AC traction motor with drive end bearing assembly for locomotive
US5387039A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 1, 1993 |
| Grant date | Feb 7, 1995 |
| Priority date | — |
| Expiry date | Dec 1, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2326/10
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pinion end bearing assembly for supporting and sealing about a shaft which extends through the frame of a traction motor, such as an AC traction motor. The assembly having a rearward end plate assembly attached to the frame, a housing attached to the frame, the shaft extending through the housing and a rotatable element attached to and circumscribing the shaft between the housing and shaft. The rotatable element and the housing adapted to form a series of three labyrinth seals to restrain the flow of air from within the motor to a bearing chamber with the seals being separated by venting chambers to vent to a low pressure reservoir any air which may flow through the labyrinth seals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.