Portable upright boring mill
Abstract
Abstract A PORTABLE UPRIGHT BORING MILL COMPRISES A SPLIT HOLLOW CYLINDER BODY WHICH CAN BE ATTACHED TO THE SHAFT OF A WORKPIECE WHOSE FLANGE IS TO BE MACHINED BY BORING HOLES THEREIN. THE MILL IS MOUNTED ON THE WORKPIECE BY FITTING THE BODY ON THE SHAFT SO THAT IT SURROUNDS THE SAME AND THE BODY COMPRISES A SPINDLE HEAD FOR MACHINING THE HOLES IN THE FLANGE. THE BODY CAN BE MOVED ALONG THE WORKPIECE FLANGE BY MEANS OF A TURNING MECHANISM WHICH INCLUDES A DRIVE INSTALLED ON THE MILL BODY AND ENGAGED WITH A GEAR IN TURN ENGAGED WITH A TOOTHED RIM SECURED ON THE WORKPIECE FLANGE. THE BODY RESTS ON SUPPORTS WHICH ARE ARITCULATED TO CARRIAGES WHICH ROLL ON THE FLANGE FOR TRAVEL OF THE MILL THEREON.
Inventors
- 👤 Grigory Yakovlevich Gurvich
- 👤 Leonid Sergeevich Krajukhin
- 👤 Rady Nikolaevich Verbitsky
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |