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US 4,709,937 AGranted
Two-wheeled combination roller skate-ski
OwnerJerry Lin, Brian Lin +1inventors
InventorsJerry Lin, Brian Lin, Tiung-Jen Lin
Life of this patent
Estimating the term…
Abstract
A two-wheeled combination roller skate-ski includes a base with safety straps and front brake, two wheels, a transverse frame and a longitudinal frame. A player may select to use either the transverse frame or longitudinal frame to mount the wheels outwardly of two opposing sides of the base in a position such that intersections of a plane in which the base lies and circles defined by the wheels are chords of the circles. Hubs of the wheels are located above the base of the skate-ski, imparting additional stability to the skate-ski and helping the player to maintain his balance.
Claims5
A roller skate comprising:
- a telescopic flat base member including a front base plate and a rear base plate which overlap and are slideable relative to one another, each base plate having two parallel longitudinal guide grooves extending therein and two longitudinally elongated positioning apertures spaced apart from one another and extending in each of said grooves, said positioning apertures of said front base plate being in register respectively with said positioning apertures of said rear base plate;
- screw means to penetrate through said positioning apertures and to adjustably clamp said front and rear base plates against one another;
- two wheels to be mounted on said base member;
- safety foot straps attached to said base member for retaining a player's foot on said base member,
- a telescopic transverse frame for mounting said wheels which includes a left frame and a right frame each of which has a horizontal plate portion underlying and clamped against said base member, and an upstanding portion extending upward from said horizontal plate portion past one of the sides of said base member, said horizontal plate portions of said left and right frames being slideable relative to one another, overlapping one another, and having four transversely elongated openings to register with said positioning apertures to receive said clamping screw means, and two wheel mounting shafts projecting horizontally outwardly from said upstanding portions of said left and right frames at a height which permits said wheels to be rotatably mounted with the centers thereof substantially higher than said telescopic frame;
- and
- a brake member removably attached to the underside of said front base plate.
4 more elements
A kit for a combination roller skate-ski comprising:
- a telescopic flat base member including a front base plate and a rear base plate which overlap and are slidable relative to one another, each base plate having two parallel longitudinal guide grooves extending therein and two longituidinally elongated positioning apertures spaced apart from one another and extending in each of said grooves, said positioning apertures of said front base plate being in register respectively with said positioning apertures of said rear base plate;
- screw means to penetrate through said positioning apertures and to adjustably clamp said front and rear base plates against one another;
- two wheels to be mounted on said base member in a roller skate configuration or a ski configuration;
- safety foot straps attached to said base member for retaining a player's foot on said base member;
- a telescopic transverse frame for mounting said wheels as skating wheels, which includes a left frame and a right frame each of which has a horizontal plate portion underlying and clamped against said base member, and an upstanding portion extending upward from said horizontal plate portion at one of the sides of said base member, said horizontal plate portions of said left and right frames being slideable relative to one another, overlapping one another, and having four transversely elongated openings to register with said positioning apertures to receive said clamping screw means, and two wheel mounting shafts projecting horizontally outwardly from said upstanding portions of said left and right frames at a height which permits said wheels to be rotatably mounted with the centers thereof substantially higher than said telescopic flat base in the roller skate configuration;
- and
- a longitudinal frame for mounting said wheels as skiing wheels when said transverse frame is detached from said base member, said longitudinal frame including two substantially parallel, elongated plates spaced apart from one another with said elongated plates having two circular openings to register with said positioning apertures in each of said grooves of said elongated plates, and wheel mounting shafts mounted respectively between said front end portions and between said rear end portions at said height for rotatably mounting said wheels in the ski configuration.
4 more elements
Dependencies are inferred from the claim text.