Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1981-09-01
1983-11-15
Parker, Roscoe V.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51174, B24B 2300, B24B 4706
Patent
active
044147813
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.
REFERENCES:
patent: 2340437 (1944-02-01), Stoner
patent: 2342905 (1944-02-01), Smellie
patent: 2683276 (1954-07-01), Olsen
patent: 2701892 (1955-02-01), Mingus
patent: 2904817 (1959-09-01), Brennan
patent: 3071799 (1963-01-01), Jepson et al.
patent: 3246359 (1966-04-01), Griffiths
patent: 3262199 (1966-07-01), Magarian
patent: 3722147 (1973-03-01), Brenner
Langenberg Anthony J.
Overy Colin
Powell Arthur
Rodowsky, Jr. Stanley
Black & Decker Inc.
Parker Roscoe V.
Sherer R. B.
Weinstein Harold
Yocum Charles E.
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