Miniature motor having an internal coolant line

Details Miniature motor having an internal coolant line Miniature motor having an internal coolant line

1977-12-12

1980-01-22

Peshock, Robert

Dentistry

Apparatus

Having intra-oral dispensing means

433104, A61C 108

Patent

active

041842561

ABSTRACT:
A miniature motor for driving a hand-held instrument such as a dental handpiece, the motor having at one end a connecting member for supplying coolant to a motor coolant line and motive energy to the motor, and at the other end a coupling member to which a hand-held instrument can be releasably connected. An intermediate coolant line in the coupling member serves to transfer coolant from the motor coolant line to a coolant supply line in the instrument which directs the coolant to a working implement at one end of the instrument. The coolant line in the motor comprises a tubular member which is removably mounted in the motor and has a releasable connection at its inlet end to a coolant supply connector in the connecting member, and a releasable connection at its outlet end to the intermediate coolant line in the coupling member. At least one of these releasable connections is provided in a closure member which is removable in order to render the tubular member accessible for servicing.

REFERENCES:
patent: 3425124 (1969-02-01), Hoffmeister
patent: 4007529 (1977-02-01), Fleer
patent: 4080737 (1978-03-01), Fleer

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