US3871116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aseptic disposable mule or slipper
Assignee: Individual
•
Filing: 1974-03-05
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Granted: 1975-03-18
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Expires: 1994-03-05
Abstract
Abstract A mule or similar slipper is described which is made up in one piece providing a sole and a vamp formed by hooking tongues in slits provided at the ends of flaps extending on either side of the said sole. The mule is made of two sheets of resilient material comprising a volume of air in between them, because of the face that the free edges of the item providing sole and vamp are welded together.
Inventors
- 👤 Pierre Vanderlinden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:20
CPC Classifications
A; A43; A43B; A43B3/00; A43B3/10; A43B3/101; A43B3/106
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
92 words
A mule or similar slipper made up in one piece providing a sole and a vamp formed by hooking tongues in slits provided at the end of flaps extending on either side of the said sole, these items being comprised of a celluar resilient material, wherein the cellular resilient material, the outside face of which has been smoothed, is in the form of two sheets confining a volume of air in between them because of the fact that the free edges of the item providing the sole and vamp are welded together.
Claim 2
Dependent Claim
92 words
A mule or similar slipper made up in one piece providing a sole and a vamp formed by hooking tongues in slits provided at the end of flaps extending on either side of the said sole, these items being comprised of a celluar resilient material, wherein the cellular resilient material, the outside face of which has been smoothed, is in the form of two sheets confining a volume of air in between them because of the fact that the free edges of the item providing the sole and vamp are welded together.
Claim 3
Dependent Claim
23 words
A mule or similar slipper, as claimed in claim 1, wherein the outside face of the said material comprises a rolled smooth surface.
Claim 4
Dependent Claim
36 words
A mule or similar slipper, as claimed in claim 1, wherein the outside face is a laminate comprising a base of said cellular resilient material and a surface layer of smooth, impervious plastic material adhered thereto.
Claim 5
Dependent Claim
33 words
A mule or similar slipper as claimed in claim 1, wherein the two layers providing the sole and vamp are connected together by welding at the locations where they are to be folded.
Claim 6
Dependent Claim
38 words
A mule or similar slipper as claimed in claim 1, wherein the two layers providing the sole and vamp are connected together by welding at locations set back from the ends of the slits receiving the said tongues.
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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |