Oil damper for drum-type washing machine
US7637128B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 16, 2005 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Aug 11, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F9/54
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Oil damper for a drum type washing machine including a hollow cylinder having an oil chamber for filling oil therein, a tub holder fixedly secured to one end of the cylinder for securing the damper to a tub side, a shaft passed through, and exposed from the other end of the cylinder, a base holder fixedly secured to the shaft at an end thereof exposed to an outside of the cylinder for securing the damper to a base side of the cabinet, and a piston having a plurality of oil holes, for sliding inside of the cylinder, wherein at least one of above components is formed by plastic injection molding, thereby providing a new oil damper which reduces a production cost significantly, and has a good productivity, and high operation reliability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.