Wire conducting rotary coupling having separate torque conducting and flexure load members
US4936427A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 31, 1988 |
| Grant date | Jun 26, 1990 |
| Priority date | — |
| Expiry date | Oct 31, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S136/292
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rotary coupling for transmitting torque across a plurality of flexible electrical wires is disclosed herein. The coupling generally comprises a tubular assembly for resisting flexure loads applied to the coupling that has a fixed portion and a rotatable portion, and a shaft member concentrically disposed within the tubular assembly for transmitting torque. First and second connectors are mounted around the inner wall of the fixed and rotatable portions of the tublular assembly, respectively and the second connector mechanically mounts the rotatable portion of the tubular assembly with the shaft member. A plurality of flexible electrical wires are disposed between the inner wall of the tubular assembly and the outer wall of the shaft member. Each of these wires includes a slack poriton which is loosely wound around the shaft member and connected at either end to the first and second connectors, respectively. The disposition of the electrical wires within the tubular assembly obviates the need for a separate housing around the rotary coupling, and the provision of a mechanically separate flexure-resisting tubular assembly and torque-transmitting shaft results in a coupling having a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.