Patent US3331019A successfully refreshed from Google Patents.
US3331019A
Expired / Lapsed
US
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Instrument for testing the condition of oil having spherical ball support means
Assignee: Hopkins Manufacturing Corp
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Filing: 1963-12-17
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Granted: 1967-07-11
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Expires: 1983-12-17
Abstract
No abstract record available.
Inventors
- 👤 Lee K Irwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:36
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/26; G01N33/28; G01N33/2888; G01N27/00; G01N27/02; G01N27/22; G01N27/226
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
AN INSTRUMENT FOR TESTING THE CONDITION OF A FLUID BY INDICATING AN ELECTRICAL PROPERTY THEREOF COMPRISING MEANS INCLUDING A FIRST ELECTRICALLY CONDUCTIVE MEMBER DEFINING A RECEPTACLE FOR A SAMPLE OF FLUID TO BE TESTED, SAID MEMBER INCLUDING A SPHERICALLY CONCAVE SURFACE PORTION, A SECOND ELECTRICALLY CONDUCTIVE MEMBER HAVING A SPHERICALLY CONVEX SURFACE PORTION, A PLURALITY OF SEPARATE SUPPORT MEANS MOUNTED IN SPACED RELATION WITHIN SAID RECEPTACLE TO ENGAGE SPACED PORTIONS OF SAID SPHERICALLY CONVEX SURFACE PORTION OF SAID SECOND MEMBER TO SUP-
Claim 2
Dependent Claim
82 words
AN INSTRUMENT FOR TESTING THE CONDITION OF A FLUID BY INDICATING AN ELECTRICAL PROPERTY THEREOF COMPRISING MEANS INCLUDING A FIRST ELECTRICALLY CONDUCTIVE MEMBER DEFINING A RECEPTACLE FOR A SAMPLE OF FLUID TO BE TESTED, SAID MEMBER INCLUDING A SPHERICALLY CONCAVE SURFACE PORTION, A SECOND ELECTRICALLY CONDUCTIVE MEMBER HAVING A SPHERICALLY CONVEX SURFACE PORTION, A PLURALITY OF SEPARATE SUPPORT MEANS MOUNTED IN SPACED RELATION WITHIN SAID RECEPTACLE TO ENGAGE SPACED PORTIONS OF SAID SPHERICALLY CONVEX SURFACE PORTION OF SAID SECOND MEMBER TO SUP-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |