Land vehicles – Skates – Wheeled skate
Reexamination Certificate
1999-04-05
2002-04-23
Johnson, Brian L. (Department: 3618)
Land vehicles
Skates
Wheeled skate
C280S011270, C280S011204
Reexamination Certificate
active
06375198
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a skate with in-line wheels.
Conventional in-line roller skates comprise a shoe comprising a quarter articulated to a shell, which has a rigid sole that is associated, in a downward region, with a usually U-shaped support or frame between the wings whereof wheels are pivoted. The wheels are thus arranged in line with respect to each other.
These conventional skates have some drawbacks: when skating, and particularly during thrusting, difficulties are in fact encountered in optimally and completely transferring the thrust imparted by the user, thus decreasing the effectiveness of the thrust and the comfort for the foot.
The user in fact tends to transmit forces mainly at the region of the foot sole lying below the metatarsal region, but the rigidity of the support and of the sole of the shoe instead force him, during thrusting, to fully rest the foot sole on the shoe sole, so that the transmitted forces are divided between the wheels that are pivoted at the front and the wheels that are pivoted at the rear, with a consequent loss of effectiveness in thrusting.
U.S. Pat. No. 5,634,648 discloses a roller skate with improved fit that is constituted by a first front body, for resting and locking the front part of the foot, and by a second rear body, for resting and locking at least the heel.
The first body and the second body are transversely rotationally associated to each other in a region that lies approximately above the pre-arch portion of the foot and in the interspace that lies between a first supporting frame and a second supporting frame for one or more wheels associated with said frames in a downward region.
Although this solution allows articulation of the shoe, it nonetheless has drawbacks; in fact, the rotation, stability, and overall rigidity of the skate are correlated only to the articulation point, which is not sufficient for their optimization.
These drawbacks are increased by the fact that during sports practice the skate is subjected, during periods of maximum thrusting, to continuous and often violent lateral stresses, as can occur for example when skating along a curve or during slalom skating or in particular during so- called “side-slip” braking.
The articulation point must therefore absorb all these applied stresses and at the same time ensure the rotation and rigidity of the shoe and good stability of the foot; however, these conditions cannot all be met simultaneously.
During skating, the foot is in fact subjected to considerable vibrations and lateral stresses that accordingly decrease the user's sensitivity in utilization and the lateral stability of the implement.
The user is also forced to increase the force in order to achieve optimum stability of the skate, with consequent tiring during exercise and reduction in comfort throughout sports practice.
SUMMARY OF THE INVENTION
A principal aim of the present invention is therefore to solve the described problems, eliminating the drawbacks of the cited prior art by providing a skate that allows the user to transmit forces in an optimum manner during thrusting, at the same time allowing a correct anatomical movement of the foot.
Within the scope of this aim, an important object is to provide a skate that allows to transmit efforts during thrusting selectively only at the front part of the foot, at the same time allowing to achieve optimum lateral support of the skate during all phases of sports practice.
Another object is to provide a skate having increased operating sensitivity and comfort, particularly during periods of maximum thrusting.
Another important object is to provide a skate that allows to achieve the necessary assurances of stability for the user throughout sports practice.
Another object is to provide a skate that can be produced at low costs and with conventional machines and equipment.
This aim, these objects, and others that will become apparent hereinafter are achieved by a skate with in-line wheels characterized in that it comprises a first member and a second member, at least one of said members being adapted to support a plurality of in-line wheels, said first member being rotatably associated with said second member.
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Excerpt of “Patent License Agreement” of Oct. 1, 1995 between Rollerblade, Inc. and Kablooe Products, Inc.
Caeran Francesco
Gonella Mario
Serafin Renato
Avery Bridget
Johnson Brian L.
Josif Albert
Modiano Guido
Nordica S.p.A.
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