US3003352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Testing method for ascertaining the saturation value of grey cast iron
Assignee: Individual
•
Filing: 1957-08-12
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Granted: 1961-10-10
•
Expires: 1977-08-12
Abstract
No abstract record available.
Inventors
- 👤 Ziegler Rolf
- 👤 Gerstner Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:01
CPC Classifications
C; C21; C21C; C21C1/00; C21C1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
206 words
A METHOD OF DETERMINING THE DEGREE OF SATURATION OF GREY IRON, WHICH COMPRISES FORMING BY CASTING A PLURALITY OF GREY IRON TEST SPECIMENS OF DIFFERENT CHEMICAL COMPOSITION AT A CONSTANT POURING TEMPERATURE, COOLING SAID SPECIMENS AT THE SAME RATE, CHEMICALLY ANALYZING SAID GREY IRON TEST SPECIMENS TO DETERMINE THE DEGREE OF SATURATION OF EACH SPECIMEN, SUBJECTING EACH OF SAID SPECIMENS TO ULTRASONIC IMPULSES TO DETERMINE THE APPARENT THICKNESS OF EACH OF SAID SPECIMENS, PRODUCING A GRAPH BY PLOTTING THE QUOTIENTS OBTAINED BY DIVIDING THE ACTUAL THICKNESS OF SAID GREY IRON TEST SPECIMENS AS DETERMINED BY MECHANICAL MEANS BY THE APPARENT THICKNESS AGAINST THE SATURATION VALUE OF SAID GREY IRON TEST SPECIMENS AND DRAWING A SUBSTANTIALLY STRAIGHT LINE THROUGH THE PLOTTED POINTS, AND SUBJECTING A GREY IRON SPECIMEN HAVING AN UNKNOWN DEGREE OF SATURATION TO ULTRASONIC IMPULSES TO DETERMINE THE APPARENT THICKNESS OF SAID SPECIMEN, SAID UNKNOWN SPECIMEN BEING POURED AT THE SAME TEMPERATURE AND COOLED AT THE SAME RATE AS SAID GREY IRON TEST SPECIMENS, SAID APPARENT THICKNESS THEN BEING DIVIDED INTO THE ACTUAL THICKNESS OF SAID UNKNOWN GREY IRON SPECIMEN AS DETERMINED BY MECHANICAL MEANS AND THE RESULTANT QUOTIENT LOCATED ON SAID GRAPH TO ESTABLISH THE CORRESPONDING SATURATION VALUE OF SAID UNKNOWN GREY IRON SPECIMEN.
Claim 2
Independent Claim
206 words
A METHOD OF DETERMINING THE DEGREE OF SATURATION OF GREY IRON, WHICH COMPRISES FORMING BY CASTING A PLURALITY OF GREY IRON TEST SPECIMENS OF DIFFERENT CHEMICAL COMPOSITION AT A CONSTANT POURING TEMPERATURE, COOLING SAID SPECIMENS AT THE SAME RATE, CHEMICALLY ANALYZING SAID GREY IRON TEST SPECIMENS TO DETERMINE THE DEGREE OF SATURATION OF EACH SPECIMEN, SUBJECTING EACH OF SAID SPECIMENS TO ULTRASONIC IMPULSES TO DETERMINE THE APPARENT THICKNESS OF EACH OF SAID SPECIMENS, PRODUCING A GRAPH BY PLOTTING THE QUOTIENTS OBTAINED BY DIVIDING THE ACTUAL THICKNESS OF SAID GREY IRON TEST SPECIMENS AS DETERMINED BY MECHANICAL MEANS BY THE APPARENT THICKNESS AGAINST THE SATURATION VALUE OF SAID GREY IRON TEST SPECIMENS AND DRAWING A SUBSTANTIALLY STRAIGHT LINE THROUGH THE PLOTTED POINTS, AND SUBJECTING A GREY IRON SPECIMEN HAVING AN UNKNOWN DEGREE OF SATURATION TO ULTRASONIC IMPULSES TO DETERMINE THE APPARENT THICKNESS OF SAID SPECIMEN, SAID UNKNOWN SPECIMEN BEING POURED AT THE SAME TEMPERATURE AND COOLED AT THE SAME RATE AS SAID GREY IRON TEST SPECIMENS, SAID APPARENT THICKNESS THEN BEING DIVIDED INTO THE ACTUAL THICKNESS OF SAID UNKNOWN GREY IRON SPECIMEN AS DETERMINED BY MECHANICAL MEANS AND THE RESULTANT QUOTIENT LOCATED ON SAID GRAPH TO ESTABLISH THE CORRESPONDING SATURATION VALUE OF SAID UNKNOWN GREY IRON SPECIMEN.
References Cited (Backward Citations)
US2461543A
Cited
US2559016A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-09 | 1965-04-10 | 1965-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-09 | 1969-04-10 | 1969-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-09 | 1973-04-10 | 1973-10-10 | $7700.00 | Window Closed / Lapsed |