Turbine sander
US4414781A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1981 |
| Grant date | Nov 15, 1983 |
| Priority date | — |
| Expiry date | Sep 1, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B23/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A turbine-driven sander includes a minimum of one-piece sealed housing members so interconnected as to form a nozzle, a turbine chamber, and a valve chamber. A plurality of elongated support members are integrally formed on a housing member. Fasteners are inserted in the elongated support members to clamp the housing members together. A flap valve mounted in the valve chamber opens the turbine chamber to a source of vacuum, thereby driving a turbine rotatably mounted in the turbine chamber. This rotation in turn vibrates a platen through a direct-drive system. The platen is supported upon one of the housing members by two platen support members. A noise attenuation system at the front end of the housing includes a two-passage nozzle which is curved to interrupt the line of sight from a turbine air inlet to the turbine. A side branch resonator communicates with the nozzle via noise-attenuating holes in a cover plate located above the nozzle. The nozzle configuration and the resonator coact to attenuate turbine air inlet noise and turbine vane noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.