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US 2009/0288508 A1Published application
Leadscrew drive with annular-shell leadscrew
AssigneeRaytheon Company
InventorGabor Devenyi
Life of this patent
Estimating the term…
Abstract
A leadscrew drive has a leadscrew follower, and a leadscrew. The leadscrew is formed as an elongated annular leadscrew shell having a thread-form outer surface. The leadscrew may be fabricated by depositing a leadscrew-shell material, such as nickel, onto a mandrel having a thread-form outer surface, so that the thread-form outer surface of the mandrel is replicated in an outer surface of the leadscrew-shell material. The mandrel may be removed, to leave a hollow leadscrew shell, or left in place.
Claims15
A leadscrew drive comprising:
- a leadscrew follower;
- and
- an elongated tubular leadscrew having a helical thread-shaped outer surface, the leadscrew being formed of material having axial strength and stiffness parallel to a longitudinal axis of the leadscrew, and stability in bending perpendicular to the longitudinal axis of the leadscrew.
Dependencies are inferred from the claim text.