Class 180/186 - With at least one surface-engaging propulsion element

Subclass of Class 180 - Motor vehicles
Definition: Vehicle provided with one or more supporting-surface-contacting
No. of patents: 39
Last issue date: 09/09/2008

Number	Title	Issue Date
7422083	Snowmobile having a knuckle connected to a body frame via an arm A snowmobile includes a vehicle body frame, an arm connected to the vehicle body frame, and a knuckle connecting the arm and a ski. The knuckle includes a frame and a connection member connecting the arm and the knuckle and the knuckle is arranged inside of the fram...	09/09/2008
7401674	Snowmobile A snowmobile includes a seat having a rear end with a rear end face. The rear end face is inclined upwardly and rearwardly from an upper surface of a tunnel of a frame so that a cavity is defined beneath the seat between the inclined rear end face of the seat and th...	07/22/2008
7395890	Snowmobile track suspension A rear track suspension for a snowmobile having a single resilient element for biasing both the front and rear arms. The slide rail is permitted to pitch between first and second pitching constraints in response to terrain obstacles in a gradual manner as the motion...	07/08/2008
RE40289	Internal combustion engine for a snowmobile A snowmobile includes an improved internal combustion engine. The engine comprises a crankcase, a crankshaft rotatably journaled within the crankcase, a cylinder block assembly extending from the crankcase, and a cylinder head assembly connected to an end of the cyl...	05/06/2008
7367418	Snowmobile air box assembly The present invention is directed to an air box assembly for a snowmobile. The air box assembly is capable of being positioned frontward of the snowmobile engine, relative to a front end of the snowmobile. In this position, throttle noise being dampened by the air b...	05/06/2008
7353899	Snowmobile with improved air intake structure An improved snowmobile component layout structure includes an engine provided at front portion of the vehicle body, a cylinder head of the engine is inclined by an angle θ rearwards from a vertical axis, a steering shaft extends forwardly of the engine, and an air ...	04/08/2008
7328765	Snowmobile tunnel and rear heat exchanger The top wall of a snowmobile tunnel, which accommodates the endless drive track of the snowmobile, is provided with recesses at locations corresponding to the path followed by studs carried by the endless track. In another aspect of the invention, the rear of the tu...	02/12/2008
7306067	Engine coupling system A vehicle comprises a vehicle body. An internal combustion engine is mounted to the vehicle body. The engine comprises a crankshaft mounted in a crankcase. A drive system is mounted to the vehicle body. A transmission is coupled with the drive system. A coupling sys...	12/11/2007
7281598	Snowmobile To apply special contrivances to the structure and layout of a reserve oil tank disposed on the front side of a dry sump type internal combustion engine mounted on a snowmobile, thereby to achieve effective utilization of space in the snowmobile, and to achieve a fu...	10/16/2007
7249647	Snowmobile steering and suspension for improved performance in turns A snowmobile steering mechanism adapted to place higher pressure on the outside ski than on the inside ski when the snowmobile enters and exits turns, said steering mechanism being adapted to include the suspension in the steering action of the snowmobile causing th...	07/31/2007
7222689	Snowmobile with intercooler A snowmobile with an intercooler includes a four-stroke-cycle engine unit disposed in an engine room covered by an engine hood, and the engine unit includes an engine body, a turbocharger, an intercooler for cooling an intake-air, which is pressurized and heated up ...	05/29/2007
7188693	Frame construction for a vehicle A frame assembly is described including a tunnel, an engine cradle disposed forward of the tunnel and connected thereto, and a sub-frame disposed forward of the engine cradle and connected thereto. A forward support assembly extends upwardly from the subframe. An up...	03/13/2007
7147074	Snowmobile A snowmobile including a chassis, shell, and an engine. The shell may be fixed to a front portion of the chassis and extend away from the chassis in a forward direction. The shell may be disposed forward of the steering axis. The shell may define a chamber that flui...	12/12/2006
7147077	Engine starter mechanism arrangement for snow vehicles An engine starter mechanism arrangement for snow vehicles, in which a starter mechanism is disposed so as to maintain excellent traveling stability of the snow vehicle. A crankshaft (7) extends through an engine (2) in a transverse direction of a body ...	12/12/2006
7124847	Frame construction for a vehicle A frame assembly is described including a tunnel, an engine cradle disposed forward of the tunnel and connected thereto, and a sub-frame disposed forward of the engine cradle and connected thereto. A forward support assembly extends upwardly from the subframe. An up...	10/24/2006
7124848	Frame construction for a vehicle A frame assembly is described including a tunnel, an engine cradle disposed forward of the tunnel and connected thereto, and a sub-frame disposed forward of the engine cradle and connected thereto. A forward support assembly extends upwardly from the subframe. An up...	10/24/2006
7104355	Snowmobile, and the arrangement of the engine and accessory components thereof A snowmobile, having an arrangement of components in which the layout of various accessory devices is improved for an internal combustion engine mounted thereon. A dry sump oil tank, a water pump and a starter motor are disposed in a concentrated space at a forward-...	09/12/2006
7100730	Snowmobile air box assembly An air box assembly for a snowmobile is disclosed. The air box assembly is capable of being positioned frontward of the snowmobile engine, relative to a front end of the snowmobile. In this position, throttle noise being dampened by the air box assembly is further r...	09/05/2006
7063178	Frame assembly for snowmobile A snowmobile has a body frame. A rear frame is coupled with the body frame. The rear frame defines a generally horizontally extending bottom section. Side sections generally vertically extend from side portions of the bottom section. A rear section generally vertica...	06/20/2006
