US4616428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective slipper adaptable to different sizes
Assignee: DISPOVET 2 RUE DE CATILLON 60130 ANT-JUST-EN-CHAUSSEE (FRANCE) A FRENCH BODY CORPORATE
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Filing: 1985-01-28
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Granted: 1986-10-14
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Expires: 2005-01-28
Abstract
Abstract This slipper, which may be used in particular as an overshoe and is adaptable to feet of different foot sizes, comprises a series of elastic gathers 27 along the upper edge defining an opening of the slipper and is characterized in that it comprises at least one second series of elastic gathers 28 placed in an intermediate region between the upper edge and the sole of the slipper. Application in protective slippers or overshoes for use over a short period, in particular in the medical, industrial and nuclear fields.
Inventors
- 👤 Claude Leger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:18
CPC Classifications
A; A43; A43B; A43B3/00; A43B3/16; A43B3/163
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
125 words
A slipper which may be used in particular as an overshoe and is adaptable to feet of different sizes, comprising two susperposed first sheets of a first material, united along a weld line. an upper edge defining an opening, a sole, a first series of elastic gathers along said upper edge, two second sheets of a second material connected one to the other and to the first sheets by said weld line, these first sheets being placed between the second sheets, each second sheet being further connected to the adjacent first sheet by at least one other weld line and at least one second series of elastic gathers located in an intermediate region between said upper edge and said sole along said other weld line.
Claim 2
Dependent Claim
125 words
A slipper which may be used in particular as an overshoe and is adaptable to feet of different sizes, comprising two susperposed first sheets of a first material, united along a weld line. an upper edge defining an opening, a sole, a first series of elastic gathers along said upper edge, two second sheets of a second material connected one to the other and to the first sheets by said weld line, these first sheets being placed between the second sheets, each second sheet being further connected to the adjacent first sheet by at least one other weld line and at least one second series of elastic gathers located in an intermediate region between said upper edge and said sole along said other weld line.
Claim 3
Dependent Claim
36 words
A slipper according to claim 1, said slipper further comprising, in the vicinity of ends of said openings, two tabs in the region of which at least one weld between said two first sheets is formed.
Claim 4
Dependent Claim
22 words
A slipper according to claim 1, wherein said second sheets define the sole and a part of an upper of the slipper.
Claim 5
Dependent Claim
22 words
A slipper according to claim 1, wherein the first material is an aeration providing material and wherein the second material is fluidtight.
Claim 6
Dependent Claim
28 words
A slipper according to claim 1 wherein the slipper comprises a second series of elastic gathers located in an intermediate region between said upper edge and said sole.
Claim 7
Dependent Claim
18 words
A slipper according to claim 5 wherein said two series of gathers are roughly parallel to each other.
Claim 8
Dependent Claim
25 words
A slipper according to claim 6 wherein the second series of gathers is disposed in the vicinity of an upper edge of said second sheets.
Claim 9
Dependent Claim
20 words
A slipper according to claim 5 wherein said second series is disposed along the upper edge of said second sheets.
Claim 10
Dependent Claim
21 words
A slipper according to claim 5 wherein said material is an aeration providing material and said second material is fluid tight.
Claim 11
Dependent Claim
124 words
A disposable fluid-tight overshoe comprising an outer portion and an inner portion, each of said outer and inner portions comprising two superposed sheets of weldable material united along a weld line, said inner portion having at an upper edge an opening and at the lower end an inner sole, an elastic band fixed to said upper edge of said inner portion and forming a series of gathers, said outer portion being of liquid-tight material and united at the bottom portion in a common weld line with said inner portion to define an outer sole, the upper edge of said outer portion being intermediate the sole and upper portion of said inner portion and having fixed thereto an elastic band forming a series of gathers.
Claim 12
Dependent Claim
124 words
A disposable fluid-tight overshoe comprising an outer portion and an inner portion, each of said outer and inner portions comprising two superposed sheets of weldable material united along a weld line, said inner portion having at an upper edge an opening and at the lower end an inner sole, an elastic band fixed to said upper edge of said inner portion and forming a series of gathers, said outer portion being of liquid-tight material and united at the bottom portion in a common weld line with said inner portion to define an outer sole, the upper edge of said outer portion being intermediate the sole and upper portion of said inner portion and having fixed thereto an elastic band forming a series of gathers.
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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) | 1989-10-13 | 1990-04-14 | 1990-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-13 | 1994-04-14 | 1994-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-13 | 1998-04-14 | 1998-10-14 | $7700.00 | Window Closed / Lapsed |