Antifriction screw drive
US5535638A · kind A · utility
2Cited by
21References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 10, 1994 |
| Grant date | Jul 16, 1996 |
| Priority date | — |
| Expiry date | Nov 10, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19758
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A screw and nut have intermeshed helical threads which may be of a form selected from a variety of shapes; for example, a buttress thread. A ball track is formed by cooperating grooves in opposing flanks of the screw and nut threads, and a circuit of balls are disposed within the ball track. The result is a screw system with improved thrust load-carrying capability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.