US3682519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antifriction bearing
Assignee: MO VECHERNY METALLURGISHESKY I
•
Filing: 1970-07-15
•
Granted: 1972-08-08
•
Expires: 1990-07-15
Abstract
Abstract The present invention relates to the antifriction bearings used, in particular, on railway transport. The invention consists in that the races and rolling elements of the bearing have a constant chemical composition of steel throughout their volume with a carbon content of 0.8 - 1.2 percent and have a hardened layer at least on the rolling surfaces with a hardness of 58 - 65 HRC, the depth of this layer being 0.1 - 0.3 of the wall thickness of the race, and hardened to 30 - 45 HRC. The invention also claims a method of heat treatment of the races and rolling elements wherein surface hardening is carried out by a single through heating to temperatures above AI and by intensive cooling.
Inventors
- 👤 Konstantin Zakh Shepelyakovsky
- 👤 Boris Konstantinovich Ushakov
- 👤 Vasily Petrovich Devyatkin
- 👤 Vladimir Fedorovich Devyatkov
- 👤 Vasily Ivanovich Shakhov
- 👤 Nikolai Nikolaevich Kachkanov
- 👤 Leon Alexandrovich Gazarov
- 👤 Valentina Mikhailovn Pchelkina
- 👤 Mikhail Alexandrovich Derbunov
- 👤 Vladislav Valentinovi Vologdin
- 👤 Isaak Nokhimovich Shklyarov
- 👤 Veniamin Davydovich Kalner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:33
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/30; F16C33/34; F16C33/58; F16C33/62; F16C33/64; F16C19/00; F16C19/22; F16C19/24; F16C19/26; F16C2202/00; F16C2202/02; F16C2202/04; F16C2204/00; F16C2204/60; F16C2204/66; F16C2223/00; F16C2223/10; F16C2326/00; F16C2326/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
17 words
An antifriction bearing according to claim 1 wherein said races and rolling elements are surface-hardened all over.
Claim 2
Dependent Claim
35 words
An antifriction bearing according to claim 1 wherein said races and rolling elements are made of steel containing 0.9- 1.1 percenT carbon, 0.3- 0.5 percent chromium, 0.1- 0.3 percent silicon and 0.1- 0.3 percent manganese.
Claim 3
Dependent Claim
35 words
An antifriction bearing according to claim 1 wherein said races and rolling elements are made of steel containing 0.9- 1.1 percent carbon, 0.4- 0.6 percent chromium, not over 0.1 percent silicon and 0.1- 0.3 manganese.
References Cited (Backward Citations)
GB544247A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |