Patent US3077771A successfully refreshed from Google Patents.
US3077771A
Expired / Lapsed
US
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Hardness measuring apparatus
Assignee: Individual
•
Filing: 1959-05-06
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Granted: 1963-02-19
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Expires: 1979-05-06
Abstract
No abstract record available.
Inventors
- 👤 Ernst Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:48
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/40; G01N3/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
IN A HARDNESS MEASURING APPARATUS, THE COMBINATION COMPRISING A CASING WITH A MEASURING MEANS AND A LOWER SURFACE CONTAINING AN OPENING THEREIN, A PENETRATING MEANS SLIDABLY POSITIONED WITHIN SAID CASING, SAID PENETRATING MEANS HAVING A TIP PORTION ADAPTED TO EXTEND THROUGH THE LOWER SURFACE OF THE CASING AND ALSO HAVING AN UPPER PORTION CONNECTED TO SAID MEASURING MEANS, CALIBRATED SPRING MEANS IN SAID CASING ADAPTED TO APPLY PRESSURE TO THE PENETRATING MEANS, DELAYING MEANS CONNECTING THE CALIBRATED SPRING MEANS TO THE PENETRATING MEANS, PRELIMINARY SURFACE-CONTACTING MEANS SLIDABLY MOUNTED WITH RESPECT TO SAID CASING AND ADAPTED TO BE SLIDABLY EXTENDED FROM SAID LOWER SURFACE OF THE CASING TO A POINT BEYOND THE GREATEST EXTENSION OF SAID PENETRATING TIP, MEANS CONNECTING ONE PART OF SAID DELAYING MEANS TO SAID CALIBRATED SPRING, WHEREBY THE LOWER SURFACE OF SAID CASING MAY BE
Claim 2
Dependent Claim
138 words
IN A HARDNESS MEASURING APPARATUS, THE COMBINATION COMPRISING A CASING WITH A MEASURING MEANS AND A LOWER SURFACE CONTAINING AN OPENING THEREIN, A PENETRATING MEANS SLIDABLY POSITIONED WITHIN SAID CASING, SAID PENETRATING MEANS HAVING A TIP PORTION ADAPTED TO EXTEND THROUGH THE LOWER SURFACE OF THE CASING AND ALSO HAVING AN UPPER PORTION CONNECTED TO SAID MEASURING MEANS, CALIBRATED SPRING MEANS IN SAID CASING ADAPTED TO APPLY PRESSURE TO THE PENETRATING MEANS, DELAYING MEANS CONNECTING THE CALIBRATED SPRING MEANS TO THE PENETRATING MEANS, PRELIMINARY SURFACE-CONTACTING MEANS SLIDABLY MOUNTED WITH RESPECT TO SAID CASING AND ADAPTED TO BE SLIDABLY EXTENDED FROM SAID LOWER SURFACE OF THE CASING TO A POINT BEYOND THE GREATEST EXTENSION OF SAID PENETRATING TIP, MEANS CONNECTING ONE PART OF SAID DELAYING MEANS TO SAID CALIBRATED SPRING, WHEREBY THE LOWER SURFACE OF SAID CASING MAY BE
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) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |