Patent US4447962A successfully refreshed from Google Patents.
US4447962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable bore target and gage
Assignee: Farrel Corp
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Filing: 1982-05-24
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Granted: 1984-05-15
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Expires: 2002-05-24
Abstract
Abstract A device having four engagement points movable along a bore and provided with an optical target or gage adjustable in cross directions normal to the bore axis and a probe mounted for rotation on the gage and engageable with the cylindrical surface of the bore for determining concentricity of the gage and the bore axis.
Inventors
- 👤 Joseph J. Grosberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:34
CPC Classifications
G; G01; G01C; G01C15/00; G01C15/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
109 words
A device for aligning a gage with the axis of a bore comprising a carriage having four points of engagement adapted to move along one side of the internal cylindrical surface of the bore in directions parallel to the bore axis, a gage positioning unit mounted on the carriage for movement therewith and including two crossed stages for adjustment in crossed directions normal to the bore axis, means mounting the gage on one of the stages for rotation on an axis parallel to the bore axis, the gage being engageable with the bore surface as it is rotated for determining alignment of the gage axis with the bore axis.
Claim 2
Independent Claim
109 words
A device for aligning a gage with the axis of a bore comprising a carriage having four points of engagement adapted to move along one side of the internal cylindrical surface of the bore in directions parallel to the bore axis, a gage positioning unit mounted on the carriage for movement therewith and including two crossed stages for adjustment in crossed directions normal to the bore axis, means mounting the gage on one of the stages for rotation on an axis parallel to the bore axis, the gage being engageable with the bore surface as it is rotated for determining alignment of the gage axis with the bore axis.
Claim 3
Dependent Claim
15 words
A device according to claim 1 in which each point of engagement comprises spherical rollers.
Claim 4
Dependent Claim
27 words
A device according to claim 1 in which the gage positioning unit is mounted on one or more rods extending from the carriage toward the bore axis.
Claim 5
Dependent Claim
26 words
A device according to claim 3 in which the gage positioning unit is adjustable bodily along the rods to operate within bores of different diametrical size.
Claim 6
Dependent Claim
48 words
A device according to claim 1 in which one of said stages is mounted for movement along ways on the positioning unit and the other stage is mounted for movement along ways of the first mentioned stage substantially perpendicular to the first mentioned ways and carries the gage.
Claim 7
Dependent Claim
21 words
A device according to claim 5 in which each stage is movable on its associated ways by a micrometer type adjustment.
Claim 8
Dependent Claim
42 words
A device according to claim 6 in which the portion of the gage engageable with the bore surface is provided with indicia to indicate the amount of micrometer adjustment of the stages necessary to align the gage axis with the bore axis.
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) | 1987-05-15 | 1987-11-14 | 1988-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-15 | 1991-11-14 | 1992-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-15 | 1995-11-14 | 1996-05-15 | $7700.00 | Window Closed / Lapsed |