Patent US3158258A successfully refreshed from Google Patents.
US3158258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wire and method of its production
Assignee: Steel Company of Canada Ltd
•
Filing: 1959-06-17
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Granted: 1964-11-24
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Expires: 1979-06-17
Abstract
No abstract record available.
Inventors
- 👤 Roy M Kelday
- 👤 Frederick L Hayden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:21
CPC Classifications
B; B21; B21C; B21C3/00; B21C3/02; B21C3/04; B21C3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
THE METHOD OF DRAWING WIRE WITH A GENERAL CROSSSECTIONAL SHAPE WHICH IS NON-CIRCULAR AND OF WHICH THE ORIENTATION VARIES HELICALLY ALONG THE LENGTH OF THE WIRE, WHICH COMPRISES DRAWING THROUGH A DIE, HAVING A PASSAGE WHICH IS NON-CIRCULAR IN GENERAL CROSS-SECTIONAL SHAPE OVER A SUBSTANTIAL PART OF ITS WORKING LENGTH AND IS HELICALLY TWISTED ABOUT ITS LONGITUDINAL AXIS THROUGHOUT SAID PART, A WIRE OF WHICH THE GENERAL CROSS-SECTIONAL SHAPE IS CIRCULAR AND OF WHICH THE RADIUS IS SMALLER THAN THE MAXIMUM RADIAL DIMENSION BUT LARGER THAN THE MINIMUM RADIAL DIMENSION OF THE EFFECTIVE CROSSSECTION OF THE DIE PASSAGE, AND PERMITTING SAID DIE TO ROTATE ABOUT THE LONGITUDINAL AXIS OF THE PASSAGE WHILE PREVENTING IT FROM MOVING ALONG SAID AXIS.
Claim 2
Independent Claim
119 words
THE METHOD OF DRAWING WIRE WITH A GENERAL CROSSSECTIONAL SHAPE WHICH IS NON-CIRCULAR AND OF WHICH THE ORIENTATION VARIES HELICALLY ALONG THE LENGTH OF THE WIRE, WHICH COMPRISES DRAWING THROUGH A DIE, HAVING A PASSAGE WHICH IS NON-CIRCULAR IN GENERAL CROSS-SECTIONAL SHAPE OVER A SUBSTANTIAL PART OF ITS WORKING LENGTH AND IS HELICALLY TWISTED ABOUT ITS LONGITUDINAL AXIS THROUGHOUT SAID PART, A WIRE OF WHICH THE GENERAL CROSS-SECTIONAL SHAPE IS CIRCULAR AND OF WHICH THE RADIUS IS SMALLER THAN THE MAXIMUM RADIAL DIMENSION BUT LARGER THAN THE MINIMUM RADIAL DIMENSION OF THE EFFECTIVE CROSSSECTION OF THE DIE PASSAGE, AND PERMITTING SAID DIE TO ROTATE ABOUT THE LONGITUDINAL AXIS OF THE PASSAGE WHILE PREVENTING IT FROM MOVING ALONG SAID AXIS.
References Cited (Backward Citations)
US946631A
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US1394716A
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US1920361A
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US1986987A
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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) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |