US3709624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torroidal boring head
Assignee: Menasco Inc
•
Filing: 1970-12-07
•
Granted: 1973-01-09
•
Expires: 1990-12-07
Abstract
Abstract A machine for accurately machining curved holes comprising a rotatable work supporting table having an axis of rotation and a plane of rotation; a segmented torroidal casing having two ends and support means fixedly mounting said casing in a plane parallel to said plane of rotation with the axis of said torroidal casing coinciding with said axis of rotation; a cutting tool rotatably mounted at an end of said casing and having a diameter larger than the diameter of said casing; drive means within said casing operatively connected to said cutting tool, and means to rotate said table about said axis of rotation. A tool for accurately machining a curved hole comprising a segmented torroidal casing having two ends; a cutting tool having a diameter larger than that of said casing, said cutter rotatably mounted at one of said ends; a drive shaft rotatably mounted at the other of said ends; and a gear train mounted within said casing and operatively connecting said drive shaft to said cutting tool.
Inventors
- 👤 E Blank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:07
CPC Classifications
B; B23; B23B; B23B5/00; B23B5/36; B23B5/365; B23Q; B23Q5/00; B23Q5/02; B23Q5/04; B23Q5/043; B23Q5/045; Y; Y10; Y10T; Y10T408/00; Y10T408/52; Y10T408/54; Y10T408/545; Y10T408/65; Y10T408/665; Y10T409/00; Y10T409/30; Y10T409/303976; Y10T409/304032; Y10T409/30868; Y10T409/309016; Y10T409/309072
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
214 words
A machine for accurately machining curved holes in a workpiece comprising, in combination: a rotatable table for supporting the workpiece having an axis of rotation and a plane of rotation; a segmented toroidal casing subtending an angle of about 90* having two ends and support means fixedly mounting said casing for maintaining said casing in a plane spaced from and parallel to said plane of rotation with the axis of said toroidal casing coinciding with said axis of rotation; a cutting tool rotatably mounted at an end of said casing and having a diameter larger than the diameter of said casing; non-flexible drive means within said casing operatively connected to said cutting tool, said drive means including a drive shaft, a first driven shaft positioned at about a 90* angle with respect to said drive shaft, a second driven shaft positioned about parallel to said first driven shaft, gear means interconnecting said drive shaft with said first driven shaft and gear means interconnecting said first driven shaft with said second driven shaft, said second driven shaft being directly connected to said cutting tool; and means to rotate said table about said axis of rotation for moving said workpiece against said cutting tool along a curved path coinciding with the toroidal shape of said casing.
Claim 2
Dependent Claim
214 words
A machine for accurately machining curved holes in a workpiece comprising, in combination: a rotatable table for supporting the workpiece having an axis of rotation and a plane of rotation; a segmented toroidal casing subtending an angle of about 90* having two ends and support means fixedly mounting said casing for maintaining said casing in a plane spaced from and parallel to said plane of rotation with the axis of said toroidal casing coinciding with said axis of rotation; a cutting tool rotatably mounted at an end of said casing and having a diameter larger than the diameter of said casing; non-flexible drive means within said casing operatively connected to said cutting tool, said drive means including a drive shaft, a first driven shaft positioned at about a 90* angle with respect to said drive shaft, a second driven shaft positioned about parallel to said first driven shaft, gear means interconnecting said drive shaft with said first driven shaft and gear means interconnecting said first driven shaft with said second driven shaft, said second driven shaft being directly connected to said cutting tool; and means to rotate said table about said axis of rotation for moving said workpiece against said cutting tool along a curved path coinciding with the toroidal shape of said casing.
Claim 3
Dependent Claim
138 words
A machine for accurately machining curved holes comprising: a rotatable work-supporting table having an axis of rotation and a plane of rotation; a curved casing having two ends, and support means fixedly mounting said casing in a plane parallel to said plane of rotation with the axis of curvature of said casing coinciding with said axis of rotation; a cutting tool rotatably mounted at an end of said casing and having a diameter larger than the outer dimension of said casing; drive means within said casing operatively connected to said cutting tool and comprising a gear train including a rotatable shaft supporting said cutting tool, said shaft being driven by a helical gear which imparts an axial thrust to said shaft in the direction of said tool, and means to rotate said table about said axis of rotation.
