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US 4,376,532 AGranted
Exerciser for muscles used in skiing
OwnerVernon D. Hunstadinventor
Life of this patent
Estimating the term…
Abstract
Apparatus for providing exercise to muscles used in skiing. A pair of foot platforms are provided which are affixed by rocker assemblies above a pair of first platform members. The first platform members are each rotatively mounted to a base. Biasing springs interconnect the first platform members. Anchor means are provided for securing the tips of ski poles held by the user.
Claims8
Apparatus for exercise of muscles used in skiing comprising
- a base,
- a pair of rotational bearing members fixed to said base,
- a pair of platform members each positioned substantially centrally over each of said bearing members,
- a plurality of coil springs each with a first end and a second end,
- the first end of each of said coil springs being attached to one of the platform members and the second end of each of said coil springs being attached to the other of the platform members,
- a pair of rocker assemblies is mounted upon each of said platform members,
- a foot platform is mounted centrally over each of said pairs of rocker assemblies,
- each of said rocker assemblies comprises an upper and a lower flexible bushing, a formed member, a pair of tubular bushings, and a pair of retaining members,
- said formed member has a horizontally extending flattened portion, a vertical extension and a body,
- said body of said formed member has extending from the opposite sides thereof a shaft,
- said shaft passes through said tubular bushings,
- said tubular bushings are fixed to said platform members by said retaining members,
- said flattened portion is positioned between said upper and said lower flexible bushings,
- said vertical extensions engage the lower surfaces of said foot platforms in touching relationship thereto,
- said upper flexible bushings are fixed to the lower surfaces of said foot platforms,
- said lower flexible bushings are fixed to the upper surfaces of said platform members.
13 more elements
Exercise apparatus comprising
- a base,
- a first rotatable platform member attached to said base,
- a second rotatable platform member attached to said base and spaced from said first rotatable platform member,
- a plurality of tensioning members affixed to and interconnecting the opposing edges of each of said platform members,
- each of said tensioning members being positioned substantially parallel to the other tensioning members,
- said tensioning members resisting rotational movement of said platform members.
3 more elements
Dependencies are inferred from the claim text.