Albert Lloyd French, JR
Physician in Lebanon, OR
License number
Colorado 11689
Issued Date
Jul 11, 1950
Renew Date
Dec 31, 1976
Expiration Date
Dec 31, 1976
Type
Physician
Address
Address
Lebanon Comm Medical Ctr, Lebanon, OR 97355
Professional information
Apparatus And Method For Particle Feeding By Pressure Regulation
US Patent:
6083001, Jul 4, 2000
Filed:
Oct 13, 1998
Appl. No.:
9/172327
Inventors:
Joe D. Deardon - San Diego CA
Gregory S. Dollard - San Diego CA
Geoffery L. Davis - Albany OR
Albert L. French - Lebanon OR
V. Kim Kutsch - Albany OR
Gregory S. Dollard - San Diego CA
Geoffery L. Davis - Albany OR
Albert L. French - Lebanon OR
V. Kim Kutsch - Albany OR
Assignee:
Kreativ, Inc. - San Diego CA
International Classification:
A61C 302
US Classification:
433 88
Abstract:
The invention enables accurate control of particle flow with regard to feeding abrasive material to a surface. The unit does not employ a vibrator and may be used to remove undesired material from a surface. A particular application is in a dental air abrasion unit for both cleaning and cutting tooth surfaces. When used in an air abrasion dental instrument, the abrasive material is stored in a container which is separated from a mixing chamber by an orifice member. The flow of particles is electronically controlled by the differential in pressure in the container section above the particle level and the pressure below an orifice member in a mixing chamber. The resulting particle flow to the surface is substantially linear and less erratic than that of prior air abrasion instruments.