Claim 4
Dependent Claim
138 words
A machine for accurately machining curved holes comprising: a rotatable work-supporting table having an axis of rotation and a plane of rotation; a curved casing having two ends, and support means fixedly mounting said casing in a plane parallel to said plane of rotation with the axis of curvature of said casing coinciding with said axis of rotation; a cutting tool rotatably mounted at an end of said casing and having a diameter larger than the outer dimension of said casing; drive means within said casing operatively connected to said cutting tool and comprising a gear train including a rotatable shaft supporting said cutting tool, said shaft being driven by a helical gear which imparts an axial thrust to said shaft in the direction of said tool, and means to rotate said table about said axis of rotation.
Claim 5
Dependent Claim
27 words
The machine of claim 2 including a coolant passage and an air passage in said casing, each of said passages having discharge openings adjacent said cutting tool.
Claim 6
Dependent Claim
29 words
The machine of claim 2 wherein the ratio of the radius of said toroidal casing to the cutting diameter of said tool ranges from about 1/1 to about 2/1.
Claim 7
Dependent Claim
122 words
A tool for accurately machining a curved hole comprising: a segmented toroidal casing subtending an angle of about 90* and having two ends; a cutting tool having a diameter larger than the diameter of said casing, said cutting tool rotatably mounted at one of said ends; non-flexible drive means within said casing operatively connected to said cutting tool including a drive shaft rotatably mounted at the other of said ends, a first driven shaft positioned at about a 90* angle with respect to said drive shaft, a second driven shaft positioned about parallel to said first driven shaFt, gear means interconnecting said drive shaft with said first driven shaft and gear means interconnecting said first driven shaft with said second driven shaft.
Claim 8
Dependent Claim
122 words
A tool for accurately machining a curved hole comprising: a segmented toroidal casing subtending an angle of about 90* and having two ends; a cutting tool having a diameter larger than the diameter of said casing, said cutting tool rotatably mounted at one of said ends; non-flexible drive means within said casing operatively connected to said cutting tool including a drive shaft rotatably mounted at the other of said ends, a first driven shaft positioned at about a 90* angle with respect to said drive shaft, a second driven shaft positioned about parallel to said first driven shaFt, gear means interconnecting said drive shaft with said first driven shaft and gear means interconnecting said first driven shaft with said second driven shaft.
Claim 9
Dependent Claim
29 words
The tool of claim 5 wherein the ratio of the radius of said toroidal casing to the cutting diameter of said tool ranges from about 1/1 to about 2/1.
Claim 10
Dependent Claim
27 words
The tool of claim 5 including a coolant passage and an air passage in said casing, each of said passages having discharge openings adjacent said cutting tool.
Claim 11
Dependent Claim
14 words
The machine of claim 2 wherein said casing has the configuration of a torus.
Claim 12
Dependent Claim
101 words
A tool for accurately machining a curved hole comprising: a curved casing having two ends; a cutting tool having a diameter larger than the outer dimension of said casing, said cutting tool rotatably mounted at one of said ends; a drive shaft rotatably mounted at the other of said ends; a gear train mounted within said casing and operatively connecting said drive shaft to said cutting tool, said gear train including a shaft on which said cutting tool is mounted, and a helical gear driving said shaft which imparts an axial thrust to said shaft in the direction of said tool.
Claim 13
Dependent Claim
101 words
A tool for accurately machining a curved hole comprising: a curved casing having two ends; a cutting tool having a diameter larger than the outer dimension of said casing, said cutting tool rotatably mounted at one of said ends; a drive shaft rotatably mounted at the other of said ends; a gear train mounted within said casing and operatively connecting said drive shaft to said cutting tool, said gear train including a shaft on which said cutting tool is mounted, and a helical gear driving said shaft which imparts an axial thrust to said shaft in the direction of said tool.
Claim 14
Dependent Claim
14 words
The tool of claim 9 wherein said casing has the configuration of a torus.
References Cited (Backward Citations)
US550783A
Cited
FR439016A
Cited
GB191517957A
Cited
US1403241A
Cited
US1913490A
Cited
US3146646A
Cited
US3388505A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |