US3909023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety ski binding
Assignee: Heinrich Wunder GmbH and Co KG
•
Filing: 1974-07-12
•
Granted: 1975-09-30
•
Expires: 1994-07-12
Abstract
Abstract A ski binding holding and release mechanism for engaging the sole and/or heel of a ski boot includes a sole hold-down device which occupies one of two stable positions corresponding to the open and closed conditions, respectively, of the release mechanism. These stable positions are associated with the extrema of a spring loaded knee-joint which snaps from one position to the other. A pivoting tab connects the knee-joint to the sole hold-down device through a pin and slot mechanism. The form of the slot is so designed that the force bearing on the sole holddown device during the process of opening the release mechanism can change in a desired manner; in particular, it may remain constant during the initial portion of the opening process.
Inventors
- 👤 Reinhold Zoor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:17
CPC Classifications
A; A63; A63C; A63C9/00; A63C9/08; A63C9/084; A63C9/0847; A63C9/0841; A63C9/0842; A63C9/0846; A63C9/005; A63C9/0805
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
174 words
A safety ski binding, comprising, in combination: a. a housing adapted to be affixed to a base plate; b. means defining a first pivotal axis, attached to said housing and extending transversely to the longitudinal direction of said housing; c. a sole hold-down device mounted for movement about the first pivotal axis, and including a laterally protruding pin; and d. a release mechanism including means defining a second pivotal axis, attached to said housing substantially parallel to and below said first pivotal axis, a pivot tab means mounted for movement about said second pivotal axis, said tab including two lever arms, one of which contains an opening, and a spring, pivotably mounted on said housing, one end of said spring engaging one of said lever arms so as to form a knee-joint and the opening within the other of said lever arms being engaged by said laterally protruding pin; whereby said sole hold-down device can move between two springloaded, stable angular positions, corresponding to an open and a closed condition of the release mechanism.
Claim 2
Dependent Claim
174 words
A safety ski binding, comprising, in combination: a. a housing adapted to be affixed to a base plate; b. means defining a first pivotal axis, attached to said housing and extending transversely to the longitudinal direction of said housing; c. a sole hold-down device mounted for movement about the first pivotal axis, and including a laterally protruding pin; and d. a release mechanism including means defining a second pivotal axis, attached to said housing substantially parallel to and below said first pivotal axis, a pivot tab means mounted for movement about said second pivotal axis, said tab including two lever arms, one of which contains an opening, and a spring, pivotably mounted on said housing, one end of said spring engaging one of said lever arms so as to form a knee-joint and the opening within the other of said lever arms being engaged by said laterally protruding pin; whereby said sole hold-down device can move between two springloaded, stable angular positions, corresponding to an open and a closed condition of the release mechanism.
Claim 3
Dependent Claim
122 words
A safety ski binding as defined in claim 1, wherein said means defining the first pivotal axis and said means defining the second pivotal axis are so located in said housing, and said protruding pin and said opening are so located with respect to the pivotal axes that the circularly arcuate track of said pin about the first pivotal axis and the circularly arcuate track described by that point of the opening nearest the second pivotal axis about the second pivotal axis diverge from one another during opening motion of said release mechanism while said protruding pin continuously recedes from the second pivotal axis, whereas, during the closing motion of said release mechanism, said protruding pin continuously approaches said second pivotal axis.
Claim 4
Dependent Claim
62 words
A safety ski binding as defined in claim 2, wherein the radius of curvature of the circularly arcuate track followed by the protruding pin is greater than the radius of curvature of the circularly arcuate track followed by the point of the opening in the pivot tab lying nearest the second pivotal axis, whereas both tracks are cured in the same sense.
Claim 5
Dependent Claim
25 words
A safety ski binding as defined in claim 2, wherein said first and second pivotal axes extend transversely to the longitudinal exteNt of the ski.
Claim 6
Dependent Claim
77 words
A safety ski binding as defined in claim 2, wherein said opening in the pivot tab is a slot comprising a first region adjacent to the second pivotal axis and a second region adjoining said first region and inclined thereto in such a way that the motion of the protruding pin in the second region and hence also the motion of the sole hold-down device is accelerated while the pivotal motion of the pivot tab remains constant.
Claim 7
Dependent Claim
98 words
A safety ski binding as defined in claim 5, wherein the power-arm of the pivot tab, defined as the distance between the second pivotal axis and the point of attack of the spring and the load-arm of the pivot tab, defined as the variable distance between the second pivotal axis and the center of the protruding pin, are so related that the ratio of the power-arm to the load-arm is preferably approximately 2:1 in the closed condition of the release mechanism and changes continuously to a value of approximately 1:1 in the open condition of the released mechanism.
Claim 8
Dependent Claim
49 words
A safety ski binding as defined in claim 6, wherein the second pivotal axis lies at a smaller perpendicular distance from the surface of the ski than the first pivotal axis and lies nearer to the heel of a normally placed ski boot than does the first pivotal axis.
Claim 9
Dependent Claim
72 words
A safety ski binding as defined in claim 7, wherein the spring is supported within the housing at approximately the same perpendicular distance from the ski as the location of the second pivotal axis and wherein, in the closed condition of the release mechanism, the load arm of the pivot tab points obliquely downwardly and the longitudinal axis of the spring points obliquely upward from the point of support on the housing.
Claim 10
Dependent Claim
44 words
A safety ski binding as defined in claim 1, the combination further comprising a two armed release lever pivotably mounted in the housing, whose first lever arm engages the pivot tab means and whose second lever arm is preferably provided with a pulling means.
Claim 11
Dependent Claim
20 words
A safety ski binding as defined in claim 9, wherein said second lever arm is a part of the housing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |