Patent US3809101A successfully refreshed from Google Patents.
US3809101A
Expired / Lapsed
US
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Nail file
Assignee: Individual
•
Filing: 1973-01-08
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Granted: 1974-05-07
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Expires: 1993-01-08
Abstract
Abstract A novel nail file comprising an abrasive holding member and an abrasive paper characterized in that an elastic layer is interposed between said abrasive holding member and abrasive paper.
Inventors
- 👤 T Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:13
CPC Classifications
A; A45; A45D; A45D29/00; A45D29/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
34 words
In a nail file comprising an abrasive holding member having a handle portion and an abrasive sheet, the improvement comprising an elastic cushioning layer secured between said abrasive holding member and said abrasive sheet.
Claim 2
Dependent Claim
34 words
In a nail file comprising an abrasive holding member having a handle portion and an abrasive sheet, the improvement comprising an elastic cushioning layer secured between said abrasive holding member and said abrasive sheet.
Claim 3
Dependent Claim
26 words
A nail file as defined in claim 1, wherein said abrasive holding member is reduced in its width and thickness toward the tip of said file.
Claim 4
Dependent Claim
30 words
A nail file as defined in claim 1 comprising two pairs of said elastic cushioning layer and said abrasive sheet, one pair positioned on each side of said holding member.
Claim 5
Dependent Claim
19 words
A nail file as claimed in claim 1, wherein said elastic cushioning layer comprises a layer of urethane foam.
Claim 6
Dependent Claim
26 words
A nail file as claimed in claim 1, wherein said elastic cushioning layer is elastically deformable under the shear forces occuring during use of said file.
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) | 1977-05-06 | 1977-11-05 | 1978-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-06 | 1981-11-05 | 1982-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-06 | 1985-11-05 | 1986-05-07 | $7700.00 | Window Closed / Lapsed |