Patent ID: 11867310
Assignee: FISHER CONTROLS INTERNATIONAL LLC
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A valve for controlling a flow characteristic therethrough, the valve comprising:
a first plate at a first longitudinal position of the valve, the first plate having a first aperture pattern, the first aperture pattern including a spiral pattern such that apertures thereof increase in diameter along a radial direction of the first plate, wherein a quantity of the apertures increases along the radial direction;
a second plate at a second longitudinal position of the valve different from the first longitudinal position, the second plate having a second aperture pattern; and
a rotator to rotate the first plate or the second plate relative to the other of the first plate or the second plate to vary a degree of alignment between the first and second aperture patterns.