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Patent US4484761A successfully refreshed from Google Patents.
US4484761A
Expired / Lapsed
US
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Magnetic release system for safety ski bindings
Assignee: Marker International GmbH
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Filing: 1982-07-13
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Granted: 1984-11-27
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Expires: 2002-07-13
Abstract
Abstract A magnetic release system of a safety ski binding having a permanent magnet, a release mechanism, a core disposed between the magnet and release mechanism in which a temporary magnetic field may be induced, an electromagnet coil associated with the core for cancelling or diminishing the magnetic field induced in the core by the magnet, and a spring biasing the release mechanism from a non-actuating to an actuating position.
Inventors
- 👤 Walter Knabel
- 👤 Gerd Klubitschko
- 👤 Lorenz Stempfhuber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:47
CPC Classifications
A; A63; A63C; A63C9/00; A63C9/08; A63C9/0802; H; H01; H01F; H01F7/00; H01F7/02; H01F7/04; H01F7/06; H01F7/08; H01F7/14; H01F7/121; H01F7/124; Y; Y10; Y10T; Y10T292/00; Y10T292/11
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
278 words
A magnetic release system for safety ski bindings for releasing a ski boot holding mechanism from a latching to an unlatching position on receipt of an electrical signal, said magnetic release system comprising; a permanent magnet; release means capable of movement relative to said permanent magnet between an actuating and a non-actuating position for actuating a ski boot holding mechanism from a latching to an unlatching position; temporary magnetic means including at least one core fixedly secured to said permanent magnet for magnetically retaining said release means in said non-actuating position; wherein said permanent magnet induces a temporary magnetic field in said temporary magnetic means; electro-magnetic means fixedly secured to said temporary magnetic means for inducing a magnetic field in said temporary magnetic means on receipt of an electrical impulse; said magnetic field induced by said electro-magnet opposing said magnetic field induced by said permanent magnet; said magnetic field induced by said electro-magnet in said temporary magnetic means thereby diminishing said magnetic field induced by said permanent magnet in said temporary magnetic means; spring means, biasing said release means from said non-actuating to said actuating position, for forcing said release means from said non-actuating to said actuating position when said electro-magnetic means diminishes the magnetic field induced by said permanent magnet in said temporary magnetic means, and guide means for guiding said release means from said non-actuating to said actuating position, said guide means including an opening in said release means, a pin on said core for entering said opening, and a pivot axis about which said release means is pivotally movable from its non-actuating to its actuating position, wherein said release means reciprocates relative to said pin.
Claim 2
Dependent Claim
278 words
A magnetic release system for safety ski bindings for releasing a ski boot holding mechanism from a latching to an unlatching position on receipt of an electrical signal, said magnetic release system comprising; a permanent magnet; release means capable of movement relative to said permanent magnet between an actuating and a non-actuating position for actuating a ski boot holding mechanism from a latching to an unlatching position; temporary magnetic means including at least one core fixedly secured to said permanent magnet for magnetically retaining said release means in said non-actuating position; wherein said permanent magnet induces a temporary magnetic field in said temporary magnetic means; electro-magnetic means fixedly secured to said temporary magnetic means for inducing a magnetic field in said temporary magnetic means on receipt of an electrical impulse; said magnetic field induced by said electro-magnet opposing said magnetic field induced by said permanent magnet; said magnetic field induced by said electro-magnet in said temporary magnetic means thereby diminishing said magnetic field induced by said permanent magnet in said temporary magnetic means; spring means, biasing said release means from said non-actuating to said actuating position, for forcing said release means from said non-actuating to said actuating position when said electro-magnetic means diminishes the magnetic field induced by said permanent magnet in said temporary magnetic means, and guide means for guiding said release means from said non-actuating to said actuating position, said guide means including an opening in said release means, a pin on said core for entering said opening, and a pivot axis about which said release means is pivotally movable from its non-actuating to its actuating position, wherein said release means reciprocates relative to said pin.
Claim 3
Dependent Claim
42 words
A magnetic release system according to claim 1, wherein said electromagnetic means comprises said core and a coil of electrical conducting material associated with said core; said coil inducing an electromagnetic field in said core when said coil receives an electrical impulse.
Claim 4
Dependent Claim
18 words
A magnetic release system according to claim 1 wherein said pivot axis comprises an edge of said core.
Claim 5
Dependent Claim
16 words
A magnetic release system according to claim 1, wherein said release means comprises a release arm.
Claim 6
Dependent Claim
28 words
A magnetic release system according to claim 4 wherein said spring means comprises a screw tension spring biasing said release arm from said non-actuating to said actuating position.
Claim 7
Dependent Claim
29 words
A magnetic release system according to claim 4 wherein the mass of said release arm is less than the combined masses of said permanent magnet and said electromagnetic means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-27 | 1988-05-28 | 1988-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-27 | 1992-05-28 | 1992-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-27 | 1996-05-28 | 1996-11-27 | $7700.00 | Window Closed / Lapsed |