US4153017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alloyed chilled iron
Assignee: Precision Engine Products Corp
•
Filing: 1977-05-16
•
Granted: 1979-05-08
•
Expires: 1997-05-16
Abstract
Abstract A vehicle engine component has a specific compositon of alloyed chilled iron in which molybdenum is the major alloying element, thus producing a chilled iron with a more thermally stable carbide combined with a matrix which is stronger and more fatigue-resistant.
Inventors
- 👤 Robert C. Behnke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:38
CPC Classifications
C; C22; C22C; C22C37/00; F; F01; F01L; F01L1/00; F01L1/12; F01L1/14
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
77 words
An internal combustion engine tappet to be used in the as cast condition on steel camshafts and having high resistance to spalling and scuffing comprising a body having at least a wearing surface formed of chilled high strength alloy cast iron consisting essentially of the following composition: ______________________________________
Element Percent by Weight
______________________________________
Carbon 3.10-3.60
Silicon 2.00-2.90
Manganese 0.60-0.90
Chromium 0.20-0.80
Nickel 0.30-0.60
Molybdenum 1.50-5.00
Vanadium 0.10-0.50
Iron (plus minor
sulphur and phos-
phorus elements) Balance
______________________________________
Claim 2
Dependent Claim
77 words
An internal combustion engine tappet to be used in the as cast condition on steel camshafts and having high resistance to spalling and scuffing comprising a body having at least a wearing surface formed of chilled high strength alloy cast iron consisting essentially of the following composition: ______________________________________
Element Percent by Weight
______________________________________
Carbon 3.10-3.60
Silicon 2.00-2.90
Manganese 0.60-0.90
Chromium 0.20-0.80
Nickel 0.30-0.60
Molybdenum 1.50-5.00
Vanadium 0.10-0.50
Iron (plus minor
sulphur and phos-
phorus elements) Balance
______________________________________
Claim 3
Dependent Claim
15 words
The structure of claim 1 in which the percent by weight of molybdenum is 1.80-2.20.
References Cited (Backward Citations)
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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) | 1982-05-07 | 1982-11-06 | 1983-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-07 | 1986-11-06 | 1987-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-07 | 1990-11-06 | 1991-05-08 | $7700.00 | Window Closed / Lapsed |