US4427746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ti-base material for eyeglass-frames and a method for producing same
Assignee: Nippon Gakki Co Ltd
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Filing: 1980-09-26
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Granted: 1984-01-24
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Expires: 2000-09-26
Abstract
Abstract In production of a Ti-base materal for eyeglass-frames of a core and sheath construction by cladding, a combination of Ti or Ti-base alloy for the core and Ni or Ni-base alloy for the sheath effectively prevents formation of fragile intermetallic compounds at the border, thereby greatly increasing the brazing strength of the product for advantageous use as eyeglass-frame parts.
Inventors
- 👤 Masayuki Takamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:25
CPC Classifications
B; B21; B21C; B21C23/00; B21C23/22; B21C33/00; B21C33/004; B32; B32B; B32B15/00; B32B15/01; G; G02; G02C; G02C5/00; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12486; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12861; Y10T428/12903; Y10T428/1291
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
89 words
A Ti-base material for eyeglass-frames comprising a Ti or Ti-base alloy containing 90% by weight or more of Ti core, and a sheath of Ni or an alloy consisting essentially of at least 80% by weight of Ni and at least one of Cr, Cu, Fe, Ag, Si, S, Pb, Pt, Au, Sn, Co, rare earth elements, Mo, Al, Nb and Ti, said sheath in substantially concentric surface directly cladded to said core, the clad ratio of said core to said sheath in the range of 0.7 to 0.99.
Claim 2
Dependent Claim
89 words
A Ti-base material for eyeglass-frames comprising a Ti or Ti-base alloy containing 90% by weight or more of Ti core, and a sheath of Ni or an alloy consisting essentially of at least 80% by weight of Ni and at least one of Cr, Cu, Fe, Ag, Si, S, Pb, Pt, Au, Sn, Co, rare earth elements, Mo, Al, Nb and Ti, said sheath in substantially concentric surface directly cladded to said core, the clad ratio of said core to said sheath in the range of 0.7 to 0.99.
Claim 3
Dependent Claim
24 words
A ti-base material as claimed in claim 1 further comprising a Cu or Cu-base alloy sheath cladded to said Ni or Ni-base alloy sheath.
Claim 4
Dependent Claim
31 words
A Ti-base material as claimed in claim 1 in which said Ti-base alloy for said core contains at least one of Al, Mn, Fe, Cu, Mo, Cr, V, W and C.
Claim 5
Dependent Claim
18 words
A Ti-base material as claimed in claim 1 in which the Ti or Ti-base alloy core is Ti.
Claim 6
Dependent Claim
18 words
A Ti-base material as claimed in claim 4 in which the Ni or Ni-base alloy sheath is Ni.
Claim 7
Dependent Claim
20 words
A Ti-base material as claimed in claim 4 in which the Ni or Ni-base alloy sheath is a Ni-base alloy.
Claim 8
Dependent Claim
18 words
A Ti-base material as claimed in claim 6 in which the Ti or Ti-base alloy core is Ti.
References Cited (Backward Citations)
US2900715A
Cited
US3339271A
Cited
US3584368A
Cited
US3854194A
Cited
US3813258A
Cited
US3905828A
Cited
US3905828B1
Cited
US3949122A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-23 | 1987-07-25 | 1988-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-23 | 1991-07-25 | 1992-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-23 | 1995-07-25 | 1996-01-24 | $7700.00 | Window Closed / Lapsed |