US2670281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel shot for blast cleaning, blast peening, and the like
Assignee: Wheelabrator Corp
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Filing: 1949-10-14
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Granted: 1954-02-23
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Expires: 1969-10-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Thomas J Hutchison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:57
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; C22C33/0257; C22C33/0264; B; B24; B24C; B24C11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
STEEL PELLETS SUCH AS USED IN BLAST CLEANING, BLAST PEENING AND THE LIKE, AND OF A SIZE BETWEEN 0.0054 TO 0.156 INCH DIAMETER CHARACTERIZED BY GOOD ROUNDNESS AND SOLIDITY, FREEDOM FROM DIMPLES, AND FREEDOM FROM CRACKS AND STRAINS AND HAVING A HARDNESS RANGING BETWEEN ABOUT 45 TO ABOUT 65 ROCKWELL C CLASSIFICATION, SAID PELLETS CONTAINING A PLURALITY OF INGREDIENTS OF WHICH THE FOLLOWING, IN THE PROPORTIONS STATED, ARE THE ONLY ELEMENTS NECESSARY TO OBTAIN SAID CHARACTERISTICS: FROM ABOUT 0.35 UP TO ABOUT 1.20% CARBON, FROM ABOUT 0.30 UP TO ABOUT 1.00% SILICON, AND SUITABLE STRENGTHENING ALLOYING METAL SELECTED FROM THE GROUP CONSISTING OF MANAGANESE 0.30 TO ABOUT 2.00%, MOLBDENUM 0.00 TO ABOUT 5%, NICKEL FROM 0.0 TO ABOUT 2.5%, COPPER FROM .0 TO ABOUT 1.00%, AND THE BALANCE IRON.
Claim 2
Dependent Claim
129 words
STEEL PELLETS SUCH AS USED IN BLAST CLEANING, BLAST PEENING AND THE LIKE, AND OF A SIZE BETWEEN 0.0054 TO 0.156 INCH DIAMETER CHARACTERIZED BY GOOD ROUNDNESS AND SOLIDITY, FREEDOM FROM DIMPLES, AND FREEDOM FROM CRACKS AND STRAINS AND HAVING A HARDNESS RANGING BETWEEN ABOUT 45 TO ABOUT 65 ROCKWELL C CLASSIFICATION, SAID PELLETS CONTAINING A PLURALITY OF INGREDIENTS OF WHICH THE FOLLOWING, IN THE PROPORTIONS STATED, ARE THE ONLY ELEMENTS NECESSARY TO OBTAIN SAID CHARACTERISTICS: FROM ABOUT 0.35 UP TO ABOUT 1.20% CARBON, FROM ABOUT 0.30 UP TO ABOUT 1.00% SILICON, AND SUITABLE STRENGTHENING ALLOYING METAL SELECTED FROM THE GROUP CONSISTING OF MANAGANESE 0.30 TO ABOUT 2.00%, MOLBDENUM 0.00 TO ABOUT 5%, NICKEL FROM 0.0 TO ABOUT 2.5%, COPPER FROM .0 TO ABOUT 1.00%, AND THE BALANCE IRON.
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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) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |