Patent US3739822A successfully refreshed from Google Patents.
US3739822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wood-turning machine
Assignee: Individual
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Filing: 1970-11-09
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Granted: 1973-06-19
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Expires: 1990-11-09
Abstract
Abstract A machine to facilitate the production of hollow bodies of two co-axial rotational surfaces. A tool holder in the shape of a spherical segment carries an easily replaceable cutting tool. The tool holder is capable of linear movement in three directions and is also rotatable about an axis perpendicular to the rotation axis of the workpiece. The tool holder is itself easily replaceable to facilitate the fabrication of bodies whose surfaces have different radii of curvature.
Inventors
- 👤 N Loof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:33
CPC Classifications
B; B27; B27C; B27C7/00; Y; Y10; Y10T; Y10T82/00; Y10T82/14; Y10T82/148
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
150 words
A machine for producing from a solid workpiece a plurality of hollow bodies each comprising two coaxial rotational surfaces, comprising a. a Base, b. means located on said base for holding a workpiece for rotational movement, c. a tool holder including a portion shaped as a spherical segment, d. said spherical segment supporting a cutting tool, e. means for rotating said cutting tool about a rotational axis, said rotational axis being located behind the workpiece surface facing said tool holder, and said rotational axis also being perpendicular to the axis of rotation of said workpiece, and f. a pipe located adjacent one edge of said tool holder for supplying pressurized air to said tool for cooling and chip removal, g. said tool holder being supported by means including a valve for communicating with said pipe, said valve automatically opening upon the insertion of said tool holder in said lastnamed means.
Claim 2
Dependent Claim
150 words
A machine for producing from a solid workpiece a plurality of hollow bodies each comprising two coaxial rotational surfaces, comprising a. a Base, b. means located on said base for holding a workpiece for rotational movement, c. a tool holder including a portion shaped as a spherical segment, d. said spherical segment supporting a cutting tool, e. means for rotating said cutting tool about a rotational axis, said rotational axis being located behind the workpiece surface facing said tool holder, and said rotational axis also being perpendicular to the axis of rotation of said workpiece, and f. a pipe located adjacent one edge of said tool holder for supplying pressurized air to said tool for cooling and chip removal, g. said tool holder being supported by means including a valve for communicating with said pipe, said valve automatically opening upon the insertion of said tool holder in said lastnamed means.
Claim 3
Dependent Claim
37 words
In the machine according to claim 1 in which said tool holder has, opposite the end of said spherical segment, a yoke, T-shaped in cross-section, to enable said tool holder to be clamped in a fixed position.
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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |