Class 280/25 - Spring

Subclass of Class 280 - Land vehicles
Definition: Sleds having springs supporting the load-carrier.
No. of patents: 30
Last issue date: 04/08/2008

Number	Title	Issue Date
7353901	Snowmobile with improved component layout An improved component layout in a snowmobile includes a muffler is disposed on the front side of an engine, and a lower portion of a steering shaft extends between the muffler and the engine. The engine is disposed rearwardly of the lower portion of the steering sha...	04/08/2008
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
7168657	Toy helicopter landing skid structure A toy helicopter landing skid structure includes an upper support stand, a propping member and a bottom stand. The upper support stands are connected to the bottom of a helicopter airframe, and the propping member is connected to the bottom of each upper support sta...	01/30/2007
6951343	Vehicle suspension apparatus A vehicle suspension apparatus includes a first, outer telescoping component and a second, inner telescoping component. The outer telescoping component includes an outer sleeve and an outer tubular member telescoped therein for movement along an axis of the outer te...	10/04/2005
6905128	Maneuverable and brakeable high performance snow sled A maneuverable, brakeable, roll resistant high performance snow sled suitable for use on downwardly sloping terrain. The preferred embodiment of the sled embodies a tandem, mirror image, in-line suspension and shock absorbing system connecting the main frame member ...	06/14/2005
6783134	Ski vehicle A ski vehicle includes a frame having a first ski mounted thereon. A steering column having a handlebar attached thereto is rotatably mounted to the frame. A second ski is mounted to the steering column. A seat post has a first end and an opposing second end. The fi...	08/31/2004
6601858	Maneuverable sled A maneuverable sled is provided for use over snowy terrain. In particular, the sled includes a platform, a spring, and two runners. The spring slidingly engages the platform providing the sled with excellent maneuverability....	08/05/2003
6575479	Three runner sled A three runner sled includes a single steerable front runner and two directionally fixed rear runners extending from a frame. The frame has a longitudinal backbone member with an elongate seat. Each rear runner has a knee rest somewhat forwardly positione...	06/10/2003
6241265	Recreational vehicle for snow covered hills The recreational vehicle disclosed here is a ski bike with four skis which is steerable using a handle bar. Both the front and rear skis have suspension systems which have shock absorbers. Brakes on each from ski serve to slow the bike and to assist in st...	06/05/2001
6036202	Sit-ski A sit-ski includes a ski and a base frame which is mounted on the ski. A seat support is pivotally mounted on the base frame for rotation about an axis that is above the ski and substantially perpendicular to the axis of the ski. This allows the seat to m...	03/14/2000
5863051	Folding skibob A foldable skibob includes a frame with a steering column journalled in a forward steering column bearing. A first pivot configuration is attached to the steering column and a front ski is articulated at the first pivot configuration. A second pivot confi...	01/26/1999
5242176	Rescue sled for use in the snow A rescue sled adapted to be pulled by a snowmobile including a patient/material carrying section and an attendant support section. The patient material carrying section is configured to carry an injured person to be transported by the rescue sled from a r...	09/07/1993
5174591	Extendable nesting ski support An extendable nesting ski support structure as for supporting cargo including collapsed shelter devices for towing or pulling over ice, snow, and terrain. The skis are pivoted on brackets attached to the supported base and the brackets are atttached to th...	12/29/1992
5028059	Hinged resting seat for a sled or cart vehicle A bicycle seat is supported on a vertical member which is supported by, and connected to, leg members that form a Y configuration. The legs of the seat mount into spring loaded hinges which anchor to the runners of a dog sled or base of a wheeled cart. Th...	07/02/1991
4804198	Vehicle with steering-controlled torsion bar stabilizer An anti-sway system for a steerable vehicle of the type employing a torsion bar suspension system. Operatively coupled to the torsion bar for each of the vehicle's steerable wheels or skis is a mechanism for increasing the effective spring rate of the sus...	02/14/1989
4773659	Articulated ski The stand up articulated ski described herein consists of a steerable first ski in front, a combination of steering shaft with handlebars attached to the first ski, a second ski following the first with tandem, spaced, front and rear toe cups on top, a br...	09/27/1988
4593921	Stabilizer system for a snowmobile Herein disclosed is a snowmobile stabilizer system which is constructed such that independent suspension systems attached to the right and left of a front portion of a snowmobile body for supporting steering skis, respectively, are equipped with air cushi...	06/10/1986
4544170	Snowmobile suspension system A snowmobile includes a pair of skis connected to the snowmobile frame by a forward suspension including a pair of telescopic struts which are biased to normally extended positions and are connected to a stabilizer member including a transverse torsion ba...	10/01/1985
4509766	Anti-rolling system for snowmobile of small size An anti-roll and self-centering torsion bar arrangement for the front suspension of a snowmobile. A torsion bar is interconnected between the strut suspensions of the front skis so as to be loaded during cornering and prevent roll. In addition the point o...	04/09/1985
4424979	Suspension and steering assembly for snowmobile Suspension and steering assembly for a snowmobile including at least one ski for supporting a front portion of its body and also for steering the snowmobile, comprising a strut means capable of telescopically expanding and contracting, spring means, a sho...	01/10/1984
4422657	Connection between telescopic suspension struts for snowmobile skis and stabilizer member A snowmobile has a front pair of skis carried by a front suspension, including right- and left-hand telescopic strut assemblies. The front suspension includes a U-shaped stabilizer bar having an intermediate section arranged for being loaded in torsion an...	12/27/1983
4361339	Steering ski suspension for snowmobiles A snowmobile includes a frame and a steering ski. A suspension interconnects them so the ski supports and steers the frame. A stationary cylinder is fixed to the frame, and a movable cylinder slides in it. A rod is fixed to the stationary cylinder and car...	11/30/1982
4342372	Telescopic strut suspension for snowmobile skis A snowmobile ski suspension comprises a telescopic strut formed from a fixed support tube and a guard tube reciprocably and swivelly mounted in the guard tube. The support tube is fixed to one end of a crossbar of the snowmobile frame. Steering of a ski a...	08/03/1982
4252354	Snowmobile suspension An improved connection between the two steering posts and the steering skis at the forward end of a snowmobile which includes for each post and each ski a downwardly convexed leaf spring connected at its front and rear ends to the ski and bracket structur...	02/24/1981
4143729	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...	03/13/1979
4034820	Suspension system for a snowmobile Disclosed herein is a device for use in a snowmobile suspension system also disclosed herein, which device facilitates increasing the stroke of a shock absorber used in the suspension system. The snowmobile disclosed herein comprises a body having a pair ...	07/12/1977
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
3967692	Snowmobile suspension system An improved snowmobile suspension system includes a pair of rails mounted on each of the skis supporting the front end of a snowmobile. A link is pivotally mounted between the rails and the snowmobile steering gear bracket and has a lever arm biased by a ...	07/06/1976
3931862	Ski suspension for front of snowmobile A suspension and steering assembly for a ski of a snowmobile includes a coil spring and shock absorbing means including a shock absorbing piston and rod connected at one end thereto. The shock absorbing means and coil spring are arranged generally paralle...	01/13/1976
3930547	Snow vehicle suspension system A suspension system for snow vehicles of the type comprising a pair of steerable skis which are attached to the forward end of the vehicle by means of leaf springs, the suspension system including a pair of direct acting, telescopic shock absorbers cooper...	01/06/1976

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Class 280/25 - Spring