Ball nut and screw assemblies and methods of attaching extensions or housings to the ball nuts thereof
US5485760A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 10, 1994 |
| Grant date | Jan 23, 1996 |
| Priority date | — |
| Expiry date | May 10, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18592
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A ball nut and screw assembly with a screw having exterior helical ball carrying groove portions separated by land portions and a co-axial nut having complemental, helical interior ball carrying groove portions separated by land portions with the same lead as said screw groove and land portions has, an end attachment for the nut with a reduced diameter sleeve extending axially therefrom. The sleeve has helical exterior thread portions, of the same lead as the nut groove portions, which are of a matching configuration and are threaded into one end of the nut. The sleeve has an interior diameter which receives and passes the screw without interacting with the screw. A recirculating train of load bearing balls is accommodated within nut and screw groove portions which are axially spaced from the sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.