US4073023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacture of footwear
Assignee: Ro Search Inc
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Filing: 1976-10-22
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Granted: 1978-02-14
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Expires: 1996-10-22
Abstract
Abstract Improvements in the safety and comfort of footwear having the appearance of having very thick soles and improvements in the method of their manufacture.
Inventors
- 👤 Anton Liebscher
- 👤 Sven Oberg
- 👤 Kenneth Smathers
- 👤 Horace Auberry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:11
CPC Classifications
B; B29; B29D; B29D35/00; B29D35/06; B29D35/061; A; A43; A43D; A43D9/00; B29D35/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
The method of manufacture of footwear with molded soles, comprising the steps of securing an outward extending welt to the upper spaced substantially above the insole level, securing string lasting means to said upper above the insole level, string lasting said upper on the mold last of a sole molding device in its loading station, positioning and maintaining the outward extending welt in its final position by means of a welt plate while removed from the sole molding device, inspecting the shoe bottom and locking said welt plate in position relative to said mold last, moving the unit of last, welt plate, and locking means into juxtaposition with the sole molding device, clamping the edge of the outward extending welt between said welt plate and the edge of the sole molding device, while preventing the inwardly protruding edge of said welt plate from exerting horizontal pressure upon the upper and thereby preventing damage to said upper, and molding a sole to said welt.
Claim 2
Independent Claim
163 words
The method of manufacture of footwear with molded soles, comprising the steps of securing an outward extending welt to the upper spaced substantially above the insole level, securing string lasting means to said upper above the insole level, string lasting said upper on the mold last of a sole molding device in its loading station, positioning and maintaining the outward extending welt in its final position by means of a welt plate while removed from the sole molding device, inspecting the shoe bottom and locking said welt plate in position relative to said mold last, moving the unit of last, welt plate, and locking means into juxtaposition with the sole molding device, clamping the edge of the outward extending welt between said welt plate and the edge of the sole molding device, while preventing the inwardly protruding edge of said welt plate from exerting horizontal pressure upon the upper and thereby preventing damage to said upper, and molding a sole to said welt.
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) | 1981-02-13 | 1981-08-15 | 1982-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-13 | 1985-08-15 | 1986-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-13 | 1989-08-15 | 1990-02-14 | $7700.00 | Window Closed / Lapsed |