Patent US3138951A successfully refreshed from Google Patents.
US3138951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable hardness tester
Assignee: Individual
•
Filing: 1960-10-31
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Granted: 1964-06-30
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Expires: 1980-10-31
Abstract
No abstract record available.
Inventors
- 👤 Robert C Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:55
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/40; G01N3/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A HARDNESS TESTER COMPRISING, IN COMBINATION; A FRAME FORMED WITH TWO SPACES APART TRANSVERSELY-EXTENDING BRACKETS, PENETRATOR MOUNTED IN A FIRST ONE OF SAID BRACKETS AND POSITIONED ALONG A PENETRATION AXIS, MEANS MOUNTED ON SAID FIRST BRACKET FOR APPLYING A PREDETERMINED LOAD THROUGH SAID PENETRATOR ALONG SAID AXIS TO A WORK-PIECE, MEANS FOR MEASURING THE RESULTING MOVEMENT OF SAID PENETRATOR INTO THE WORK-PIECE ALONG SAID AXIS, A FIRST ANVIL ADJUSTABLY MOUNTED IN THE OHTER OF SAID BRACKETS FOR MOVEMENT TO ENGAGE THE WORK-PIECE ALONG SAID PENETRATION AXIS, A SECOND ANVIL ADJUSTABLY MOUNTED IN SAID FRAME FOR MOVEMENT TO ENGAGE THE WORK-PIECE ALONG AN AXIS NORMAL TO SAID PENETRATION AXIS, AND YOKE MEANS ADJUSTABLY MOUNTED IN SAID FRAME AND EXTENDING PARALLEL TO SAID PENETRATION AXIS ACROSS SAID NORMAL AXIS FOR MOVEMENT TO ENGAGE THE WORK-PIECE UPON A SURFACE THEREOF OPPOSITE SAID SECOND ANVIL TO SUPPORT SAID HARDNESS TESTER UPON THE WORK-PIECE.
Claim 2
Dependent Claim
149 words
A HARDNESS TESTER COMPRISING, IN COMBINATION; A FRAME FORMED WITH TWO SPACES APART TRANSVERSELY-EXTENDING BRACKETS, PENETRATOR MOUNTED IN A FIRST ONE OF SAID BRACKETS AND POSITIONED ALONG A PENETRATION AXIS, MEANS MOUNTED ON SAID FIRST BRACKET FOR APPLYING A PREDETERMINED LOAD THROUGH SAID PENETRATOR ALONG SAID AXIS TO A WORK-PIECE, MEANS FOR MEASURING THE RESULTING MOVEMENT OF SAID PENETRATOR INTO THE WORK-PIECE ALONG SAID AXIS, A FIRST ANVIL ADJUSTABLY MOUNTED IN THE OHTER OF SAID BRACKETS FOR MOVEMENT TO ENGAGE THE WORK-PIECE ALONG SAID PENETRATION AXIS, A SECOND ANVIL ADJUSTABLY MOUNTED IN SAID FRAME FOR MOVEMENT TO ENGAGE THE WORK-PIECE ALONG AN AXIS NORMAL TO SAID PENETRATION AXIS, AND YOKE MEANS ADJUSTABLY MOUNTED IN SAID FRAME AND EXTENDING PARALLEL TO SAID PENETRATION AXIS ACROSS SAID NORMAL AXIS FOR MOVEMENT TO ENGAGE THE WORK-PIECE UPON A SURFACE THEREOF OPPOSITE SAID SECOND ANVIL TO SUPPORT SAID HARDNESS TESTER UPON THE WORK-PIECE.
References Cited (Backward Citations)
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US1817170A
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US2384437A
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US2466567A
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US2722831A
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US2643544A
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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) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |