Linear differential mechanism
US4730503A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 13, 1986 |
| Grant date | Mar 15, 1988 |
| Priority date | — |
| Expiry date | Jan 13, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19707
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A differential mechanism including a housing, an elongate shaft disposed in the housing which is coupled to an object to be moved with the shaft defining a ring-handed thread along a first portion thereof and a left-handed thread along a second portion thereof. A right-handed nut is mounted on the first portion of the shaft in engagement with the right-handed thread, and a left-handed nut is mounted on the second portion of the shaft in engagement with the left-handed thread, with the right-handed and left-handed nuts being fixedly mounted for independent rotation within the housing, whereby selective rotation and prevention of rotation of said right-handed and left-handed nuts effects rotational and/or translational movement of said shaft relative to said housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.