Patent ID: 8613431
Filing Date: 2013-12-24
Classification: F16F

Abstract:
1. A vibration isolator comprising: a first mounting member; a second mounting member; at least one isolator member having a winding path, the isolator member engageable with the first mounting member and the second mounting member, the isolator member having spring rates including a compression spring rate, a roll spring rate, and a shear spring rate, the isolator member further comprising at least one primary structure and at least one secondary structure positioned along the winding path; the at least one secondary structure being separated from the first mounting member and the second mounting member; the at least one primary structure and the at least one secondary structure are in series between the first mounting member and the second mounting member; the at least one secondary structure being positioned entirely outside of a centerline established between a longitudinal axis of the first mounting member and a longitudinal axis of the second mounting member; the at least one secondary structure providing increased symmetry between at least two of the spring rates of the isolator member when compared to corresponding spring rates of an isolator member without at least one secondary structure; wherein the at least one primary structure is at least one first loop, the at least one secondary structure is at least one second loop, and both of the at least one first loop and the at least one second loop wind in a same direction.