WO1998048759B1 - Inflatable boot and method for its manufacture - Google Patents

Inflatable boot and method for its manufacture

Info

Publication number
WO1998048759B1
WO1998048759B1 PCT/US1998/008601 US9808601W WO9848759B1 WO 1998048759 B1 WO1998048759 B1 WO 1998048759B1 US 9808601 W US9808601 W US 9808601W WO 9848759 B1 WO9848759 B1 WO 9848759B1
Authority
WO
WIPO (PCT)
Prior art keywords
bladder
layer
sole
boot
sole portion
Prior art date
Application number
PCT/US1998/008601
Other languages
French (fr)
Other versions
WO1998048759A1 (en
Filing date
Publication date
Priority claimed from US08/850,751 external-priority patent/US5868690A/en
Application filed filed Critical
Priority to AU74697/98A priority Critical patent/AU7469798A/en
Publication of WO1998048759A1 publication Critical patent/WO1998048759A1/en
Publication of WO1998048759B1 publication Critical patent/WO1998048759B1/en

Links

Definitions

  • An inflatable boot comprising:
  • a bladder for encasing at least a portion of a human foot and at least a portion of an
  • the bladder defined by an inner and an outer layer of substantially gas-
  • the wall portions sized and shaped for collectively encasing a human
  • ankle and the sole portion sized and shaped for encasing a sole of a human foot
  • bladder is inflated and defining at least a first and a second passageway
  • the inner and outer layers of the bladder encompass an inflatable interior; 37 the bladder is folded over upon itself about a fold line and joined at a front seam and a
  • the structural interconnection is intermediate the front seam and the rear seam
  • the inner and outer layers of the bladder encompass an inflatable interior
  • the bladder is folded over upon itself about a fold line to define left and right sides of
  • the structural interconnection is in the left side of the bladder, intermediate the front
  • the wall portion is in the right side of the bladder, intermediate the front
  • inflated cushion may form properly under a sole of a foot when a heel of a foot
  • the inflatable boot according to claim 1 further comprising a pocket on the
  • thermo treatment device may be
  • the pocket held in the pocket, and may be sandwiched between the bladder and at least a
  • An inflatable boot comprising:
  • first layer is connected substantially directly to the second layer to form a
  • cushion may be caused to form under a foot that is inserted into the inner boot
  • the first passageway fluidically interconnecting the toe region of
  • the first and second layers of material encompass an interior of the bladder
  • the region of noninflation is a first region of noninflation
  • the first layer is connected substantially directly to the second layer to form a second
  • inflated cushion may form properly under the sole of a foot when the heel of a
  • thermo treatment device may be
  • the pocket held in the pocket, and may be sandwiched between the bladder and at least a
  • a bladder for an inflatable boot comprising:
  • leg portion defined by an inner layer of flexible material and an
  • the inner and outer layers of material encompass an interior of the leg portion and-sole
  • the structural interconnection is a first structural interconnection
  • AMENDED SHEET (ARTICLE f9) 4 1 the inner layer is connected substantially directly to the outer layer to form a second
  • inflated cushion may properly form under the sole of a foot when the heel of a
  • thermo treatment device may be
  • the pocket held in the pocket, and may be sandwiched between the bladder and at least a
  • An inflatable boot comprising:
  • the first and second layers include a substantial inwardly extending notch along a
  • the seam extends along only approximately an upper one-half of the notch
  • paired portions of the seal extend along approximately a lower half of the notch
  • the first and second layers of material encompass an interior of the bladder
  • the first layer is connected substantially directly to the second layer to form a region
  • the region of noninflation is a first region of noninflation
  • the first layer is connected substantially directly to the second layer to form a second
  • thermo treatment device may be
  • the pocket held in the pocket, and may be sandwiched between the bladder and at least a
  • An inflatable boot comprising:
  • a bladder for encasing a human foot the bladder defined by an inner and an outer
  • the inner layer being substantially the
  • the bladder including fluidically
  • the sling when the bladder is uninflated and held by the
  • bladder is inflated, the cushion defined between the sling and the outer layer.