7059440	Snowmobile A snowmobile including a frame, drive track, and an engine. The engine extends in a first direction from a cylinder bore axis of the engine and a back side extends in a second direction from the cylinder bore axis. Air may enter a cylinder bore of the engine from th...	06/13/2006
7048293	Snow removal flap A footrest for a snowmobile comprises relatively large openings and a cover plate attached therebeneath to form a snow discharging passage in communication with the openings permitting snow on the footrests to be forced down therethrough and prohibiting snow from tr...	05/23/2006
6929081	Engine arrangement for a four cycle engine An arrangement of a four cycle engine is disclosed for use in a vehicle providing a relatively low center of gravity for improved handling and maneuverability. The engine components are located on opposing sides of the longitudinal axis of the vehicle and behind the...	08/16/2005
6923287	Drive mechanism for a snow vehicle A drive mechanism for a snow vehicle, i.e., so-called snowmobile, includes: a four cycle engine having a cylinder head at the top thereof, arranged at the approximate center of an engine room formed in the front body of the snow vehicle; a steering post having a pai...	08/02/2005
6899191	Actuated ski suspension This actuated ski suspension provides a method of raising and lowering a vehicle to which it is attached by raising and lowering the ski assembly in a vertical plane. Additionally, the process of raising and lowering the vehicle also incorporates a mechanism which e...	05/31/2005
6880660	Snowmobile A snowmobile comprising a frame defining a tunnel and a track rotatably supported by the frame is disclosed. An engine is connected to the frame and operatively coupled to the track by a drivetrain. The engine has a front side extending in a first direction from a c...	04/19/2005
6796395	Snowmobile A snowmobile providing an enhanced riding experience is disclosed. A snowmobile in accordance with the present invention may include a frame defining a tunnel and a track rotatably supported by the frame. The snowmobile may also include an engine connected to the fr...	09/28/2004
6725958	Snowmobile A snowmobile has an engine with a compact arrangement that includes a crankshaft, an output shaft, and an auxiliary shaft. The crankshaft extends along a first axis, the output shaft extends along a second axis, and the auxiliary shaft extends along a third axis. Tw...	04/27/2004
6631778	Shock linkage assembly for a snowmobile suspension system The present invention provides a snowmobile suspension system comprising a slide frame for engagement with an endless track, a suspension arm, a bracket arm, and a rocker arm. The suspension arm has an upper portion adapted to be pivotally mounted relativ...	10/14/2003
6604594	Foot grip An engine cradle adapted for receiving an engine includes a left side wall defining a C-shaped opening therein. The engine cradle also includes a right side wall, which is essentially a solid wall that provides a reflective surface for reflecting heat to ...	08/12/2003
6467559	Propulsion device and method of use The present invention generally relates to a propulsion device and method of use of the propulsion device that propels at least one user equipped with at least one friction-reducing device. The propulsion device typically comprises a motor, a drive train,...	10/22/2002
6454037	Internal combustion engine for a snowmobile A snowmobile includes an improved internal combustion engine. The engine comprises a crankcase, a crankshaft rotatably journaled within the crankcase, a cylinder block assembly extending from the crankcase, and a cylinder head assembly connected to an end...	09/24/2002
6328124	Snowmobile front suspension A front snowmobile suspension of the type having a ski carried at the front end of a trailing arm. The rear end of the trailing arm is pivotably secured to the chassis and the front end of the trailing arm is pivotably secured to the chassis by a pair of ...	12/11/2001
6234262	Snowmobile steering and suspension system A steering and suspension system for snowmobiles including a steering linkage connecting a steering handle with a steering spindle on each ski for causing an outside ski during a turn to move outwardly from the snowmobile and the inside ski to move inward...	05/22/2001
6227323	Exhaust control system for snowmobile engine A snowmobile comprised of a frame having a centerline in a front to rear direction, an engine supported by the frame, the engine having a body defining at least one combustion chamber and having a crankshaft extending generally perpendicular to the center...	05/08/2001
6199649	Snowmobile steering and ski suspension In a snowmobile ski suspension having two parallel front mounted steerable skis, each ski is steerable by rotation of the trailing suspension arms about a frame mounted bearing forward of the center of the ski. Steering input from the handlebar rotates th...	03/13/2001
5967532	Towable auger carrier for snow machines An auger carrier designed to hold augers and to be towed behind a snow machine. The device has a curved bottom plate that holds the auger cutting head. Two extension arms are attached to the curved plate. The extension arms are used to extend the length o...	10/19/1999
5564517	Snowmobile conversion frame kit A snowmobile conversion frame kit including a frame member arranged for securement to a roll bar, that in turn is secured to an associated snowmobile, such that the frame member includes a steering assembly at its forwardmost end and the steering assembly...	10/15/1996
4109739	Power driven ski-bob A power driven ski-bob having a frame supported by a front steerable ski and a rear power driven ski sub-assembly, the rear end of which is forceably biased downwards to improve traction and steerability....	08/29/1978
3977485	Snow vehicle suspension system A snow vehicle suspension system including a pair of suspension struts associated one with each of the two steerable skis of the vehicle; each of the struts including a first generally tubular shaped housing fixably secured to the underside of the vehicle...	08/31/1976

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Class 180/186 - With at least one surface-engaging propulsion element