US 4,101,142 AGranted

Snow sled turning mechanism

OwnerRichard W. Turnerinventor

Life of this patent

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Abstract

A snow sled having a front steering ski rotatably and pivotally mounted on the front end of the sled body in such a way that the ski is turnable by the sled rider to steer the sled, and that turning of the ski in either direction from its center position effects tilting of the ski about its longitudinal axis to present in plow-like fashion the bottom surface of the ski in the direction of sled movement for enhancing the steering action of the ski. The sled is also equipped with a novel braking arrangement operable by the rider.

Claims2

Dependent claims

A snow sled comprising:

a sled body adapted to support a rider,
a pair of runners along opposite sides of said body adjacent the rear end thereof and having coplanar bottom snow engaging surfaces for slidably supporting said sled body on snow,
a steering ski at the front end of said body having a lower snow engaging surface,
means supporting said ski on said body for turning movement relative to said body comprising a steering shaft extending through the front end of said body with the longitudinal axis of the shaft disposed substantially in a plane normal to the common plane of said runner surfaces and aligned approximately with the longitudinal center line of said body, and with said axis sloping forwardly toward its lower end, bearing means on said body supporting said shaft for rotation on said axis, an arcuate stirrup extending lengthwise of and fixed at its ends to said ski and arching upwardly from said ski between said stirrup ends, a clamp adjustable along and adapted to be secured in adjusted position along said stirrup, and means pivotally connecting the lower end of said shaft to said clamp for turning of said ski with said shaft about said shaft axis and pivotal movement of said ski relative to said shaft about a pivot axis parallel to said ski surface and transverse to both said shaft axis and the longitudinal axis of said ski,
a steering member connected to the upper end of said shaft and operable by the rider for turning said ski,
said steering shaft comprising upper and lower telescoping sections, a cross pin extending through the upper end of said lower shaft section and into longitudinal slots in said upper shaft section so as to connect said shaft sections of rotation of the sections in unison and relative axial movement of the sections, a first compression spring surrounding the upper end of said lower shaft section and seating against said cross pin and a seat in said upper shaft section for urging said lower section upwardly relative to said upper shaft section, and a second compression spring surrounding the lower end of said lower shaft section and seating against shoulders on said shaft sections for urging said lower section downwardly relative to said upper section,
said bearing means comprising radial and thrust bearing means supporting said upper shaft section or rotation and against axial movement relative to said body, and
said ski and steering member being connected to the lower end of said lower shaft section and the upper end of said upper shaft section, respectively.

5 more elements

Dependencies are inferred from the claim text.

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Abstract

A snow sled comprising:

a sled body adapted to support a rider,
a pair of runners along opposite sides of said body adjacent the rear end thereof and having coplanar bottom snow engaging surfaces for slidably supporting said sled body on snow,
a steering ski at the front end of said body having a lower snow engaging surface,
means supporting said ski on said body for turning movement relative to said body comprising a steering shaft extending through the front end of said body with the longitudinal axis of the shaft disposed substantially in a plane normal to the common plane of said runner surfaces and aligned approximately with the longitudinal center line of said body, and with said axis sloping forwardly toward its lower end, bearing means on said body supporting said shaft for rotation on said axis, an arcuate stirrup extending lengthwise of and fixed at its ends to said ski and arching upwardly from said ski between said stirrup ends, a clamp adjustable along and adapted to be secured in adjusted position along said stirrup, and means pivotally connecting the lower end of said shaft to said clamp for turning of said ski with said shaft about said shaft axis and pivotal movement of said ski relative to said shaft about a pivot axis parallel to said ski surface and transverse to both said shaft axis and the longitudinal axis of said ski,
a steering member connected to the upper end of said shaft and operable by the rider for turning said ski,
said steering shaft comprising upper and lower telescoping sections, a cross pin extending through the upper end of said lower shaft section and into longitudinal slots in said upper shaft section so as to connect said shaft sections of rotation of the sections in unison and relative axial movement of the sections, a first compression spring surrounding the upper end of said lower shaft section and seating against said cross pin and a seat in said upper shaft section for urging said lower section upwardly relative to said upper shaft section, and a second compression spring surrounding the lower end of said lower shaft section and seating against shoulders on said shaft sections for urging said lower section downwardly relative to said upper section,
said bearing means comprising radial and thrust bearing means supporting said upper shaft section or rotation and against axial movement relative to said body, and
said ski and steering member being connected to the lower end of said lower shaft section and the upper end of said upper shaft section, respectively.

5 more elements