US4030212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One-piece sandal made from a flat sheet
Assignee: Individual
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Filing: 1976-08-26
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Granted: 1977-06-21
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Expires: 1996-08-26
Abstract
Abstract A sandal made from a single flat sheet of relatively soft and resilient material characterized in that two separate portions of the sheet are partially cut away so that their movable ends may be bent upwardly and releasably interengaged, the remaining flat portion of the sheet then providing the sole member of a sandal while the upwardly bent portions provide strap means for retaining the sandal upon the foot of a wearer.
Inventors
- 👤 Kakutaro Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:37
CPC Classifications
A; A43; A43B; A43B3/00; A43B3/10; A43B3/101; A43B3/106
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
132 words
A one-piece sandal made from a flat sheet of relatively soft, resilient material, characterized in that: said sheet forms a sole member of such size and shape as to extend underneath both the heel and toes of a wearer's foot, said sheet also having two further extending portions which are partially cut away from said sole member such that one end of each said portion remains integral with said sole member while the other end thereof is movable relative to said sole member; said two further extending sheet portions being adapted to form strap means extending above said sole member just rearwardly of the toe portion thereof; said movable ends of said two sheet portions also being of such configuration as to cooperatively form latch means for releasably securing the same together.
Claim 2
Dependent Claim
132 words
A one-piece sandal made from a flat sheet of relatively soft, resilient material, characterized in that: said sheet forms a sole member of such size and shape as to extend underneath both the heel and toes of a wearer's foot, said sheet also having two further extending portions which are partially cut away from said sole member such that one end of each said portion remains integral with said sole member while the other end thereof is movable relative to said sole member; said two further extending sheet portions being adapted to form strap means extending above said sole member just rearwardly of the toe portion thereof; said movable ends of said two sheet portions also being of such configuration as to cooperatively form latch means for releasably securing the same together.
Claim 3
Dependent Claim
153 words
A one-piece sandal made from a flat sheet of relatively soft, resilient material, characterized in that: said sheet forms a sole member of such size and shape as to extend underneath both the heel and toes of a wearer's foot, said sheet also having a forwardly extending stem portion whose rearward end is secured to said sole member as an integral part thereof, said sheet also having a rearwardly extending loop portion whose forward ends are secured to said sole member as an integral part thereof; the forward end of said stem portion and the rearward end of said loop portion being movable upwardly relative to said sole member, and having latch means formed thereon for releasably securing the same together; said stem portion and said loop portion then cooperatively forming strap means which extends over the foot of the wearer at a location rearwardly of the toe portion of said sole member.
Claim 4
Dependent Claim
153 words
A one-piece sandal made from a flat sheet of relatively soft, resilient material, characterized in that: said sheet forms a sole member of such size and shape as to extend underneath both the heel and toes of a wearer's foot, said sheet also having a forwardly extending stem portion whose rearward end is secured to said sole member as an integral part thereof, said sheet also having a rearwardly extending loop portion whose forward ends are secured to said sole member as an integral part thereof; the forward end of said stem portion and the rearward end of said loop portion being movable upwardly relative to said sole member, and having latch means formed thereon for releasably securing the same together; said stem portion and said loop portion then cooperatively forming strap means which extends over the foot of the wearer at a location rearwardly of the toe portion of said sole member.
Claim 5
Dependent Claim
58 words
A sandal as in claim 2 wherein said forward ends of said loop portion are secured to opposite sides of said sole member near the heel portion thereof, and in the wearing position of said sandal the rearward end of said loop portion is bent forwardly above said sole member to said location rearwardly of the toe portion.
Claim 6
Dependent Claim
60 words
A sandal as in claim 2 wherein said stem portion is cut away from said sole member near the lateral center of the toe portion thereof and along a pair of generally parallel lines, and in the wearing position of said sandal its forward end is bent rearwardly above said sole member to said location rearwardly of the toe portion.
Claim 7
Dependent Claim
30 words
A sandal as in claim 2 wherein said stem portion is provided with a hook and said loop portion is provided with a notch adapted to releasably retain said hook.
Claim 8
Dependent Claim
73 words
A sandal as in claim 2 wherein both said stem portion and said loop portion are cut away from said sole member along a pair of generally parallel lines, the longitudinally inward ends of said lines being curved so as to terminate in an essentially lateral direction, so that the tendency of said lines to be extended by a tearing action in response to a pulling force on said strap means is minimized.
