US3696484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball mill cutter
Assignee: Pneumo Dynamics Corp
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Filing: 1971-02-22
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Granted: 1972-10-10
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Expires: 1991-02-22
Abstract
Abstract Ball mill cutter includes plural cutting blade inserts retained in circumferentially spaced slots in the forward end of the tool body, such slots having a flat bottom wall extending rearwardly at an angle from the tip of the tool body to the outer periphery thereof. The bottom edge of the blade inserts is also flat for mating engagement with the bottom wall of the angular slots, and the outer edge of each blade insert is contoured to provide a cutting edge projecting radially outwardly beyond the outer periphery of the tool body substantially to the same extent along the full length thereof except adjacent the axis of rotation of the tool body where the blade inserts have a flat portion extending perpendicular to the bottom edge which terminates the forwardmost portion of the cutting edge radially outwardly from the rotational axis of the tool body.
Inventors
- 👤 Frank A Spriggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:30
CPC Classifications
B; B23; B23C; B23C5/00; B23C5/02; B23C5/10; B23C5/1009; B23C5/1027; B23C5/1045; B23C5/16; B23C5/20; B23C5/22; B23C5/2265; B23C5/2269; B23C2200/00; B23C2200/04; B23C2200/0416; B23C2200/12; B23C2200/123; B23C2200/20; B23C2200/203; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1906; Y10T407/1908; Y10T407/192; Y10T407/1922; Y10T407/1924
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
102 words
A ball mill cutter comprising a tool body rounded at one end, a plurality of circumferentially spaced longitudinally extending slots in said tool body intersecting the tip of said one end, and blade inserts in said slots, said blade inserts having contoured outer edges providing cutting edges projecting radially outwardly beyond the outer periphery of said tool body, said outer edges being relieved adjacent the rotational axis of said tool body in the region of said tip to locate the forwardmost portion of said cutting edges radially outwardly of such rotational axis, and means for retaining said blade inserts in said slots.
Claim 2
Dependent Claim
102 words
A ball mill cutter comprising a tool body rounded at one end, a plurality of circumferentially spaced longitudinally extending slots in said tool body intersecting the tip of said one end, and blade inserts in said slots, said blade inserts having contoured outer edges providing cutting edges projecting radially outwardly beyond the outer periphery of said tool body, said outer edges being relieved adjacent the rotational axis of said tool body in the region of said tip to locate the forwardmost portion of said cutting edges radially outwardly of such rotational axis, and means for retaining said blade inserts in said slots.
Claim 3
Dependent Claim
27 words
The cutter of claim 1 wherein there are three of said slots uniformly circumferentially spaced around the periphery of said tool body each containing a blade insert.
Claim 4
Dependent Claim
50 words
The cutter of claim 1 wherein said slots extend rearwardly from said tip at an angle to the outer periphery of said tool body, said slots having a flat bottom wall and flat sides for mating engagement by the bottom edge and sides of said blades which are also flat.
Claim 5
Dependent Claim
26 words
The cutter of claim 3 wherein one edge of the bottom wall of said slots intersects the rotational axis of said tool body at said tip.
Claim 6
Dependent Claim
40 words
The cutter of claim 3 wherein said outer edge of each of said blades is relieved by providing a flat on said blades adjacent the rotational axis of said tool body extending rearwardly at an angle to such rotational axis.
Claim 7
Dependent Claim
21 words
The cutter of claim 5 wherein each of said flats is perpendicular to the bottom edge of the respective blade inserts.
Claim 8
Dependent Claim
65 words
The cutter of claim 1 wherein said means for retaining said blade inserts in said slots comprises clamp means fastened to said tool body for engagement with one side of said blades. 8 The cutter of claim 7 wherein one side of each of said slots is relieved to expose a portion of one side of said blade inserts for engagement by said clamp means.
Claim 9
Dependent Claim
19 words
The cutter of claim 7 wherein there are two of said clamp means engaging each of said blade inserts.
Claim 10
Dependent Claim
36 words
The cutter of claim 7 further comprising a stop pin inserted in said tool body adjacent the rear edge of each of said blade inserts to prevent rearward movement of said blade inserts within said slots.
References Cited (Backward Citations)
US2517970A
Cited
US3409965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |