US3863351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gauge for checking radius and spherical surface
Assignee: Cogsdill Tool Products Inc
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Filing: 1974-01-11
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Granted: 1975-02-04
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Expires: 1994-01-11
Abstract
Abstract A gauge has a support for a workpiece which has a spherical section of a selected radius which is to be gauged. The gauge has a cradle which is swingable to advance a spherical surface with a known radius into engagement with an indicator which provides an indicator reading. The workpiece is clamped on the cradle for axial movement into engagement with the indicator to a position where the indicator reading is repeated. The spherical surface is moved to have all points thereof engaged by the indicator so that any changes in the reading can be noted. When the reading remains constant, the spherical surface is gauged to be the one desired of the predetermined radius.
Inventors
- 👤 Stuart E Kalen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:58
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/20; G01B5/22; G01B5/0002
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
111 words
In a gauge, a base having a pair of uprights, a cradle, trunnions on said cradle pivotally secured on said uprights for rotatably supporting said cradle therebetween, an indicator supported on said uprights above said cradle, a support for a workpiece on said cradle which is adjustable axially toward and away from said indicator, means on said cradle for obtaining a reading on said indicator for a radius to be produced for the surface of the workpiece, and means for moving a workpiece mounted on the support into engagement with the indicator until said reading is reproduced thereon and thereafter checking the sphericity of the workpiece surface relative to said reading.
Claim 2
Dependent Claim
111 words
In a gauge, a base having a pair of uprights, a cradle, trunnions on said cradle pivotally secured on said uprights for rotatably supporting said cradle therebetween, an indicator supported on said uprights above said cradle, a support for a workpiece on said cradle which is adjustable axially toward and away from said indicator, means on said cradle for obtaining a reading on said indicator for a radius to be produced for the surface of the workpiece, and means for moving a workpiece mounted on the support into engagement with the indicator until said reading is reproduced thereon and thereafter checking the sphericity of the workpiece surface relative to said reading.
Claim 3
Dependent Claim
30 words
In a gauge as recited in claim 1, wherein means are provided for moving said cradle and support to have all points of the spherical area engaged by said indicator.
Claim 4
Dependent Claim
55 words
In a gauge as recited in claim 2, wherein said support is rotatable and movable axially, a collet at the upper end of said support, and a screw on the centerline of the support having a truncated conical head for expanding said collet when rotated for securing the workpiece in fixed position on the support.
Claim 5
Dependent Claim
45 words
In a gauge as recited in claim 3, wherein a bracket is provided on the bottom of the cradle having a threaded aperture on the axis of said screw, and a screw in said threaded aperture for moving said support toward and from said indicator.
Claim 6
Dependent Claim
75 words
In a gauge as recited in claim 4, wherein said cradle is provided with a spherical section having a known radius from which an indicator reading is obtained, the movement of the spherical surface of the workpiece toward the indicator to have the reading repeated thereon and thereafter moved relative thereto without materially changing the reading thereof provides assurance that the radius is the same as that set for the spherical section on the cradle.
References Cited (Backward Citations)
US1303387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |