US3698731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multilayer ski and method for the fabrication thereof
Assignee: Semperit AG Holding
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Filing: 1969-12-09
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Granted: 1972-10-17
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Expires: 1989-12-09
Abstract
Abstract There is disclosed a multilayered ski construction which contains at least one strip-, band- or similar shaped insert member and/or support member formed of a preferably cross-linked, elastomeric plastic material, which possesses a relative dampening of at least 8 percent, preferably 10 percent (measured in accordance with the flexural wave technique at 100 Hz). The invention also relates to the method of fabrication of such ski or the like.
Inventors
- 👤 Wolf-Dieter Jost
- 👤 Karl-Gunter Moritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:57
CPC Classifications
A; A63; A63C; A63C5/00; A63C5/12; A63C5/122; A63C5/04; A63C5/056; A63C5/06; A63C5/07; A63C5/126
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
52 words
A multilayered ski comprising at least one member formed of an elastomeric plastic material which possesses a relative dampening of at least 8 percent (measured in accordance with the flexural wave technique at 100 Hz), and wherein the layers of said ski are elastically preloaded and completely encased by the dampening material.
Claim 2
Dependent Claim
52 words
A multilayered ski comprising at least one member formed of an elastomeric plastic material which possesses a relative dampening of at least 8 percent (measured in accordance with the flexural wave technique at 100 Hz), and wherein the layers of said ski are elastically preloaded and completely encased by the dampening material.
Claim 3
Dependent Claim
18 words
A multilayered ski as defined in claim 1, wherein said relative dampening is preferably at least 10 percent.
Claim 4
Dependent Claim
16 words
A multilayered ski as defined in claim 1, wherein said elastomeric plastic material is preferably cross-linked.
Claim 5
Dependent Claim
16 words
A multilayered ski as defined in claim 1, wherein said one member is an insert member.
Claim 6
Dependent Claim
16 words
A multilayered ski as defined in claim 1, wherein said one member is a support member.
Claim 7
Dependent Claim
24 words
A multilayered ski as defined in claim 1, wherein said ski layers are selected from the group comprising glass fiber reinforced plastic and aluminum.
Claim 8
Dependent Claim
18 words
A multilayered ski as defined in claim 1, wherein said dampening material is a highly filled rubber mixture.
Claim 9
Dependent Claim
17 words
A multilayered ski as defined in claim 1, wherein said dampening material is a semi-rigid polyurethane elastomer.
Claim 10
Dependent Claim
57 words
A multilayered ski comprising at least one member formed of an elastomeric plastic material which possesses a relative dampening of at least 8 percent (measured in accordance with the flexural wave technique at 100 Hz), and wherein said at least one member of said ski comprises a runner surface possessing a coating formed of said dampening material.
Claim 11
Dependent Claim
57 words
A multilayered ski comprising at least one member formed of an elastomeric plastic material which possesses a relative dampening of at least 8 percent (measured in accordance with the flexural wave technique at 100 Hz), and wherein said at least one member of said ski comprises a runner surface possessing a coating formed of said dampening material.
Claim 12
Dependent Claim
17 words
A multilayered ski as defined in claim 9, which possesses a core formed as said dampening material.
Claim 13
Dependent Claim
15 words
A multilayered ski as defined in claim 10, wherein said core is a profiled member.
Claim 14
Dependent Claim
19 words
A multilayered ski as defined in claim 11, wherein said profiled member is equipped with recesses at its underside.
Claim 15
Dependent Claim
24 words
A multilayered ski as defined in claim 9, wherein said dampening material contains approximately 5 percent to 50 percent by weight of a polyolefin.
Claim 16
Dependent Claim
21 words
A multilayered ski as defined in claim 13, wherein said polyolefin is preferably approximately 10 percent to 20 percent by weight.
Claim 17
Dependent Claim
14 words
A multilayered ski as defined in claim 13, wherein said dampening material contains polyethylene.
Claim 18
Dependent Claim
17 words
A multilayered ski as defined in claim 15, wherein said polyethylene preferably possesses a low melting point.
Claim 19
Dependent Claim
17 words
A multilayered ski as defined in claim 9, wherein said dampening material is a semi-rigid polyurethane elastomer.
Claim 20
Dependent Claim
50 words
A multilayered ski comprising at least one member formed of an elastomeric plastic material which possesses a relative dampening of at least 8 percent (measured in accordance with the flexural wave technique at 100 Hz), and wherein said at least one member comprises side edges formed of said dampening material.
Claim 21
Dependent Claim
50 words
A multilayered ski comprising at least one member formed of an elastomeric plastic material which possesses a relative dampening of at least 8 percent (measured in accordance with the flexural wave technique at 100 Hz), and wherein said at least one member comprises side edges formed of said dampening material.
Claim 22
Dependent Claim
17 words
A multilayered ski as defined in claim 18, wherein said dampening material is a semi-rigiD polyurethane elastomer.
Claim 23
Dependent Claim
50 words
A multilayered ski comprising at least one member formed of an elastomeric plastic material which possesses a relative dampening of at least 8 percent (measured in accordance with the flexural wave technique at 100 Hz), and wherein said dampening material possesses additives for improving the sliding properties of the ski.
Claim 24
Dependent Claim
50 words
A multilayered ski comprising at least one member formed of an elastomeric plastic material which possesses a relative dampening of at least 8 percent (measured in accordance with the flexural wave technique at 100 Hz), and wherein said dampening material possesses additives for improving the sliding properties of the ski.
Claim 25
Dependent Claim
23 words
A multilayered ski as defined in claim 20, wherein said additives are selected from the group comprising silicone, powdered graphite, and molybdenum sulfide.
Claim 26
Dependent Claim
17 words
A multilayered ski as defined in claim 20, wherein said dampening material is a semi-rigid polyurethane elastomer.
Claim 27
Dependent Claim
52 words
A multilayered ski comprising at least one member formed of an elastomeric plastic material which possesses a relative dampening of at least 8 percent (measured in accordance with the flexural wave technique at 100 Hz), and wherein the surface of said dampening material is treated so as to possess good sliding properties.
Claim 28
Dependent Claim
52 words
A multilayered ski comprising at least one member formed of an elastomeric plastic material which possesses a relative dampening of at least 8 percent (measured in accordance with the flexural wave technique at 100 Hz), and wherein the surface of said dampening material is treated so as to possess good sliding properties.
Claim 29
Dependent Claim
17 words
A multilayered ski as defined in claim 23, wherein said dampening material is a semi-rigid polyurethane elastomer.
Claim 30
Dependent Claim
51 words
A multilayered ski comprising at least one member formed of an elastomeric plastic material which possesses a relative dampening of at least 8 percent (measured in accordance with the flexural wave technique at 100 Hz), and wherein good sliding properties are imparted to the surface of said dampening material by fluorination.
Claim 31
Dependent Claim
51 words
A multilayered ski comprising at least one member formed of an elastomeric plastic material which possesses a relative dampening of at least 8 percent (measured in accordance with the flexural wave technique at 100 Hz), and wherein good sliding properties are imparted to the surface of said dampening material by fluorination.
Claim 32
Dependent Claim
17 words
A multilayered ski as defined in claim 25, wherein said dampening material is a semi-rigid polyurethane elastomer.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |