US3849078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
A sealing ring of stainless iron base alloy
Assignee: Caterpillar Inc
•
Filing: 1972-10-19
•
Granted: 1974-11-19
•
Expires: 1992-10-19
Abstract
Abstract A highly corrosion and abrasion resistant stainless iron base alloy for metal-to-metal high speed seals consisting essentially of 3.1 to 3.65 percent carbon, 24 to 27 percent chromium, up to 0.9 percent manganese, up to 1.50 percent silicon and the balance iron.
Inventors
- 👤 G Gobble
- 👤 R Loebs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:43
CPC Classifications
C; C22; C22C; C22C37/00; C22C37/06; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12229; Y10T428/12264
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A SEALING RING HAVING A GENERALLY AXIALLY EXTENDING PORTION AND A GENERALLY RADIALLY EXTENDING FLANGE HAVING HIGH CORROSION AND ABRASION RESISTANCE MADE OF A STAINLESS IRON BASE ALLOY CONSISTING ESSENTIALLY OF 3.1 TO 3.65 PERCENT CARBON, 24 TO 27 PERCENT CHROMIUM UP TO 0.9 PERCENT MANGANESE UP TO 1.50 PERCENT SILICON AND THE BALANCE IRON.
Claim 2
Dependent Claim
55 words
A SEALING RING HAVING A GENERALLY AXIALLY EXTENDING PORTION AND A GENERALLY RADIALLY EXTENDING FLANGE HAVING HIGH CORROSION AND ABRASION RESISTANCE MADE OF A STAINLESS IRON BASE ALLOY CONSISTING ESSENTIALLY OF 3.1 TO 3.65 PERCENT CARBON, 24 TO 27 PERCENT CHROMIUM UP TO 0.9 PERCENT MANGANESE UP TO 1.50 PERCENT SILICON AND THE BALANCE IRON.
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) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |