Land vehicles – Skates – Runner type
Patent
1988-01-06
1989-11-07
Marmor, Charles A.
Land vehicles
Skates
Runner type
A63C 710
Patent
active
048786870
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a ski brake having a bail and two wire brake-arms.
A ski brake of this type is illustratively and approximately described in Austrian Pat. No. 374,114. While this document per se discloses a brake system consisting of several integral and repeatedly bent single bails of spring wire, the possibility of making the brake system into a two-part bail, of which the individual parts also are per se bent several times, also is disclosed therein. An approximtely cross-sectionally V-shaped recess is provided, to pivot and retract the two wire brake-arms, at the actuation pedal, which extends in the longitudinal direction of the brake system and of which the height corresponds approximtely to the wire diameter. While thereby the two wire brake arms are retracted within the ski contour in the last phase of the actuation-pedal depression, the excursion of the in-pivoting motion on the other hand is restricted by the wire size. As a result, the application of the known ski brake is restricted to a system which is directly on one ski.
SUMMARY OF THE INVENTION
The object of the invention is to further develop a ski brake of the initially cited kind so that the brake can pivot-in farther and accordingly shall be fully effective when used together with a pivot or a touring plate.
This and other objects are achieved by providing a ski brake wherein two wire brake-arms are allowed a large mutual pivoting motion because their individual and facing segments hold a connecting spring. Because the individual wire brake-arms pivot in or out against the force of this connecting spring which is apart from the erection spring, the designer is offered a larger selection regarding the sizing of the spring force to swing up the brake system and to retract it than if the retraction had to take place against the spring force stored in the wire material itself, as is the case in the single spring wire. Because the connecting spring rests against the front limit wall of a passage of the actuation pedal, the pivoting parts of the ski brake become additionally stable. This stability is further enhanced in that two erection springs are used which keep the connecting spring in position at the base plate. As a result, the advantage of simple assembly of the brake system is obtained.
Per se, the step of so linking a single-part spring-wire bail to an actuation pedal that the cross rod of the spring-wire bail at least passes through one guide of the actuation pedal is known from Austrian Pat. No. 372,286. However, in this known solution, the retraction of the individual wire brake-arms is performed by a linkage system consisting of bearing brackets pivotably mounted on the base plate and wherein, as considered from the ready position of the brake system, wire segments transverse to the ski longitudinal direction are resting which simultaneously form the pivot spindle of the brake system. To this extent this known solution is remote from the one already considered.
Again the step is known to mount the connecting spring to mutually facing wire brake-arms. One of the earliest of such solutions is described in Austrial Pat. No. 360,892. This known solution employs a wedge rising from the base plate and spreading apart the wire-brake arms, when the brake system is rotated down, against the force of the connecting spring, so that the two brake spindles above the ski topside and within the ski come to rest.
A similar solution is disclosed in the European Patent Publication No. B 0 045 698. However in this known solution the connecting spring of the two wire brake-arms is a leaf spring rigidly joined to the actuation pedal. As a result, upon every depression and upward swing of the brake system, the leaf spring is additionally stressed by torsion. In this design the erection member is tensile and forms such an angle with the leaf spring that it bends the latter. No features of the ski brake of the present invention can be inferred from this known solution.
German Offenlegungsschrift No. 31 36 079 als
REFERENCES:
patent: 4124223 (1978-11-01), Kubelka
patent: 4383699 (1983-05-01), Beyl
patent: 4403788 (1983-09-01), Bernard et al.
patent: 4463967 (1984-08-01), Klubitschiko
patent: 4537418 (1985-08-01), Knabel et al.
Freisinger Henry
Luschnig Franz
Riegler Andreas
Stritzl Karl
Wurthner Hubert
Finlay Tamara L.
Marmor Charles A.
TMC Corporation
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