Patent US3315548A successfully refreshed from Google Patents.
US3315548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making band saw blade
Assignee: Contour Saws Inc
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Filing: 1964-12-07
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Granted: 1967-04-25
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Expires: 1984-12-07
Abstract
No abstract record available.
Inventors
- 👤 Royal A Anderson
- 👤 Eugene N Connoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:42
CPC Classifications
B; B23; B23D; B23D65/00; B23D61/00; B23D61/12; B23D61/123; B23D61/125; B23D63/00; Y; Y10; Y10T; Y10T407/00; Y10T407/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
205 words
THE METHOD OF MAKING A BAND SAW BLADE WHEREIN (1) A WIRE OF HIGH SPEED CUTTING TOOL STEEL IS WELDED DIRECTLY TO ONE EDGE OF A FLEXIBLE ALLOY STEEL BAND OF SUBSTANTIALLY UNIFORM WIDTH AND THICKNESS TO FORM A BIMETAL BAND, AND (2) AFTER STRAIGHTENING AND ANNEALING, THE RESULTING BIMETAL BAND HAS TEETH OF THE DESIRED SIZE AND SHAPE FORMED IN THE EDGE THEREOF AT WHICH THE TOOL STEEL WIRE IS LOCATED TO FORM A SAW BLADE IN WHICH ONLY THE TIPS OF THE TEETH ARE FORMED OF THE TOOL STEEL, SAID METHOD BEING CHARACTERIZED BY: A. THE USE OF AN ELECTRON BEAM TO WELD THE HIGH SPEED STEEL WIRE TO THE EDGE OF THE BAND; AND B. SIMULTANEOUSLY DEVELOPING IN THE TOOL STEEL TOOTH TIPS THE METALLURGICAL CHARACTERISTICS OF CLASSICALLY HEAT TREATED HIGH SPEED STEEL ALONG WITH MAXIMUM HARDNESS, AND BRINGING THE REMAINDER OF THE SAW BLADE TO A HARDNESS ON THE ORDER OF 44-45 ROCKWELL C BY (1) PASSING THE SAW BLADE LENGTHWISE ONCE THROUGH THE MUFFLE OF A HEAT TREATING FURNACE IN WHICH THE FINAL MUFFLE TEMPERATURE IS MAINTAINTED AT A SUBSTANTIALLY CONSTANT LEVEL AND AT A SELECTED VALUE IN THE RANGE OF 2150*-2275* F.; AND (2) THEREAFTER TEMPERING THE SAW BLADE.
Claim 2
Independent Claim
205 words
THE METHOD OF MAKING A BAND SAW BLADE WHEREIN (1) A WIRE OF HIGH SPEED CUTTING TOOL STEEL IS WELDED DIRECTLY TO ONE EDGE OF A FLEXIBLE ALLOY STEEL BAND OF SUBSTANTIALLY UNIFORM WIDTH AND THICKNESS TO FORM A BIMETAL BAND, AND (2) AFTER STRAIGHTENING AND ANNEALING, THE RESULTING BIMETAL BAND HAS TEETH OF THE DESIRED SIZE AND SHAPE FORMED IN THE EDGE THEREOF AT WHICH THE TOOL STEEL WIRE IS LOCATED TO FORM A SAW BLADE IN WHICH ONLY THE TIPS OF THE TEETH ARE FORMED OF THE TOOL STEEL, SAID METHOD BEING CHARACTERIZED BY: A. THE USE OF AN ELECTRON BEAM TO WELD THE HIGH SPEED STEEL WIRE TO THE EDGE OF THE BAND; AND B. SIMULTANEOUSLY DEVELOPING IN THE TOOL STEEL TOOTH TIPS THE METALLURGICAL CHARACTERISTICS OF CLASSICALLY HEAT TREATED HIGH SPEED STEEL ALONG WITH MAXIMUM HARDNESS, AND BRINGING THE REMAINDER OF THE SAW BLADE TO A HARDNESS ON THE ORDER OF 44-45 ROCKWELL C BY (1) PASSING THE SAW BLADE LENGTHWISE ONCE THROUGH THE MUFFLE OF A HEAT TREATING FURNACE IN WHICH THE FINAL MUFFLE TEMPERATURE IS MAINTAINTED AT A SUBSTANTIALLY CONSTANT LEVEL AND AT A SELECTED VALUE IN THE RANGE OF 2150*-2275* F.; AND (2) THEREAFTER TEMPERING THE SAW BLADE.
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) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |