US3758903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for unit molding
Assignee: Ro Search Inc
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Filing: 1972-08-04
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Granted: 1973-09-18
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Expires: 1992-08-04
Abstract
Abstract A method of lasting shoe uppers and sole-attaching devices to carry out the method.
Inventors
- 👤 H Auberry
- 👤 A Liebscher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:36
CPC Classifications
B; B29; B29D; B29D35/00; B29D35/06; B29D35/061; B29D35/065
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
88 words
The method of manufacture of footwear which includes the steps, in sequence, of placing an upper upon a last, positioning a sideframe in proper position relative to the upper and last to hold the upper in its proper position on the last, locking the sideframe in its proper position, the last, upper and sideframe constituting a movable unit, thereafter moving the unit in relation to a sole plate to form a sole molding cavity, placing an elastomeric material in the cavity and molding a sole to the upper.
Claim 2
Independent Claim
88 words
The method of manufacture of footwear which includes the steps, in sequence, of placing an upper upon a last, positioning a sideframe in proper position relative to the upper and last to hold the upper in its proper position on the last, locking the sideframe in its proper position, the last, upper and sideframe constituting a movable unit, thereafter moving the unit in relation to a sole plate to form a sole molding cavity, placing an elastomeric material in the cavity and molding a sole to the upper.
Claim 3
Dependent Claim
32 words
The method of manufacture of footwear as set forth in claim 1 wherein a plurality of lasts and side frames are mounted upon a conveyor and moved relative to the sole plates.
Claim 4
Dependent Claim
30 words
The method of manufacture of footwear as set forth in claim 2 wherein said lasts and side frames are of different configurations to manufacture in sequence footwear of different sizes.
Claim 5
Dependent Claim
70 words
Apparatus for manufacture of footwear comprising a last, an adjustable side frame, means for locking said side frame directly to said last in its adjusted position, said last, side frame and locking means forming a unitary structure, a separate sole plate forming with said unitary structure a mold cavity, and means for exerting relative movement between said sole plate and said unitary structure to mold a sole to an upper.
Claim 6
Dependent Claim
70 words
Apparatus for manufacture of footwear comprising a last, an adjustable side frame, means for locking said side frame directly to said last in its adjusted position, said last, side frame and locking means forming a unitary structure, a separate sole plate forming with said unitary structure a mold cavity, and means for exerting relative movement between said sole plate and said unitary structure to mold a sole to an upper.
Claim 7
Dependent Claim
96 words
Apparatus for manufacture of footwear comprising a plurality of lasts, an adjustable side frame for each last, means for locking each said side frame directly to its respective last in its aDjusted position, said last, side frame and locking means forming a unitary structure, a plurality of said unitary structures being mounted on a conveyor, said unitary structures being of different configurations, sole plate means forming with each unitary structure a mold cavity, and means for exerting relative movement between said sole plate means and each said unitary structure to mold a sole to an upper.
Claim 8
Dependent Claim
96 words
Apparatus for manufacture of footwear comprising a plurality of lasts, an adjustable side frame for each last, means for locking each said side frame directly to its respective last in its aDjusted position, said last, side frame and locking means forming a unitary structure, a plurality of said unitary structures being mounted on a conveyor, said unitary structures being of different configurations, sole plate means forming with each unitary structure a mold cavity, and means for exerting relative movement between said sole plate means and each said unitary structure to mold a sole to an upper.
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |