SURVEY CONTROL MACHINE OPTICAL INSTRUMENT PROTECTIVE ENCLOSURE COVER DRIVE Russian patent published in 2010 - IPC F41H5/26 

FIELD: instrument making.

SUBSTANCE: survey control machine optical instrument protective enclosure cover drive consists of handle, sector, lock, and transitional towing element. Drive is provided with compound lever; handle is installed on one of lever arms and another arm is connected through rod with transitional towing element made in the form of length adjustable draw bar with threaded ends. Another end of draw bar is linked through rod to lever, connected to vertical stock installed in guide and rigidly bound with cover. Sector in the form of curved groove is situated in plate alocated square with axis of handle, which contains installed with a possibility of lengthwise transition spring loaded lock that has two face coupled cylindrical surfaces with different diametres of director circles; besides in end points of curved groove there are location holes with diametre larger than groove width.

EFFECT: drive function reliability and operational properties improvement.

2 cl, 3 dwg