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US 6,145,395 AGranted
Side load compensated linear actuator
AssigneeE-Drive Design, Inc.
InventorsRichard G. Swanson, James W. Haury, Todd C. Pannone
Life of this patent
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Abstract
An internal side load compensation device for use with a linear actuator comprises at least one cam beam affixed to the actuator housing pre-loaded to a known side load to influence at least one cam roller affixed to the primary driver of the linear actuator. The cam beam is pre-loaded by adjusting pre-load bars extending within the actuator housing.
Claims19
A linear actuator comprising:
- a motive power source;
- an elongated housing having one end portion adjacent the power source and an opposite end portion remote therefrom;
- a driver disposed within the housing and driven by the power source for axial movement in one and an opposite direction within the housing;
- an actuating member telescopically received within the housing and connected with and driven by the driver for external extension from the opposite end portion of the housing in varying degree;
- and
- an internal side load compensation device, comprising:
- at least one cam beam affixed to the housing approximately parallel to the axial movement direction of the driver;
- and
- at least one cam roller affixed to the driver wherein the cam roller engages with the cam beam to effect compensation for side load.
6 more elements
An internal load compensation device, comprising:
- at least one cam beam affixed to the interior of a linear actuator housing containing a driver mechanism, wherein said cam beam is approximately parallel to the axial movement direction of the linear actuator's driver mechanism;
- at least one cam roller affixed to the driver mechanism wherein the cam roller engages with the cam beam to effect compensation for side load;
- and
- at least one pre-load bar extending within the housing of the linear actuator essentially perpendicular to the cam beam and the axial movement direction of the driver mechanism for effecting a pre-load on the cam beam.
1 more element
Dependencies are inferred from the claim text.