Quieted servoactuator
US5363713A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 29, 1993 |
| Grant date | Nov 15, 1994 |
| Priority date | — |
| Expiry date | Apr 29, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19828
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A quieted motorized servoactuator with a sub-fractional horsepower high rpm, low voltage motor driving a gear train with about 900:1 reduction overall. The motor shaft has a metal worm meshing with a first stage thermoplastic elastomeric material, preferably polyamide polyester, of a hardness not greater than 72 on the Shore "D" scale. The first stage gear has an integral pinion meshed with a second stage gear of harder thermoplastic material, preferably acetal. The second stage gear has an integral pinion meshed with an output sector gear formed of harder thermoplastic material preferably comprising polyamide filled one-third by volume with fine glass particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.