Boot,especially ski boot

Claim 2

A boot, especially ski boot, which includes: a hard elastic outer shoe having a spreadable first step-in opening extending along the central longitudinal plane thereof, a relatively thick-walled soft-elastic inner shoe consisting of a single piece and located within said outer shoe, said inner shoe consisting primarily of cellular polyurethane on the basis of polyester and having a spreadable second step-in opening extending from the front portion of the inner shoe at the longitudinal central plane thereof toward the rear of said inner shoe while gaping laterally toward the small toe side, the rim areas of said second step-in opening in the leg area of said inner shoe half laterally overlapping each other, deformable chamber means being provided between said shoes and adapted selectively to be filled with a viscous fluid, and valve means associated with said chamber means for selectively closing said chamber means and feeding fluid into and releasing same from said chamber means, the end of the inner one of the rim areas overlapping each other extending from the small toe side of the inner shoe while decreasing in thickness with increasing distance from said small toe side and having the inner surface of said end adapted to the outer contour of the lower leg portion of a person.

Claim 3

A boot according to claim 3, in which said chamber means contains a highly viscous liquid composed of from approximately 70 to 80 percent of water, from 27 to 17 percent of ethylene glycol, and of approximately 3 percent cellulose derivate, said viscous liquid having a viscosity of from 15,000 to 20,000 CentipoiSe at room temperature.

Claim 4

A boot according to claim 3, in which said chamber means is formed by an inflatable body interposed between said inner and outer shoe.

Claim 5

A boot according to claim 3, in which said valve means includes a tubular element with a rubber elastic self-sealing insert.

Claim 6

A boot according to claim 6, in which the interior of the hollow needle has lateral passage means leading into said chamber means.

Claim 7

A boot according to claim 3, in which the upper marginal area of said outer shoe is provided with perforation means to thereby make said upper marginal area more bend elastic than the remaining wall portion of said outer shoe, and in which the upper portion of said inner shoe forming the leg region thereof is provided with collar means angled off toward the leg region and having a sealing tip.

Claim 8

A boot according to claim 8, in which the upper portion of the inner shoe is provided with protrusion means corresponding in shape to said perforation means for interlocking engagement therewith.