Patent US3622247A successfully refreshed from Google Patents.
US3622247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boring method
Assignee: Acme Precision Products Inc
•
Filing: 1969-04-01
•
Granted: 1971-11-23
•
Expires: 1989-04-01
Abstract
Abstract A method and apparatus for finish boring a bore in a workpiece wherein a tool is moved axially and rotated with respect to the bore to take a first cut and is thereafter moved radially outwardly and retracted axially while rotating the tool relative to the workpiece to provide a finish cut resulting in a finished bore.
Inventors
- 👤 Myron L Greenberg
- 👤 Daniel J Kolesar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:34
CPC Classifications
B; B23; B23B; B23B29/00; B23B29/03; B23B29/034; B23Q; B23Q1/00; B23Q1/25; B23Q1/26; B23Q1/38; Y; Y10; Y10T; Y10T408/00; Y10T408/83; Y10T408/85
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
180 words
In a boring apparatus, the combination comprising a tool support having means thereon for supporting a tool, a base, said tool support and said base having complementary surfaces, one of said surfaces having at least one set of circumferentially spaced pressure pads therein, a restrictor associated with each said pressure pad, means for supplying fluid to each said restrictor, means for moving said tool support and workpiece relative to one another, a pressure pad in said tool support oriented circumferentially with respect to said tool, and means for supplying additional fluid to said pressure pad on said tool support for displacing the tool support radially with respect to the axis of the support in the manner to move the tool radially outwardly with respect to the workpiece, means for measuring the diameter of the bore in the workpiece after the tool has moved axially in one direction, and means responsive to said last-mentioned means for controlling the application of fluid to said last-mentioned pressure pad and thereby controlling the radially outward movement of the tool with respect to the workpiece.
Claim 2
Dependent Claim
180 words
In a boring apparatus, the combination comprising a tool support having means thereon for supporting a tool, a base, said tool support and said base having complementary surfaces, one of said surfaces having at least one set of circumferentially spaced pressure pads therein, a restrictor associated with each said pressure pad, means for supplying fluid to each said restrictor, means for moving said tool support and workpiece relative to one another, a pressure pad in said tool support oriented circumferentially with respect to said tool, and means for supplying additional fluid to said pressure pad on said tool support for displacing the tool support radially with respect to the axis of the support in the manner to move the tool radially outwardly with respect to the workpiece, means for measuring the diameter of the bore in the workpiece after the tool has moved axially in one direction, and means responsive to said last-mentioned means for controlling the application of fluid to said last-mentioned pressure pad and thereby controlling the radially outward movement of the tool with respect to the workpiece.
Claim 3
Dependent Claim
93 words
In a boring apparatus, the combination comprising a tool support having means thereon for supporting a boring tool, a base, said tool support and said base having complementary surfaces, one of said surfaces having at least one set of circumferentially spaced pressure pads therein, a restrictor associated with each said pressure pad, means for supplying fluid to each said restrictor, means for moving said tool support and workpiece axially and rotating them relative to one another to produce a rough cut when the tool and workpiece are moved relatively in one axial direction,
Claim 4
Dependent Claim
93 words
In a boring apparatus, the combination comprising a tool support having means thereon for supporting a boring tool, a base, said tool support and said base having complementary surfaces, one of said surfaces having at least one set of circumferentially spaced pressure pads therein, a restrictor associated with each said pressure pad, means for supplying fluid to each said restrictor, means for moving said tool support and workpiece axially and rotating them relative to one another to produce a rough cut when the tool and workpiece are moved relatively in one axial direction,
Claim 5
Dependent Claim
29 words
The combination set forth in claim 2 including means for applying said fluid to said last-mentioned pressure pad in response to relative axial movement of said tool and workpiece.
Claim 6
Dependent Claim
22 words
The combination set forth in claim 1 wherein said last-mentioned means comprises comparison means for comparing said diameter with a predetermined standard.
Claim 7
Dependent Claim
52 words
The combination set forth in claim 1 wherein said last-mentioned means comprises means for creating a first signal in response to the diameter measuring means, means for comparing said first signal with a predetermined standard, and means for controlling the flow of fluid to said pressure pad in response to said comparison.
Claim 8
Dependent Claim
29 words
The combination set forth in claim 5 including means for storing said diameter signal until such time as the tool has moved axially in one direction through said workpiece.
References Cited (Backward Citations)
US2663977A
Cited
US3233480A
Cited
US3418025A
Cited
US3461752A
Cited
US3466952A
Cited
US3496806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |