Combination snowshoe and ski

Claim 2

A combination snowshoe and ski comprising: a lightweight hollow elongate plastic envelope having a rear end and an upturned forward end and formed of plastic having a relatively low friction on snow, said envelope including a longitudinally ribbed top portion and a transversely ribbed bottom portion with the transverse ribs being of ripsaw shape facing toward the rear end of the envelope to resist rearward sliding thereof on snow, the ribs of the top and bottom portions being secured together within the envelope at their crossing points, and a foot-securing binding on the top portion.

Claim 3

The invention defined by claim 1 characterized in that the envelope is shaped to provide a hollow marginal edge extending longitudinally from the forward to rear ends thereof.

Claim 4

The invention defined by claim 1 characterized in that said top portion is generally dish-shaped in transverse cross section and said longitudinal ribs extend along the bottom of such dish shape and define in transverse cross-section a corrugated wall, and said transverse ribs are juxtaposed and fused to said longitudinal ribs.

Claim 5

A combination snowshoe and ski comprising: a lightweight hollow elongate plastic envelope having a rear end and an upturned forward end and formed of plastic having a relatively low friction on snow, said envelope including a longitudinally ribbed top portion and a longitudinally and transversely ribbed bottom portion with the transverse ribs being of rip-saw shape facing toward the rear end of the envelope to resist rearward sliding thereof on snow, the ribs of the top portion being secured to the transverse ribs of the bottom portion within the envelope at their crossing points, and a foot-securing binding on the top portion.

Claim 6

A combination snowshoe and ski comprising: a lightweight hollow elongate plastic envelope having a rear end and an upturned forward end and formed of plastic having a relatively low friction on snow, said envelope including a longitudinally ribbed top portion and a longitudinally and transversely ribbed bottom portion with the transverse ribs being of rip-saw shape facing toward the rear end of the envelope to resist rearward sliding thereof on snow, the ribs of the top portion being secured to the transverse ribs of the bottom portion within the envelope at their crossing points, and a foot-securing binding on the top portion.

Claim 7

A combination snowshoe and ski comprising: an elongate hollow plastic member having spaced apart top and bottom wall portions secured together around the periphery of the member, said top portion being longitudinally corrugated and said bottom portion being transversely corrugated with said top and bottom portions being secured together at crossing points of their respective corrugations, one end of said member being upturned to form a ski tip, said bottom corrugations being spaced apart longitudinally and having gently upwardly sloping forward faces to slide over snow during tip-first movement of the member over a snow surface and having snow-biting rearward faces to resist reverse movement of the member over a snow surface, said bottom portion also having longitudinally extending rib means for providing directional stability during movement of the member over a snow surface, and a foot binding on the upper portion including a toe-embracing element and an adjustable elastic heel strap.

Claim 8

A combination snowshoe and ski comprising: an elongate hollow plastic member having spaced apart top and bottom wall portions secured together around the periphery of the member, said top portion being longitudinally corrugated and said bottom portion being transversely corrugated with said top and bottom portions being secured together at crossing points of their respective corrugations, one end of said member being upturned to form a ski tip, said bottom corrugations being spaced apart longitudinally and having gently upwardly sloping forward faces to slide over snow during tip-first movement of the member over a snow surface and having snow-biting rearward faces to resist reverse movement of the member over a snow surface, said bottom portion also having longitudinally extending rib means for providing directional stability during movement of the member over a snow surface, and a foot binding on the upper portion including a toe-embracing element and an adjustable elastic heel strap.

Claim 9

A combination snowshoe and ski comprising: a lightweight hollow elongate plastic envelope having a rear end and an upturned forward end and formed of a plastic having a relatively low friction on snow, said envelope having a bottom portion defining a snow-running surface, said bottom portion having a plurality of longitudinally spaced-apart transversely extending corrugations having gently sloping forward faces and snow-biting rearward faces, said envelope having a top portion secured to said transversely extending corrugations to rigidify the envelope, and a foot binding on the top portion.

Claim 10

A combination snowshoe and ski comprising: a lightweight hollow elongate plastic envelope having a rear end and an upturned forward end and formed of a plastic having a relatively low friction on snow, said envelope having a bottom portion defining a snow-running surface, said bottom portion having a plurality of longitudinally spaced-apart transversely extending corrugations having gently sloping forward faces and snow-biting rearward faces, said envelope having a top portion secured to said transversely extending corrugations to rigidify the envelope, and a foot binding on the top portion.

Claim 11

The invention defined by claim 6 characterized in that said top portion has a plurality of longitudinally extending corrugations.

Claim 12

The invention defined by claim 7 characterized in that the corrugations of the top and bottom portions are fused together at juxtaposed crossing points.