US4706392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interchangeable shoe and slipper combination
Assignee: Individual
•
Filing: 1986-10-20
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Granted: 1987-11-17
•
Expires: 2006-10-20
Abstract
Abstract An interchangeable shoe and slipper combination includes an upper having a front upper portion secured on a sole and a rear upper portion. A slide fastener couples or uncouples the front upper portion and the rear upper portion so as to assemble a shoe, or form a slipper by separating the rear upper portion from the front upper portion. A detachable heel is fixed under the sole, which includes several heel sections selectively fixed under the sole for adjusting the heel height of the shoe.
Inventors
- 👤 Tzu-Tsan Yang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:31
CPC Classifications
A; A43; A43B; A43B3/00; A43B3/24; A43B13/00; A43B13/28; A43B13/36; A43C; A43C11/00; A43C11/12
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
195 words
An interchangeable shoe and slipper combination comprising: an upper, a sole, a detachable heel means fixed under the sole, and a separable slide fastener adapted to couple or uncouple the upper and the sole, the improvement which comprises: said upper including a front upper portion adapted for covering a wearer's toes having the lower perimeter of said front upper portion secured on the sole, and a rear upper portion coupled to said front upper portion by said slide fastener; said slide fastener including a lower strip having a front strip portion formed on an opening edge of said front upper portion and having a rear strip portion formed on the rear edge of said sole, and an upper strip having a front strip portion operatively coupled to the front strip portion of said lower strip and having a rear strip portion operatively coupled to the rear strip portion of said lower strip, and a coupler which couples said front upper portion with said rear upper portion to form an assembled shoe and adapted to uncouple the two said upper portions to separate said rear upper portion from said front upper portion to become a slipper.
Claim 2
Dependent Claim
195 words
An interchangeable shoe and slipper combination comprising: an upper, a sole, a detachable heel means fixed under the sole, and a separable slide fastener adapted to couple or uncouple the upper and the sole, the improvement which comprises: said upper including a front upper portion adapted for covering a wearer's toes having the lower perimeter of said front upper portion secured on the sole, and a rear upper portion coupled to said front upper portion by said slide fastener; said slide fastener including a lower strip having a front strip portion formed on an opening edge of said front upper portion and having a rear strip portion formed on the rear edge of said sole, and an upper strip having a front strip portion operatively coupled to the front strip portion of said lower strip and having a rear strip portion operatively coupled to the rear strip portion of said lower strip, and a coupler which couples said front upper portion with said rear upper portion to form an assembled shoe and adapted to uncouple the two said upper portions to separate said rear upper portion from said front upper portion to become a slipper.
Claim 3
Dependent Claim
109 words
An interchangeable shoe and slipper combination according to claim 1, wherein said detachable heel means includes a first-section heel having a screw hole formed on its bottom, a second-section heel having a screw formed on the upper surface of said second-section heel adapted to engage with the screw hole of said first-section heel and a screw hole formed on the bottom of said second-section heel, and a third-section heel formed a screw on its upper surface adapted to engage with the screw hole of said second-section heel, to thereby form a detachable heel means by selectively adjustably superimposing said second-section heel and said third-section heel under said first-section heel.
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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) | 1990-11-16 | 1991-05-18 | 1991-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-16 | 1995-05-18 | 1995-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-16 | 1999-05-18 | 1999-11-17 | $7700.00 | Window Closed / Lapsed |