US 12,460,697 B2
Passive motion isolation system
Shifu Yuan, Goleta, CA (US); Norm Gardner, Goleta, CA (US); Ernest M. Leos, Goleta, CA (US); Augie Ramirez, Goleta, CA (US); Nan Luo, Goleta, CA (US); Sajanish Balagopal, Goleta, CA (US); and Mike Hopkins, Oxnard, CA (US)
Assigned to Calient.AI Inc., Goleta, CA (US)
Filed by Calient.AI Inc., Goleta, CA (US)
Filed on Jul. 28, 2023, as Appl. No. 18/360,874.
Application 18/360,874 is a continuation of application No. 16/803,053, filed on Feb. 27, 2020, granted, now 11,815,153.
Claims priority of provisional application 62/815,743, filed on Mar. 8, 2019.
Prior Publication US 2023/0366446 A1, Nov. 16, 2023
Int. Cl. F16F 15/08 (2006.01); F16M 11/04 (2006.01); F16M 11/20 (2006.01); F16F 3/087 (2006.01)
CPC F16F 15/08 (2013.01) [F16M 11/046 (2013.01); F16M 11/2085 (2013.01); F16M 11/2092 (2013.01); F16F 3/0876 (2013.01); F16M 2200/047 (2013.01); F16M 2200/08 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A motion isolation system for motion-sensitive equipment, comprising:
a base subject to ambient motions;
a three-axis free motion platform mounted on the base, the three-axis free motion platform coupled with the motion-sensitive equipment, the three-axis free motion platform comprising:
a first axis carriage free to move along a first axis rail,
a second axis carriage free to move along a second axis rail,
a third axis carriage free to move along a third axis rail, each of the first axis rail, the second axis rail, and the third axis rail having a finite length between respective ends; and
a vibration isolation subsystem counterbalanced in an upward direction by two constant force springs positioned on opposite sides of the third axis rail, the vibration isolation subsystem comprising:
a support plate attached to the third axis carriage;
four elongate resilient pillars, each elongate resilient pillar having a first end affixed to the support plate, a length extending from the support plate parallel to a vertical axis, and a second end; and
a mounting bracket to couple the motion-sensitive equipment to the second ends of the four elongate resilient pillars,
wherein the two constant force springs are non-overlapping with the third axis rail in the upward direction,
wherein the two constant force springs are overlapping with the support plate in a horizontal direction, and
wherein the three-axis free motion platform is coupled with the motion-sensitive equipment via the vibration isolation subsystem.