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US 5,407,220 AGranted
Rotary trailer sway dampener
OwnerEdmond M. Fischerinventor
Life of this patent
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Abstract
A rotary trailer sway dampener for preventing a trailer from swaying back and forth during towing. The dampener is mounted on a trailer tongue and a cable connects the dampener to the towing vehicle. The cable encircles the dampener and causes the dampener to rotate whenever the trailer oscillates. The dampener utilizes a planetary gear system to spin agitators in an oil bath for creating resistance to the rotation of the dampener thus terminating the oscillations encountered by the trailer.
Claims7
A new rotary trailer sway dampener for mounting on the tongue of a trailer comprising:
- a rotatable dampening assembly mounted on said tongue;
- and
- a flexible cable, said flexible cable comprising first and second end portions and a middle section, said middle section of said cable engaging a periphery of said rotatable dampening assembly and said first and second send portions of said cable being adapted for connection to a towing vehicle,
- wherein said dampening assembly comprises a fluid dampener, and
- wherein said fluid dampener comprises an outer case and a base, said outer case being rotatably sealed to said base to allow fluid to reside inside of said outer case, and at least one agitator blade inside said outer case to agitate said fluid in response to movement of said outer case.
2 more elements
Dependencies are inferred from the claim text.