Patent US3797137A successfully refreshed from Google Patents.
US3797137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ballet slipper
Assignee: PIRVOETTE PROJECTS Inc
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Filing: 1972-11-13
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Granted: 1974-03-19
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Expires: 1992-11-13
Abstract
Abstract There is disclosed a ballet slipper consisting of two main parts - a fabric upper and a plastic foot support. The plastic foot support is substituted for the conventional last and serves the additional function of replacing the stiffening material which is usually provided in the toe of a ballet slipper. If the plastic has the same color as the upper, there is no need to cover the toe of the slipper with fabric; in such a case, the ballet slipper can have an extraordinarily long life.
Inventors
- 👤 R Harkness
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:54
CPC Classifications
A; A43; A43B; A43B23/00; A43B23/08; A43B23/081; A43B23/086; A43B23/087; A43B5/00; A43B5/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
51 words
A ballet slipper comprising a unitary plastic base having a foot supporting section and a toe enclosing section, said toe enclosing section including a toe having an external snub-nosed shape and an internal configuration conforming to the toe dimensions of a dancer, and a fabric upper secured to said plastic base.
Claim 2
Dependent Claim
51 words
A ballet slipper comprising a unitary plastic base having a foot supporting section and a toe enclosing section, said toe enclosing section including a toe having an external snub-nosed shape and an internal configuration conforming to the toe dimensions of a dancer, and a fabric upper secured to said plastic base.
Claim 3
Dependent Claim
38 words
A ballet slipper in accordance with claim 1 wherein said fabric upper terminates above said snub-nosed shaped toe so that said snub-nosed shape toe is visible, and said plastic and said fabric upper are of the same color.
Claim 4
Dependent Claim
32 words
A ballet slipper in accordance with claim 2 wherein the forward lower surface of said plastic base has ridges thereon for preventing sliding on a floor by a dancer wearing the slipper.
Claim 5
Dependent Claim
19 words
A ballet slipper in accordance with claim 2 wherein a plurality of ventilation holes extend through said plastic base.
Claim 6
Dependent Claim
31 words
A ballet slipper in accordance with claim 2 wherein the rear section of said plastic base includes a groove along the sides thereof for containing an edge of said fabric upper.
Claim 7
Dependent Claim
24 words
A ballet slipper in accordance with claim 5 wherein said fabric upper is secured to said plastic base by stitching along an edge thereof.
Claim 8
Dependent Claim
32 words
A ballet slipper in accordance with claim 1 wherein the forward lower surface of said plastic base has ridges thereon for preventing sliding on a floor by a dancer wearing the slipper.
Claim 9
Dependent Claim
19 words
A ballet slipper in accordance with claim 1 wherein a plurality of ventilation holes extend through said plastic base.
Claim 10
Dependent Claim
31 words
A ballet slipper in accordance with claim 1 wherein the rear section of said plastic base includes a groove along the sides thereof for containing an edge of saId fabric upper.
Claim 11
Dependent Claim
24 words
A ballet slipper in accordance with claim 9 wherein said fabric upper is secured to said plastic base by stitching along an edge thereof.
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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |