US3602410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method or producing steel fibers
Assignee: Jones and Laughlin Steel Corp
•
Filing: 1967-09-22
•
Granted: 1971-08-31
•
Expires: 1987-09-22
Abstract
Abstract A method of producing steel fibers from steel strip including the steps of advancing a steel strip of a width corresponding to the length of fibers formed therefrom to a support block so that a portion of the strip equal to the width of the fiber formed extends beyond the edge of the block and causing a fracturing means to strike the extending portion of strip so as to sever that portion from the remainder of the strip by means of brittle fracture, whereby to form a steel fiber. By continuously repeating the steps of the process a mass of fibers is produced.
Inventors
- 👤 William E Dennis
- 👤 Eugene J Paliwoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:06
CPC Classifications
B; B23; B23D; B23D25/00; B23D25/14; B23P; B23P17/00; B23P17/04; B23P17/06; Y; Y10; Y10T; Y10T225/00; Y10T225/10; Y10T225/16; Y10T225/30; Y10T225/329; Y10T225/371
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
104 words
A method of producing steel fibers from a steel strip comprising, advancing steel strip of a width corresponding to the length of the fibers formed therefrom to a support block, supporting said strip on the block so that a portion of the strip equal to the width of the fiber to be formed extends beyond the edge of the block, severing said extending portion of strip from the remainder of the strip by means of brittle fracture so as to form a steel fiber by causing a fracturing means to strike said extending portion of strip, and thereafter repeating said advancing and severing steps.
Claim 2
Independent Claim
104 words
A method of producing steel fibers from a steel strip comprising, advancing steel strip of a width corresponding to the length of the fibers formed therefrom to a support block, supporting said strip on the block so that a portion of the strip equal to the width of the fiber to be formed extends beyond the edge of the block, severing said extending portion of strip from the remainder of the strip by means of brittle fracture so as to form a steel fiber by causing a fracturing means to strike said extending portion of strip, and thereafter repeating said advancing and severing steps.
Claim 3
Dependent Claim
31 words
The method of claim 1 wherein the strip is cooled prior to fracturing to a temperature within the temperature range where it undergoes brittle fracture when struck by the fracturing means.
Claim 4
Dependent Claim
20 words
The method of claim 1 wherein the fibers are of a size 1 inch X 0.01 inch X 0.01 inch.
Claim 5
Dependent Claim
38 words
The method of claim 1 wherein the strip is at ambient temperature and the composition of the strip is such to cause it to fracture in a brittle fashion at that temperature when struck by said fracturing means.
Claim 6
Dependent Claim
29 words
The method of claim 4 wherein the steel strip is full hard and contains about 0.12 percent to 0.16 percent phosphorus and about 0.008 percent to 0.012 percent nitrogen.
Claim 7
Dependent Claim
21 words
The method of claim 4 wherein the steel strip is full hard and contains about 0.008 percent to 0.012 percent nitrogen.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |