US3774922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ski binding
Assignee: Gertsch AG
•
Filing: 1972-02-07
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Granted: 1973-11-27
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Expires: 1992-02-07
Abstract
Abstract Safety ski binding with magnetic release assisting means. A permanent magnet is fixed to one portion of a releaseable ski binding and an electromagnet is affixed to another portion thereof, which other portion moves away from the first portion during a release operation. Thus so long as the electromagnet is de-energized the permanent magnet operates thereagainst and holds the ski binding closed. However upon energization of the electromagnet, same is energized at such polarity as to repell the poles of the permanent magnet and the ski binding is permitted to open. Energization of the electromagnet may be by the conscious closure of a switch by the user, by remote control such as radio, or by sensing the bio-electro circuits of the leg muscles of the user when same are subjected to tension to initiate closure of such switch.
Inventors
- 👤 T Smolka
- 👤 G Schweizer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:53
CPC Classifications
A; A63; A63C; A63C9/00; A63C9/08; A63C9/088; A63C9/0885
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
213 words
In a releasable ski binding for holding a ski boot on a ski, said releasable ski binding having a base secured to said ski, a ski boot engaging member supported for movement toward and away from said ski boot and a permanent magnet secured to at least one of said base and said ski boot engaging member for normally holding said ski boot engaging member in engagement with said ski boot, the improvement comprising: means defining an electromagnet secured to the other of said base and said ski boot engaging member and electrical power source means for supplying electrical power thereto, said electromagnet generating first a magnetic pole upon having said electrical power supplied thereto, said permanent magnet having a second magnetic pole of the same polarity as said first magnetic pole, said permanent magnet being magnetically coupled to said electromagnet means when said electromagnet means is unenergized; and switching means for selectively controlling the supply of said electrical power to said electromagnet means, said switching means, when effecting an energization of said electromagnet means, effecting a generation of said first magnetic pole to effect a positive repelling or separating of said permanent magnet from said electrogmagnet means and a release of said ski boot engaging member from engagement with said ski boot.
Claim 2
Dependent Claim
213 words
In a releasable ski binding for holding a ski boot on a ski, said releasable ski binding having a base secured to said ski, a ski boot engaging member supported for movement toward and away from said ski boot and a permanent magnet secured to at least one of said base and said ski boot engaging member for normally holding said ski boot engaging member in engagement with said ski boot, the improvement comprising: means defining an electromagnet secured to the other of said base and said ski boot engaging member and electrical power source means for supplying electrical power thereto, said electromagnet generating first a magnetic pole upon having said electrical power supplied thereto, said permanent magnet having a second magnetic pole of the same polarity as said first magnetic pole, said permanent magnet being magnetically coupled to said electromagnet means when said electromagnet means is unenergized; and switching means for selectively controlling the supply of said electrical power to said electromagnet means, said switching means, when effecting an energization of said electromagnet means, effecting a generation of said first magnetic pole to effect a positive repelling or separating of said permanent magnet from said electrogmagnet means and a release of said ski boot engaging member from engagement with said ski boot.
Claim 3
Dependent Claim
15 words
The improvement according to claim 1, wherein said electromagnet means is secured to said base.
Claim 4
Dependent Claim
33 words
The Improvement according to claim 1, wherein said power source means is a battery; and wherein said switching means comprises a normally open switch for electrically connecting said battery to said electromagnet means.
Claim 5
Dependent Claim
45 words
The improvement according to claim 1, wherein said switching means comprises a transmitter for generating an electrical signal in response to a fall condition and receiver means responsive to said signal to effect an electrical connection of said power source means to said electrogmagnet means.
Claim 6
Dependent Claim
26 words
The improvement according to claim 1, wherein said permanent magnet and said electromagnet means both have pole faces; and wherein said pole faces engage each other.
Claim 7
Dependent Claim
35 words
The improvement according to claim 1, wherein said ski boot engaging member includes first means for pivotally securing same to said ski about a generally horizontal axis transverse of the longitudinal axis of said ski.
Claim 8
Dependent Claim
28 words
The improvement according to claim 6, wherein said ski boot engaging member includes second means for slidably supporting same for movement relative to said ski and parallel thereto.
Claim 9
Dependent Claim
62 words
The improvement according to claim 1, wherein said ski boot engaging member includes first means for pivotally securing same to said ski about a generally vertical axis and second means for slidably supporting said ski boot engaging member for movement relative to said ski and parallel thereto to facilitate said separating movement between said ski boot engaging member and said permanent magnet.
Claim 10
Dependent Claim
40 words
The improvement according to claim 1, including adjustment means for adjusting the position of said permanent magnet relative to said electromagnet means to facilitate an adjustment of the holding force between said permanent magnet and said ski boot engaging member.
References Cited (Backward Citations)
US2253252A
Cited
US3353835A
Cited
US3246907A
Cited
US3318610A
Cited
US3367672A
Cited
US3528672A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |