Patent US3073189A successfully refreshed from Google Patents.
US3073189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drills
Assignee: Stalker Drill Works Ltd
•
Filing: 1961-09-28
•
Granted: 1963-01-15
•
Expires: 1981-09-28
Abstract
No abstract record available.
Inventors
- 👤 Paige Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:25
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/02; B23B51/04; B23B51/0486; B23B51/06; B23B51/063; B23B51/066; Y; Y10; Y10T; Y10T408/00; Y10T408/44; Y10T408/45; Y10T408/455
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
211 words
A FLUTED DRILL COMPRISING A CUTTING LENGTH AND A TUBULAR SHANK-CARRYING LENGTH RIGIDLY JOINED TOGETHER IN COAXIAL RELATION, THE CUTTING LENGTH BEING PROVIDED, AT ITS FREE EXTREMITY, WITH THE CUTTING END OF THE DRILL AND, INTERIORLY THROUGHOUT ITS LENGTH AND ALONGSIDE ITS AXIS, WITH A LUBRICANT-CONVEYING PASSAGE, AND THE TUBULAR SHANK-CARRYING LENGTH BEING PROVIDED AT ITS FREE END WITH A SHANK, THE BORE OF SAID SHANK-CARRYING LENGTH AND A BORE IN THE SHANK TOGETHER FORMING A LUBRICANT-CONVEYING PASSAGE AT THE COMMON AXIS OF THE SHANK-CARRYING LENGTH AND THE SHANK, A LUBRICANT-CONVEYING CROSS PORT BEING PROVIDED IN THE DRILL AT THE JUNCTION OF THE CUTTING LENGTH WITH THE SHANK-CARRYING LENGTH FOR INTERCOMMUNICATING THE LUBRICANT-CONVEYING PASSAGES IN SAID LENGTHS, A FLUTE BEING PROVIDED IN EACH OF SAID LENGTHS OF WHICH THE FLUTE IN THE SHANK-CARRYING LENGTH IS OF SHALLOWER DEPTH THAN AND MERGES AT ONE END INTO THE ADJOINING END OF THE FLUTE IN THE CUTTING LENGTH AND THE FLUTE IN THE SHANK-CARRYING LENGTH BEING OF A CROSS SECTION HAVING A CONVEX SURFACE MEDIALLY OF ITS WIDTH WHICH CONVEX SURFACE IS CONSTITUTED BY AN EXPOSED SURFACE OF THE INTEGRAL HOLLOW CORE OF SAID SHANK-CARRYING LENGTH, THE SAID EXPOSED SURFACE OF SAID CORE RESULTING FROM THE PRESENCE OF THE FLUTE IN SAID SHANK-CARRYING LENGTH.
Claim 2
Dependent Claim
211 words
A FLUTED DRILL COMPRISING A CUTTING LENGTH AND A TUBULAR SHANK-CARRYING LENGTH RIGIDLY JOINED TOGETHER IN COAXIAL RELATION, THE CUTTING LENGTH BEING PROVIDED, AT ITS FREE EXTREMITY, WITH THE CUTTING END OF THE DRILL AND, INTERIORLY THROUGHOUT ITS LENGTH AND ALONGSIDE ITS AXIS, WITH A LUBRICANT-CONVEYING PASSAGE, AND THE TUBULAR SHANK-CARRYING LENGTH BEING PROVIDED AT ITS FREE END WITH A SHANK, THE BORE OF SAID SHANK-CARRYING LENGTH AND A BORE IN THE SHANK TOGETHER FORMING A LUBRICANT-CONVEYING PASSAGE AT THE COMMON AXIS OF THE SHANK-CARRYING LENGTH AND THE SHANK, A LUBRICANT-CONVEYING CROSS PORT BEING PROVIDED IN THE DRILL AT THE JUNCTION OF THE CUTTING LENGTH WITH THE SHANK-CARRYING LENGTH FOR INTERCOMMUNICATING THE LUBRICANT-CONVEYING PASSAGES IN SAID LENGTHS, A FLUTE BEING PROVIDED IN EACH OF SAID LENGTHS OF WHICH THE FLUTE IN THE SHANK-CARRYING LENGTH IS OF SHALLOWER DEPTH THAN AND MERGES AT ONE END INTO THE ADJOINING END OF THE FLUTE IN THE CUTTING LENGTH AND THE FLUTE IN THE SHANK-CARRYING LENGTH BEING OF A CROSS SECTION HAVING A CONVEX SURFACE MEDIALLY OF ITS WIDTH WHICH CONVEX SURFACE IS CONSTITUTED BY AN EXPOSED SURFACE OF THE INTEGRAL HOLLOW CORE OF SAID SHANK-CARRYING LENGTH, THE SAID EXPOSED SURFACE OF SAID CORE RESULTING FROM THE PRESENCE OF THE FLUTE IN SAID SHANK-CARRYING LENGTH.
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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |