a rigid connection with a corresponding connection means in the chassis, and a second fastening element for connecting the external component. Further, a support element is arranged between the first fastening element and said second fastening element. The support element is arranged to bear against the chassis when the first fastening element is connected to the chassis.

Abstract: A cooling structure for a saddle-type vehicle includes a main frame; an engine; an exhaust pipe extending rearward from a front portion of the engine; fuel tanks disposed laterally of the engine; and a skid plate covering front portions of the engine and the exhaust pipe. The skid plate includes openings defined in a central upper portion thereof for introducing ram air from a front of the vehicle toward the engine. The openings are covered with a mesh member. The skid plate has first bulging portions bulging forwardly on both sides of the openings. The fuel tanks include bulging tank portions disposed rearward of and along the first bulging portions and covering front portions of the engine. Ram air guided toward a central area in a vehicle widthwise direction by the first bulging portions passes through the mesh member and the openings to cool the exhaust pipe and the engine.

Abstract: An adjustable trailer hitch security apparatus for use with an adjustable trailer hitch assembly to selectively cover the side holes of the hitch assembly's hitch mount, thereby preventing unauthorized access to the fastening system used to secure a trailer connection to the hitch mount comprises a moving cover portion connected to a fixed attachment portion. The cover portion is defined by a rectangular box shaped, hollow housing having an open elongated side opposite an elongated side wall and an open bottom side opposite an top side wall. The attachment portion is defined by a rectangular plate body having a top lip and a bottom lip, with a plurality of attachment apertures in its body. The cover portion is hinged to the attachment portion, enabling it to rotate from a open position to a closed position in which the cover portion and the attachment portion form a rectangular enclosure.

Abstract: A steering apparatus includes: a rotation shaft that is caused to rotate by steering of a steering unit; a housing that accommodates at least a part of the rotation shaft; an opening that is formed in the housing so as to communicate an inside of the housing with an outside thereof; a cover member that covers the opening while ensuring ventilation via the opening; and an outer circumferential wall that is provided along an outer circumference of the cover member, wherein the outer circumferential wall has a cutout in a lower portion in a vertical direction of the outer circumferential wall.