US4918841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Athletic shoe with improved midsole
Assignee: Individual
•
Filing: 1989-01-30
•
Granted: 1990-04-24
•
Expires: 2009-01-30
Abstract
Abstract A novel athletic shoe is disclosed which has a midsole in which is provided a resilient member having parallel grooves which in cross-section have a triangular profile.
Inventors
- 👤 Jerome P. Turner
- 👤 John W. Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:25
CPC Classifications
A; A43; A43B; A43B13/00; A43B13/14; A43B13/18; A43B13/181
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
127 words
An athletic shoe comprising an upper shoe connected to a multilayer sole, said multilayer sole comprising in combination: (a) an inner sole; (b) an outer sole; (c) a midsole intermediate between said inner and outer sole, said midsole having a cavity which is provided with a resilient member said resilient member comprising a first module having one or more parallel grooves which in cross-section have a triangular profile and a second module having one or more parallel raised strips which in cross-section have a triangular profile, said second module being joined to said first module by insertion of the raised strips of said second module into the grooves of said first module, and said joined first and second modules being located in said cavity of said midsole.
Claim 2
Dependent Claim
127 words
An athletic shoe comprising an upper shoe connected to a multilayer sole, said multilayer sole comprising in combination: (a) an inner sole; (b) an outer sole; (c) a midsole intermediate between said inner and outer sole, said midsole having a cavity which is provided with a resilient member said resilient member comprising a first module having one or more parallel grooves which in cross-section have a triangular profile and a second module having one or more parallel raised strips which in cross-section have a triangular profile, said second module being joined to said first module by insertion of the raised strips of said second module into the grooves of said first module, and said joined first and second modules being located in said cavity of said midsole.
Claim 3
Dependent Claim
17 words
The athletic shoe according to claim 1 wherein said second module is made of a resilient elastomers.
Claim 4
Dependent Claim
19 words
The athletic shoe according to claim 2 wherein the cavity in the midsole is provided under the calcaneous bone.
Claim 5
Dependent Claim
23 words
The athletic shoe of claim 2 wherein the first module is made of a plastic having a Shore A hardness of 50°-60° C.
Claim 6
Dependent Claim
52 words
The athletic shoe according to claim 1 wherein said joined first and second modules are mounted transversely across the width of said athletic shoe such that the parallel grooves of said first module and the parallel raised strips of said second module are perpendicular to the longitudinal axis of said athletic shoe.
Claim 7
Dependent Claim
28 words
The athletic shoe according to claim 1 wherein a bottom portion of said outer sole has a clear plastic window to show said joined first and second modules.
Claim 8
Dependent Claim
61 words
The athletic shoe according to claim 5 wherein said first module is clear plastic and has number triangularly shaped parallel grooves, said second module is a rubber containing material and has number triangularly shaped parallel raised strips with blunted tips, and the bottom portion of said outer sole has a clear plastic window to show said joined first and second modules.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-23 | 1993-10-23 | 1994-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-23 | 1997-10-23 | 1998-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-23 | 2001-10-23 | 2002-04-24 | $7700.00 | Window Closed / Lapsed |