US3896202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of protective footwear
Assignee: Individual
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Filing: 1973-05-07
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Granted: 1975-07-22
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Expires: 1993-05-07
Abstract
Abstract A method for the manufacture of insulating and protective inner boots particularly well suited for use by skiers. An inner boot produced in accordance with the present invention is characterized by an integral tongue and is manufactured by an injection molding technique wherein the injected plastic foam material is excluded from regions where cuts are to be made to define the integral tongue.
Inventors
- 👤 Alfred Palau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:53
CPC Classifications
B; B29; B29D; B29D35/00; B29D35/06; B29D35/061; B29D35/064; A; A43; A43B; A43B5/00; A43B5/04; A43B5/0405; A43B7/00; A43B7/14; A43B7/28
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
140 words
A METHOD OF MANUFACTURIN A PROTECTIVE SOCK, THE SOCK INCLUDING A SECTIONAL ELEMENT OF ARCUATE CROSS-SECTION WHICH DEFINES AN INTEGRAL TONGUE, THE METHOD INCLUDING THE STEPS OF: INSTALLING A SOCK-LIK INNER LINER COMPRISED OF A FABRIC MATERIAL ON A FORM WHREBY THE INNER LINER COMPOUNDS EXACTLY TO THE SHAPE OF THE FORM, PLACING THE LINER COVERED FROM IN MOLD, INJECTING PLASTIC MATERIAL INTO THE MOLD AROUND THE FORM AND LINER, PREVENTING FLOW OF THE INJECTED PLASTIC MATERIAL INTO AT LEAST A PAIR OF SPATIALLY DISPLACED ELONAGATED ARCULATE REGIONS AREA OF THE INSTEP, PERMITTING THE INJECTED MATERIAL TO CURE SO AS TO DEFINE A MOLDED ONE PIECE SOCK, AND CUTTING THE UPPER LEG PORTION OF THE MOLDED SOCK TO THE INSTEP ALONG LINES DEFINED BY THE REGION FROM WHICH THE INJECTED PLASTIC MATERIAL HAS BEEN EXCLUDED TO DEFINE AN INTEGRAL TONGUE.
Claim 2
Independent Claim
140 words
A METHOD OF MANUFACTURIN A PROTECTIVE SOCK, THE SOCK INCLUDING A SECTIONAL ELEMENT OF ARCUATE CROSS-SECTION WHICH DEFINES AN INTEGRAL TONGUE, THE METHOD INCLUDING THE STEPS OF: INSTALLING A SOCK-LIK INNER LINER COMPRISED OF A FABRIC MATERIAL ON A FORM WHREBY THE INNER LINER COMPOUNDS EXACTLY TO THE SHAPE OF THE FORM, PLACING THE LINER COVERED FROM IN MOLD, INJECTING PLASTIC MATERIAL INTO THE MOLD AROUND THE FORM AND LINER, PREVENTING FLOW OF THE INJECTED PLASTIC MATERIAL INTO AT LEAST A PAIR OF SPATIALLY DISPLACED ELONAGATED ARCULATE REGIONS AREA OF THE INSTEP, PERMITTING THE INJECTED MATERIAL TO CURE SO AS TO DEFINE A MOLDED ONE PIECE SOCK, AND CUTTING THE UPPER LEG PORTION OF THE MOLDED SOCK TO THE INSTEP ALONG LINES DEFINED BY THE REGION FROM WHICH THE INJECTED PLASTIC MATERIAL HAS BEEN EXCLUDED TO DEFINE AN INTEGRAL TONGUE.
Claim 3
Dependent Claim
59 words
The method of claim 1 further comprising: positioning a sock-type outer liner of larger dimensions than the inner liner over the form and inner liner prior to the injection of plastic material, the plastic material thereafter being injected between the inner and outer liners and being prevented from entering the arcuate regions between said liners which define the tongue.
Claim 4
Dependent Claim
24 words
The method of claim 2 further comprising the step of: joining the exposed edges of the inner and outer liners to define a seam.
Claim 5
Dependent Claim
24 words
The method of claim 1 further comprising the step of: joining the exposed edges of the inner and outer liners to define a seam.
Claim 6
Independent Claim
188 words
A method of manufacturing a protective sock, the sock including a sectional element of arcuate cross-section which defines an integral tongue, the method including the steps of: installing a sock-like inner liner comprised of a fabric material on a form whereby the inner liner corresponds exactly to the shape of the form; positioning a sock-like outer liner of larger dimensions than said inner liner over the form and inner liner; placing the liner covered form in a mold; injecting plastic material between said liners; preventing flow of the injected plastic material into a pair of spacially displaced elongated arcuate regions between said liners, said arcuate regions extending from the upper edge of the desired sock to the area of the instep; simultaneously preventing flow of the injected plastic material into at least a third preselected region between said liners; permitting the injected material to cure so as to define a molded one piece sock; and cutting the upper leg portion of the molded sock to the instep along lines defined by the arcuate regions from which the injected plastic material has been excluded to define an integral tongue.
Claim 7
Independent Claim
188 words
A method of manufacturing a protective sock, the sock including a sectional element of arcuate cross-section which defines an integral tongue, the method including the steps of: installing a sock-like inner liner comprised of a fabric material on a form whereby the inner liner corresponds exactly to the shape of the form; positioning a sock-like outer liner of larger dimensions than said inner liner over the form and inner liner; placing the liner covered form in a mold; injecting plastic material between said liners; preventing flow of the injected plastic material into a pair of spacially displaced elongated arcuate regions between said liners, said arcuate regions extending from the upper edge of the desired sock to the area of the instep; simultaneously preventing flow of the injected plastic material into at least a third preselected region between said liners; permitting the injected material to cure so as to define a molded one piece sock; and cutting the upper leg portion of the molded sock to the instep along lines defined by the arcuate regions from which the injected plastic material has been excluded to define an integral tongue.
Claim 8
Dependent Claim
48 words
The method of claim 5 wherein the step of preventing the flow of injected plastic material into the third region comprises: inserting at least a first sheet of material to which the injected plastic material will not adhere between a portion of the inner and the outer layers.
Claim 9
Dependent Claim
47 words
The method of claim 5 wherein the step of preventing the flow of injected plastic material into the third region comprises: inserting a sheet of pressure and temperature sensitive formable material between a portion of the inner and outer liners prior to injection of the plastic material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-21 | 1979-01-20 | 1979-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-21 | 1983-01-20 | 1983-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-21 | 1987-01-20 | 1987-07-22 | $7700.00 | Window Closed / Lapsed |