Abstract

An inflatable boot (10) and method for its manufacture, in which the boot (10) includes a bladder (24) for encasing at least a portion of a human foot and at least a portion of an ankle. The bladder (24) is defined by an inner (22) and an outer (20) layer of substantially gas-tight material, and includes fluidically interconnected wall (26) and sole (28) portions. The wall portions (26) are sized and shaped for collectively encasing a human ankle and the sole portion (28) is sized and shaped for encasing a sole of a human foot. A structural interconnection (46) joins the inner layer (22) of the bladder (24) substantially directly to the outer layer (20) at a location interposed the sole portion (28) and one of the wall portions (26) to create a foot-supporting contour for the sole portion (28) of the bladder (24) when the bladder (24) is inflated. The bladder (24) for the boot (10) is manufactured in a flattened condition, and then folded over and joined at the seams to define a boot (10).

Description

AMENDED CLAIMS
[received by the International Bureau on 16 November 1998 (16.11.98); original claims 1-30 replaced by amended claims 1-22 (10 pages)]
1. An inflatable boot comprising:
a bladder for encasing at least a portion of a human foot and at least a portion of an
ankle, the bladder defined by an inner and an outer layer of substantially gas-
tight material, and including wall portions fluidically interconnected to a sole
portion, the wall portions sized and shaped for collectively encasing a human
ankle and the sole portion sized and shaped for encasing a sole of a human foot;
and
a pair of spaced apart structural interconnections, each structural interconnection
joining the inner layer of the bladder substantially directly to the outer layer at
a location interposed the sole portion and one of the wall portions and
interposed the heel region and the toe region, each structural interconnection
creating a foot-supporting contour for the sole portion of the bladder when the
bladder is inflated and defining at least a first and a second passageway, the
first passageway fluidically interconnecting the toe region of the sole portion
substantially directly to one of the wall portions and the second passageway
fluidically interconnecting the heel region of the sole portion substantially
directly to one of the wall portions, allowing relatively unobstructed fluid flow
between the sole portion and the one of the wall portions within the heel region
and within the toe region.
2. The inflatable boot according to claim 1, wherein:
the inner and outer layers of the bladder encompass an inflatable interior; 37 the bladder is folded over upon itself about a fold line and joined at a front seam and a
rear seam; and
the structural interconnection is intermediate the front seam and the rear seam,
displaced from the fold line.
3. The inflatable boot according to claim 1, wherein:
the inner and outer layers of the bladder encompass an inflatable interior;
the bladder is folded over upon itself about a fold line to define left and right sides of
the bladder relative to the fold line, and portions of the left side of the bladder
are joined to matching portions of the right side to define a front seam and a
rear seam;
the structural interconnection is in the left side of the bladder, intermediate the front
seam and the rear seam, displaced from the fold line; and
an additional structural interconnection joining the inner layer of the bladder
substantially directly to the outer layer at a location interposed the sole portion
and the wall portion is in the right side of the bladder, intermediate the front
seam and the rear seam, displaced from the fold line.
4. The inflatable boot according to claim 1, wherein a notch is included in the
periphery of the bladder to provide a visual reference indicating the proper
placement of a heel of a human foot, prior to inflating the bladder, so that an
inflated cushion may form properly under a sole of a foot when a heel of a foot
is held approximately aligned with the notch and the bladder is inflated. 5. The inflatable boot according to claim 1, further comprising a pocket on the
inner layer of material of the bladder so that a thermal treatment device may be
held in the pocket, and may be sandwiched between the bladder and at least a
portion of a lower leg, ankle or foot that is inserted into the bladder, when the
bladder is inflated.
6. An inflatable boot comprising:
a first layer of substantially gas-tight material folded over upon itself to create an inner
boot for encasing a human foot when so folded; and
a second layer of substantially gas-tight material folded over upon the first layer to
create an outer boot for encasing a human foot and the inner boot when so
folded, the second layer joined to the first layer along a continuous seal to
define a substantially gas-tight bladder;
wherein the first layer is connected substantially directly to the second layer to form a
structural interconnection for the bladder substantially separate from the seal,
the structural interconnection operating on the bladder so that a fluid-filled
cushion may be caused to form under a foot that is inserted into the inner boot,
when the bladder is inflated and defining at least a first and a second
passageway, the first passageway fluidically interconnecting the toe region of
the sole portion substantially directly to one of the wall portions and the second
passageway fluidically interconnecting the heel region of the sole portion
substantially directly to one of the wall portions, allowing relatively 39 unobstructed fluid flow between the sole portion and the one of the wall
portions within the heel region and within the toe region.
7. The inflatable boot according to claim 6, wherein:
the first and second layers of material encompass an interior of the bladder;
the region of noninflation is a first region of noninflation; and
the first layer is connected substantially directly to the second layer to form a second
structural interconnection for the bladder substantially separate from the seal
and the first structural interconnection.
8. The inflatable boot according to claim 6, wherein a notch is included in the
periphery of the bladder to provide a visual reference indicating the proper
placement of a heel of a human foot, prior to inflating the bladder, so that an
inflated cushion may form properly under the sole of a foot when the heel of a
foot is held approximately aligned with the notch and the bladder is inflated.
9. The inflatable boot according to claim 6, further comprising a pocket on the
first layer of material of the bladder so that a thermal treatment device may be
held in the pocket, and may be sandwiched between the bladder and at least a
portion of a lower leg, ankle or foot that is inserted into the bladder, when the
bladder is inflated. 40
10. A bladder for an inflatable boot, the bladder comprising:
