US4472035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Eyeglass-frame
Assignee: Nippon Gakki Co Ltd
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Filing: 1982-03-15
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Granted: 1984-09-18
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Expires: 2002-03-15
Abstract
Abstract An eyeglass-frame, in particular its each bow is made up of a Ti-Ni base alloy core of super elasticity and high Ni-content sheath cladded together so that it reduces plastic deformation during use and assures high workability in production, thereby the eyeglass-frame constantly resting stably on the wearers facial contour with no increase in discomfort on the wearer.
Inventors
- 👤 Masayuki Takamura
- 👤 Kazuo Kurahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:15
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/01; G; G02; G02C; G02C5/00; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12861; Y10T428/12944
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
50 words
An eyeglass-frame comprising a pair of bows having a core-to-covering clad structure which includes a core made of nickel-titanium base alloy, said nickel-titanium alloy including from 49 to 52 atomic % of nickel, and exhibiting super elasticity at normal temperature and a covering made of nickel or nickel base alloys.
Claim 2
Dependent Claim
50 words
An eyeglass-frame comprising a pair of bows having a core-to-covering clad structure which includes a core made of nickel-titanium base alloy, said nickel-titanium alloy including from 49 to 52 atomic % of nickel, and exhibiting super elasticity at normal temperature and a covering made of nickel or nickel base alloys.
Claim 3
Dependent Claim
38 words
An eyeglass-frame as claimed in claim 1 in which said nickel-titanium alloy for said core further includes at least one of from 0.1 to 5 atomic % of copper and from 0.01 to 0.3 atomic % of chromium.
Claim 4
Dependent Claim
19 words
An eyeglass-frame as claimed in claim 1 in which said covering includes at least 98% by weight of nickel.
Claim 5
Dependent Claim
16 words
An eyeglass-frame as claimed in claim 1 in which said nickel base alloy is nickel-copper alloy.
Claim 6
Dependent Claim
21 words
An eyeglass-frame as claimed in claim 4 in which said nickel-copper alloy includes from 0.5 to 35% by weight of copper.
Claim 7
Dependent Claim
22 words
An eyeglass-frame as claimed in claim 5 in which said nickel-copper alloy further includes from 0.1 to 10% by weight of chromium.
Claim 8
Dependent Claim
16 words
An eyeglass-frame as claimed in claim 1 in which said nickel base alloy is nickel-chromium alloy.
Claim 9
Dependent Claim
21 words
An eyeglass-frame as claimed in claim 7 in which said nickel-chromium alloy includes from 3 to 20% by weight of chromium.
Claim 10
Dependent Claim
52 words
An eyeglass-frame as claimed in claim 8 in which said nickel-chromium alloy further includes at least one of from 0.1 to 2.5% by weight of silver, from 0.05 to 2.0% by weight of beryllium, from 0.01 to 0.8% by weight of mish metal and from 0.01 to 0.8% by weight of tellirium.
Claim 11
Dependent Claim
23 words
An eyeglass-frame as claimed in claim 1 in which the thickness of said covering is in the range from 2 to 150 μm.
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) | 1987-09-18 | 1988-03-19 | 1988-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-18 | 1992-03-19 | 1992-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-18 | 1996-03-19 | 1996-09-18 | $7700.00 | Window Closed / Lapsed |