Back to results
US 5,294,139 AGranted
Ski
AssigneeSalomon S.A.
InventorsJean-Mary Cazaillon, Bernard Chatellard
Life of this patent
Estimating the term…
Abstract
A ski having a composite structure. The ski includes a first element, a second element, an injected core positioned between the first element and the second element, with a polymer film positioned between the injected core and at least one of the first element and the second element, which is in contact with the film through a reinforcement component. The ski is produced by a process of providing on the internal surface of the first and/or second elements a solid compatibilizer film. The film forms an interface between an injected foam and the first and/or second elements to promote adherence.
Claims21
A ski produced by a process comprising the steps of:
- injecting constituents of a hardenable foam;
- expanding and hardening the hardenable foam, between at least a first element and a second element, said first element being formed by a process comprising the steps of:
- providing a solid polymer base film having good adhesion properties with the hardenable foam during the ultimate injection step;
- providing said first element in the form of a substrate having an internal surface formed by a reinforcement, said reinforcement comprising a member selected from the group consisting of:
- (1) a textile reinforcement sheet pre-impregnated with a member selected from the group consisting of:
- thermosetting resin and thermoplastic resin;
- and (2) a metallic reinforcement;
- positioning said solid film on said internal surface of said first element to cover said reinforcement;
- hot forming under pressure said solid film and said first element, after said step of positioning said solid film on said internal surface of said first element, to make said film adhere to said first element;
- and
- whereby during said injection step said solid film constitutes a screen between the hardenable foam and the reinforcement and, after injection and hardening said foam adheres perfectly to said film.
8 more elements
A ski manufactured by a process comprising the steps of:
- providing a solid polymer film having good adhesion properties with a hardenable foam;
- providing a first element in the form of a substrate having an internal surface formed by a reinforcement, said reinforcement comprising a textile reinforcement sheet pre-impregnated with a thermosetting resin;
- positioning said solid polymer film on said internal surface of said first element to cover said reinforcement;
- placing said film and said first element in a mold;
- closing said mold and hot forming under pressure said film and said first element to make said film adhere to said first element;
- and
- injecting said hardenable foam into said mold, whereby said solid film screens the hardenable foam from the reinforcement and said foam, after injection and hardening, adheres securely to said solid film.
4 more elements
A ski manufactured by a process comprising the steps of:
- providing a solid polymer film having good adhesion properties with a hardenable foam;
- providing a first element in the form of a substrate having an internal surface formed by a reinforcement, said reinforcement comprising a metallic reinforcement;
- positioning said solid polymer film on said internal surface of said first element to cover said reinforcement;
- placing said film and said first element in a mold;
- closing said mold and hot forming under pressure said film and said first element to make said film adhere to said first element;
- and
- injecting said hardenable foam into said mold, whereby said solid film screens the hardenable foam from the reinforcement and said foam, after injection and hardening, adheres securely to said solid film.
4 more elements
A ski having a composite structure comprising:
- a first element;
- a second element;
- an injected core positioned between said first element and said second element for affixing together said first element and said second element;
- a solid polymer film having good adhesion properties positioned between said injected core and at least one of said first element and said second element;
- at least one reinforcement component located between (1) said one of said first element and said second element and (2) said polymer film, said at least one reinforcement component being in contact with said polymer film;
- wherein said ski is produced by a process comprising the steps of:
- providing said first element in the form of a substrate having an internal surface formed by said reinforcement, said reinforcement comprising a textile reinforcement sheet preimpregnated with a thermosetting resin;
- positioning said solid polymer film on said internal surface of said first element to cover said reinforcement;
- placing said film and said first element in a mold;
- closing said mold and hot forming under pressure said film and said first element to make said film adhere to said first element;
- and
- injecting a hardenable foam into said mold, whereby said solid film screens the hardenable foam from the reinforcement and said foam, after injection and hardening, adheres securely to said solid film.
9 more elements
Dependencies are inferred from the claim text.