Land vehicles – Skates – Shoe attaching means
Patent
1982-01-07
1984-10-16
Mitchell, David M.
Land vehicles
Skates
Shoe attaching means
A63C 918
Patent
active
044771029
DESCRIPTION:
BRIEF SUMMARY
The invention relates to langlauf (cross-country) ski bindings according to the classifying portion of the main claim.
Such cross country ski bindings are marketed in a multiplicity of forms. Before inserting the boot, their tensioning yoke has to be positioned so that the toe of the boot can be brought over the prongs and then lowered. Thereafter, the tensioning yoke can be swung down, usually with the aid of a ski stick, and automatically latched by the locking lever. What is cumbersome is the manipulation of the tensioning yoke to bring it to its readiness position. In most cases, it is necessary for the skier to stoop and handle the tensioning yoke directly.
Conversely, it is necessary with these bindings that, for unlatching the locking lever to release the tensioning yoke, which is normally likewise done with the aid of a ski pole, the boot be raised at the same time to bring the tensioning yoke out of the effective range of the locking lever.
The present invention aims to improve and construct a cross country ski binding of the aforementioned kind so that the tensioning yoke, when not secured in position by the locking lever, will assume such a predetermined erect position that it does not have to be specially manipulated either for introducing the toe of the boot in the binding or for bringing the tensioning yoke into its closed position with the aid of a ski pole. Conversely, the tensioning yoke should, after release by the locking lever, automatically return to its readiness position.
Accordingly, based on a cross country ski binding comprising a tensioning yoke for engaging over the front upper edge of the boot sole to secure the toe of the boot against lifting off a base plate which is to be fixed to the ski and is provided with upright prongs for engaging in appropriate holes in the underface of the sole of the boot, the tensioning yoke being mounted in side flanges of the base plate and being secured in the closed position by a spring-biassed locking lever, this is achieved according to the invention in that the tensioning yoke is under the influence of a spring force which seeks to hold it in the open position.
In a constructional embodiment of the invention, the tensioning yoke, which is pivoted in known manner to the side flanges, can be subjected to a spring force.
In most cases, the tensioning yoke is formed from a piece of wire bent into substantially U shape. According to the present invention, at least one of the arms of the tensioning yoke that is pivotably mounted in the side flanges can in that case co-operate with a run-up cam at the associated side flange for elastically deforming the arm during pivoting to the closed position. In a particular form of this constructional variation, the run-up cam may be formed on a bearing bushing inserted in the side flange.
If both arms of the tensioning yoke co-operate with a respective run-up cam, it has proved desirable for each run-up cam to be extended by a second cam branch to form a latching catch. In particular, this offers a manufacturing advantage because it makes it unnecessary to provide different run-up cam members for the side flanges.
In a particular form of the invention, at least one arm of the tensioning yoke can be fixed in the associated side flange against rotation so that, starting with the open position, the arm is elastically deformed during swinging to the closed position.
An example of the invention will hereinafter be described in more detail with reference to the accompanying drawing, in which:
FIG. 1 is a plan view of the cross country ski binding, and
FIG. 2 is a section on line II--II in FIG. 1.
The cross country ski binding comprises a base plate 1 with screw holes 2 for screwing onto a ski shown in chain-dotted lines. A bearing bushing 5 is provided in each of side flanges 3, 4 extending from the base plate. The outwardly flanged free ends of arms 7, 8 of a tensioning yoke 6 engage in the bearing bushings. The tensioning yoke comprises a piece of bent wire having a web or crosspiece which is formed with a centra
REFERENCES:
patent: 1702330 (1929-02-01), With
patent: 1868386 (1932-07-01), Gresvig
patent: 2450514 (1948-08-01), Humlegard
patent: 2469478 (1949-05-01), Ruud
patent: 3861700 (1975-01-01), Fredriksen
patent: 4093269 (1978-06-01), Hoffman
Knabel Walter
Messerschmidt Werner
Marker-Patentverwertungsgesellschaft
Mitchell David M.
LandOfFree
Cross country ski binding does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cross country ski binding, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cross country ski binding will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1943220