US3877249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Economical stretchable precious-metal rings having enclosed annular voids
Assignee: Paramount Wedding Ring Co Inc
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Filing: 1974-02-22
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Granted: 1975-04-15
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Expires: 1994-02-22
Abstract
Abstract An all-gold ring with substantial saving of gold, but which can be satisfactorily stretched to enlarge its size, is made by providing within the body of the ring narrow internal annular channels spaced apart by supporting ribs. A practical method of manufacture is to assemble and solder together an inner ring and an outer ring, the inner ring being grooved on its outer peripheral face. Gold solder paste of a character to match the ring is smeared on the inner surface of the outer ring. The inner ring is inserted while slightly undersize, so as not to scrape off the solder, and is then enlarged by stretching past its elastic limit to engage the outer ring firmly. The assembly is then heated, fuse-bonding the contacting surfaces throughout their areas.
Inventors
- 👤 Bert W Sager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:08
CPC Classifications
A; A44; A44C; A44C9/00; A44C9/0084; A44C27/00; A44C9/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49588; Y10T29/4959; Y10T29/49593
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
55 words
A precious-metal ring having concealed within its body, for saving metal while retaining good stretchability characteristics, narrow steep-sided encloSed annular voids separated by annular rib means, the rib means reinforcing the ring against collapsing when stretching it to enlarge its size by providing, with annular continuity, metal from outer to inner faces of the ring.
Claim 2
Dependent Claim
55 words
A precious-metal ring having concealed within its body, for saving metal while retaining good stretchability characteristics, narrow steep-sided encloSed annular voids separated by annular rib means, the rib means reinforcing the ring against collapsing when stretching it to enlarge its size by providing, with annular continuity, metal from outer to inner faces of the ring.
Claim 3
Dependent Claim
88 words
A precious-metal ring having concealed within its body, for saving metal while retaining good stretchability characteristics, narrow steep-sided annular grooves separated by annular rib means, the rib means reinforcing the ring against collapsing when stretching it to enlarge its size by providing, with annular continuity, metal from outer to inner faces of the ring; said ring comprising inner and outer ring-parts with the grooves and rib means formed in one of these parts and the rib means bearing on the other of these parts to form enclosed voids.
Claim 4
Dependent Claim
88 words
A precious-metal ring having concealed within its body, for saving metal while retaining good stretchability characteristics, narrow steep-sided annular grooves separated by annular rib means, the rib means reinforcing the ring against collapsing when stretching it to enlarge its size by providing, with annular continuity, metal from outer to inner faces of the ring; said ring comprising inner and outer ring-parts with the grooves and rib means formed in one of these parts and the rib means bearing on the other of these parts to form enclosed voids.
Claim 5
Dependent Claim
110 words
A precious-metal ring having an inner annular ring part and an outer annular ring part, said ring having concealed within its body a plurality of enclosed annular voids for saving a substantial proportion of precious metal, and radially extending means of annular rib form for allowing said ring to be stretched satisfactorily in the manner of stretching a solid ring, said voids being formed from grooves bounded by the sides of said annular ribs on one of said parts and a mating surface on the other of said parts, said ribs and surface being bonded together, said ribs reinforcing the ring against collapsing when stretching it to enlarge its size.
Claim 6
Dependent Claim
110 words
A precious-metal ring having an inner annular ring part and an outer annular ring part, said ring having concealed within its body a plurality of enclosed annular voids for saving a substantial proportion of precious metal, and radially extending means of annular rib form for allowing said ring to be stretched satisfactorily in the manner of stretching a solid ring, said voids being formed from grooves bounded by the sides of said annular ribs on one of said parts and a mating surface on the other of said parts, said ribs and surface being bonded together, said ribs reinforcing the ring against collapsing when stretching it to enlarge its size.
Claim 7
Dependent Claim
102 words
A precious-metal ring having concealed within its body, for saving metal while retaining good stretchability characteristics, narrow steep-sided annular grooves separated by annular rib means, the rib means reinforcing the ring against collapsing when stretching it to enlarge its size by providing, with annular continuity, metal from outer to inner faces of the ring; said ring comprising inner and outer ring-parts engaging one another firmly at their mating surfaces and with mating surfaces fuse-bonded together, with the grooves and rib means formed in one of these parts and the rib means bearing on the other of these parts to form enclosed voids.
Claim 8
Dependent Claim
102 words
A precious-metal ring having concealed within its body, for saving metal while retaining good stretchability characteristics, narrow steep-sided annular grooves separated by annular rib means, the rib means reinforcing the ring against collapsing when stretching it to enlarge its size by providing, with annular continuity, metal from outer to inner faces of the ring; said ring comprising inner and outer ring-parts engaging one another firmly at their mating surfaces and with mating surfaces fuse-bonded together, with the grooves and rib means formed in one of these parts and the rib means bearing on the other of these parts to form enclosed voids.
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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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |