US4047310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fatigue relieving foot appliance
Assignee: Individual
•
Filing: 1976-04-19
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Granted: 1977-09-13
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Expires: 1996-04-19
Abstract
Abstract A podiatric device is provided comprising a sandal having a resilient insole moulded to the contour of the plantar surface of the foot, moderately raised under the metatarsal arch of the foot having a plurality of uniformly distributed rigid studs extending upwardly from said insole. The studs extend a moderate distance from the insole's surface and have rounded heads. The studs are set in alternating staggered columns. The sandal aids in relieving fatigue, massaging the feet, and in improving the kidney function.
Inventors
- 👤 Hyeng P. Sunoo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:43
CPC Classifications
A; A43; A43B; A43B7/00; A43B7/14; A43B7/1405; A43B7/141; A43B17/00; A43B17/02; A43B3/00; A43B3/12; A43B3/128; A43B7/1415; A43B7/142; A43B7/143; A43B7/1445; A43B7/1455; A43B7/146
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
99 words
A podiatric sandal for relieving foot fatigue comprising: an outer sole; an inner sole of resilient material supported by the outer sole substantially conforming to the contour of the plantar surface of the foot except for being mildly elevated in selected massaging areas defined by the area under the metatarsal arch and between the second and fourth metatarsal; a plurality of rigid, rounded-head protuberances substantially uniformly distributed in said massaging areas in staggered columns extending above said inner sole for encountering said plantar surface; and at least one strap bonded to said outer sole for mounting on the foot.
Claim 2
Dependent Claim
99 words
A podiatric sandal for relieving foot fatigue comprising: an outer sole; an inner sole of resilient material supported by the outer sole substantially conforming to the contour of the plantar surface of the foot except for being mildly elevated in selected massaging areas defined by the area under the metatarsal arch and between the second and fourth metatarsal; a plurality of rigid, rounded-head protuberances substantially uniformly distributed in said massaging areas in staggered columns extending above said inner sole for encountering said plantar surface; and at least one strap bonded to said outer sole for mounting on the foot.
Claim 3
Dependent Claim
36 words
A podiatric sandal according to claim 1, wherein said protuberances extend above said inner sole from about 2 to 6mm, and the radius of the rounded head is in the range from about 1.5 to 2.5mm.
Claim 4
Dependent Claim
27 words
A podiatric sandal according to claim 2, wherein said protuberances extend upwards from about 3 to 5mm and the radius of said rounded head is about 2mm.
Claim 5
Dependent Claim
34 words
A podiatric sandal according to claim 2, wherein the protuberances are spaced apart from about 3 to 6mm in said columns and each of said columns is spaced apart from about 3 to 6mm.
Claim 6
Dependent Claim
30 words
A podiatric sandal according to claim 4, wherein each of the protuberances is spaced apart in each column about 4mm and each of said columns is spaced apart about 4mm.
Claim 7
Dependent Claim
17 words
A podiatric sandal according to claim 1, wherein said protuberances consist essentially of a hard moulded plastic.
Claim 8
Dependent Claim
22 words
A podiatric sandal according to claim 1, wherein said protuberances extend through said inner sole and are bonded to said outer sole.
Claim 9
Dependent Claim
138 words
A podiatric sandal for relieving foot fatigue comprising: an outer sole; an inner sole bonded to said outer sole, said inner sole being of resilient material and having a thickness of at least about 1/8 inch and substantially conforming to the contour of the plantar surface of the foot except for being elevated from about 2 to 3mm at the maximum from the normal contour in a massaging area under the metatarsal arch and between the second and fourth metatarsal; a plurality of rigid, rounded-head protuberances substantially uniformly distributed in the massaging area in staggered columns spaced apart about 4mm, said protuberances being spaced apart in each of said columns about 4mm and extending above said inner sole from about 3 to 5mm; and at least one strap connected to said outer sole for mounting on the foot.
Claim 10
Dependent Claim
138 words
A podiatric sandal for relieving foot fatigue comprising: an outer sole; an inner sole bonded to said outer sole, said inner sole being of resilient material and having a thickness of at least about 1/8 inch and substantially conforming to the contour of the plantar surface of the foot except for being elevated from about 2 to 3mm at the maximum from the normal contour in a massaging area under the metatarsal arch and between the second and fourth metatarsal; a plurality of rigid, rounded-head protuberances substantially uniformly distributed in the massaging area in staggered columns spaced apart about 4mm, said protuberances being spaced apart in each of said columns about 4mm and extending above said inner sole from about 3 to 5mm; and at least one strap connected to said outer sole for mounting on the foot.
Claim 11
Dependent Claim
98 words
A shoe insert for relieving foot fatigue and massaging the foot comprising; an inner sole of a resilient material, said inner sole having a thickness of from about 1 to 5mm of substantially resilient material and shaped substantially conforming to the contour of the plantar surface of the foot except for being mildly elevated under the metatarsal arch and between the second and fourth metatarsal, and having a plurality of rigid, rounded-head protuberances substantially uniformly distributed in the area under the metatarsal arch and between the second and fourth metatarsal in staggered columns extending above said inner sole.
Claim 12
Dependent Claim
98 words
A shoe insert for relieving foot fatigue and massaging the foot comprising; an inner sole of a resilient material, said inner sole having a thickness of from about 1 to 5mm of substantially resilient material and shaped substantially conforming to the contour of the plantar surface of the foot except for being mildly elevated under the metatarsal arch and between the second and fourth metatarsal, and having a plurality of rigid, rounded-head protuberances substantially uniformly distributed in the area under the metatarsal arch and between the second and fourth metatarsal in staggered columns extending above said inner sole.
Claim 13
Dependent Claim
63 words
An insert according to claim 9, wherein said protuberances extend above said inner sole for about 1 to 5mm and the radius of the rounded head is in the range from about 1.5 to 2.5mm and when the protuberances are spaced apart from about 3 to 6mm in said columns and each of said columns is spaced apart from about 3 to 6mm.
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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) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |