In-line roller skate with vibration absorption system

a technology of vibration absorption and roller skate, which is applied in the direction of skates, sport equipment, apparel, etc., can solve the problems of affecting the comfort of skating, the foot may become numb, and the shock and vibrations are transferred to the boot unhindered or undampened, so as to reduce shock and vibrations

Inactive Publication Date: 2005-06-16
DUROCHER JACQUES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The design effectively reduces shock and vibration transfer to the foot, enhancing comfort while maintaining the responsiveness and stability of the skate during high-speed maneuvers and turns.

Problems solved by technology

In-line roller skates are therefore increasingly used on roads and on generally rough or hard surfaces which are often very uncomfortable for the skater as the bumps, cracks and holes of any shape and size induce shocks and vibrations of the wheels which are transferred directly to the foot of the skater.
The skater's feet may become numb from repeated vibrations induced by rough surfaces and joints, including the ankle joints and the knee joints, and muscles may become sore from repeated shocks.
However, since the front portion of the chassis is secured to the skate boot through a pivot pin, shocks and vibrations are transferred to the boot unhindered or undampened.
A chassis mounted to a skate boot in the manner described above has an inherent tendency to become misaligned vertically and laterally relative to the skate boot during various maneuvers where high forces are applied to the in-line skate such as when turning or accelerating.
Hence prior existing suspension and / or vibration absorption systems for in-line skates are less responsive and somewhat unstable at high speed as well as in turning maneuvers than a skate with a rigidly mounted chassis.

Method used

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  • In-line roller skate with vibration absorption system
  • In-line roller skate with vibration absorption system
  • In-line roller skate with vibration absorption system

Examples

Experimental program
Comparison scheme
Effect test

second embodiment

[0035] FIGS. 7 to 9 illustrate the mounting of skate boot 20 onto chassis 48. In this particular embodiment, the front end of chassis 48, is provided with vertical slots 102 on each side of chassis 48 instead of apertures 87 (FIG. 5) for securing chassis 48 to the mounting brackets 44 of outsole 40. A resilient member 104 such as a flat deformable rubber is installed between the bridge portion 72 of chassis 48 and the underside of oustsole 40. Chassis 48 is secured to front mounting brackets 44 by inserting axle bolt 106 through apertures 88 and through vertical slots 102 and threading screw 107 to the threaded inside portion of axle bolt 106. This arrangement allows the front end of chassis 48 to move up and down relative to skate boot 20 thereby absorbing at the front of the skate, shocks and vibrations induced by a rough skating surface. The shaft portion of axle bolt 106 travels inside slots 102 while front mounting brackets 44 slide along the sides of chassis 48. The vertical r...

first embodiment

[0036] As in the first embodiment depicted in FIGS. 1 to 6, the rear or heel portion of outsole 40 is split in two segments including an upper platform 50 and a lower platform 52 which forms a fork-like heel structure. The fork-like heel structure includes an absorption insert 56 made of deformable and elastic material which is sandwiched between upper and lower platforms 50 and 52. Absorption insert 56 acts as a cushioning and vibration absorption device that attenuates the transfer of shocks and vibrations to the skater's heel as previously described.

[0037] In FIG. 7 is shown an alternate embodiment of insert 56 in which its central portion 108 is thinner than its peripheral portion 109 giving insert 56 the general shape of horseshoe. In this configuration, the peripheral portion 109 provides the absorbing action as it expends laterally outwardly and inwardly into central portion 108 under the pressure of a shock or the vibrations of multiple shocks. Peripheral portion 109 may hav...

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Abstract

In-line roller skate comprising a skate boot having an upper for enclosing and supporting a human foot; a chassis carrying a plurality of aligned wheels; and an outsole covering the bottom portion of the upper. The outsole has a heel portion with a cavity and an insert in the cavity for reducing shocks and vibrations transferred from the chassis to the human foot. The skate also comprises a resilient member mounted between the front portion of the skate boot and the front portion of the chassis.

Description

[0001] This application is a divisional application of U.S. patent application Ser. No. 10 / 038,578 filed on Jan. 8, 2002 and claiming priority from Canadian Patent Application 2,330,847 filed on Jan. 12, 2001, the contents of which are hereby incorporated in their entirety by reference.FIELD OF THE INVENTION [0002] The invention relates to an in-line roller skate having a vibration absorption system adapted to reduce the transfer of shocks and vibration induced by the skating surface, from the wheels to the feet of the skater. BACKGROUND OF THE INVENTION [0003] In-line roller skating has become a very popular activity and is practiced as an exercise and a sport, but also as a means for sightseeing or for commuting in general. In-line roller skates are therefore increasingly used on roads and on generally rough or hard surfaces which are often very uncomfortable for the skater as the bumps, cracks and holes of any shape and size induce shocks and vibrations of the wheels which are tr...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): A63C1/00A63C17/26
CPCA43B5/1658A63C2203/20A63C17/262A63C17/06
InventorDUROCHER, JACQUES
OwnerDUROCHER JACQUES