Land vehicles – Skates – Shoe attaching means
Patent
1994-10-14
1996-10-22
Johnson, Brian L.
Land vehicles
Skates
Shoe attaching means
280630, 280634, A63C 9085
Patent
active
055669670
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a front jaw for a safety binding comprising a housing adapted to be fastened onto a ski, the housing having a lower part and an upper part, at least one adjustable release spring and two essentially horizontally swingable sole holders arranged in the upper part of the housing, which sole holders are supported on a common, essentially vertically oriented bolt which is loaded by the release spring and is guided in the housing.
BACKGROUND OF THE INVENTION
A front jaw of the abovementioned type has become know, for example, from AT 376 576 and its corresponding U.S. Pat. No. 4,478,426. The sole holders in this known front jaw are supported on a common bolt which is loaded by the release spring through a pull rod, the pull rod being movably guided in a bore provided in the housing and extending in a longitudinal direction.
Furthermore, a front jaw with diagonal release capability is already known from an Austrian patent application of the Applicant with the reference AT-PS 396 337 and its corresponding U.S. Pat. No. 5,333,891. The sole holders are pivotally supported on a bearing block in such a front jaw, which bearing block is supported and guided on the housing. The sole holders are loaded through a center opening in this bearing block through a release plate by the spring force of the release spring. The bearing block is furthermore guided at its lower end by a recess and a wedge-shaped projection received therein so that the bearing block, after moving through a predetermined release path, can also swing-out laterally, thus enabling a diagonal release of the front jaw.
SUMMARY OF THE INVENTION
A purpose of the invention is to provide a diagonal release in addition to a lateral and rearward release also possible in a conventional front jaw of the abovementioned type.
One purpose of the invention is in particular to find an arrangement which is as simple and inexpensive as possible, and which enables such a diagonal release.
This is accomplished according to the invention by means of a front jaw of the above-mentioned type in which the bolt is movably guidably arranged along a guide surface aligned in longitudinal direction and enlarging rearwardly, which guide surface is provided in a centrally oriented guide plate arranged in the upper part of the housing, and which is associated with the lower end section of the bolt. The bolt is, during a diagonal release, guided first rearwardly in a longitudinal direction and thereafter swings out laterally, after following a predetermined release path, caused by the application of a diagonal force and the widening of the guide surface, thus enabling a release of the ski shoe in an upwardly inclined direction for a diagonal release. An advantageous combination of the diagonal release with the other release operations (lateral, rearward release) is thereby also achieved, with the sole holders, the bolt and the release spring being already premounted in the upper part of the housing.
The solution of the invention is realized advantageously in such a manner that the guide surface is designed as an elongated slot having a rounded area at its front end and a tapered enlargement at its rear end.
From the design of the disclosed exemplary embodiment, the bolt, in an advantageous manner, and in the skiing position of use of the front jaw, is guidedly supported on a first and/or second guide-surface section and in the swung-out state of at least one sole holder either on the second or on a third guide-surface section of the guide surface, with the first guide-surface section being designed as a straight section of the elongated slot and the third guide-surface section as the boundary walls of a tapered enlargement.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be discussed in greater detail hereinafter in connection with the accompanying drawings, in which:
FIG. 1 is a cross-sectional view of a front jaw of the invention in its position of use,
FIG. 2 is a partially cross-sectioned top view of the front jaw accord
REFERENCES:
patent: 4478426 (1984-10-01), Scheck
patent: 4735434 (1988-04-01), Sedlmair
patent: 4834414 (1989-05-01), Sedlmair
patent: 4974869 (1990-12-01), Muhlberger et al.
patent: 5333891 (1994-08-01), Stritzl et al.
Janisch Andreas
Stritzl Karl
Wladar Helmut
Wuerthner Hubert
HTM Sport-Und Freizeitgeraete Aktiengesellschaft
Johnson Brian L.
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