Abrading – Machine – Sandblast
Patent
1997-05-27
1999-12-21
Rose, Robert A.
Abrading
Machine
Sandblast
451101, B24C 504
Patent
active
060041919
ABSTRACT:
Disclosed is an improved apparatus for delivery of pressurized particulate matter against a surface or target to abrade, etch, erase, cut, penetrate, smooth, clean, polish and/or harden the surface or target. The most important use to which the present invention is adapted is use by dentists and oral hygienists to very effectively clean teeth, employing a particulate matter such as aluminum oxide, while at the same time having no effect on soft tissue such as the gums. This is accomplished using a prefilled, sealed, and disposable fluidizing chamber and cannula assembly that avoids contamination and which has already been approved by the FDA for dental use. Included is a fluidizing chamber having a discharge end of an inlet tube that is disposed below or overlaps the intake end of the cannula such that the discharge of the inlet tube blows the particulate matter into the fluid above the intake end of the cannula, thereby suspending it therein, without clogging. The invention further provides for a custom designed double acting safety check valve to prevent backflow of particulate matter in the event of a drop in pneumatic pressure, and also to prevent excessive pressure from reaching the fluidizing chamber and cannula in the event of a pressure surge. Another feature of the invention includes a tapered nozzle and optionally bent cannula. The check valve attaches to the pre-existing pneumatic pressure line of a dental office pedestal.
REFERENCES:
patent: 2441441 (1948-05-01), Paasche
patent: 2725684 (1955-12-01), Crowe
patent: 3631631 (1972-01-01), Greenstein
patent: 4475370 (1984-10-01), Stark et al.
patent: 4941298 (1990-07-01), Fernwood et al.
patent: 5123206 (1992-06-01), Woodson
Schur Henry B.
Trafton John E.
Rose Robert A.
Simplex Medical Systems, Inc.
Van Der Wall Robert J.
LandOfFree
Particulate matter delivery device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Particulate matter delivery device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Particulate matter delivery device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-500050