US3303532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injection molding composite bottoms for shoes
Assignee: Individual
•
Filing: 1966-06-21
•
Granted: 1967-02-14
•
Expires: 1986-06-21
Abstract
No abstract record available.
Inventors
- 👤 Herbert P Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:47
CPC Classifications
B; B29; B29D; B29D35/00; B29D35/06; B29D35/061; A; A43; A43B; A43B1/00; A43B1/0027
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
APPARATUS FOR APPLYING COMPOSITE BOTTOMS TO SHOES COMPRISING A MOLD HAVING AN OPEN TOP AND BOTTOM, A SOLE PLATE SUPPORTED AT THE BOTTOM OPENING FOR MOVEMENT TOWARD THE BOTTOM OF A LAST RESTING ON THE OPEN TOP OF THE MOLD, MEANS FOR MOVING THE SOLE PLATE THROUGH THE MOLD TOWARD THE BOTTOM OF THE LAST TO PRESS AN INTERMEDIATE BOTTOM ELEMENT INTO ENGAGEMENT WITH THE BOTTOM OF AN UPPER ON THE LAST, MEANS FOR RETRACTING THE SOLE PLATE TO FORM, IN CONJUNCTION WITH THE MOLD, A CLOSED CAVITY BETWEEN IT AND THE INTERMEDIATE BOTTOM ELEMENT OF SUFFICIENT DEPTH TO PROVIDE AN OUTSOLE OF THE DESIRED THICKNESS, AND MEANS FOR INJECTING BOTTOM-FORMING COMPOSITION INTO THE CAVITY TO FORM AN OUTSOLE ABOUT THE BOTTOM ELEMENT.
Claim 2
Dependent Claim
123 words
APPARATUS FOR APPLYING COMPOSITE BOTTOMS TO SHOES COMPRISING A MOLD HAVING AN OPEN TOP AND BOTTOM, A SOLE PLATE SUPPORTED AT THE BOTTOM OPENING FOR MOVEMENT TOWARD THE BOTTOM OF A LAST RESTING ON THE OPEN TOP OF THE MOLD, MEANS FOR MOVING THE SOLE PLATE THROUGH THE MOLD TOWARD THE BOTTOM OF THE LAST TO PRESS AN INTERMEDIATE BOTTOM ELEMENT INTO ENGAGEMENT WITH THE BOTTOM OF AN UPPER ON THE LAST, MEANS FOR RETRACTING THE SOLE PLATE TO FORM, IN CONJUNCTION WITH THE MOLD, A CLOSED CAVITY BETWEEN IT AND THE INTERMEDIATE BOTTOM ELEMENT OF SUFFICIENT DEPTH TO PROVIDE AN OUTSOLE OF THE DESIRED THICKNESS, AND MEANS FOR INJECTING BOTTOM-FORMING COMPOSITION INTO THE CAVITY TO FORM AN OUTSOLE ABOUT THE BOTTOM ELEMENT.
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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |