Title: Contra-angle head for driving two dental tools

Abstract: A contra-angle tool holder head notably for dental drills and cutters, for rotatably driving in opposite directions two coaxial dental tools such as drills or cutters comprises a first holding member adapted to drive the first tool and consisting of a claw supporting a first bevel pinion and a second holding member for rotatably driving the second tool in the opposite direction, this second holding member consisting of a second hollow bevel pinion, both holding members being driven simultaneously from a third bevel pinion carried by a shaft driven in turn from the motor and disposed between the first and second bevel pinions, the axis of the drive being disposed at right angles to the common axis of the first and second bevel pinions and of their holding members.

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Inventors: Leonard, Henri (Besancon, FR)

Application Number: 898779
Filing Date: 1978-04-21
Publication_date: 1980-10-07
Assignee: Micro-Mega S.A. (Besancon, FR)
Primary Class(es): 433/133 408/36
Other Classes:
US Patent Ref:

1195145	Aug, 1916	Mattingly	408/36.
1267629	May, 1918	Chayes	32/27.
1781508	Nov, 1930	Gross et al.	32/27.
1824398	Sep, 1931	Fleischhacker	32/27.
2813337	Nov, 1957	Uhler	32/27.
3037282	Jun, 1962	Aktarian et al.	32/27.
3389468	Jun, 1968	Lewis et al.	32/59.

Other Refs: 2307548

Aug, 1973	DE

Primary Examiner: Mancene, Louis G.
Assistant Examiner: Wilson, John J.
Attorney: Burns; Robert E., Lobato; Emmanuel J., Adams; Bruce L.