| Original document(31 pages) 中文版 |
A disposable dental prophylaxis handpiece (10) is provided having a rotor (90) with vanes (92) pivotably connected thereto. The handpiece (10) includes an entrance (30) for elevated pressure fluid and an outlet (40) for discharge of the fluid after contacting the rotor (90). The elevated pressure fluid passes from the entrance (30), into a high pressure chamber (80). The high pressure chamber (80) is in contact with inlet ports (74) accessing a cylinder (72) within the handpiece (10). The cylinder (72) supports the rotor (90) with a rotational axis (M) of the rotor (90) off center with respect to a central axis (N) of the cylinder (72). The elevated pressure fluid causes the rotor (90) and an attached output shaft (97) to rotate. This in turn pauses a prophylaxis cup (60), coupled to the output shaft (97), to rotate. The rotor (90) includes a trunk (24) with a plurality of posts (93) extending therefrom and with vanes (92) connected to the posts (93) through hinges (94). The vanes (92) can pivot from a first position collapsed against the trunk (24) to a second position spaced away from the trunk (24). The vanes (92) thus can contact a cylindrical wall (78) of the cylinder (72) while the rotor (90) rotates. Exhaust ports (76) are spaced from the inlet ports (74) and provide communication with a low pressure chamber (82) which exhausts low pressure fluid to the outlet (40). |
Application Number
申请号 |
95195768 |
Application Date
申请日 |
1995.08.18 |
| Title 名称 |
Disposable dental prophylaxis handpiece |
Publication Number
公开号 |
1167432 |
Publication Date
公开日 |
1997.12.10 |
| Approval Pub. Date |
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Granted Pub. Date |
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| International Classification 分类号 |
A61C1/05 |
Applicant(s) Name
申请人 |
Denticator International, Inc. |
| Address 地址 |
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| Inventor(s) Name 发明人 |
J. L. Mendoza;P. T. Lingman;W. R. Maclay |
| Attorney & Agent 代理人 |
GUO HONGXIN |
| More information 更 多 信 息 |
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