Claim 9
Dependent Claim
60 words
A sandal as in claim 3 wherein said stem portion is cut away from said sole member near the lateral center of the toe portion thereof and along a pair of generally parallel lines, and in the wearing position of said sandal its forward end is bent rearwardly above said sole member to said location rearwardly of the toe portion.
Claim 10
Dependent Claim
30 words
A sandal as in claim 3 wherein said stem portion is provided with a hook and said loop portion is provided with a notch adapted to releasably retain said hook.
Claim 11
Dependent Claim
73 words
A sandal as in claim 5 wherein both said stem portion and said loop portion are cut away from said sole member along a pair of generally parallel lines, the longitudinally inward ends of said lines being curved so as to terminate in an essentially lateral direction, so that the tendency of said lines to be extended by a tearing action in response to a pulling force on said strap means is minimized.
Claim 12
Dependent Claim
30 words
A sandal as in claim 7 wherein said stem portion is provided with a hook and said loop portion is provided with a notch adapted to releasably retain said hook.
Claim 13
Dependent Claim
73 words
A sandal as in claim 7 wherein both said stem portion and said loop portion are cut away from said sole member along a pair of generally parallel lines, the longitudinally inward ends of said lines being curved so as to terminate in an essentially lateral direction, so that the tendency of said lines to be extended by a tearing action in reponse to a pulling force on said strap means is minimized.
Claim 14
Dependent Claim
30 words
A sandal as in claim 11 wherein said stem portion is provided with a hook and said loop portion is provided with a notch adapted to releasably retain said hook.
Claim 15
Independent Claim
136 words
The method of manufacturing a sandal from a single flat sheet of relatively soft, resilient material, comprising the steps of: cutting the sheet to about the configuration of the under side of the wearer's foot, but with some longitudinally forward and longitudinally rearward extension thereof; cutting the forward extension partially away from the remainder of the sheet so that it has an enlarged forward extremity which can be bent upwardly relative to the sheet; and cutting the sheet along the lateral sides and around the rearward edge of the heel portion thereof to provide a loop of material, and also cutting a notch in the lateral center of said loop; so that said stem and said loop may then be bent towards each other and releasably latched together for forming a strap means for the sandal.
Claim 16
Independent Claim
136 words
The method of manufacturing a sandal from a single flat sheet of relatively soft, resilient material, comprising the steps of: cutting the sheet to about the configuration of the under side of the wearer's foot, but with some longitudinally forward and longitudinally rearward extension thereof; cutting the forward extension partially away from the remainder of the sheet so that it has an enlarged forward extremity which can be bent upwardly relative to the sheet; and cutting the sheet along the lateral sides and around the rearward edge of the heel portion thereof to provide a loop of material, and also cutting a notch in the lateral center of said loop; so that said stem and said loop may then be bent towards each other and releasably latched together for forming a strap means for the sandal.
Claim 17
Independent Claim
109 words
The method of manufacturing a sandal from a single sheet of relatively soft and resilient material, comprising the steps of: trimming the sheet to provide a sole portion of such size and configuration as to fit beneath the foot of the wearer, together with two extending portions; partially cutting each of the extending portions away from the sole portion along a pair of generally parallel lines, so that the outward end of said extending portion may be bent upwardly relative to the sole portion; and trimming the outward ends of said extending portions so that, when bent upwardly towards each other, they are adapted to be releasably fastened together.
Claim 18
Independent Claim
109 words
The method of manufacturing a sandal from a single sheet of relatively soft and resilient material, comprising the steps of: trimming the sheet to provide a sole portion of such size and configuration as to fit beneath the foot of the wearer, together with two extending portions; partially cutting each of the extending portions away from the sole portion along a pair of generally parallel lines, so that the outward end of said extending portion may be bent upwardly relative to the sole portion; and trimming the outward ends of said extending portions so that, when bent upwardly towards each other, they are adapted to be releasably fastened together.
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) | 1980-06-20 | 1980-12-20 | 1981-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-20 | 1984-12-20 | 1985-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-20 | 1988-12-20 | 1989-06-21 | $7700.00 | Window Closed / Lapsed |