Bearing apparatus and method for feeding lubricant to bearing
US10208799B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 2017 |
| Grant date | Feb 19, 2019 |
| Priority date | — |
| Expiry date | Jan 24, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2233/00
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A bearing apparatus includes a lubrication unit and a sensor to sense the temperature of the lubricant in the lubrication unit. The lubrication unit has a pump having a storage portion in which the lubricant is stored and a piezoelectric body that is deformed by an applied voltage, the pump enabling the lubricant in the storage portion to be discharged into the annular space by reducing the volume of the storage portion in conjunction with the deformation of the piezoelectric body, the pump also enabling the lubricant to be sucked into the storage portion to refill the storage portion with the lubricant by increasing the volume of the storage portion, and a control unit that performs control by outputting a control signal allowing the speed of change in the volume of the storage portion to depend on the temperature of the lubricant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.