Planetary roller gear drive
US8888644B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 7, 2012 |
| Grant date | Nov 18, 2014 |
| Priority date | — |
| Expiry date | Jan 11, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19744
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Planetary roller gear drive with a spindle nut (1) that is arranged on a threaded spindle (2) and with a plurality of planets (3) that are arranged distributed around the periphery and are in rolling engagement with the threaded spindle (2) and the spindle nut (1). The threaded spindle (2) has a plurality of helical windings wound around the spindle axis forming at least one thread groove (8), and a sensor element (15) is arranged so that it cannot move in the axial direction relative to the spindle nut (1) and detects an axial displacement of the threaded spindle (2) and the spindle nut (1) relative to each other. The spindle nut (1) is supported so that it can rotate about the spindle axis on a housing (12) with the sensor element (15).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.