Patent · US Active

Direct drum bushing

US10663000B2 · kind B2 · utility

0Cited by
2References
16Claims
0Family size

Assignee

Inventor

Key dates

Filing dateOct 17, 2018
Grant dateMay 26, 2020
Priority date—
Expiry dateOct 17, 2038

Classification

  • Technology area (CPC F)Mechanical Engineering; Lighting; Heating
  • CPC primaryF16C2361/43
  • WIPO fieldMechanical elements
  • WIPO sectorMechanical engineering

Abstract

An improved bushing restricts exhaust at a lube transfer port and exhaust ports equalizing bushing lube PSI with lube supply PSI. A hole or pair of holes in the bushing with an area equal to that of the lube supply holes in a center support regulates an intermediate pressure to the bushings of 50% of the supply pressure on its own, regardless of the balance piston. When the balance piston is filled, the added resistance at the transfer orifices will begin to equalize bushing lube PSI with lube supply PSI. When the balance piston exhaust ports are also restricted, as with an increased height of the bushing and installation site, equalization is insured and bushing lube PSI becomes that of the supply PSI.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.