US4387596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and device for ultrasonically testing spherical bodies
Assignee: IHO Holding GmbH and Co KG
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Filing: 1981-02-02
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Granted: 1983-06-14
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Expires: 2001-02-02
Abstract
Abstract Spherical bodies, such as bearing balls, are tested for machining irregularities or structural defects by subjecting them to supersonic vibrations from two or more ultrasound generators through the intermediary of a coupling liquid in which these bodies are immersed. One ultrasound generator has an axis in line with the body being tested while the other generator or generators have axes including acute angles with the radial directions of that body. The body is subjected to rotation in different planes by injecting the coupling liquid, alternately or simultaneously but at varying relative rates, through two different nozzles into an interspace separating the body from a spherically concave supporting surface.
Inventors
- 👤 Max Fenkner
- 👤 Hilmar Wehner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:18
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/22; G01N29/26; G01N29/27; G01N29/28; G01N2291/00; G01N2291/26; G01N2291/265
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
145 words
A device for ultrasonically testing spherical bodies, comprising: a supporting member with a spherically concave recess accommodating a body to be tested; a supply of coupling liquid communicating with said recess for providing a cushion of said liquid between said member and a body seated in said recess; first ultrasound-generating means trained vertically from below through said member and said cushion upon the center of curvature of said recess; second ultrasound-generating means trained inclinedly from the vertical at an angle less than 90° from below through said member and said cushion upon a body seated in said recess along at least one line offset from said center of curvature; drive means for setting a body to be tested in successive rotation about at least two different axes substantially passing through said center of curvature; and evaluating means connected to said first and second ultrasound-generating means.
Claim 2
Independent Claim
145 words
A device for ultrasonically testing spherical bodies, comprising: a supporting member with a spherically concave recess accommodating a body to be tested; a supply of coupling liquid communicating with said recess for providing a cushion of said liquid between said member and a body seated in said recess; first ultrasound-generating means trained vertically from below through said member and said cushion upon the center of curvature of said recess; second ultrasound-generating means trained inclinedly from the vertical at an angle less than 90° from below through said member and said cushion upon a body seated in said recess along at least one line offset from said center of curvature; drive means for setting a body to be tested in successive rotation about at least two different axes substantially passing through said center of curvature; and evaluating means connected to said first and second ultrasound-generating means.
Claim 3
Dependent Claim
34 words
A device as defined in claim 1 wherein said second ultrasound-generating means comprises a plurality of ultrasound generators equispaced from a vertical centerline of said recess and inclined at different angles to the vertical.
Claim 4
Dependent Claim
33 words
A device as defined in claim 1 or 2 wherein said drive means comprises a plurality of nozzles connected to said supply for injecting said coupling liquid into said recess at different angles.
Claim 5
Dependent Claim
37 words
A device as defined in claim 3, further comprising a vessel surrounding said member and extending sufficiently high above said recess to enable a body seated therein to be completely immersed in coupling liquid overflowing said recess.
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) | 1986-06-13 | 1986-12-13 | 1987-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-13 | 1990-12-13 | 1991-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-13 | 1994-12-13 | 1995-06-14 | $7700.00 | Window Closed / Lapsed |