Electric actuator

Details Electric actuator Electric actuator

2005-04-19

2005-04-19

Joyce, William C. (Department: 3682)

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

C074S089330

Reexamination Certificate

active

06880417

ABSTRACT:
The rotary motion of a ball screw shaft is converted into the rectilinear motion by a ball spline nut provided integrally with displacement members by the aid of an attachment section. Involute splines are engraved on outer circumferential surfaces of spline pistons connected to the displacement members. The spline pistons are slidably meshed with a splined bore of the involute splines formed on an inner wall surface of a frame. The attachment section is displaceable in a longitudinal direction of the frame by the aid of the splined bore and the spline pistons.

REFERENCES:
patent: 2015430 (1935-09-01), Matthews et al.
patent: 2315571 (1943-04-01), Wilder
patent: 4137784 (1979-02-01), Griffin
patent: 4614128 (1986-09-01), Fickler
patent: 4936692 (1990-06-01), Tanaka
patent: 5809831 (1998-09-01), Nagai et al.

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