An extensible and contractable bellows adapted to be mounted about a shaft. The bellows includes a hollow body portion that is substantially cylindrical and unstressed when extended, and also includes a plurality of internal ribs adapted to engage the shaft and form lubricating chambers therebetween. The chambers are filled with a suitable fluid such as oil or air, for lubricating the shaft. A plurality of notched passageways or nibs, formed with the ribs, permits and controls flow of the lubricant between the chambers.
RELATED APPLICATIONS
This application is a continuation-in-part of parent application Ser. No. 751,608, filed Aug. 9, 1968, by Joe W. Dobkins for "Lubricant-Filled Bellows for Shafts."
Improved piston shaft seals for end-of-car hydraulic cushioning devices. Comprising an improved combination of annular oil scraper seals, and improved annular reinforced oil scraper seal, for use in an end-of-car hydraulic cushioning device.
An improved piston shaft seal assembly and seal arrangement therein for end-of-car hydraulic cushioning units including an improved seal retainer, an improved first oil scraper abutting the improved seal retainer, an improved reinforced oil seal abutting the improved first seal retainer and a second improved oil seal abutting the improved reinforced oil seal. Optionally, the improved piston shaft seal assembly may include an annular spacer.
