Abstract: A suspension system for a tracked vehicle providing a wide range of performance characteristics via a user-adjustable overload spring assembly which engages a rear suspension element. An optimum spring force can depend on the both operator characteristics and local operating conditions. A user is afforded the ability to adjust a rear suspension system to provide desired ride characteristics. A suspension system including a movable stop to define a mechanical relation between a rear suspension arm and a front suspension arm is also disclosed.

Abstract: A suspension for a tracked vehicle providing a wide range of performance characteristics via a user-adjustable spring system within a rear suspension portion. An optimum spring force can depend on the both operator characteristics and local operating conditions. A user is afforded the ability to adjust a rear suspension system to provide desired ride characteristics. A suspension system particularly for long-tracked snowmobiles is disclosed.

Abstract: A snowmobile ski having a front portion the bottom of which is slightly concave. On each side of the middle portion of the snowmobile ski there is a downwardly extending longitudinal side portion. At the front of each downwardly extending longitudinal side portion are located a forward-facing horizontal wedge and a forward-facing vertical wedge. At the rear of each downwardly extending longitudinal side portion are placed a rear-facing horizontal wedge and a rear-facing vertical wedge. A flexible loop is attached to, and mounted flush with, the bottom of the front portion of the snowmobile ski. The flexible loop curves in front of, and above, the front portion of the snowmobile ski, before being slidably attached to the top of the front portion of the snowmobile ski. The middle portion of the snowmobile ski is thicker than either the front portion or the rear portion of the snowmobile ski.

Abstract: A portable baby seat has a flexible seat portion hung from a tubular frame for cantilevered mounting on a table edge. A U-shaped horizontal frame member extends through a hollow top seam of the seat's back and sides with end portions of the member extending forwardly for engagement with the top of the table. Each of a pair of lower support arms engage the underside of the table at a point forward of the U-shaped member's engagement. Each support arm is mounted by means of a rotatable sleeve on one of the U-shaped member's end portions. Connected to each sleeve is a curved member having a downwardly extending arm portion, a forwardly extending arm portion, and an upwardly extending end portion. The downwardly extending end portion extends in a direction away from the axis of rotation of the sleeve, while the upwardly extending end portion extends in a direction towards the axis of rotation of the sleeve.