Patent US3283567A successfully refreshed from Google Patents.
US3283567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal hardness tester
Assignee: Individual
•
Filing: 1965-12-09
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Granted: 1966-11-08
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Expires: 1985-12-09
Abstract
No abstract record available.
Inventors
- 👤 Dale H Fietz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:27
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A DEVICE FOR USE IN DETERMINING HARDNESS IN A MATERIAL INTERNALLY THEREOF USING A BORE HOLE IN THE MATERIAL, COMPRISING A GUIDE TUBE ARRANGED TO EXTEND INTO A BORE HOLE; A SUPPORT BODY TELESCOPED IN SAID GUIDE TUBE, AND SAID SUPPORT BODY TERMINATING IN A THREADED CONICAL PORTION AT ONE END AND AN OPPOSITE END; THERE BEING A PLURALITY OF OPENINGS IN SAID GUIDE TUBE JUXTAPOSED AROUND SAID CONICAL PORTION; A PRESSURE PAD HAVING AN OUTER SURFACE ARRANGED TO BEAR AGAINST THE SURFACE OF THE BORE HOLE AND A THREADED INNER SURFACE MATING WITH SAID THREADED CONICAL PORTION MOUNTED IN EACH SAID OPENING AND ARRANGED FOR LIMITED RECIPROCABLE MOVEMENT IN SAID OPENINGS; MEANS FOR PREVENTING TURNING OF SAID GUIDE TUBE MEANS; MEANS ON SAID SUPPORT BODY FOR ROTATING THE SAME SO AS TO RECIPROCABLY MOVE THE PRESSURE PADS INWARDLY AND OUTWARDLY IN RELATION TO SAID GUIDE TUBE MEANS; AND MEANS FOR MEASURING THE ROTATION OF SAID SUPPORT MEANS; WHEREBY ROTATION OF SAID SUPPORT MEANS INDICATES THE RELATIVE HARDNESS OF THE MATERIAL BEING TESTED.
Claim 2
Independent Claim
173 words
A DEVICE FOR USE IN DETERMINING HARDNESS IN A MATERIAL INTERNALLY THEREOF USING A BORE HOLE IN THE MATERIAL, COMPRISING A GUIDE TUBE ARRANGED TO EXTEND INTO A BORE HOLE; A SUPPORT BODY TELESCOPED IN SAID GUIDE TUBE, AND SAID SUPPORT BODY TERMINATING IN A THREADED CONICAL PORTION AT ONE END AND AN OPPOSITE END; THERE BEING A PLURALITY OF OPENINGS IN SAID GUIDE TUBE JUXTAPOSED AROUND SAID CONICAL PORTION; A PRESSURE PAD HAVING AN OUTER SURFACE ARRANGED TO BEAR AGAINST THE SURFACE OF THE BORE HOLE AND A THREADED INNER SURFACE MATING WITH SAID THREADED CONICAL PORTION MOUNTED IN EACH SAID OPENING AND ARRANGED FOR LIMITED RECIPROCABLE MOVEMENT IN SAID OPENINGS; MEANS FOR PREVENTING TURNING OF SAID GUIDE TUBE MEANS; MEANS ON SAID SUPPORT BODY FOR ROTATING THE SAME SO AS TO RECIPROCABLY MOVE THE PRESSURE PADS INWARDLY AND OUTWARDLY IN RELATION TO SAID GUIDE TUBE MEANS; AND MEANS FOR MEASURING THE ROTATION OF SAID SUPPORT MEANS; WHEREBY ROTATION OF SAID SUPPORT MEANS INDICATES THE RELATIVE HARDNESS OF THE MATERIAL BEING TESTED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |