US3170224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary cutting tool
Assignee: NORTH STAR SPECIALTIES Inc
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Filing: 1964-01-15
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Granted: 1965-02-23
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Expires: 1984-01-15
Abstract
No abstract record available.
Inventors
- 👤 Stanley A Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:33
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/10; B23B51/102; Y; Y10; Y10S; Y10S408/00; Y10S408/713; Y10T; Y10T408/00; Y10T408/55; Y10T408/561; Y10T408/86; Y10T408/865; Y10T408/868; Y10T408/89; Y10T408/907
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A ROTARY METAL WORKING TOOL BIT COMPRISING: (3) AN ELONGATED SHAFT HAVING A BIFURCATED OUTER END, (B) A CUTTING HEAD IN THE FORM OF AN ISOSCELES TRIANGLE, THE BASE PORTION OF WHICH HAS A LONGITUDINAL DIMENSION SUBSTANTIALLY GREATER THAN THE TRANSVERSE DIMENSION OF SAID SHAFT AND WHICH IS FORMED TO DEFINE FLAT PARALLEL SIDE SURFACES, (C) THE CONVERGING SIDES OF SAID CUTTING HEAD DEFINING COOPERATING CUTTING EDGES, AND OPPOSITE SIDE PORTIONS OF THE BASE OF SAID HEAD DEFINING COOPERATING SUBSTANTIALLY COPLANAR CUTTING EDGES, (D) SAID CUTTING HEAD BEING MOUNTED IN THE BIFURCATED END OF SAID SHAFT CENTRALLY ALONG THE ALTITUDE THEREOF FOR UNLIMITED PIVOTAL MOVEMENTS IN A PLANE BISECTING THE AXIS OF SAID SHAFT, (E) THE ALTITUDE OF SAID CUTTING HEAD HAVING A DIMENSION CORRESPONDING GENERALLY TO THE TRANSVERESE DIMENSION OF SAID SHAFT, WHEREBY SAID HEAD MAY BE SUBSTANTIALLY RETRACTED INTO THE PROJECTED PLANES OF OPPOSITE SIDES OF SAID SHAFT WHEN SAID HEAD IS PIVOTALLY MOVED TO AN INOPERATIVE POSITION WITH THE BASE THEREOF IN SUBSTANTIAL ALIGNMENT WITH ONE SIDE OF SAID SHAFT.
Claim 2
Dependent Claim
173 words
A ROTARY METAL WORKING TOOL BIT COMPRISING: (3) AN ELONGATED SHAFT HAVING A BIFURCATED OUTER END, (B) A CUTTING HEAD IN THE FORM OF AN ISOSCELES TRIANGLE, THE BASE PORTION OF WHICH HAS A LONGITUDINAL DIMENSION SUBSTANTIALLY GREATER THAN THE TRANSVERSE DIMENSION OF SAID SHAFT AND WHICH IS FORMED TO DEFINE FLAT PARALLEL SIDE SURFACES, (C) THE CONVERGING SIDES OF SAID CUTTING HEAD DEFINING COOPERATING CUTTING EDGES, AND OPPOSITE SIDE PORTIONS OF THE BASE OF SAID HEAD DEFINING COOPERATING SUBSTANTIALLY COPLANAR CUTTING EDGES, (D) SAID CUTTING HEAD BEING MOUNTED IN THE BIFURCATED END OF SAID SHAFT CENTRALLY ALONG THE ALTITUDE THEREOF FOR UNLIMITED PIVOTAL MOVEMENTS IN A PLANE BISECTING THE AXIS OF SAID SHAFT, (E) THE ALTITUDE OF SAID CUTTING HEAD HAVING A DIMENSION CORRESPONDING GENERALLY TO THE TRANSVERESE DIMENSION OF SAID SHAFT, WHEREBY SAID HEAD MAY BE SUBSTANTIALLY RETRACTED INTO THE PROJECTED PLANES OF OPPOSITE SIDES OF SAID SHAFT WHEN SAID HEAD IS PIVOTALLY MOVED TO AN INOPERATIVE POSITION WITH THE BASE THEREOF IN SUBSTANTIAL ALIGNMENT WITH ONE SIDE OF SAID SHAFT.
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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |