Apparatus for adjusting a mirror around two mutually perpendicul

Details Apparatus for adjusting a mirror around two mutually perpendicul Apparatus for adjusting a mirror around two mutually perpendicul

1976-10-14

1978-03-21

Henry, Jon W.

Electricity: motive power systems

Motor-reversing

Armature or primary circuit control

74501M, 74506, 318468, G02B 508, F16C 110, G05G 108

Patent

active

040800490

ABSTRACT:
An apparatus for adjusting a mirror or a similar flat planar element around two mutually perpendicular axis. The apparatus has a mounting plate for mounting the mirror thereon, the mounting plate being connected to a support by means of a universal joint. On the support is mounted a single reversible electric motor and a transmission system having two planetary gear systems, each having a sun pinion wheel and planet wheels meshing with the sun wheel, the sun wheels of the planetary gear systems being disposed coaxially with the motor shaft. An electromagnetically controlled coupling selectively couples the motor to one or the other of the two pinion sun wheels. The transmission system is connected to the mounting plate of the mirror to be adjusted by means of a single string, the string engaging the mounting plate at mutually opposed points located thereon in pairs and being laid in a loop around the pulleys of said two planetary gear systems under spring tension, and being guided by guiding means to the points on the mounting plate.

REFERENCES:
patent: RE27653 (1973-05-01), Oskam
patent: 3857631 (1974-12-01), Morgenstern et al.

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