Patent US3600924A successfully refreshed from Google Patents.
US3600924A
Expired / Lapsed
US
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Method of rolling titanium and other rods
Assignee: DENZIL O MARTIN
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Filing: 1969-03-28
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Granted: 1971-08-24
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Expires: 1989-03-28
Abstract
Abstract Titanium and similar rods reduced in diameter by heating to a required temperature and then continuously passing a rod through roll stands to progressively reduce its area without intervening reheating being necessary. The roll stands change the shape of the rod alternately between a round shape and a flat shape, a pair of opposed flat sides of each flat configuration merging smoothly into a pair of opposed rounded sides of relatively large radius of curvature, thereby avoiding the formation of sharp corners as a result of each flattening operation.
Inventors
- 👤 Denzil O Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:09
CPC Classifications
B; B21; B21B; B21B1/00; B21B1/16; B21B1/18; B21B3/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
29 words
The method as defined in claim 1, the radius of curvature of said convexly curved sides being about one-half the thickness of said rod measured across said flattened sides.
Claim 2
Dependent Claim
57 words
The method as defined in claim 1, the major dimension of each of said ovals being about one and one-half times the diameter of the next succeeding round configuration of said rod and the thickness of said rod across said flattened sides being about 0.95 times the diameter of the next succeeding round configuration of said rod.
Claim 3
Dependent Claim
83 words
The method as defined in claim 1, the major dimension of each of said ovals being about one and one-half times the diameter of the next succeeding round configuration of said rod and the thickness of said rod across said flattened sides being about 0.95 times the diameter of the next succeeding round configuration of said rod, the radius of curvature of said convexly curved sides of each of said ovals being about one-half the thickness of said rod across said flattened sides.
Claim 4
Dependent Claim
19 words
The method as defined in claim 1, wherein each reduction in cross-sectional area is about 13 to 15 percent.
Claim 5
Dependent Claim
68 words
The method as defined in claim 1, the major dimension of each of said ovals being about one and one-half times the diaMeter of the next succeeding round configuration of said rod and the thickness of said rod across said flattened sides being about 0.95 times the diameter of the next succeeding round configuration of said rod, each reduction in cross-sectional area being about 13 to 15 percent.
Claim 6
Dependent Claim
94 words
The method as defined in claim 1, the major dimension of each of said ovals being about one and one-half times the diameter of the next succeeding round configuration of said rod and the thickness of said rod across said flattened sides being about 0.95 times the diameter of the next succeeding round configuration of said rod, the radius of curvature of said convexly curved sides of each of said ovals being about one-half the thickness of said rod across said flattened sides, each reduction in cross-sectional area being about 13 to 15 percent.
Claim 7
Dependent Claim
66 words
The method as defined in claim 1, the rollers of successive sets being disposed at 90* to each other the sets of rollers alternating between opposed cylindrical rollers to flatten the rod and produce the oval configuration and opposed peripherally grooved rollers to produce the round configuration, each set of said grooved rollers acting upon the opposed convexly curved sides of said oval rod passing therebetween.
Claim 8
Dependent Claim
88 words
The method as defined in claim 1, the rollers of successive sets being disposed at 90* to each other, the sets of rollers alternating between opposed cylindrical rollers to flatten the rod and produce the oval configuration and opposed peripherally grooved rollers to produce the round configuration, each set of said grooved rollers acting upon the opposed convexly curved sides of said oval rod passing therebetween, the radius of curvature of said convexly curved sides being about one-half the thickness of said rod measured across said flattened sides.
Claim 9
Dependent Claim
116 words
The method as defined in claim 1, the rollers of successive sets being disposed at 90* to each other, the sets of rollers alternating between opposed cylindrical rollers to flatten the rod and produce the oval configuration and opposed peripherally grooved rollers to produce the round configuration, each set of said grooved rollers acting upon the opposed convexly curved sides of said oval rod passing therebetween, the major dimension of each of said ovals being about one and one-half times the diameter of the next succeeding round configuration of said rod and the thickness of said rod across said flattened sides being about 0.95 times the diameter of the next succeeding round configuration of said rod.
Claim 10
Independent Claim
157 words
The method of reducing the diameter of a round rod comprising heating the rod to elevate its temperature to a desired value, passing said heated rod between successive sets of opposed rollers to progressively decrease the cross-sectional area of the rod and shape the rod alternately between round and oval cross-sectional configurations, each of said oval configurations having opposed flattened sides and opposed convexly curved sides merging smoothly into said flattened sides, the rollers of successive sets being disposed at 90* to each other, the sets of rollers alternating between opposed cylindrical rollers to flatten the rod and produce the oval configuration and opposed peripherally grooved rollers to produce the round configuration, each set of said grooved rollers acting upon the opposed convexly curved sides of said oval rod passing therebetween, the radius of curvature of said convexly curved sides of each of said ovals being about one-half the thickness of said rod across said flattened sides.
Claim 11
Independent Claim
143 words
The method of reducing the diameter of a round rod comprising heating the rod to elevate its temperature to a desired value, passing said heated rod between successive sets of opposed rollers to progressively decrease the cross-sectional area of the rod and shape the rod alternately between round and oval cross-sectional configurations, each of said oval configurations having opposed flattened sides and opposed convexly curved sides merging smoothly into said flattened sides, the rollers of successive sets being disposed at 90* to each other, the sets of rollers alternating between opposed cylindrical rollers to flatten the rod and produce the oval configuration and opposed peripherally grooved rollers to produce the round configuration, each set of said grooved rollers acting upon the opposed convexly curved sides of said oval rod passing therebetween, wherein each reduction in cross-sectional area is about 13 to 15 percent.
Claim 12
Dependent Claim
57 words
the method as defined in claim 12, the major dimension of each of said ovals being about one and one-half times the diameter of the next succeeding round configuration of said rod and the thickness of said rod across said flattened sides being about 0.95 times the diameter of the next succeeding round configuration of said rod.
Claim 13
Dependent Claim
29 words
The method as defined in claim 12, the radius of curvature of said convexly curved sides being about one-half the thickness of said rod measured across said flattened sides.
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) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |