Patent US3145823A successfully refreshed from Google Patents.
US3570566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary cutting device
Assignee: Kennametal Inc
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Filing: 1969-01-16
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Granted: 1971-03-16
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Expires: 1989-01-16
Abstract
Abstract The invention relates to a cutting device which has a cutting disc rotatably mounted on the outer end of a swingable arm and with the disc having a plurality of support blocks for cutter members mounted thereon in distributed relation about the periphery. Each support block has a bore which rotatably receives the shank of a picklike cutting member which is retained in assembled relation with the respective block while being free to rotate relative to the block.
Inventors
- 👤 James F Mccreery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:03
CPC Classifications
B; B27; B27B; B27B5/00; B27B5/10; A; A01; A01G; A01G23/00; A01G23/02; A01G23/06; A01G23/067
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
106 words
In a cutting machine; a frame, a support arm moveably carried by said frame, a disc rotatably mounted on said arm, means on the frame drivingly connected to said disc to drive the disc in rotation in one direction, and pick-type cutter members mounted on said disc in circumferentially distributed relation, each cutter member having a cylindrical support shank at one end supportingly engaged by said disc and tapering inwardly to a point at the other end, and each cutter member having its point end directed in a direction generally radially outwardly of said disc and inclined forwardly in the direction of rotation of said disc.
Claim 2
Dependent Claim
106 words
In a cutting machine; a frame, a support arm moveably carried by said frame, a disc rotatably mounted on said arm, means on the frame drivingly connected to said disc to drive the disc in rotation in one direction, and pick-type cutter members mounted on said disc in circumferentially distributed relation, each cutter member having a cylindrical support shank at one end supportingly engaged by said disc and tapering inwardly to a point at the other end, and each cutter member having its point end directed in a direction generally radially outwardly of said disc and inclined forwardly in the direction of rotation of said disc.
Claim 3
Dependent Claim
67 words
A cutting machine according to claim 1 which includes a support block fixed to said disc for each cutter member, each support block having a bore therein, each cutter member having its shank rotatably mounted in a respective said bore, and retaining means retaining each cutter member in assembled relation with the respective support block, and said support blocks being distributed about the periphery of said disc.
Claim 4
Dependent Claim
22 words
A cutting machine according to claim 2 which said support block and cutter members are mounted on both sides of said disc.
Claim 5
Dependent Claim
46 words
A cutting machine according to claim 3 in which said support block and cutter members on each side of said disc are arranged in circumferential groups with the point ends of said cutter members of each group distributed radially and axially with reference to said disc.
Claim 6
Dependent Claim
58 words
A cutting machine according to claim 4 in which the point end of the cutter member at the leading end of each group projects radially beyond the periphery of said disc while the point ends of the others of the cutter members of the respective group are disposed successively closer to the axis of rotation of said disc.
Claim 7
Dependent Claim
31 words
A cutting machine according to claim 5 in which the point ends of the cutter members of each group are disposed in a path inclined to the plane of said disc.
Claim 8
Dependent Claim
66 words
A cutting machine according to claim 3 in which said support blocks are so mounted on said disc that a support block on one side of the disc is axially aligned with a support block on the other side of the disc to form a pair, and bolts extending through each said pair of blocks and disc to secure the pairs of blocks to the disc.
Claim 9
Dependent Claim
43 words
A cutting machine according to claim 2 in which the bore in each support block has a tapered seat at the end and each cutter member has a tapered seat engaging portion at the end of the shank for engagement with said seat.
Claim 10
Dependent Claim
54 words
A cutting machine according to claim 8 in which said retaining means comprises a pin in each support block intersecting the bore in the block near the periphery thereof, and each shank having a groove for loosely receiving a said pin whereby each cutter member is retained in its block but is rotatable therein.
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) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |