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US 6,603,229 B1Granted
Linear actuator with threaded captivation sleeve, captive lead screw, and spring pre-load adjustment
AssigneeTri-Tech, Inc.
InventorThomas A. Toye, IV
Life of this patent
Estimating the term…
Abstract
In a preferred embodiment, a linear actuator, including: front and rear end bells; a stator structure; a rotor structure having first and second bearings journaled, respectively, in cavities formed in inner surfaces of the front and rear end bells; a captivation sleeve having its proximal end threadedly inserted in a cavity formed in an outer surface of the front end bell; and all foregoing elements being coaxially aligned to permit the insertion therethrough of a lead screw.
Claims10
A linear actuator, comprising:
- (a) front and rear end bells;
- (b) a stator structure;
- (c) a rotor structure having first and second bearings journaled, respectively, in cavities formed in inner surfaces of said front and rear end bells;
- (d) a captivation sleeve having its proximal end threadedly inserted in a cavity formed in an outer surface of said front end bell;
- (e) all foregoing elements being coaxially aligned to permit the insertion therethrough of a lead screw inserted through coaxially aligned foregoing elements, said lead screw having a threaded portion extending through said rotor structure and a splined portion extending through said captivation sleeve;
- and
- (f) a cylindrical anti-rotation bearing fixedly inserted in a distal end of said captivation sleeve, said anti-rotation bearing having an opening coaxial with said foregoing elements.
4 more elements
A linear actuator, comprising:
- (a) front and rear end bells;
- (b) a stator structure;
- (c) a rotor structure having first and second bearings journaled, respectively, in cavities formed in inner surfaces of said front and rear end bells;
- (d) a captivation sleeve having its proximal end threadedly inserted in a cavity formed in an outer surface of said front end bell;
- (e) a lead screw inserted through coaxially aligned foregoing elements, said lead screw having a threaded portion extending through said rotor structure and a splined portion extending through said captivation sleeve;
- and
- (f) a cylindrical anti-rotation bearing fixedly inserted in a distal end of said captivation sleeve, said anti-rotation bearing having an opening coaxial with said foregoing elements.
4 more elements
Dependencies are inferred from the claim text.