US5384977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sports footwear
Assignee: Global Sports Technologies Inc
•
Filing: 1993-06-25
•
Granted: 1995-01-31
•
Expires: 2013-06-25
Abstract
Abstract Improved sports footwear which includes an insert positioned at least in the heel region of a shoe, the insert including an elastically deformable cellular structure arranged within an elastically deformable air-impermeable casing provided with inner projections on opposing faces. The casing is pneumatically connected to controllable mechanism, rigid with the footwear, for varying the air pressure within the casing so as to modify the elastic characteristics of the insert. Each projection on one face thereof is connected to a face portion of an opposing projection.
Inventors
- 👤 Wong K. Chee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:01
CPC Classifications
A; A43; A43B; A43B13/00; A43B13/14; A43B13/18; A43B13/20; A43B13/206; A43B1/00; A43B1/0009; A43B13/141; A43B13/203; A43B21/00; A43B21/24; A43B21/26; A43B21/28
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
255 words
Improved sports footwear which comprises: a shoe having a least one insert positioned at least in a heel region of the shoe, said insert comprising an air-impermeable casing of flexible material; an elastically deformable member contained within said casing; a pump mechanism; and a tube mounted at least partially in the sole for communicating said pump mechanism with said casing for varying air pressure within said casing, so as to modifying the elastic characteristics of the insert, said pump mechanism including an intake valve, a delivery valve for increasing said pressure through said tube, and a bleed mechanism for decreasing said pressure by passing air from said casing through said tube; said pump mechanism having a bellows located on an exterior portion of the shoe and having a first and second opening, said intake valve being positioned in said first opening and said delivery valve being positioned in said second opening; said delivery valve including a block member located outside said bellows and having a chamber connected to said bellows wherein said bleed mechanism is connected to said chamber of said block downstream of said delivery valve; wherein said air-impermeable casing including at least two parts, each part comprising an integral appendix wherein, when joined together, the appendix of each part forms a tube for passage of air from and to the insert; wherein said two parts of said casing comprise, in coinciding positions, hollow projections which are directed towards the interior of the casing and are connected together at inner ends of the projections.
Claim 2
Dependent Claim
255 words
Improved sports footwear which comprises: a shoe having a least one insert positioned at least in a heel region of the shoe, said insert comprising an air-impermeable casing of flexible material; an elastically deformable member contained within said casing; a pump mechanism; and a tube mounted at least partially in the sole for communicating said pump mechanism with said casing for varying air pressure within said casing, so as to modifying the elastic characteristics of the insert, said pump mechanism including an intake valve, a delivery valve for increasing said pressure through said tube, and a bleed mechanism for decreasing said pressure by passing air from said casing through said tube; said pump mechanism having a bellows located on an exterior portion of the shoe and having a first and second opening, said intake valve being positioned in said first opening and said delivery valve being positioned in said second opening; said delivery valve including a block member located outside said bellows and having a chamber connected to said bellows wherein said bleed mechanism is connected to said chamber of said block downstream of said delivery valve; wherein said air-impermeable casing including at least two parts, each part comprising an integral appendix wherein, when joined together, the appendix of each part forms a tube for passage of air from and to the insert; wherein said two parts of said casing comprise, in coinciding positions, hollow projections which are directed towards the interior of the casing and are connected together at inner ends of the projections.
Claim 3
Dependent Claim
25 words
Sports footwear as claimed in claim 1, wherein the pump and the bleed mechanism are both positioned outside the shoe and are rigidly connected therewith.
Claim 4
Dependent Claim
30 words
Sports footwear as claimed in claim 2, which comprises an elastically deformable cover connected to the shoe wherein pump and the bleed mechanism are contained within said elastically deformable cover.
Claim 5
Dependent Claim
15 words
Sports footwear as claimed in claim 1, wherein said bleed mechanism comprises a pusher-type valve.
Claim 6
Dependent Claim
16 words
Sports footwear as claimed in claim 1, wherein said elastically deformable member comprises a cellular structure.
Claim 7
Dependent Claim
21 words
Sports footwear as claimed in claim 5, wherein the cellular structure is enclosed within, but not connected to, the air-impermeable casing.
Claim 8
Dependent Claim
16 words
Sports footwear as claimed in claim 5, wherein said cellular structure comprises a honeycomb cellular structure.
Claim 9
Dependent Claim
29 words
Sports footwear as claimed in claim 1, wherein at least one pair of said hollow projections, upon being connected together, are positioned within a cell of the cellular structure.
References Cited (Backward Citations)
US532429A
Cited
US1598809A
Cited
US1605588A
Cited
US1981300A
Cited
GB601627A
Cited
DE806647C
Cited
US2721400A
Cited
US3253355A
Cited
FR2252820A1
Cited
US4012854A
Cited
US4236326A
Cited
US4187620A
Cited
US4219945A
Cited
US4219945B1
Cited
US4262433A
Cited
US4297797A
Cited
DE2901084A1
Cited
US4391048A
Cited
US4358902A
Cited
US4364186A
Cited
US4397104A
Cited
US4417407A
Cited
US4446634A
Cited
FR2535950A1
Cited
US4472890A
Cited
US4546555A
Cited
DE3427644A1
Cited
US4535553A
Cited
US4610099A
Cited
US4631843A
Cited
US4674206A
Cited
US4924605A
Cited
EP0215995A1
Cited
GB2183446A
Cited
US4768295A
Cited
US4794707A
Cited
US4783910A
Cited
US5158767A
Cited
US4815221A
Cited
US4908962A
Cited
US4887367A
Cited
US4817304A
Cited
US4874640A
Cited
US5010661A
Cited
US4970807A
Cited
US5010662A
Cited
US4912861A
Cited
US4918838A
Cited
US5086574A
Cited
US4956927A
Cited
US4936029A
Cited
US5042176A
Cited
US5113599A
Cited
US4999932A
Cited
US5025575A
Cited
US5253435A
Cited
US4995173A
Cited
US4934072A
Cited
US5092060A
Cited
US5174049A
Cited
US4993173A
Cited
US5233767A
Cited
US5074765A
Cited
US5068981A
Cited
US5067256A
Cited
US5224278A
Cited
US5512083A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-01-30 | 1998-08-01 | 1999-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-01-30 | 2002-08-01 | 2003-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-01-30 | 2006-08-01 | 2007-01-31 | $7700.00 | Window Closed / Lapsed |