an inflatable leg portion having an opening through which a human foot may be
inserted, the leg portion defined by an inner layer of flexible material and an
outer layer of material, a portion of the outer layer defining an external surface
of the bladder;
an open-looped, inflatable sole portion contiguous with the leg portion, the sole
portion having a toe and a heel, the sole portion being defined by the inner
layer of material and the outer layer of material;
a structural interconnection connecting the inner layer substantially directly to the
outer layer on the external surface of the bladder, the structural interconnection
located between the leg portion and the sole portion of the bladder, and located
between the toe and heel of the sole portion; and
a first and second passageway, the first passageway fluidically interconnecting the tow
of the sole portion substantially directly to the leg portion and the second
passageway fluidically interconnecting the heel of the sole portion substantially
directly to the leg portion, allowing relatively unobstructed fluid flow between
the sole portion and the leg portion within the heel region and within the toe
region.
11. The bladder according to claim 10, wherein:
the inner and outer layers of material encompass an interior of the leg portion and-sole
portion;
the structural interconnection is a first structural interconnection; and
AMENDED SHEET (ARTICLE f9) 4 1 the inner layer is connected substantially directly to the outer layer to form a second
structural interconnection substantially separate from the first structural
interconnection.
12. The inflatable boot according to claim 10, wherein a notch is included in the
periphery of the bladder to provide a visual reference indicating the proper
placement of a heel of a human foot, prior to inflating the bladder, so that an
inflated cushion may properly form under the sole of a foot when the heel of a
foot is held approximately aligned with the notch and the bladder is inflated.
13. The inflatable boot according to claim 10, further comprising a pocket on the
inner layer of material of the bladder so that a thermal treatment device may be
held in the pocket, and may be sandwiched between the bladder and at least a
portion of a lower leg, ankle or foot that is inserted into the bladder, when the
bladder is inflated.
14. An inflatable boot comprising:
a first layer of substantially gas-tight material folded over upon itself to create an inner
boot for encasing a human foot when so folded; and
a second layer of substantially gas-tight material folded over upon the first layer to
create an outer boot for encasing a human foot and the inner boot when so
folded, the second layer joined to the first layer along a continuous peripheral
seal to define a substantially gas-tight bladder, at least two folded-over, 42 adjacent portions of the bladder substantially directly interconnected to form a
seam defining a portion of the inner and outer boots;
wherein:
the folding over of the first and second layers defines a fold line;
the first and second layers include a substantial inwardly extending notch along a
portion of the seal and including an end of the seam;
the seam extends along only approximately an upper one-half of the notch;
paired portions of the seal extend along approximately a lower half of the notch,
separate from the seam so that the paired portions of the seal may extend in
approximately opposite directions relative to each other, approximately
perpendicular to the seam; and
a portion of the seal foπns a loop extending from the seam to the fold line and back
again, the loop allowing the bladder to expand outwardly to form a fluid-filled
cushion under a foot that is inserted into the inner boot, when the bladder is
inflated.
15. The inflatable boot according to claim 14, wherein:
the first and second layers of material encompass an interior of the bladder;
the first layer is connected substantially directly to the second layer to form a region
of noninflation for the bladder substantially separate from the notch, located
along a line that extends through the notch and is approximately parallel to the
fold line. 43 16. The inflatable boot according to claim 15, wherein the region of noninflation
for the bladder is substantially separate from the seal.
17. The inflatable boot according to claim 15, wherein:
the region of noninflation is a first region of noninflation;
the first layer is connected substantially directly to the second layer to form a second
region of noninflation for the bladder substantially separate from the seal and
the first region of noninflation.
18. The inflatable boot according to claim 14, further comprising a pocket on the
first layer of material of the bladder so that a thermal treatment device may be
held in the pocket, and may be sandwiched between the bladder and at least a
portion of a lower leg, ankle or foot that is inserted into the bladder, when the
bladder is inflated.
19. An inflatable boot comprising:
a bladder for encasing a human foot, the bladder defined by an inner and an outer
layer of substantially gas-tight material, the inner layer being substantially the
same size as the outer layer, and the bladder including fluidically
interconnected wall and sole portions, the wall portions sized and shaped for
collectively encasing a human leg and the sole portion for encasing the bottom
of a human foot; and a platform-defining sling suspended within the bladder, the sling including a pair of
elongate sides connecting a heel region and a toe region of the sling, each
elongate side of the sling being attached to the inner layer interposed a
respective wall portion and the sole portion, and being located inwardly of the
inner layer of the bladder so that a human foot that is inserted into the bladder
may be supported by the sling when the bladder is uninflated and held by the
wall portions, and so that a human foot that is inserted into the bladder may be
supported by a cushion formed by the sole portion of the bladder when the
bladder is inflated, the cushion defined between the sling and the outer layer.
20. The inflatable boot according to claim 19, further comprising a structural
interconnection joining the inner layer of the bladder substantially directly to
the outer layer at a location interposed the sole portion and one of the wall
portions, the structural interconnection, in cooperation with the sling, creating a
foot-supporting contour for the sole portion of the bladder when the bladder is
inflated.
21. The inflatable boot according to claim 19, further comprising a pocket included
on the bladder so that a thermal treatment device may be held in the pocket, the
pocket oriented so that a thermal treatment device may be sandwiched between
the bladder and at least a portion of a lower leg, ankle or foot that is inserted
into the bladder, when the bladder is inflated.

