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Brant J Callahan

from Nevada City, CA
Age ~60
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Also known as:
Brent J Callahan, Brant Callahon, James Callahan Brant
Related to:
Edward Callahan Neal, 57Neal E Callahan, 57Karen I Callahan, 80William E Callahan, 91William T Callahan, 69Rose A Callahan, 51
Connected to:
Abigail M Callahan, 42Alexis F Callahan, 40Amparo Callaham, 75Bennie L Callaham, 77Betty Callahan, 47Brenda L Callahan, 64Brent A Callahan, 49Caitlin Callahan, 58Cari B Callahan, 31Carrie K Callahan, 45

Brant Callahan Phones & Addresses

  • Nevada City, CA
  • 13896 Jessie Ln, Grass Valley, CA 95945 (530) 272-5532
  • 327 Race St, Grass Valley, CA 95945 (530) 271-0723
  • San Francisco, CA

Publications

Us Patents

Acoustic Driver Assembly With Restricted Contact Area

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US Patent:
20060043834, Mar 2, 2006
Filed:
May 6, 2005
Appl. No.:
11/123441
Inventors:
Ross Tessien - Nevada City CA, US
Daniel Phillips - Grass Valley CA, US
Brant Callahan - Nevada City CA, US
Assignee:
Impulse Devices Inc. - Grass Valley CA
International Classification:
H02N 2/00
US Classification:
310323120
Abstract:
An acoustic driver assembly for use with any of a variety of cavitation chamber configurations, including spherical and cylindrical chambers as well as chambers that include at least one flat coupling surface. The acoustic driver assembly includes at least one transducer, a head mass and a tail mass. The end surface of the head mass is shaped to limit the contact area between the head mass of the driver assembly and the cavitation chamber to which the driver is attached, the contact area being limited to a centrally located contact region. The area of contact is controlled by limiting its size and/or shaping its surface.

Acoustic Driver Assembly With Restricted Contact Area

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US Patent:
20060043835, Mar 2, 2006
Filed:
May 6, 2005
Appl. No.:
11/123482
Inventors:
Ross Tessien - Nevada City CA, US
Daniel Phillips - Grass Valley CA, US
Brant Callahan - Nevada City CA, US
Assignee:
Impulse Devices Inc. - Grass Valley CA
International Classification:
H02N 2/00
US Classification:
310323120
Abstract:
An acoustic driver assembly for use with any of a variety of cavitation chamber configurations, including spherical and cylindrical chambers as well as chambers that include at least one flat coupling surface. The acoustic driver assembly includes at least one transducer, a head mass and a tail mass. The end surface of the head mass is shaped to limit the contact area between the head mass of the driver assembly and the cavitation chamber to which the driver is attached, the contact area being limited to a centrally located contact region. The area of contact is controlled by limiting its size and/or shaping its surface.

Acoustic Driver Assembly With Restricted Contact Area

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US Patent:
20060043840, Mar 2, 2006
Filed:
May 6, 2005
Appl. No.:
11/123709
Inventors:
Ross Tessien - Nevada City CA, US
Daniel Phillips - Grass Valley CA, US
Brant Callahan - Nevada City CA, US
Assignee:
Impulse Devices Inc. - Grass Valley CA
International Classification:
H01L 41/08
US Classification:
310328000
Abstract:
An acoustic driver assembly for use with any of a variety of cavitation chamber configurations, including spherical and cylindrical chambers as well as chambers that include at least one flat coupling surface. The acoustic driver assembly includes at least one transducer, a head mass and a tail mass. The end surface of the head mass is shaped to limit the contact area between the head mass of the driver assembly and the cavitation chamber to which the driver is attached, the contact area being limited to a centrally located contact region. The area of contact is controlled by limiting its size and/or shaping its surface.

Acoustic Driver Assembly With Increased Head Mass Displacement Amplitude

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US Patent:
20070103034, May 10, 2007
Filed:
Nov 4, 2005
Appl. No.:
11/267527
Inventors:
Daniel Phillips - Grass Valley CA, US
Brant Callahan - Grass Valley CA, US
Assignee:
Impulse Devices Inc. - Grass Valley CA
International Classification:
H01L 41/08
US Classification:
310328000
Abstract:
An acoustic driver horn that is integral to a wall of a cavitation chamber is provided. The horn design is applicable to any of a variety of cavitation chamber configurations, including spherical, cylindrical, and rectangular chambers. Although a variety of driver assemblies can be coupled to the driver horn, preferably the acoustic driver assembly includes a head mass, a tail mass, and at least one transducer, typically a piezoelectric transducer, and preferably a pair of piezoelectric transducers. A groove in the cavitation chamber wall defines the driver horn and separates it from the remaining portion of the cavitation chamber wall. Due to the thinning of the wall around the horn, the driver that is attached to the horn is able to more effectively couple its energy into the cavitation fluid within the chamber.

Method And Apparatus For Electrodeposition In Metal Acoustic Resonators

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US Patent:
20100200417, Aug 12, 2010
Filed:
Feb 4, 2010
Appl. No.:
12/700702
Inventors:
Brant James CALLAHAN - Grass Valley CA, US
Dario Felipe Gaitan - Nevada City CA, US
Corey Scott - Grass Valley CA, US
Assignee:
Impulse Devices, Inc. - Grass Valley CA
International Classification:
C25D 5/34
US Classification:
205210, 205205
Abstract:
Methods and systems for electrodeposition of Indium, Gallium, or other metals within a metal acoustic resonator chamber are provided, including for electrodeposition of Indium or Gallium as a strike layer on an interior surface of a cavitation chamber. The resultant strike layer affords an accommodating wetting surface for subsequent filling with a liquid metal and performing cavitation therein. In some embodiments, this allows for the use of liquid metal in an acoustic resonator without the damping effects inherent with oxide boundaries or other defects.
Control profile
Brant J Callahan from Nevada City, CA, age ~60 Get Report