Patent US3590671A successfully refreshed from Google Patents.
US3590671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Counterbore or burr removal tool
Assignee: Individual
•
Filing: 1969-08-05
•
Granted: 1971-07-06
•
Expires: 1989-08-05
Abstract
Abstract A novel counterbore or burr removal tool is disclosed, the tool having a cylindrical head portion and an axially extending shaft connected thereto with at least two knife inserts detachably connected to the facing side of the head portion. The head portion contains a diametrically extending slit which extends into the shaft portion. A screw penetrates the head portion and extends transversely to the axis of the tool for altering the clearance angle of the knives. The facing side of the head portion is provided with ring or annular guide grooves and ribs which engage corresponding ribs and grooves on each knife, the knives being firmly secured to the head portion by means of screws.
Inventors
- 👤 Marcel Wahli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:22
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/10; B23B2251/00; B23B2251/50; Y; Y10; Y10T; Y10T408/00; Y10T408/89; Y10T408/909; Y10T408/9093
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
110 words
A chamfer tool having a cylindrical head portion and a shaft axially connected thereto, a diametrically extending slit through said head portion also extending into said shaft portion; said head portion having a facing side defining rIng-shaped guide grooves, at least two knife inserts detachably connected to said facing side of said head portion, each of said knife inserts including a corresponding guide groove engaging with said guide grooves of said head portion, said knife inserts being secured to said head portion by means of screws, and wherein a screw extends transversely to the axis of the tool through said head portion for altering the clearance angle of said knives.
Claim 2
Dependent Claim
110 words
A chamfer tool having a cylindrical head portion and a shaft axially connected thereto, a diametrically extending slit through said head portion also extending into said shaft portion; said head portion having a facing side defining rIng-shaped guide grooves, at least two knife inserts detachably connected to said facing side of said head portion, each of said knife inserts including a corresponding guide groove engaging with said guide grooves of said head portion, said knife inserts being secured to said head portion by means of screws, and wherein a screw extends transversely to the axis of the tool through said head portion for altering the clearance angle of said knives.
Claim 3
Dependent Claim
18 words
A tool as defined in claim 1, wherein said screw penetrating said head portion is a draw screw.
Claim 4
Dependent Claim
36 words
A tool as defined in claim 2, wherein said knife segments are secured to said head portion by means of screws which penetrate said head portion in a direction parallel to the axis of said tool.
Claim 5
Dependent Claim
33 words
A tool as defined in claim 3, wherein said head portion includes bores and wherein each of said knife segments includes a positioning pin which engages with a corresponding bore of said head.
Claim 6
Dependent Claim
31 words
A tool as defined in claim 1, wherein the facing side of said head portion further includes planar supporting surfaces as well as a ring-shaped centering rib of rectangular cross section.
Claim 7
Dependent Claim
45 words
A tool as defined in claim 1, wherein said knife segments contain a guidance groove extending parallel to the cutting edge thereof, and a burr removal knife disposed in said guidance groove such that said burr removal knife can be displaced and locked in position.
References Cited (Backward Citations)
CH327817A
Cited
US2958241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |