Dust-proof cover for linear guide
US4886375A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 9, 1989 |
| Grant date | Dec 12, 1989 |
| Priority date | — |
| Expiry date | Mar 9, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2322/39
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A dust-proof cover for preventing foreign particles from attaching or depositing on the surface of a guide rail of a linear guide apparatus includes, for example, four hollow-square cover elements connected telescopically. The dust-proof cover has an open bottom portion with edge portions extending axially and extending inwardly from both lower edges of the side walls of the dust-proof cover. Two of the cover elements respectively have pairs of sphere members held rollably in the inside of both side edge portions so that the pairs of sphere members protrude inwardly into ball rolling grooves formed in both sides of the guide rail. The dust-proof cover can be extended and contracted smoothly by being guided by the pairs of sphere members rolling in the ball rolling grooves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.