US3694099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boring tool
Assignee: Individual
•
Filing: 1970-10-23
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Granted: 1972-09-26
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Expires: 1990-10-23
Abstract
Abstract In general, this invention relates to a tool for forming bores in material, wherein the tool has a shaft, a cutting element mounted on one end of the shaft, and a suction passage in the shaft to remove chips.
Inventors
- 👤 George C Nicholas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:16
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/04; B23B51/0486; Y; Y10; Y10T; Y10T408/00; Y10T408/44; Y10T408/45; Y10T408/453
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
104 words
A boring tool, comprising: a. a long shank with a hollow bore passing longitudinally through its central portion, said shank having a first end which is acceptable to a tool holder of a machine tool, and a second end at which the bore forms an opening, said opening having a peripheral edge, b. two notches provided in the edge, each notch having a first edge portion associated with it on one side and a second edge portion associated with it on the other, said first edge portion extending axially, substantially beyond said second edge portion, and c. a cutting element, carried in the notches.
Claim 2
Dependent Claim
104 words
A boring tool, comprising: a. a long shank with a hollow bore passing longitudinally through its central portion, said shank having a first end which is acceptable to a tool holder of a machine tool, and a second end at which the bore forms an opening, said opening having a peripheral edge, b. two notches provided in the edge, each notch having a first edge portion associated with it on one side and a second edge portion associated with it on the other, said first edge portion extending axially, substantially beyond said second edge portion, and c. a cutting element, carried in the notches.
Claim 3
Dependent Claim
24 words
A boring tool, as recited in claim 1, wherein the said first edge portions associated with the notches are diametrically opposed to one another.
Claim 4
Dependent Claim
17 words
A boring tool as recited in claim 1, wherein said bore is sealed at said first end.
Claim 5
Dependent Claim
17 words
A boring tool as recited in claim 1, wherein said cutting element is a plate of carbide.
Claim 6
Dependent Claim
18 words
A boring tool as recited in claim 1, wherein said cutting element is positioned symmetrically on said shank.
Claim 7
Dependent Claim
41 words
A boring tool as recited in claim 1, wherein said means to apply suction comprises a vacuum pump and a coupling between said shank and said vacuum pump, so that suction is applied to said bore while said shank is rotating.
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) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |