Patent US3914840A successfully refreshed from Google Patents.
US3914840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutting apparatus
Assignee: Sunbeam Corp
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Filing: 1974-11-08
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Granted: 1975-10-28
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Expires: 1994-11-08
Abstract
Abstract Cutting apparatus such as broaching, turning and milling machines includes a reversible cutting tool having a bore therethrough. The tool is mounted on a tool holder having a locating post projecting from its front end into the tool bore. A screw passing through the tool holder intermediate its ends into a cutting block applies a force holding the parts assembled. A projection on the front end of the tool holder bears against an inwardly extending shoulder on the cutting block which may be provided by a groove in the block. The outer block surface and the bottom surface of the tool holder between the rear contact surfaces thereof and the shoulder are so shaped as to provide clearance therebetween. There is only frictional contact between the bottom surface at the rear end of the holder and the outer surface of the block.
Inventors
- 👤 Allen B Ferree
- 👤 Gene H Whitfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:05
CPC Classifications
B; B23; B23D; B23D43/00; B23D43/02; B23D43/04; B23B; B23B27/00; B23B27/14; B23B27/16; B23B27/1662; B23C; B23C5/00; B23C5/16; B23C5/20; B23C5/22; B23C5/2204; B23C5/2208; Y; Y10; Y10T; Y10T407/00; Y10T407/16; Y10T407/1628; Y10T407/1657; Y10T407/22; Y10T407/2272; Y10T407/2274; Y10T407/2276
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
187 words
Cutting apparatus comprising a cutting block, a reversible cutting Tool having a bore extending therethrough, a tool holder for said cutting tool superimposed on the outer surface of said cutting block and projecting therefrom, a locating post projecting forwardly from the front end of said tool holder into said bore in the cutting tool for positioning the tool on said holder at an inclination to said outer surface, means detachably securing said tool holder to said tool block, said means applying a holding force at a location between the front and rear ends of said tool holder, said outer block surface and the surface of said tool holder being in only frictional contact at the rear end of said tool holder, an inwardly extending shoulder on said cutting block between the front end of said tool holder and the location of said holding force, and a projection on the front end of said tool holder bearing against said shoulder, said outer block surface and the surface of said tool holder between the rear contact surfaces thereof and said shoulder being so shaped as to provide clearance therebetween.
Claim 2
Dependent Claim
187 words
Cutting apparatus comprising a cutting block, a reversible cutting Tool having a bore extending therethrough, a tool holder for said cutting tool superimposed on the outer surface of said cutting block and projecting therefrom, a locating post projecting forwardly from the front end of said tool holder into said bore in the cutting tool for positioning the tool on said holder at an inclination to said outer surface, means detachably securing said tool holder to said tool block, said means applying a holding force at a location between the front and rear ends of said tool holder, said outer block surface and the surface of said tool holder being in only frictional contact at the rear end of said tool holder, an inwardly extending shoulder on said cutting block between the front end of said tool holder and the location of said holding force, and a projection on the front end of said tool holder bearing against said shoulder, said outer block surface and the surface of said tool holder between the rear contact surfaces thereof and said shoulder being so shaped as to provide clearance therebetween.
Claim 3
Dependent Claim
66 words
Cutting apparatus according to claim 1 in which said holding force means includes a threaded hole in said cutting block, an counterbored hole in said tool holder in axial alignment with said threaded hole, said counterbored hole providing a shoulder, and a screw having a head thereon, said screw extending through said aligned holes with the screw head bearing against the shoulder in said counterbored hole.
Claim 4
Dependent Claim
33 words
Cutting apparatus according to claim 1 in which said holder includes a cutaway portion on its bottom between its contacting rear surface and the rear end of said projection to provide said clearance.
Claim 5
Dependent Claim
66 words
Cutting apparatus according to claim 3 in which said holding force means includes a threaded hole in said cutting block, a counterbored hole in said tool holder in axial alignment with said threaded hole, said counterbored hole providing a shoulder, and a screw having a head thereon, said screw extending through said aligned holes with the screw head bearing against the shoulder in said counterbored hole.
Claim 6
Dependent Claim
44 words
Cutting apparatus according to claim 3 in which said inwardly extending shoulder is provided by a groove in said cutting block of such size as to receive said projection, said cutter resting on said outer surface of said cutter block forward of said groove.
Claim 7
Dependent Claim
66 words
Cutting apparatus according to claim 5 in which said holding force means includes a threaded hole in said cutting block, a counterbored hole in said tool holder in axial alignment with said threaded hole, said counterbored hole providing a shoulder, and a screw having a head thereon, said screw extending through said aligned holes with the screw head bearing against the shoulder in said counterbored hole.
Claim 8
Dependent Claim
44 words
Cutting apparatus according to claim 3 in which said inwardly extending shoulder is provided by a recess in said cutting block extending from said inwardly extending shoulder forwardly to the end of said cutting block, said cutter resting on the bottom of said recess.
Claim 9
Dependent Claim
66 words
Cutting apparatus according to claim 7 in which said holding force means includes a threaded hole in said cutting block, a counterbored hole in said tool holder in axial alignment with said threaded hole, said counterbored hole providing a shoulder, and a screw having a head thereon, said screw extending through said aligned holes with the screw head bearing against the shoulder in said counterbored hole.
Claim 10
Dependent Claim
38 words
Cutting apparatus according to claim 1 in which the bottom of said holder between its rear end and projection is arranged at a different angle than the opposing outer surface of said tool block to provide said clearance.
Claim 11
Dependent Claim
66 words
Cutting apparatus according to claim 9 in which said holding force means includes a threaded hole in said cutting block, a counterbored hole in said tool holder in axial alignment with said threaded hole, said counterbored hole providing a shoulder, and a screw having a head thereon, said screw extending through said aligned holes with the screw head bearing against the Shoulder in said counterbored hole.
Claim 12
Dependent Claim
44 words
Cutting apparatus according to claim 9 in which said inwardly extending shoulder is provided by a groove in said cutting block of such size as to receive said projection, said cutter resting on said outer surface of said cutter block forward of said groove.
Claim 13
Dependent Claim
66 words
Cutting apparatus according to claim 11 in which said holding force means include a threaded hole in said cutting block, a counterbored hole in said tool holder in axial alignment with said threaded hole, said counterbored hole providing a shoulder, and a screw having a head thereon, said screw extending through said aligned holes with the screw head bearing against the shoulder in said counterbored hole.
Claim 14
Dependent Claim
44 words
Cutting apparatus according to claim 9 in which said inwardly extending shoulder is provided by a recess in said cutting block extending from said inwardly extending shoulder forwardly to the end of said cutting block, said cutter resting on the bottom of said recess.
Claim 15
Dependent Claim
66 words
Cutting apparatus according to claim 13 in which said holding force means includes a threaded hole in said cutting block, a counterbored hole in said tool holder in axial alignment with said threaded hole, said counterbored hole providing a shoulder, and a screw having a head thereon, said screw extending through said aligned holes with the screw head bearing against the shoulder in said counterbored hole.
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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |