Brushing – scrubbing – and general cleaning – Machines – Brushing
Patent
1987-01-13
1988-04-26
Feldman, Peter
Brushing, scrubbing, and general cleaning
Machines
Brushing
15180, 433166, A46B 1302
Patent
active
047395320
ABSTRACT:
A bristle shaft device for use in disinfecting subgingival parodontal pockets, parodontal pocket edges and tooth surfaces, the device having a rotationally symmetrical gingival edge cup having an axis and an external periphery and a plurality of coaxial bristle shafts arranged coaxially in a ring and held in position by the cup. The shafts project from the external periphery and are formed as individual radially adjacent layers. One of the layers extend beyond the other layers so as to have an exposed end and can penetrate into a subgingival parodontal pocket up to a ligamentum circulare. Another layer adjacent to the one layer resists a bending of the exposed layer. The remaining layers are formed as multiple stepped layers that drop off in steps from each other in a radially outward direction providing further reinforcement. The one layer is radially innermost of the rest of the layers. Both the one layer and the adjacent another layer project beyond the remaining layers. The exposed end of the one layer is formed with a projection so as to form an individual, coaxial bristle shaft ring.
REFERENCES:
patent: 3404422 (1968-10-01), Warner
patent: 4020522 (1977-05-01), Behrend
Feldman Peter
Striker Michael J.
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