US3295190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of machining metal castings for screw propellers and the like
Assignee: HIGH PERFORMANCE MACHINE Inc A CORP OF MI
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Filing: 1964-01-16
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Granted: 1967-01-03
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Expires: 1984-01-16
Abstract
No abstract record available.
Inventors
- 👤 John T Parsons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:38
CPC Classifications
B; B23; B23C; B23C3/00; B23C3/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49332; Y10T409/00; Y10T409/30; Y10T409/303752
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
THE METHOD OF MACHINING METAL CASTINGS FOR SCREW PROPELLERS AND THE LIKE, AND SIMULTANEOUSLY ADJUSTING THE POSITIONS OF THE MACHINING CUT FOR THE UNBALANCE OF RESIDUAL STRESSES ACCOMPANYING SUCH MACHINING, CHARACTERIZED IN THE STEPS OF MACHINING THE HUB PORTION OF THE CASTING TO ESTABLISH ITS AXIS OF ROTATION AND A TIP TRACKING PLANE, SUPPORTING THE CASTING BY ITS HUB PORTION ALONG SAID AXIS AND WHILE AVOIDING SUPPORT OF ANY BLADE PORTIONS OUTBOARD OF THE STATION BEING MACHINED, COMMENCING MACHINING OF A RELATIVELY SMALL BLADE PORTION NEAR THE ROOT END ADJACENT TO THE HUB PORTION OF SAID BLADE, AND COMPLETING THE MACHINING CUT TO INITIATED TO OBTAIN SUBSTANTIALLY THE FINAL CONTOUR FOR EACH BLADE PORTION FROM THAT PORTION OF THE CASTING WHICH IS THEN PRESENTED IN DESIRED ALIGNMENT WITH THE HUB AXIS, PROGRESSING TO THE NEXT RELATIVELY SMALL BLADE PORTION OUTBOARD OF THE FIRST SUCH PORTION, AND REPEATING THE PROCESS UNTIL THE DESIRED CONTOUR IS ACHIEVED OVER THE WHOLE LENGTH OF THE BLADE, WHEREBY THE BLADE TIP IS CUT FROM THAT PORTION OF THE CASTING TIP MATERIAL WHICH IS FINALLY PRESENTED IN ALIGNMENT WITH THE TIP TRACKING PLANE.
Claim 2
Independent Claim
187 words
THE METHOD OF MACHINING METAL CASTINGS FOR SCREW PROPELLERS AND THE LIKE, AND SIMULTANEOUSLY ADJUSTING THE POSITIONS OF THE MACHINING CUT FOR THE UNBALANCE OF RESIDUAL STRESSES ACCOMPANYING SUCH MACHINING, CHARACTERIZED IN THE STEPS OF MACHINING THE HUB PORTION OF THE CASTING TO ESTABLISH ITS AXIS OF ROTATION AND A TIP TRACKING PLANE, SUPPORTING THE CASTING BY ITS HUB PORTION ALONG SAID AXIS AND WHILE AVOIDING SUPPORT OF ANY BLADE PORTIONS OUTBOARD OF THE STATION BEING MACHINED, COMMENCING MACHINING OF A RELATIVELY SMALL BLADE PORTION NEAR THE ROOT END ADJACENT TO THE HUB PORTION OF SAID BLADE, AND COMPLETING THE MACHINING CUT TO INITIATED TO OBTAIN SUBSTANTIALLY THE FINAL CONTOUR FOR EACH BLADE PORTION FROM THAT PORTION OF THE CASTING WHICH IS THEN PRESENTED IN DESIRED ALIGNMENT WITH THE HUB AXIS, PROGRESSING TO THE NEXT RELATIVELY SMALL BLADE PORTION OUTBOARD OF THE FIRST SUCH PORTION, AND REPEATING THE PROCESS UNTIL THE DESIRED CONTOUR IS ACHIEVED OVER THE WHOLE LENGTH OF THE BLADE, WHEREBY THE BLADE TIP IS CUT FROM THAT PORTION OF THE CASTING TIP MATERIAL WHICH IS FINALLY PRESENTED IN ALIGNMENT WITH THE TIP TRACKING PLANE.
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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |