Patent US5224278A successfully refreshed from Google Patents.
US5224278A
Expired / Lapsed
US
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Midsole having a shock absorbing air bag
Assignee: Individual
•
Filing: 1992-09-18
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Granted: 1993-07-06
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Expires: 2012-09-18
Abstract
Abstract A midsole having a bellows type of shock absorbing air bag and a method for preparation of such a midsole. The present midsole comprises a hexahedral-shaped air bag for absorbing an outer shock and comprising upper and lower parts which are provided with a plurality of vertical bellows members, a plurality of elastic bodies for providing elasticity for the air bag and being received in each bellow member, a plurality of upper and lower caps for causing the elastic bodies to maintain their positions in the bellows members and being mounted on the air bag as engaging with an open end of each bellows member, an air control valve for controlling air charge in or air discharge from the air bag and an air communication pipe for permitting the air bag to communicate with the air control valve by being connected at an end thereof to the air bag and at the other end to the air control valve. The present invention provides a midsole which freely controls its cushioning in accordance with the using object of the shoe and is provided with a shock absorbing air bag having an excellent resilience.
Inventors
- 👤 Pil D. Jeon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:20
CPC Classifications
A; A43; A43B; A43B13/00; A43B13/14; A43B13/18; A43B13/20; A43B13/203
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
152 words
A midsole having a shock absorber comprising: a hexahedral-shaped air bag for absorbing an outer shock, said air bag comprising upper and lower parts which are provided with a plurality of vertical bellows members; a plurality of elastic bodies for providing elasticity for said air bag, each said elastic body being received in each bellow member; a plurality of upper and lower caps for causing said elastic bodies to maintain their positions in the bellows members, each said cap being mounted on the air bag as engaging with an open end of each bellows member; an air control valve for controlling air charge in or air discharge from the air bag; and an air communication pipe for permitting the air bag to communicate with said air control valve, said air communication pipe being connected at an end thereof to the air bag and at the other end to the air control valve.
Claim 2
Dependent Claim
152 words
A midsole having a shock absorber comprising: a hexahedral-shaped air bag for absorbing an outer shock, said air bag comprising upper and lower parts which are provided with a plurality of vertical bellows members; a plurality of elastic bodies for providing elasticity for said air bag, each said elastic body being received in each bellow member; a plurality of upper and lower caps for causing said elastic bodies to maintain their positions in the bellows members, each said cap being mounted on the air bag as engaging with an open end of each bellows member; an air control valve for controlling air charge in or air discharge from the air bag; and an air communication pipe for permitting the air bag to communicate with said air control valve, said air communication pipe being connected at an end thereof to the air bag and at the other end to the air control valve.
Claim 3
Dependent Claim
50 words
A midsole according to claim 1, wherein each said bellows member comprises a cylindrical bellows which extends from said upper part to said lower part of the air bag and receives an integral type of elastic body supported at its upper and lower ends by said upper and lower caps.
Claim 4
Dependent Claim
16 words
A midsole according to claim 2, wherein said integral type of elastic body is a spring.
Claim 5
Dependent Claim
17 words
A midsole according to claim 2, wherein said integral type of elastic body is an elastic rubber.
Claim 6
Dependent Claim
62 words
A midsole according to claim 1, wherein said bellows members comprise frusto-conical bellows protrusions which are provided at the upper and lower parts so as to be opposite to each other, welded to each other with a center ball interposed between each two opposite frusto-conical bellows protrusions and each receives an elastic body which is supported by the upper or lower cap.
Claim 7
Dependent Claim
13 words
A midsole according to claim 5, wherein said elastic body is a spring.
Claim 8
Dependent Claim
14 words
A midsole according to claim 5, wherein said elastic body is an elastic rubber.
Claim 9
Dependent Claim
33 words
A midsole according to claim 2 wherein both said bellows members and said elastic bodies received in the bellows members are regularly arranged on said upper and lower parts of the air bag.
Claim 10
Dependent Claim
46 words
A midsole according to claim 8, wherein both said bellows members and said elastic bodies are arranged along the peripheries of said upper and lower parts of the air bag except for a part at which said air communication pipe is connected to the air bag.
References Cited (Backward Citations)
US733167A
Cited
US1098241A
Cited
US1099180A
Cited
US1338817A
Cited
US4610099A
Cited
US4521979A
Cited
US4680875A
Cited
US4715130A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-07-05 | 1997-01-04 | 1997-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-05 | 2001-01-04 | 2001-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-05 | 2005-01-04 | 2005-07-06 | $7700.00 | Window Closed / Lapsed |