Electrically driven optical instrument with manual drive

Details Electrically driven optical instrument with manual drive Electrically driven optical instrument with manual drive

1979-02-28

1980-11-25

Corbin, John K.

350 76, 350 77, 350187, G02B 708

Patent

active

042355095

ABSTRACT:
An electrically driven optical instrument such as stereo-microscope is provided with a transfer shaft rotatably carrying a drive transmitting, transfer gear. An axial displacement of the transfer gear occurs in response to an external operation to move the transfer gear selectively to a first position in which it meshes with an output gear on a motor and a second position in which it meshes with a manually driven gear that is mounted on an externally exposed operating shaft, thus accomplishing a switching between an electrical drive and a manual drive.

REFERENCES:
patent: 3224351 (1965-12-01), Strasser
patent: 3350977 (1967-11-01), Gaus et al.
patent: 3834796 (1974-09-01), Komine

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