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US4268931A Expired / Lapsed US ⏱️ 0.0 years remaining

Process of manufacturing an inner boot

Assignee: Salomon SAS
•
Filing: 1977-10-19
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Granted: 1981-05-26
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Expires: 1997-10-19
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Abstract

Abstract The present invention concerns an article of footwear to be placed inside a ski boot, and the process of its manufacture. The process according to the invention is characterized by the fact that the article of footwear is molded in its open position, thereby permitting the inner core to be conveniently removed from the mold.

Inventors

  • 👤 Georges P. J. Salomon

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 19:26
CPC Classifications
A; A43; A43B; A43B5/00; A43B5/04; A43B5/0405

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 49 words
Molding process for an article of footwear to be placed in a boot, said article of footwear being molded as a single piece with its upper part having substantially the shape of said article in its open position, whereby said article can be conveniently put on and taken off.
Claim 2
Dependent Claim 49 words
Molding process for an article of footwear to be placed in a boot, said article of footwear being molded as a single piece with its upper part having substantially the shape of said article in its open position, whereby said article can be conveniently put on and taken off.
Claim 3
Dependent Claim 178 words
Process according to claim 1, including the steps of (a) molding the article of footwear by placing a core inside a hollow mold; (b) injecting synthetic matter into the space provided between said core and said mold; (c) removing said article of footwear by extracting the inner core, the article of footwear being open in the position for putting it on and removing it; (d) the inner core having a lower part in the shape of a foot and being extended by an upper part having substantially the shape of the volume delimited by the article of footwear open in the slipping-on/slipping-off position; (e) the hollow mold having in its lower part, the shape of the inside of the boot and, in its upper part, a practically flanged shape corresponding to the open position for putting on and taking off said article of footwear, whereby, on the one hand, the inner core can be conveniently extracted during the mold-stripping process, and, on the other hand, the skier can conveniently put on and take off the article of footwear.
Claim 4
Dependent Claim 51 words
Process according to claim 1, said footwear including at least one pliable zone allowing the closing of the article of footwear when it is put on the foot, wherein said pliable zone is created by connecting the edges of the article of footwear surrounding the pliable zone by a pliable membrane.
Claim 5
Dependent Claim 51 words
Process according to claim 3, wherein, in order to connect the edges of the article of footwear surrounding the pliable zone by a pliable membrane, a recess allowing the passage of the pliable membrane is provided between the inner core and the hollow mold on a level with the pliable zone.
Claim 6
Dependent Claim 38 words
Process according to claim 4, wherein, before molding, a sock is slipped over the inner core, said recess being at least as thick as the sock, so that the pliable membrane is at least constituted by said sock.
Claim 7
Dependent Claim 34 words
Process according to claim 3, wherein the recess communicates with the space between the core and the hollow mold, so that the pliable membrane is created directly when the article of footwear is molded.
Claim 8
Dependent Claim 42 words
Process according to claim 6, wherein the thickness of the recess is less than that of the space between the core and the hollow mold, so that the thickness of the pliable membrane is less than that of the article of footwear.
Claim 9
Dependent Claim 25 words
Process according to any of claim 3, wherein the edges of the hollow mold defining the pliable zone are bevelled in relationship to one another.
Claim 10
Dependent Claim 186 words
Molding process for an article of footwear to be placed in a boot, including the steps of (a) molding the article of footwear by placing a core inside a hollow mold; (b) injecting synthetic matter into the space provided between said core and said mold; (c) removing said article of footwear by extracting the inner core, the article of footwear being open in the position for putting it on and removing it; (d) the inner core having a lower part in the shape of a foot and being extended by an upper part having substantially the shape of the volume delimited by the article of footwear open in the slipping-on/slipping-off position; (e) the hollow mold having, in its lower part, the shape of the inside of the boot and, in its upper part, a practically flanged shape corresponding to the open position for putting on and taking off said article of footwear, whereby, on the one hand, the inner core can be conveniently extracted during the mold-stripping process, and, on the other hand, the skier can conveniently put on and take off the article of footwear.
Claim 11
Dependent Claim 186 words
Molding process for an article of footwear to be placed in a boot, including the steps of (a) molding the article of footwear by placing a core inside a hollow mold; (b) injecting synthetic matter into the space provided between said core and said mold; (c) removing said article of footwear by extracting the inner core, the article of footwear being open in the position for putting it on and removing it; (d) the inner core having a lower part in the shape of a foot and being extended by an upper part having substantially the shape of the volume delimited by the article of footwear open in the slipping-on/slipping-off position; (e) the hollow mold having, in its lower part, the shape of the inside of the boot and, in its upper part, a practically flanged shape corresponding to the open position for putting on and taking off said article of footwear, whereby, on the one hand, the inner core can be conveniently extracted during the mold-stripping process, and, on the other hand, the skier can conveniently put on and take off the article of footwear.

References Cited (Backward Citations)

US3645017A Cited
US3896202A Cited
FR2230155A5 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-05-25 1984-11-24 1985-05-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-05-25 1988-11-24 1989-05-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-05-25 1992-11-24 1993-05-26 $7700.00 Window Closed / Lapsed

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