Hand-held piece for dental or surgical use including a...

Details Hand-held piece for dental or surgical use including a... Hand-held piece for dental or surgical use including a...

2007-12-04

2007-12-04

Gartenberg, Ehud (Department: 3709)

Dentistry

Apparatus

Having motor or means to transmit motion from motor to tool

C433S127000

Reexamination Certificate

active

11424355

ABSTRACT:
In a hand held piece for dental or surgical use comprising a resilient clamp (20) for holding the cylindrical shank (16) of a tool, the height of the head (3) of the piece can be reduced owing to an inverted arrangement of the clamp in relation to the arrangement of the prior art. The clamp is slideably mounted in a hollow shaft (6), its flexible jaws (31) being directed forwards to enter into contact with a loosening sleeve (19) fixed in a front end of the shaft, i.e. on the tool side. The clamp is longitudinally connected to a pusher (22) manually activated by the operator for opening the clamp. A snap fit device (28) offers a higher initial resistance to movement of the clamp than the standard minimum axial pull force of the tool.

REFERENCES:
patent: 4874314 (1989-10-01), Fleer et al.
patent: 5165896 (1992-11-01), Hain et al.
patent: 29 05 484 (1979-08-01), None
patent: 0 276 259 (1988-07-01), None
patent: 0 505 599 (1992-09-01), None
European Search Report issued in corresponding application No. EP 05 01 2853 completed Nov. 11, 2005.

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