Patent ID: 9664251
Date: 2017-05-30
CPC Classifications: F01L,F02B,F02M,F16D,F16F,F16H

Claim:
1. A coupler for translating a rotational force, comprising: a first rotational element defining a first pocket; a second rotational element in axial alignment with the first rotational element and defining a second pocket facing the first pocket, the first pocket and the second pocket define a dampening chamber therebetween that varies in volume based on an overlap thereof; a fluid positioned in the dampening chamber, a portion of the fluid being dispelled from the dampening chamber when the first rotational element rotates relative to the second rotational element and decreases the volume of the dampening chamber; and a dampener positioned in the dampening chamber, the dampener comprising: the first rotational element comprises a first supply passage positioned fluidly upstream of the dampening chamber, an inlet of the first supply passage is positioned at an inner circumferential surface of the first rotational element, and an outlet of the first supply passage is positioned at an outer circumferential surface of a hub of the first rotational element; and the first rotational element and the second rotational element define a second supply passage positioned fluidly downstream of the first supply passage, an inlet of the second supply passage is positioned at an inner circumferential surface of the second rotational element, and an outlet of the second supply passage opens into the axial aperture.