US3737723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable shoe covering
Assignee: LORTON LABOR Ltd
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Filing: 1972-02-04
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Granted: 1973-06-05
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Expires: 1992-02-04
Abstract
Abstract A disposable protective shoe covering for entirely enclosing the shoe of a wearer is provided wherein a single flat sheet of flexible heat shrinkable material is centerfolded to form a pair of complementary halves having a straight bottom edge adjacent the centerfold and a top edge, defined by the adjacent edges of the sheet halves opposite the fold, which is opened to provide access into the shoe covering. The side edges of the sheet halves, between the top and bottom edges, respectively define the front and back edges of the shoe covering and are heat sealed together (i) at the back edge along an inclined line extending outwardly and rearwardly with respect to the bottom edge, (ii) at the front edge along a first inclined line extending upwardly and rearwardly with respect to the bottom edge and along a second inclined line, defining the instep of the shoe covering, extending from the first line upwardly and rearwardly to the top edge at a greater inclination than the first line, and (iii) adjacent the bottom edge, at the front and rear portions thereof, along lines extending upwardly and outwardly from the bottom edge to their points of interconnection with the first line and the back edge respectively.
Inventors
- 👤 S Kanor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:11
CPC Classifications
A; A43; A43B; A43B3/00; A43B3/16; A43B3/163
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
245 words
A disposable protective shoe covering for enclosing the shoe of a wearer comprising a single flat sheet of flexible heat shrinkable material centerfolded to form a pair of complementary halves and having a straight bottom edge, adjacent the centerfold, and a top edge, defined by the adjacent edges of the sheet halves opposite said fold, with the side edges of said sheet halves, between said top and bottom edges, respectively defining the front and back edges of said shoe covering, said sheet halves being heat sealed together (i) at said back edge along an inclined line extending outwardly and rearwardly with respect to said bottom edge (ii) at Said front edge along a first inclined line, in intermediate portion of the front edge, extending upwardly and rearwardly with respect to said bottom edge and along a second inclined line, defining the instep of the shoe covering, extending from said first line upwardly and rearwardly to said top edge at a greater inclination than said first line and (iii) adjacent said bottom edge, at the front and rear portions thereof, along lines extending upwardly and outwardly from said bottom edge to their points of intersection with said first line and said back edge respectively, said heat seal at the front portion of said bottom edge cooperating with said first line to form a contoured toe portion in the shoe covering which receives and conforms to the toe of a shoe on the foot of a wearer.
Claim 2
Dependent Claim
245 words
A disposable protective shoe covering for enclosing the shoe of a wearer comprising a single flat sheet of flexible heat shrinkable material centerfolded to form a pair of complementary halves and having a straight bottom edge, adjacent the centerfold, and a top edge, defined by the adjacent edges of the sheet halves opposite said fold, with the side edges of said sheet halves, between said top and bottom edges, respectively defining the front and back edges of said shoe covering, said sheet halves being heat sealed together (i) at said back edge along an inclined line extending outwardly and rearwardly with respect to said bottom edge (ii) at Said front edge along a first inclined line, in intermediate portion of the front edge, extending upwardly and rearwardly with respect to said bottom edge and along a second inclined line, defining the instep of the shoe covering, extending from said first line upwardly and rearwardly to said top edge at a greater inclination than said first line and (iii) adjacent said bottom edge, at the front and rear portions thereof, along lines extending upwardly and outwardly from said bottom edge to their points of intersection with said first line and said back edge respectively, said heat seal at the front portion of said bottom edge cooperating with said first line to form a contoured toe portion in the shoe covering which receives and conforms to the toe of a shoe on the foot of a wearer.
Claim 3
Dependent Claim
44 words
The disposable protective shoe covering as defined in claim 1 wherein said adjacent edges of the sheet halves defining the top edge of the shoe covering provide an access opening in the top of the covering for insertion of the shoe on a wearer.
Claim 4
Dependent Claim
60 words
The disposable protective shoe covering as defined in claim 2 including an electrically conductive strip of material secured at one end adjacent said bottom edge, with the other end of said strip being adapted to be positioned through said access opening in contact with the skin of the wearer for conducting static electricity from the wearer''s body to the floor.
Claim 5
Dependent Claim
27 words
The disposable protective shoe covering as defined in claim 2 wherein said material is aligned to shrink to a substantially greater extent in length than in width.
Claim 6
Dependent Claim
101 words
The protective shoe covering as defined in claim 1 wherein the adjacent edges of said sheet halves at the top edge of said shoe covering form a generally triangularly shaped extension on the side of said second line opposite the shoe covering, said second line being located along one side of said extension, a tear line being formed in said sheet halves between said extension and said second line, and said extension being heat sealed along its three sides and having at least one aperture therein to facilitate storage and support of the shoe coverings on a hook prior to use.
Claim 7
Dependent Claim
49 words
The shoe covering as defined in claim 2 wherein said bottom edge is gusseted and the heat seals at the front and rear portions of said bottom edge are formed as pairs of heat seals, between the respective halves of said shoe covering and the adjacent gusseted portion thereof.
Claim 8
Dependent Claim
59 words
The disposable shoe covering as defined in claim 6 including an electrically conductive strip of material secured at one end adjacent said bottom edge, with the other end of said strip being adapted to be positioned through said access opening in contact with the skin of the wearer for conducting static electricity from the wearer''s body to the floor.
Claim 9
Dependent Claim
101 words
The disposable shoe covering as defined in claim 6 wherein the adjacent edges of said sheet halves at the top edge of said shoe covering form a generally triangularly shaped extension on the side of said second line opposite the shoe covering, said second line being located along one side of said extension, a tear line being formed in said sheet halves between said extension and said second line, and said extension being heat sealed along its three sides and having at least one aperture thereon to facilitate storage and support of the shoe coverings on a hook prior to use.
References Cited (Backward Citations)
US3634954A
Cited
US3694939A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |