US3837058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool holder
Assignee: Kennametal Inc
•
Filing: 1973-11-15
•
Granted: 1974-09-24
•
Expires: 1993-11-15
Abstract
Abstract A tool holder having a pocket for receiving an insert with a pin stationary in the holder and extending into the pocket while a clamp is adjustably mounted on the holder and engages the insert from the rear and the top and forces the insert against the pin while simultaneously clamping the insert firmly against the bottom of the pocket.
Inventors
- 👤 G Barkley
- 👤 E Sorice
- 👤 K Niebauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:42
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/14; B23B27/16; B23B27/1666; B23B27/1659; Y; Y10; Y10T; Y10T407/00; Y10T407/22; Y10T407/2272; Y10T407/2274; Y10T407/2282; Y10T407/2286
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
198 words
A bar-like tool holder having a pocket formed in one end thereof to receive a cutting insert, said pocket having an upwardly facing bottom wall, a pin in the holder extending upwardly into said pocket to engage a hole in a insert placed in the pocket, an inclined wall formed on said holder rearwardly of said pocket in a plane which diverges from the axis of said pin in the upward direction, a clamp element having a rear end adapted to engage said inclined wall and a forward end adapted to engage the rear side of an insert in said pocket, and means for forcing said clamp element downwardly on said holder thereby to wedge said clamp element between the said inclined wall and the rear side of an insert in said pocket, the forward end of said clamp element comprising a forwardly protruding lateral rib which engages an insert in the pocket below the top of the insert, said forwardly protruding rib being relieved along the intermediate portion thereof to prevent the application of clamping pressure to that region of the rear side of the insert which is in longitudinal alignment with the hole in the insert.
Claim 2
Dependent Claim
198 words
A bar-like tool holder having a pocket formed in one end thereof to receive a cutting insert, said pocket having an upwardly facing bottom wall, a pin in the holder extending upwardly into said pocket to engage a hole in a insert placed in the pocket, an inclined wall formed on said holder rearwardly of said pocket in a plane which diverges from the axis of said pin in the upward direction, a clamp element having a rear end adapted to engage said inclined wall and a forward end adapted to engage the rear side of an insert in said pocket, and means for forcing said clamp element downwardly on said holder thereby to wedge said clamp element between the said inclined wall and the rear side of an insert in said pocket, the forward end of said clamp element comprising a forwardly protruding lateral rib which engages an insert in the pocket below the top of the insert, said forwardly protruding rib being relieved along the intermediate portion thereof to prevent the application of clamping pressure to that region of the rear side of the insert which is in longitudinal alignment with the hole in the insert.
Claim 3
Dependent Claim
34 words
A tool holder according to claim 1 in which said clamp element includes a lip protruding forwardly from the forward edge at the top to engage the top of an insert in said pocket.
Claim 4
Dependent Claim
57 words
A tool holder according to claim 1 in which said clamp element includes a lip protruding forwardly from the forward edge at the top to engage the top of an insert in said pocket, said lip inclining downwardly toward the forward end so as to have clearance from the rearward edge of an insert in said pocket.
Claim 5
Dependent Claim
48 words
A tool holder according to claim 1 in which said clamp element has a transverse slot formed therein near the rearward end and extending upwardly into the clamp element a substantial distance thereby to impart resilience to the portion of said clamp element which engages said inclined wall.
Claim 6
Dependent Claim
122 words
A tool holder according to claim 1 in which said clamp element is block-like and has a lip projecting forwardly and downwardly from the top of the forward end to engage the top of an insert in said pocket forwardly of the rear edge thereof, a clamp screw extending downwardly through said clamp element and into said holder to draw the clamp element downwardly on the holder, the lower rearward corner of said clamp element engaging said inclined wall, and a slot extending transversely in said clamp element near the rearward end of the clamp element and extending upwardly from the bottom of the clamp element thereby to impart resilience to said corner of the clamp element which engages said inclined wall.
Claim 7
Dependent Claim
30 words
A tool holder according to claim 1 in which said pin threadedly engages a threaded bore in said holder extending through the bottom wall of said pocket and perpendicular thereto.
Claim 8
Dependent Claim
49 words
A tool holder according to claim 1 in which said means for forcing said clamp element downwardly comprises a clamp screw extending through said clamp element from above and threadedly engaging a second threaded bore in said holder which is substantially parallel to and spaced rearwardly from said pin.
Claim 9
Dependent Claim
51 words
A tool holder according to claim 6 in which said pin has a flange thereon near the upper end, and a shim resting on the bottom wall of said pocket having a hole to receive said pin and a counterbore in the upper end of the hole to receive said flange.
Claim 10
Dependent Claim
30 words
A tool holder according to claim 2 in which the forward side of said lip inclines upwardly and rearwardly from the top of an insert engaged by the said lip.
Claim 11
Dependent Claim
35 words
A tool holder according to claim 9 in which said lip tapers inwardly toward the forward end to a width substantially smaller than the width of the insert where it is engaged by the lip.
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) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |