GB527842A - Improvements in or relating to resilient ring elements and means for making same - Google Patents
Improvements in or relating to resilient ring elements and means for making sameInfo
- Publication number
- GB527842A GB527842A GB11784/39A GB1178439A GB527842A GB 527842 A GB527842 A GB 527842A GB 11784/39 A GB11784/39 A GB 11784/39A GB 1178439 A GB1178439 A GB 1178439A GB 527842 A GB527842 A GB 527842A
- Authority
- GB
- United Kingdom
- Prior art keywords
- zone
- april
- heat treatment
- pistons
- hardened
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatment Of Articles (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
527,842. Surface hardening pistons &c. BUDD INDUCTION HEATING, Inc. April 19, 1939, Nos. 11784 and 11785. Convention dates, April 23, 1938, and Nov. 16, 1938. Drawings to Specification. [Class 72] [Also in Groups XXVI and XXII] Split pistons, piston rings, and like resilient bearing elements have only one face hardened to a substantially uniform degree through an annular zone adjacent thereto by electromagnetic induction heat treatment, the remainder of the element being unhardened and unaffected by the heat treatment and uniformly soft. Preferably the element is made from carbon steel containing manganese, phosphorus, sulphur, and chromium, so as to form an inner zone of martensite, and an outer zone of sorbite, with or without a relatively thin intermediate zone of troostite. The hardened zone may be made to vary in thickness circumferentially by asymmetric heating and/or quenching. The inner and outer surfaces of the element may be non-concentric. Specifications 490,514 and 520,479 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US527842XA | 1938-04-23 | 1938-04-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB527842A true GB527842A (en) | 1940-10-17 |
Family
ID=21979863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11784/39A Expired GB527842A (en) | 1938-04-23 | 1939-04-19 | Improvements in or relating to resilient ring elements and means for making same |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB527842A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3735992A (en) * | 1972-03-14 | 1973-05-29 | I S Prostorov | Piston ring |
-
1939
- 1939-04-19 GB GB11784/39A patent/GB527842A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3735992A (en) * | 1972-03-14 | 1973-05-29 | I S Prostorov | Piston ring |
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