Optical elevation apparatus

Details Optical elevation apparatus Optical elevation apparatus

2007-03-30

2009-08-11

Schwartz, Jordan M. (Department: 2873)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Support

Reexamination Certificate

active

07572012

ABSTRACT:
A guide roller projects from the side surface of an optical system body. The optical system body is held to be elevatable within a predetermined range along an arcuate guide member. A weight balancing means incorporating a spring attaches to the lower corner on the side surface of the optical system body. A hook attaches to one end of the arcuate guide member. A pulley attaches to the upper end of the arcuate guide member. One end of a wire fixes to the hook. The spring of the gravity balancing means pulls the wire through the pulley.

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patent: 2004/0089097 (2004-05-01), Savard
patent: 7-363 (1995-01-01), None

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