Patent US3716900A successfully refreshed from Google Patents.
US3716900A
Expired / Lapsed
US
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Indexable cutting insert and holder therefor
Assignee: Ingersoll Cutting Tool Co
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Filing: 1972-02-25
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Granted: 1973-02-20
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Expires: 1992-02-25
Abstract
Abstract Rectangular blocks or inserts of cutting material having a center hole are secured by conically headed screws in peripheral pockets in the rotary body of a face milling cutter and are adapted for selective indexing about the screw axis into a plurality of cutting positions. One of the abutments defining each indexed position of the insert is itself mounted for indexing about its central axis and is locked in place by a conically headed screw which crowds the abutment against the cutter body.
Inventors
- 👤 D Erkfritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:40
CPC Classifications
B; B23; B23C; B23C5/00; B23C5/16; B23C5/20; B23C5/22; B23C5/2204; B23C5/2208; B23C5/2213; B23C2200/00; B23C2200/36; B23C2200/367; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1906; Y10T407/1908; Y10T407/192; Y10T407/1924; Y10T407/1932; Y10T407/22; Y10T407/2268; Y10T407/2272; Y10T407/2274; Y10T407/2276; Y10T407/23; Y10T407/235
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
106 words
A tool holder for an indexable insert of cutting material having a plurality of cutting edges spaced from and around an aperture through the insert, a body including a platform rigid therewith supporting said insert, angularly related abutments upstanding from the platform and defining a corner into which said insert may be pressed edgewise to locate one of said edges in cutting position, one of said abutments being one of a plurality of edges of a plate secured to said platform and indexable about a central axis to present different ones of its edges selectively in position to serve as said one abutment for said insert.
Claim 2
Dependent Claim
106 words
A tool holder for an indexable insert of cutting material having a plurality of cutting edges spaced from and around an aperture through the insert, a body including a platform rigid therewith supporting said insert, angularly related abutments upstanding from the platform and defining a corner into which said insert may be pressed edgewise to locate one of said edges in cutting position, one of said abutments being one of a plurality of edges of a plate secured to said platform and indexable about a central axis to present different ones of its edges selectively in position to serve as said one abutment for said insert.
Claim 3
Dependent Claim
106 words
A tool holder for an indexable insert of cutting material having a plurality of cutting edges spaced from and around an aperture through the insert, a body including a platform rigid therewith supporting said insert, angularly related abutments upstanding from the platform and defining a corner into which said insert may be pressed edgewise to locate one of said edges in cutting position, one of said abutments being one of a plurality of edges of a plate secured to said platform and indexable about a central axis to present different ones of its edges selectively in position to serve as said one abutment for said insert.
Claim 4
Dependent Claim
106 words
A tool holder for an indexable insert of cutting material having a plurality of cutting edges spaced from and around an aperture through the insert, a body including a platform rigid therewith supporting said insert, angularly related abutments upstanding from the platform and defining a corner into which said insert may be pressed edgewise to locate one of said edges in cutting position, one of said abutments being one of a plurality of edges of a plate secured to said platform and indexable about a central axis to present different ones of its edges selectively in position to serve as said one abutment for said insert.
Claim 5
Dependent Claim
48 words
A tool holder as defined in claim 1 in which said indexable abutment plate is a polygon supported on an extension of said platform and engaging an upstanding wall spaced from said insert and engageable with a side of the polygon to determine the different indexed positions thereof.
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) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |