John T Umina

US Patent:

7247979, Jul 24, 2007

Filed:

Nov 7, 2005

Appl. No.:

11/269038

Inventors:

John A. Umina - Waltham MA, US

Assignee:

GE Security, Inc. - Austin TX

International Classification:

H01L 41/053

US Classification:

310348, 310311, 738665

Abstract:

A holder for a transducer having a mounting portion, a coupler, and a clamping portion is disclosed. The mounting portion has a through hole with a conical seat disposed therein, with at least a portion of the through hole being configured to receive the transducer. The coupler is secured to the transducer and has a first interface surface configured to sit on the conical seat, and a second interface surface disposed on an opposite side to that of the first interface surface. The clamping portion has a through hole and a clamping surface, at least a portion of the through hole is configured to receive the transducer, and the clamping surface is configured to press against the second interface surface of the coupler. The clamping portion and mounting portion are configured to securely capture the coupler therebetween, thereby securely positioning the transducer relative to the mounting portion.

US Patent:

7523676, Apr 28, 2009

Filed:

Dec 7, 2006

Appl. No.:

11/567818

Inventors:

Xue-Song Scott Li - Lexington MA, US
John Albert Umina - Waltham MA, US
Xiaolei Shirley Ao - Lexington MA, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G01F 1/66

US Classification:

7386125, 702 54

Abstract:

A method of determining the flow rate of a fluid in a conduit. Ultrasonic energy is directed through the conduit along multiple paths. The ultrasonic energy is detected and measured using a range gated Doppler technique to determine the velocity of the fluid at several points in the conduit. These point velocities are used to calculate the average flow rate of the fluid in the conduit.

US Patent:

7581453, Sep 1, 2009

Filed:

Dec 29, 2006

Appl. No.:

11/617817

Inventors:

Xiaolei Shirley Ao - Lexington MA, US
John Albert Umina - Waltham MA, US
Edward R. Furlong - Beverly MA, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G01F 1/66

US Classification:

7386127

Abstract:

An ultrasonic flow meter system includes transducers arranged with respect to a conduit to define at least one chordal path through fluid flowing in the conduit, and at least one transmitting transducer and receiving transducer pair on the chordal path for generating a transit time signal. At least one receiving transducer is positioned to receive scattered energy to generate a range gated Doppler signal. The system further includes a processing subsystem for exciting the at least one transmitting transducer. The processing subsystem is responsive to the transit time signal and the range gated Doppler signal and configured to generate a velocity profile and a mean velocity of the fluid in the conduit.

US Patent:

8511424, Aug 20, 2013

Filed:

Dec 8, 2011

Appl. No.:

13/314963

Inventors:

Xiaolei Shirley Ao - Lexington MA, US
Jin Chang Xu - Andover MA, US
John Albert Umina - Waltham MA, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G10K 11/00

US Classification:

181196

Abstract:

Acoustic waveguides are disclosed for mounting to a conduit. The acoustic waveguides provide a mounting area that minimizes the effect of the mount on the acoustic wave traveling through the waveguide while providing an effective seal, even under high pressure conditions.

US Patent:

20120003900, Jan 5, 2012

Filed:

Jul 1, 2010

Appl. No.:

12/828416

Inventors:

David A. Hudson - Stoughton MA, US
Craig Karl Wallace - Braintree MA, US
Michael McLaughlin - Stoughton MA, US
John A. Umina - Waltham MA, US
John D. Andrews - Boxborough MA, US
Richard D. Regan - Framingham MA, US

Assignee:

ARTISAN INDUSTRIES INC. - Waltham MA

International Classification:

B24B 51/00
B24B 15/04

US Classification:

451 5, 451252

Abstract:

A rotary grinding system includes a support frame and a grinding assembly coupled to the support frame for longitudinal movement, with respect to a workpiece attached to the support frame. A radial arm is suspended below the grinding assembly and rotated in a plane parallel to the workpiece. A grinding wheel traverses the radial arm, thereby working a circular, annular or sector portion of the workpiece. The height, and therefore the depth of cut, of the grinding wheel may be precisely adjusted via a single point adjustment screw or the like. Optionally, the grinding system may be controlled by a computer numeric controller (CNC) to automatically refinish programmed portions or all of the workpiece. Eccentric pins extending from the support frame and into the workpiece may be used to adjust the lateral position of the support frame, relative to the workpiece. Support members may be used to offload the weight of at least a portion of the grinding assembly, thereby relieving bearings of this weight, such as during shipment or storage of the system.

US Patent:

20130329930, Dec 12, 2013

Filed:

Aug 19, 2013

Appl. No.:

13/970136

Inventors:

Jin Chang Xu - Andover MA, US
John Albert Umina - Waltham MA, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G10K 11/00

US Classification:

381338, 181196

Abstract:

Acoustic waveguides are disclosed for mounting to a conduit. The acoustic waveguides provide a mounting area that minimizes the effect of the mount on the acoustic wave traveling through the waveguide while providing an effective seal, even under high pressure conditions.

US Patent:

55775543, Nov 26, 1996

Filed:

Jul 7, 1994

Appl. No.:

8/271783

Inventors:

John T. Umina - Concord MA

International Classification:

F24D 314

US Classification:

165 53

Abstract:

A radiant heating system uses a conductive heat shield comprising a flat portion designed to be placed in contact with the underside of a floor and an elongated tube holding portion extending from the opposite side of the heat shield. Preferably the tube holding portion has an elongated opening for receiving tubing after the floor-contacting portion has been placed in contact with the underside of a floor, and has resilient restraining portions to hold the tubing in place once it has been inserted into that opening. It is also preferred that the tube holding portion be at least three quarters of an inch below the underside of any floor to which the flat portion is attached or is covered with a puncture-proof nail guard, so tubing in the tube holding portion will not be punctured by nails driven into the floor to which the heat shield is attached. It is preferred that the tube holding portion have a generally circular cross section which will conform to the surface of the tubing it holds, and, thus, will efficiently conduct heat from that tubing. In many embodiments the heat shield will have two such elongated tube holding portions, and will be formed from a sheet of conductive metal, such as aluminum.