WIRELESS FLOW RESTRICTOR OF A FLOWMETER
First Claim
Patent Images
1. A wireless flow restrictor comprising:
- an elongated tapered cylindrical body having a first end and a second end, wherein the first end has a larger diameter than the second end;
a first set of protrusions located on the first end of the elongated tapered cylindrical body;
a second set of protrusions located on the second end of the elongated tapered cylindrical body; and
wherein the first set of protrusions, the second set of protrusions, and the elongated tapered cylindrical body are machined as a single part.
1 Assignment
0 Petitions
Accused Products
Abstract
The disclosed embodiments include a wireless restrictor that may be used as a laminar flow element in a flow meter or a mass flow controller. Embodiments of the wireless restrictor include a single machined part that contains both the features of a tapered restrictor and crushable positioning protrusions.
-
Citations
20 Claims
-
1. A wireless flow restrictor comprising:
-
an elongated tapered cylindrical body having a first end and a second end, wherein the first end has a larger diameter than the second end; a first set of protrusions located on the first end of the elongated tapered cylindrical body; a second set of protrusions located on the second end of the elongated tapered cylindrical body; and wherein the first set of protrusions, the second set of protrusions, and the elongated tapered cylindrical body are machined as a single part. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A mass flow controller comprising:
-
a laminar flow element, wherein the laminar flow element is a wireless restrictor; at least one pressure sensing element configured to determine a differential pressure of a fluid flow between an upstream pressure and a downstream pressure of the laminar flow element; a processing element configured to use at least the differential pressure, knowledge of fluid properties, and characteristics of the laminar flow element to determine a mass flow rate; and a proportional control valve configured to control the fluid flow through the laminar flow element in response to a valve drive signal. - View Dependent Claims (11, 13, 14, 15, 16)
-
-
12. A mass flow meter comprising:
-
a laminar flow element, wherein the laminar flow element is a wireless restrictor; at least one pressure sensing element configured to determine a differential pressure of a fluid flow between an upstream pressure and a downstream pressure of the laminar flow element; and a processing element configured to use at least the differential pressure, knowledge of fluid properties, and characteristics of the laminar flow element to determine a mass flow rate. - View Dependent Claims (17, 18, 19, 20)
-
Specification