US4602441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilated shoe
Assignee: Individual
•
Filing: 1985-04-22
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Granted: 1986-07-29
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Expires: 2005-04-22
Abstract
Abstract The shoe (1) includes a flexible sole (2) containing a cavity (3) which has nearly the same size as the sole. The walls of the cavity are airtight and flexible in such a manner that the portion of the cavity receiving the foot pressure squashes. The top wall, for example of the front portion of the sole, is provided with at least one opening (4) allowing the air to go into the cavity. The side wall, for example of the rear portion of the sole, is provided with at least one opening (5) allowing only the air to go out from the cavity. The shoe ventilated as described is used in sport.
Inventors
- 👤 Sherif M. El Sakkaf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:04
CPC Classifications
A; A43; A43B; A43B7/00; A43B7/06; A43B7/08; A43B7/082
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
155 words
A ventilated shoe with an integrated flexible sole, comprising: a flexible sole containing a cavity having nearly the same form and slightly smaller size as the sole, the walls of the cavity being airtight, flexible and disposed in a way that the portion of the cavity receiving a foot pressure is squashed, and when removing the pressure of the foot the flexible wall reinstate the initial form of the cavity in the portion of the shoe which does not receive the foot pressure, that the top wall of the sole carries at least one opening which can be closed, operating as a one-way valve allowing only the air to go in and preventing the air from going out, and that the sidewall of the sole carries at least one opening which can be closed, operating as a one-way valve allowing only the air to go out and preventing the air from going into the cavity.
Claim 2
Dependent Claim
155 words
A ventilated shoe with an integrated flexible sole, comprising: a flexible sole containing a cavity having nearly the same form and slightly smaller size as the sole, the walls of the cavity being airtight, flexible and disposed in a way that the portion of the cavity receiving a foot pressure is squashed, and when removing the pressure of the foot the flexible wall reinstate the initial form of the cavity in the portion of the shoe which does not receive the foot pressure, that the top wall of the sole carries at least one opening which can be closed, operating as a one-way valve allowing only the air to go in and preventing the air from going out, and that the sidewall of the sole carries at least one opening which can be closed, operating as a one-way valve allowing only the air to go out and preventing the air from going into the cavity.
Claim 3
Dependent Claim
17 words
The ventilated shoe of claim 1, wherein the front upper wall of the shoe contains ventilation holes.
Claim 4
Dependent Claim
40 words
The ventilated shoe of claim 1 or 2, wherein at least one air inlet opening is provided in the front portion of the sole and at least one air outlet opening is provided in the rear portion of the sole.
Claim 5
Dependent Claim
40 words
The ventilated shoe of claim 1 or 2, wherein at least one air inlet opening is provided in the rear portion of the sole and at least one air outlet opening is provided in the front portion of the sole.
Claim 6
Dependent Claim
22 words
The ventilated shoe of claims 1 or 2, wherein several air inlet openings are distributed over the top wall of the sole.
Claim 7
Dependent Claim
168 words
A ventilated shoe with an integrated flexible sole, comprising: a front upper wall containing ventilation holes; a flexible sole containing a cavity having nearly the same form and slightly smaller size as the sole, the walls of the cavity being airtight, flexible and disposed in a way that the portion of the cavity receiving a foot pressure is squashed, and when removing the pressure of the foot the flexible walls reinstate the initial form of the cavity in the portion of the shoe which does not receive the foot pressure, that the front portion of the top wall of the sole carries at least one opening which can be closed, operating as a one-way valve allowing only the air to go in and preventing the air from going out, and that the rear portion of the sole sidewall carries at least one opening which can be closed, operating as a one-way valve allowing only the air to go out and preventing the air from going into the cavity.
Claim 8
Dependent Claim
168 words
A ventilated shoe with an integrated flexible sole, comprising: a front upper wall containing ventilation holes; a flexible sole containing a cavity having nearly the same form and slightly smaller size as the sole, the walls of the cavity being airtight, flexible and disposed in a way that the portion of the cavity receiving a foot pressure is squashed, and when removing the pressure of the foot the flexible walls reinstate the initial form of the cavity in the portion of the shoe which does not receive the foot pressure, that the front portion of the top wall of the sole carries at least one opening which can be closed, operating as a one-way valve allowing only the air to go in and preventing the air from going out, and that the rear portion of the sole sidewall carries at least one opening which can be closed, operating as a one-way valve allowing only the air to go out and preventing the air from going into the cavity.
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) | 1989-07-28 | 1990-01-27 | 1990-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-28 | 1994-01-27 | 1994-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-28 | 1998-01-27 | 1998-07-29 | $7700.00 | Window Closed / Lapsed |