US4219946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shoe with an interchangeable heel
Assignee: Individual
•
Filing: 1978-09-14
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Granted: 1980-09-02
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Expires: 1998-09-14
Abstract
Abstract A shoe with an interchangeable heel comprises two parts, a main sole part reinforced in its rear end section by a rigid plate and a separate heel part. The heel part is fitted to the reinforced section of the sole part by a ferrule, fixed to one part, having a projecting portion of non-circular cross-section which locates in an aperture of complementary shape in the other part so as to position and prevent rotation of the heel, and a removable locking element is provided to lock the heel part in place.
Inventors
- 👤 Uwe Baum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:41
CPC Classifications
A; A43; A43B; A43B21/00; A43B21/36; A43B21/46; A43B3/00; A43B3/24
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
224 words
A construction of shoes with interchangeable heels comprising: a main sole having in a heel portion thereof a counter sunk circular hole comprising a lower portion of smaller diameter and an upper portion of larger diameter, a reinforcing plate fixed on the lower side of the heel portion of said sole, said plate having a non-circular hole registering with but larger than the lower portion of said hole in said sole, a heel having an upper surface fitting against the lower side of the heel portion of said sole, said heel having a tapped hole extending down from said upper surface and aligned with said hole in said sole, a non-circular ferrule fixed to said heel and projecting up from said upper surface of said heel, said ferrule having an opening registering with said tapped hole in said heel and a non-circular outer periphery received in said non-circular hole in said plate to secure said heel against turning relative to said sole, and a screw having a threaded shank received in said tapped hole in said heel and a head received in said upper larger portion of said hole in said sole, said screw extending through said holes in said sole and said plate and being screwed into said tapped hole in said heel to secure said heel removably and replaceably to said sole.
Claim 2
Dependent Claim
224 words
A construction of shoes with interchangeable heels comprising: a main sole having in a heel portion thereof a counter sunk circular hole comprising a lower portion of smaller diameter and an upper portion of larger diameter, a reinforcing plate fixed on the lower side of the heel portion of said sole, said plate having a non-circular hole registering with but larger than the lower portion of said hole in said sole, a heel having an upper surface fitting against the lower side of the heel portion of said sole, said heel having a tapped hole extending down from said upper surface and aligned with said hole in said sole, a non-circular ferrule fixed to said heel and projecting up from said upper surface of said heel, said ferrule having an opening registering with said tapped hole in said heel and a non-circular outer periphery received in said non-circular hole in said plate to secure said heel against turning relative to said sole, and a screw having a threaded shank received in said tapped hole in said heel and a head received in said upper larger portion of said hole in said sole, said screw extending through said holes in said sole and said plate and being screwed into said tapped hole in said heel to secure said heel removably and replaceably to said sole.
Claim 3
Dependent Claim
36 words
A shoe construction according to claim 1, in which said tapped hole is provided by an internally threaded sleeve set in said heel, and said ferrule comprises a flange at the upper end of said sleeve.
Claim 4
Dependent Claim
36 words
A shoe construction according to claim 1, in which the outer periphery of said ferrule is bevelled so as to wedge in said hole in said plate when said screw is screwed into said tapped hole.
Claim 5
Dependent Claim
24 words
A shoe construction according to claim 1, in which said head of said screw has a flat upper surface with a transverse slot therein.
Claim 6
Dependent Claim
44 words
A shoe construction according to claim 1, in which said hole in said plate and the outer periphery of said ferrule have a shape which is in part an arcuate curve concentric with said hole in said sole and in part a flat side.
Claim 7
Dependent Claim
13 words
A shoe construction according to claim 1, in which said plate is metal.
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) | 1983-09-02 | 1984-03-03 | 1984-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-02 | 1988-03-03 | 1988-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-02 | 1992-03-03 | 1992-09-02 | $7700.00 | Window Closed / Lapsed |