Circulation member of ball screw and ball screw using same
US7040189B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2002 |
| Grant date | May 9, 2006 |
| Priority date | — |
| Expiry date | May 7, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19767
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A circulation member of a ball screw for circulating a ball rolling on a spiral ball rolling groove formed on a screw shaft. The circulation member includes a central portion and a pair of leg portions disposed at both ends of the central portion so as to extend therefrom, the leg portions having inner peripheries having center lines inclined in directions different from each other with respect to a center line of an inner periphery of said central portion. The leg portions also have outer peripheries having center lines being parallel to each other and have thicknesses, different in circumferential directions thereof, at cross sections in directions normal to center lines of the outer peripheries of the respective leg portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.