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US 11,904,512 B2Granted
Dual firmness head restraint
AssigneeFord Global Technologies, LLC
InventorJeremy Sutton
Life of this patent
Estimating the term…
Abstract
A method of making a vehicle headrest restraint and connecting first and second molds to form a mold cavity. A first material is injected with a first density into the mold cavity. A second material is injected with a second density into the mold cavity. The first and second materials are allowed to develop an integrally formed headrest.
Claims18
A method of making a vehicle headrest restraint comprising:
- connecting first and second molds to form an enclosed mold cavity having a lower end and an upper end;
- injecting a first material with a first density into the mold cavity through an injection port inserted at a fixed location within the upper end such that the first material settles in the lower end of the mold cavity;
- injecting a second material with a second density into the mold cavity through the injection port at the fixed location and through the upper end to settle over the first material and to extend to the upper end of the mold cavity;
- and
- subsequently allowing the first and second materials to cure together to develop an integrally formed headrest having a rearward stiff foam portion developed from the first material and a forward flexible portion developed from the second material.
2 more elements
A method of making a vehicle headrest restraint comprising:
- connecting first and second molds to form an enclosed mold cavity having an upper end and a lower end;
- injecting a first material with a first density into the mold cavity through a first injection port inserted at a fixed location within the upper end such that the first material settles in the lower end of the mold cavity;
- injecting a second material with a second density less than the first density into the mold cavity through a second injection port inserted at the fixed location within the upper end such that the second material settles over the first material and extends to the upper end of the mold cavity;
- and
- subsequently allowing the first and second materials to cure together to develop an integrally formed headrest with:
- a forward flexible foam portion defining opposite upper and lower edges;
- and
- a rearward stiff foam portion being directly connected with the forward flexible foam portion along an integral parting line therebetween that extends uninterrupted from the upper edge of the forward flexible portion to the lower edge thereof.
5 more elements
Dependencies are inferred from the claim text.