Claims

45 22. An inflatable boot, comprising:
a bladder for encasing a human foot, including an inner layer and an outer layer of
substantially gas-tight material joined by a continuous seal, and including
fluidically interconnected wall and sole portions, the sole portion having a heel
and a toe;
an island seal in the bladder formed by a substantially direct connection between the
outer layer and the inner layer at a location on an external surface of the
bladder interposed the sole portion and one of the wall portions and the heel
and the toe, independent of the continuous seal; and
a first inflatable passageway and a second inflatable passageway fluidically
interconnecting the wall portion and the sole portion, each passageway being
defined by a respective side of the island seal and the continuous seal.
PCT/US1998/008601 1997-04-30 1998-04-28 Inflatable boot and method for its manufacture WO1998048759A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU74697/98A AU7469798A (en) 1997-04-30 1998-04-28 Inflatable boot and method for its manufacture

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/850,751 US5868690A (en) 1997-04-30 1997-04-30 Inflatable boot and method for its manufacture
US08/850,751 1997-04-30

Publications (2)

Publication Number Publication Date
WO1998048759A1 WO1998048759A1 (en) 1998-11-05
WO1998048759B1 true WO1998048759B1 (en) 1998-12-30

Family

ID=25309013

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/008601 WO1998048759A1 (en) 1997-04-30 1998-04-28 Inflatable boot and method for its manufacture

Country Status (3)

Country Link
US (1) US5868690A (en)
AU (1) AU7469798A (en)
WO (1) WO1998048759A1 (en)

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