US4772112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Eyeglass frame including shape-memory elements
Assignee: Marchon Eyewear Inc
•
Filing: 1986-06-19
•
Granted: 1988-09-20
•
Expires: 2006-06-19
Abstract
Abstract Eyeglass frames fabricated from shape-memory alloys which have optimized elastic properties, which exhibit a combination of shape-memory and optimized elastic properties, which utilize the shape-memory property of these alloys in fastening elements or which utilize the flexibility and fatigue resistance of the martensite state of the alloys as a hinge element.
Inventors
- 👤 Robert B. Zider
- 👤 John F. Krumme
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:32
CPC Classifications
G; G02; G02C; G02C1/00; G02C1/06; G02C1/08; G02C1/02; G02C1/023; G02C5/00; G02C5/008; G02C5/02; G02C5/06; G02C5/14; G02C5/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
62 words
An eyeglass frame having at least a portion thereof fabricated from nickel-titanium based shape-memory alloy, said portion being in the work-hardened metallurgical state, said portion having been subjected to at least 30% work-hardening and having a low effective elastic modulus giving a soft, springly feel, said portion having greater than 4% elasticity over a temperature range from -20° C. to +40° C.
Claim 2
Dependent Claim
62 words
An eyeglass frame having at least a portion thereof fabricated from nickel-titanium based shape-memory alloy, said portion being in the work-hardened metallurgical state, said portion having been subjected to at least 30% work-hardening and having a low effective elastic modulus giving a soft, springly feel, said portion having greater than 4% elasticity over a temperature range from -20° C. to +40° C.
Claim 3
Dependent Claim
20 words
An eyeglass frame as in claim 1 wherein said frame includes a pair of temples, said portion comprising said temples.
Claim 4
Dependent Claim
18 words
An eyeglass frame as in claim 1 wherein said frame includes a bridge, said portion comprising said bridge.
Claim 5
Dependent Claim
43 words
An eyeglass frame as in claim 1 wherein said eyeglass frame includes a pair of lens rims and a pair of nose pads, each nose pad connected to a respective rim by a nose pad wire, said portions, comprising said nose pad wires.
Claim 6
Dependent Claim
71 words
An eyeglass frame having at least a portion thereof fabricated from nickel-titanium based shape-memory alloy, said portion being in the work-hardened and heat-treated condition, said portion having been subjected to at least 20% work-hardening followed by a heat-treatment at a temperature not exceeding 400° C. for not less than one hour and having a minimum of 3% heat-recoverable shape-memory, a yield strength greater than 30,000 psi and at least 3% elasticity.
Claim 7
Dependent Claim
71 words
An eyeglass frame having at least a portion thereof fabricated from nickel-titanium based shape-memory alloy, said portion being in the work-hardened and heat-treated condition, said portion having been subjected to at least 20% work-hardening followed by a heat-treatment at a temperature not exceeding 400° C. for not less than one hour and having a minimum of 3% heat-recoverable shape-memory, a yield strength greater than 30,000 psi and at least 3% elasticity.
Claim 8
Dependent Claim
20 words
An eyeglass frame as in claim 5 wherein said frame includes a pair of temples, said portions comprising said temples.
Claim 9
Dependent Claim
18 words
An eyeglass frame as in claim 5 wherein said frame includes a bridge, said portion comprising said bridge.
Claim 10
Dependent Claim
43 words
An eyeglass frame as in claim 5 wherein said eyeglass frame includes a pair of lens rims and a pair of nose pads, each nose pad connected to a respective rim by a nose pad wire, said portions comprising said nose pad wires.
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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) | 1991-09-20 | 1992-03-21 | 1992-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-20 | 1996-03-21 | 1996-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-20 | 2000-03-21 | 2000-09-20 | $7700.00 | Window Closed / Lapsed |