Parapulper restorative pin and driver assembly

Details Parapulper restorative pin and driver assembly Parapulper restorative pin and driver assembly

1987-07-06

1989-02-07

Wilson, John J.

Dentistry

Method or material for testing, treating, restoring, or...

Anchor pin

433128, 433134, A61C 504

Patent

active

048028487

ABSTRACT:
The parapulper restorative pin comprises a stem provided with a handle permitting to operate it manually, the dentist rotating this handle by gripping it between his fingers. This handle is provided with four longitudinal grooves constituting holds for four longitudinal fingers provided at the front end of a stem constituting a driving member intended to be connected to a motor driving mechanism, for example a dental engine. The engagement of the fingers with the grooves of the handle not only renders the stem of the driving member angularly rigid with the stem of the pin but, moreover, renders these two elements also rigid axially, owing to the fact that the said engagement is a friction fit, that facilitates the presentation of the pin opposite the hole of the dental root into which it has to be screwed.

REFERENCES:
patent: 3369298 (1968-02-01), Weissman et al.
patent: 4053982 (1977-10-01), Weissman
patent: 4299571 (1981-11-01), McSpadden
patent: 4451237 (1984-05-01), Filhol
patent: 4692116 (1987-09-01), Filhol

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