Land vehicles – Skates – Shoe attaching means
Patent
1985-12-03
1987-02-03
Love, John J.
Land vehicles
Skates
Shoe attaching means
411337, 411352, 411999, F16B 3900
Patent
active
046405240
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to ski bindings, and in particular to a ski binding wherein one structural member is attachable to another member by means of a screw which is inserted into a screw hole, wherein means are provided for preventing the screw from falling out of the one member prior to the securing of the screw in both members.
Known devices of this kind make use of a resilient spring element which is mounted on the structural members and extends parallel to the screw hole. Leaf springs are often used for this purpose. The area in which these known devices may be used is rather limited and depends largely on the shape of the structural members inasmuch as the spring element has to project with respect to the head of the screw in relation to the final position of the screw which is screwed into the object in question.
SUMMARY OF THE INVENTION
An object of the invention is to provide an improved ski binding having one member attachable to another member by a screw, wherein the screw is retained in the one member.
Another object is to provide a screw receiving member which prevents the inadvertent withdrawal of a screw from the member.
A further object is to provide a ski binding having first and second members attachable by a screw, wherein means are provided in the first member for retaining the screw in place in an economical, effective and efficient manner.
To achieve these objects, the invention in its preferred forms provide for a hole or bore adapted to receive the head of the screw, this hole being provided at its entrance end with tongue shaped resilient projections. These projections extend from an outer wall defining the bore into the perimeter of an imaginary inner circle, the diameter of which is somewhat smaller than the diameter of the head of the screw. In other words, the projections extends into the projected area of a screw head in the bore. When using a certain amount of pressure it is possible to pass the head of the screw by the elastic resilient projections and into said hole with the consequence that it cannot fall out of the hole prior to mounting on said structural member. In this condition prior to mounting the screw is movable in a longitudinal direction to a larger or lesser degree depending on the depth of the hole.
In accordance with a modification of the invention, the projections are arranged in one of two members having a hole coaxial a screw hole in the second member. The one member is supported on the upper side of the second member. This design is particularly preferable if the structural members have the shape of a plate.
In accordance with another embodiment which is particularly applicable when the hole receiving the head of the screw is deeper than the length of the head, a second row of corresponding resilient projections is provided below the first row. A distance is provided between the two rows, so that the two sets of projections are longitudinally spaced from each other by at least the length of the head of the screw. By this construction, the longitudinal movement of the screw within the structural member prior to its mounting is avoided. Particularly for reason of manufacture it is desirable to offset the projection of the second row with respect to the projections of the first row in a circumferential direction.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other objects and advantages of the present invention will be disclosed in conjunction with the accompanying drawings in which:
FIG. 1 is a partial plan view of a preferred embodiment of the invention;
FIG. 2 is a sectional view along line II--II in FIG. 1;
FIG. 3 is a plan view similar to the plan view of FIG. 1 showing a second embodiment of the invention; and
FIG. 4 is a sectional view along line IV--IV in FIG. 3.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
The two embodiments shown relate to a base plate 1 and 2 respectively of a ski binding part of any kind. Therefore, the entire ski binding part is not shown. The base plates are intended to be fixedly mounted by mean
REFERENCES:
patent: 3561075 (1971-02-01), Selinko
Hochberg D. Peter
Love John J.
Mar Michael
Marker International
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