US4523346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for the manufacture of footwear
Assignee: Ro Search Inc
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Filing: 1983-08-11
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Granted: 1985-06-18
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Expires: 2003-08-11
Abstract
Abstract The disclosure relates to the manufacture of footwear with direct molded elastomeric soles wherein the last is built up in the center region to provide a sole which appears thick externally, yet is thin and relatively lightweight in its center region. The last includes grooves over the region of the stitches securing the upper to the welt to seal and waterproof the footwear in the region of the stitches by permitting the sole material, when molding takes place, to flow over the stitches.
Inventors
- 👤 Horace Auberry
- 👤 Anton Liebscher
- 👤 Sven Oberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:16
CPC Classifications
B; B29; B29D; B29D35/00; B29D35/06; B29D35/061; A; A43; A43B; A43B7/00; A43B7/12
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
73 words
A method for making footwear with elastomeric soles lasted without a structural insole, comprising: (a) providing an upper with a welt stitched thereto, (b) providing a last with grooves on the last bottom substantially tracking said stitches, (c) placing said last within said upper with said grooves closely adjacent said stitches; and (d) forming a sole secured to said upper which includes said groove and the region between said grooves and said stitches.
Claim 2
Independent Claim
73 words
A method for making footwear with elastomeric soles lasted without a structural insole, comprising: (a) providing an upper with a welt stitched thereto, (b) providing a last with grooves on the last bottom substantially tracking said stitches, (c) placing said last within said upper with said grooves closely adjacent said stitches; and (d) forming a sole secured to said upper which includes said groove and the region between said grooves and said stitches.
Claim 3
Dependent Claim
16 words
A method as set forth in claim 1 wherein said welt is a molded seamless welt.
Claim 4
Dependent Claim
27 words
A method as set forth in claim 1 wherein said last bottom slopes away from the last body from the featheredge to the last bottom central region.
Claim 5
Dependent Claim
27 words
A method as set forth in claim 2 wherein said last bottom slopes away from the last body from the featheredge to the last bottom central region.
Claim 6
Dependent Claim
49 words
A last which comprises: (a) a last body including a last bottom, said last bottom including (b) a feather edge, (c) a longitudinal groove positioned within said featheredge and closely adjacent thereto, and (d) a plurality of other grooves communicating with said longitudinal groove spaced around said last bottom.
Claim 7
Dependent Claim
49 words
A last which comprises: (a) a last body including a last bottom, said last bottom including (b) a feather edge, (c) a longitudinal groove positioned within said featheredge and closely adjacent thereto, and (d) a plurality of other grooves communicating with said longitudinal groove spaced around said last bottom.
Claim 8
Dependent Claim
24 words
A last as set forth in claim 5 wherein said other grooves are substantially perpendicular to said longitudinal groove at their region of communication.
Claim 9
Dependent Claim
14 words
A last as set forth in claim 5 wherein said longitudinal groove is continuous.
Claim 10
Dependent Claim
14 words
A last as set forth in claim 6 wherein said longitudinal groove is continuous.
Claim 11
Dependent Claim
32 words
A last as set forth in claim 5 wherein said last bottom is sloped away from said last body in a direction from said featheredge to the interior of said last bottom.
Claim 12
Dependent Claim
32 words
A last as set forth in claim 6 wherein said last bottom is sloped away from said last body in a direction from said featheredge to the interior of said last bottom.
Claim 13
Dependent Claim
32 words
A last as set forth in claim 7 wherein said last bottom is sloped away from said last body in a direction from said featheredge to the interior of said last bottom.
Claim 14
Dependent Claim
32 words
A last as set forth in claim 8 wherein said last bottom is sloped away from said last body in a direction from said featheredge to the interior of said last bottom.
Claim 15
Independent Claim
64 words
An apparatus for making footwear comprising: (a) a mold including a mold frame and a mold top in the form of a last, said last having a last bottom which includes: (b) a feather edge, (c) a longitudinal groove positioned within said featheredge and closely adjacent thereto, and (d) a plurality of other grooves communicating with said longitudinal groove spaced around said last bottom.
Claim 16
Independent Claim
64 words
An apparatus for making footwear comprising: (a) a mold including a mold frame and a mold top in the form of a last, said last having a last bottom which includes: (b) a feather edge, (c) a longitudinal groove positioned within said featheredge and closely adjacent thereto, and (d) a plurality of other grooves communicating with said longitudinal groove spaced around said last bottom.
Claim 17
Dependent Claim
27 words
An apparatus as set forth in claim 13 wherein said other grooves in said last are substantially perpendicular to said longitudinal groove at their region of communication.
Claim 18
Dependent Claim
17 words
An apparatus as set forth in claim 13 wherein said longitudinal groove in said last is continuous.
Claim 19
Dependent Claim
17 words
An apparatus as set forth in claim 14 wherein said longitudinal groove in said last is continuous.
Claim 20
Dependent Claim
32 words
An apparatus as set forth in claim 13 wherein said last bottom is sloped away from said last body in a direction from said featheredge to the interior of said last bottom.
Claim 21
Dependent Claim
32 words
An apparatus as set forth in claim 14 wherein said last bottom is sloped away from said last body in a direction from said featheredge to the interior of said last bottom.
Claim 22
Dependent Claim
32 words
An apparatus as set forth in claim 15 wherein said last bottom is sloped away from said last body in a direction from said featheredge to the interior of said last bottom.
Claim 23
Dependent Claim
32 words
An apparatus as set forth in claim 16 wherein said last bottom is sloped away from said last body in a direction from said featheredge to the interior of said last bottom.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-17 | 1988-12-17 | 1989-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-17 | 1992-12-17 | 1993-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-17 | 1996-12-17 | 1997-06-18 | $7700.00 | Window Closed / Lapsed |