Tools – Wrench – screwdriver – or driver therefor – Responsive to torque on work
Patent
1999-08-21
2000-10-31
Scherbel, David A.
Tools
Wrench, screwdriver, or driver therefor
Responsive to torque on work
81471, 81472, B25B 23159
Patent
active
061385395
ABSTRACT:
A dental torque ratchet head and driver handle (8) is formed with a chamber (12a) between first (30) and second (32) pivotably mounted handle members which receives a plastic insert (14) formed in a configuration selected so that the insert fractures at a selected torque to thereby ensure the application of a precalibrated level or torque to an abutment or prosthetic screw of an implant. A solid metal insert (14') can be used to convert the tool to a straight ratchet tool.
REFERENCES:
patent: 2766648 (1956-10-01), Jazwieck
patent: 5129293 (1992-07-01), Larson et al.
Balfour Alan R.
Carchidi Joseph Edward
ACE Surgical Supply Co., Inc.
Haug John A.
Ojini Anthony
Scherbel David A.
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