John Austin Moon

US Patent:

20080148852, Jun 26, 2008

Filed:

Dec 20, 2006

Appl. No.:

11/613816

Inventors:

Voldi E. Maki - Austin TX, US
John Jeffery Moon - Tulsa OK, US

International Classification:

G01N 29/22
G01N 29/34

US Classification:

73571, 73632

Abstract:

An acoustic transducer system for use in the measurement of longitudinal sound velocity in a cement sample that is maintained at high temperature and pressure. The acoustic assembly is separate from the end plugs to optimize acoustic coupling between the individual elements of the assembly, to increase the amplitude and consistency of the acoustic signal and to provide an ability to replace the transducers as a separate assembly. The transducer includes an acoustic transmission line and utilizes a pressure isolation method to optimize the material and the manufacturing process to enhance the acoustic signal required for the measurement. The transducer assembly includes a high temperature piezoelectric ceramic and a load mass that improve the signal amplitude and provide the required electrical connections. The transducer improves the ability to measure the longitudinal wave velocity in a cement sample at elevated temperature and pressure for determining the sample's compressive strength.

US Patent:

20210260346, Aug 26, 2021

Filed:

Feb 25, 2021

Appl. No.:

17/185631

Inventors:

- Atlanta GA, US
John T. Moon - Atlanta GA, US

International Classification:

A61M 25/10
A61M 39/10
A61M 1/00

Abstract:

Aspects of this disclosure relate to catheter assemblies, that include an inner tube component, an outer tube component that fits over the inner tube component, and a disposable layer of film that isolates the otherwise fluid-exposed portions of the catheter from the fluid it drains. This disposable film can be removed at regular intervals and obviates the need for catheter exchanges as the isolating disposable film, rather than the catheter itself, is removed. The principal characteristic of the disposable film is that it is relatively impermeable to fluid, for example, bodily fluids.