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US 4,060,315 AGranted
Precision mirror mount
AssigneeRockwell International Corporation
InventorTheodore A. Heinz
Life of this patent
Estimating the term…
Abstract
Positioning of a mirror mount plate is achieved by driving four differential screw actuators by geared stepping motors providing tip and tilt as well as translation. The plate on which the mirror is mounted is suspended by four specially designed flexure assemblies.
Claims4
An apparatus to suspend and remotely position, a device cantilevered from a fixed support means comprising:
- a rigid base plate portion affixed to said fixed support,
- a movable plate spaced from and positioned substantially parallel to said base plate portion,
- at least three actuation means connected between said base plate portion and said movable plate to provide tip and tilt of said movable plate as well as a means to translate said movable plate away from or towards said rigid base plate portion,
- at least one flexure means connected in compression between said rigid base plate portion and said substantially parallel movable plate to preload said at least three actuation means in tension while resisting shear forces resultant from the weight of said device cantilevered from said fixed support, said at least one flexure means is a V-shaped beam flexure where one end of a first leg of the V is affixed to said rigid base plate and the end of the second leg of said V-shaped flexure is affixed to said movable plate, the opposite ends of said first and second legs are affixed to each other, the resultant joint is suspended between said rigid base plate and said movable plate, the elastic beams of said V-shaped flexure being under compressive loads to provide rigidity and resistance to shear forces as well as maintaining said actuation means in tension, and
- means to lock said at least three actuation means thereby fixing said movable plate in a desired position.
2 more elements
Dependencies are inferred from the claim text.