Patent US4993740A successfully refreshed from Google Patents.
US4993740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for forming a ski, and a ski formed according to the process
Assignee: Salomon SAS
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Filing: 1989-03-29
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Granted: 1991-02-19
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Expires: 2009-03-29
Abstract
Abstract A ski having an outer appearance layer constituted by a sheet of thermodeformable material which is heat deformable during a molding process. The sheet of thermodeformable material forming the appearance layer is composed of at least one outer layer of a substantially transparent plastic material and an inner layer made from substantially opaque plastic material. The inner layer contains coloring agents defining a decoration or inscription which is visible from the exterior through the outer layer. The plastic materials forming the sheet of thermodeformable material are such that the melting point and the heat softening temperature of the material forming the outer layer is less than the melting point and the softening temperature of the material forming the outer layer is less than the melting point and the softening temperature of the material forming the inner layer. The molding process is also disclosed for producing such a ski. In the present invention, the inner decoration layer is not substantially deformed during the molding process.
Inventors
- 👤 Gilles Recher
- 👤 Maurice Legrand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:39
CPC Classifications
A; A63; A63C; A63C5/00; A63C5/12; A63C5/124; A63C5/003
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
136 words
A ski comprising: an outer appearance layer comprising a sheet of thermodeformable material which is heat deformable during a molding process, said sheet of thermodeformable material forming said appearance layer being composed of at least one outer layer of a substantially transparent plastic material, having a melting point and a heating softening temperature, and an inner layer made from substantially opaque plastic material, having a melting point and a heat softening temperature, said inner layer containing coloring agents defining a decoration which is visible from the exterior through said outer layer, said plastic materials forming said sheet of thermodeformable material are such that the melting point and the heat softening temperature of the material forming said outer layer is less than the melting point and the heat softening temperature of the material forming said inner layer.
Claim 2
Dependent Claim
136 words
A ski comprising: an outer appearance layer comprising a sheet of thermodeformable material which is heat deformable during a molding process, said sheet of thermodeformable material forming said appearance layer being composed of at least one outer layer of a substantially transparent plastic material, having a melting point and a heating softening temperature, and an inner layer made from substantially opaque plastic material, having a melting point and a heat softening temperature, said inner layer containing coloring agents defining a decoration which is visible from the exterior through said outer layer, said plastic materials forming said sheet of thermodeformable material are such that the melting point and the heat softening temperature of the material forming said outer layer is less than the melting point and the heat softening temperature of the material forming said inner layer.
Claim 3
Dependent Claim
40 words
The ski according to claim 1, wherein said melting point and said softening temperature of said material forming said outer layer and a predetermined molding temperature used to mold said ski have a difference not greater than about 10° C.
Claim 4
Dependent Claim
34 words
The ski according to claim 2, wherein said melting point and said softening temperature of said material forming said inner layer and said predetermined molding temperature have a difference between 15° and 20° C.
Claim 5
Dependent Claim
35 words
The ski according to claim 1, wherein said melting point and said softening temperature of said material forming said inner layer is selected to be not less than about 15° above said predetermined molding temperature.
Claim 6
Dependent Claim
33 words
The ski according to claim 4, wherein said melting point and said softening temperature of said material forming said outer layer is no greater than about 10° C. above said predetermined molding temperature.
Claim 7
Dependent Claim
29 words
The ski according to claim 1, wherein said inner layer comprises a polyamide, and said outer layer is a mixture of polyamide and polyether block-amide of the PEBAX type.
Claim 8
Dependent Claim
57 words
The ski according to claim 1, further comprising an upper surface, two lateral surfaces, and a decoration extending in a substantially continuous manner on said upper surface and on said lateral surfaces of said ski, and wherein said lateral surfaces of said ski are connected to said upper surface of said ski along two relatively sharp edges.
Claim 9
Dependent Claim
18 words
The ski according to claim 1, wherein said outer layer of said ski comprises at least one discontinuity.
Claim 10
Dependent Claim
26 words
The ski according to claim 8, comprising an upper surface having two longitudinal ribs formed by flowing of the material of the outer layer during molding.
Claim 11
Dependent Claim
117 words
A ski comprising an appearance layer made of thermodeformable material which is heat deformable during a molding process, comprising a layer of an at least partially transparent material, having a melting point and a heat softening temperature, and an inner layer made from substantially opaque material, having a melting point and a heat softening temperature, said inner layer containing coloring agents defining a decoration which is visible from the exterior through said partially transparent layer, said materials forming said thermodeformable material are such that the melting point and the heat softening temperature of the material forming said partially transparent layer is less than the melting point and the softening temperature of the material forming said inner layer.
Claim 12
Dependent Claim
117 words
A ski comprising an appearance layer made of thermodeformable material which is heat deformable during a molding process, comprising a layer of an at least partially transparent material, having a melting point and a heat softening temperature, and an inner layer made from substantially opaque material, having a melting point and a heat softening temperature, said inner layer containing coloring agents defining a decoration which is visible from the exterior through said partially transparent layer, said materials forming said thermodeformable material are such that the melting point and the heat softening temperature of the material forming said partially transparent layer is less than the melting point and the softening temperature of the material forming said inner layer.
Claim 13
Dependent Claim
29 words
The ski of claim 10, wherein said inner layer is made of a polyamide, and said partially transparent layer is made of a block copolymer of ether and amide.
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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) | 1994-02-18 | 1994-08-20 | 1995-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-18 | 1998-08-20 | 1999-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-18 | 2002-08-20 | 2003-02-19 | $7700.00 | Window Closed / Lapsed |