Rotational-to-linear coaxial mechanical drive
AssigneeRaytheon Company
InventorGabor Devenyi
Life of this patent
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Abstract
A linear mechanical drive has an outer housing, a drive sleeve that is conformably and slidably received within the outer housing, a mount sleeve conformably and slidably received within the drive sleeve, and a guide extending between the outer housing and the mount sleeve to prevent the mount sleeve from rotating relative to the outer housing. A linearly driven structure is affixed to the mount sleeve. There is a first helical engagement between the outer housing and the drive sleeve, and a second helical engagement between the mount sleeve and the drive sleeve. A motor is positioned to actuate the drive sleeve engagement.
Claims16
A linear mechanical drive comprising:
- an outer housing having a right circular cylindrical internal surface and a cylindrical axis;
- a drive sleeve having
- a right circular cylindrical external surface conformably and slidably received within the right circular cylindrical internal surface of the outer housing,
- a right circular cylindrical internal surface, and
- a drive sleeve engagement;
- a mount sleeve having
- a right circular cylindrical external surface conformably and slidably received within the right circular cylindrical internal surface of the drive sleeve;
- a guide extending between the outer housing and the mount sleeve to prevent the mount sleeve from rotating relative to the outer housing;
- a first helical engagement between the outer housing and the drive sleeve;
- and
- a second helical engagement between the mount sleeve and the drive sleeve.
A linear mechanical drive comprising:
- an outer housing having a right circular cylindrical internal surface;
- a lens drive sleeve having
- a right circular cylindrical external surface conformably and slidably received within the right circular cylindrical internal surface of the outer housing,
- a right circular cylindrical internal surface, and
- a rotational drive sleeve engagement;
- a lens mount sleeve having
- a right circular cylindrical external surface conformably and slidably received within the right circular cylindrical internal surface of the lens drive sleeve, and
- a lens mounted to the lens mount sleeve;
- a guide extending between the outer housing and the lens mount sleeve to prevent the lens mount sleeve from rotating relative to the outer housing;
- a first spring ring helical engagement between the outer housing and the lens drive sleeve;
- and
- a second spring ring helical engagement between the lens mount sleeve and the lens drive sleeve.
Dependencies are inferred from the claim text.