US3812604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shoe construction and method of manufacturing a shoe
Assignee: NIHON YOHIN CO Ltd
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Filing: 1972-08-28
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Granted: 1974-05-28
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Expires: 1992-08-28
Abstract
Abstract A shoe includes an instep which is joined to a bottom layer by an intermediate layer which is bonded between the instep and the bottom layer. The intermediate layer is advantageously applied in a liquid form after first positioning the bottom layer at the bottom of a mold and positioning the instep so that its lower inturned edges project into the mold. The liquid in the form of a synthetic plastic is permitted to fill the space between the bottom layer and the instep and to be cooled and become bound to these parts. In one embodiment, the bottom layer is advantageously made of an upper and lower superposed layer part with the upper layer having at least one through opening to permit the flow of the intermediate bonding layer therethrough and securement to a recess of the lower part of the bottom layer. In one form the shoe includes a bottom layer made up of upper and lower parts which are joined together by the bonding layer which flows through openings in the upper part into receiving recesses or bores of the lower part. The lower part may advantageously includes a bottom having corrugations or projections and which either includes recesses or receiving bores for the bonding material which extends therethrough.
Inventors
- 👤 T Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:58
CPC Classifications
B; B29; B29D; B29D35/00; B29D35/10; A; A43; A43B; A43B13/00; A43B13/02; A43B13/12; A43B9/00; A43B9/16; A43B9/18
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
167 words
A method of manufacturing a shoe using a mold having a shoe bottom recess, comprising applying a bottom layer into the mold recess to locate it at the bottom of the mold recess, mounting a shoe in step on the top of the mold so that its peripheral edge extends into the mold recess and it is spaced from the bottom layer, and injecting a liquid synthetic hardenable material into the mold between the shoe instep and the bottom layer to form an intermediate bonding layer bonding said instep and the bottom layer together, said bottom layer comprising an upper and lower part which are superimposed together and with the upper part having at least one opening therethrough and the lower part having at least one recess aligned with the opening, and wherein the bonding layer is applied so as to penetrate through the opening of the upper part into the recess of the lower part to bind the upper and lower parts together with the insert.
Claim 2
Independent Claim
167 words
A method of manufacturing a shoe using a mold having a shoe bottom recess, comprising applying a bottom layer into the mold recess to locate it at the bottom of the mold recess, mounting a shoe in step on the top of the mold so that its peripheral edge extends into the mold recess and it is spaced from the bottom layer, and injecting a liquid synthetic hardenable material into the mold between the shoe instep and the bottom layer to form an intermediate bonding layer bonding said instep and the bottom layer together, said bottom layer comprising an upper and lower part which are superimposed together and with the upper part having at least one opening therethrough and the lower part having at least one recess aligned with the opening, and wherein the bonding layer is applied so as to penetrate through the opening of the upper part into the recess of the lower part to bind the upper and lower parts together with the insert.
Claim 3
Dependent Claim
24 words
A method of manufacturing a shoe, according to claim 1, wherein said upper part includes at least one blind bore receiving the bonding layer.
Claim 4
Dependent Claim
24 words
A method of manufacturing a shoe, according to claim 1, wherein said lower part includes at least one blind bore receiving the bonding layer.
Claim 5
Dependent Claim
60 words
A method of manufacturing a shoe, according to claim 1, wherein said upper part includes a plurality of openings arranged around its periphery, said lower part having a plurality of bores aligned with respective openings arranged around its periphery and wherein the bonding layer penetrates the openings of the upper part and extends into the bores of the lower part.
Claim 6
Dependent Claim
30 words
A method of manuFacturing a shoe, according to claim 4, wherein the lower part includes alternately arranged through bores and blind bores aligned with the openings of said upper part.
Claim 7
Dependent Claim
92 words
A shoe construction, comprising a shoe instep having a peripheral lower portion, a shoe bottom spaced from said lower portion and an intermediate bonding layer extending between said bottom and said instep and bonding said instep to said bottom, said bottom layer comprising an upper and lower part, said upper part having at least one through opening therein and said bottom part having at least one receiving recess aligned with the opening, the bonding material extending through the opening and into the upper part and into the recess of the lower part.
Claim 8
Dependent Claim
92 words
A shoe construction, comprising a shoe instep having a peripheral lower portion, a shoe bottom spaced from said lower portion and an intermediate bonding layer extending between said bottom and said instep and bonding said instep to said bottom, said bottom layer comprising an upper and lower part, said upper part having at least one through opening therein and said bottom part having at least one receiving recess aligned with the opening, the bonding material extending through the opening and into the upper part and into the recess of the lower part.
Claim 9
Dependent Claim
51 words
A shoe construction, according to claim 6, wherein said upper part includes a plurality of openings arranged at spaced locations in a marginal area around its periphery, said lower part having receiving recesses aligned with each of said openings and the bonding material extending through said openings and into said recesses.
Claim 10
Dependent Claim
46 words
A shoe construction, according to claim 6, wherein said bottom layer comprises two superposed portions, each having a plurality of aligned openings and receiving recesses into which said bonding material extends, said bottom layer having a corrugated sole with the bonding material extending into the sole.
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) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |