Drive shaft with a coupling arrangement
US4964839A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 1988 |
| Grant date | Oct 23, 1990 |
| Priority date | — |
| Expiry date | Oct 26, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S464/901
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A drive shaft connectable to a motor or geared motor and including a coupling arrangement attachable to tool shafts of rotating tools having, for example, heads for milling, polishing or grinding, so that easy handling of the tools is accomplished in processing small pieces of work and in beauty treatment applications while permitting easy connection to and rapid change of the tools with the coupling element. The drive shaft consists of flexible steel wire of circular profile, or of flexible steel wire with several concentric layers of wire wound around a core of flexible steel wire and having a circular profile and which is disposed in a tightly wound coiled tube made of synthetic material or steel wire. A tubular housing is attached to the coiled tube on the side away from the motor and in which a cylindrical coupling element is disposed, so that it can be rotated. A permanent magnet is secured in the coupling element whose rear end is firmly attached centrically to the forward end of the drive shaft. The coupling element has a hole of rectangular or polygonal cross-section in its front end-face running longitudinally and into which the cylindrical tool-shaft may be pressed throu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.