Ball screw assembly
US6276225A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1999 |
| Grant date | Aug 21, 2001 |
| Priority date | — |
| Expiry date | Nov 12, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19749
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A ball screw assembly includes a screw shaft with a spiral groove, balls along the groove, a nut with the screw shaft relatively rotatable with the balls, and a seal device. A portion of each seal member is radially divided into blocks by plural slits so as to extend from one end surface directing outward in an axial direction of the nut to an axial intermediate portion of the seal member, each block having a pair of end faces, the end faces including one end face directed to a rotational direction of the nut with respect to the screw shaft when the screw shaft is screwed into the nut and another end face opposing to the other end face, this one end face being inclined so as to be gradually displaced, towards an outer peripheral side from an inner peripheral side of the seal member, in a direction reverse to the rotational direction with respect to a radial direction of the nut, and the other end face extending in this radial direction of the nut or in a direction inclined to a side reverse to the one end face with respect to the radial direction of the nut.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.