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1. WO2003022170 - ROULEMENT A BILLES AMELIORE POUR PIECE A MAIN DENTAIRE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

What is claimed is:
1. A dental handpiece of the type having a rotor supported by a ball bearing assembly, said ball bearing assembly having at least one ball and an inner and an outer race, wherein the improvement comprises a configuration selected from an outer race having a thickened cross section as compared to said inner race, an outer race having a thinner cross section as compared to said inner race, an inner race having having a thickened cross section as compared to said outer race, an inner race having a thinner cross section as compared to said outer race, and combinations thereof.

2. A dental handpiece as in claim 1, wherein said inner race has an inner cross section, and said outer race has an outer cross section, wherein said outer race ball track has a cross section of about 0.22 inches, said inner race ball track has a cross section of about 0.165 inches, said inner race has an inner cross section of about 0.125 inches, and said outer race has a outer cross section of about 0.28 inches.
3. A dental handpiece as in claim 1, having an outer and an inner race ball bearing track, wherein said outer race ball track has a cross section of about 0.24 inches, said inner race ball track has a cross section of about 0.185 inches, said inner race has an inner cross section of about 0.14 inches, and said outer race has a outer cross section of about 0.28 inches.

4. A dental handpiece comprising a rotor, a ball bearing assembly supporting said rotor, said ball bearing assembly having at least one ball and a bearing, said bearing having an inner and an outer race, said outer race having a thickened cross section.
5. A dental handpiece as in claim 4, wherein said outer race has a cross section greater than about 0.25 inches.
6. A dental handpiece as in claim 4, wherein said outer race has a cross section of at least 0.28 inches.