Arthur R Metzger

US Patent:

42418062, Dec 30, 1980

Filed:

Oct 10, 1978

Appl. No.:

5/950189

Inventors:

Arthur C. Metzger - Wayland MA

International Classification:

E04B 182

US Classification:

181284

Abstract:

A laminated noise attenuation panel for both sound absorption and sound transmission loss having as its principal layers an expanded thermoplastic core with alternately inverted cavities, half opening to each side of said core and a sheet of cured resinous material having hollow microspheres with substantially reduced atmospheric pressure randomly dispersed in said resinous material, said cured resinous sheet facing away from the noise source. The cavities of said core panel facing away from said noise source may be filled with cellulose. The side of said core panel toward the noise source may include a laminated layer of a perforated material and a decorative layer. The side of said panel away from the noise source may also include a layer of other materials and a decorative layer. Data for the noise attenuation properties of various combinations of laminations are presented.

US Patent:

40791629, Mar 14, 1978

Filed:

Apr 9, 1976

Appl. No.:

5/675511

Inventors:

Arthur C. Metzger - Wayland MA

Assignee:

Aim Associates, Inc. - Tewksbury MA

International Classification:

E04B 199
G10K 1104
C04B 4300

US Classification:

428312

Abstract:

A structure that is preferably constructed in sheet form and that provides improved sound attenuation with a relatively small thickness. The materials comprising the structure include a myriad of hollow glass microspheres interspersed, preferably by a blending process, into a curable resin base. Improved acoustic attenuation is provided by employing microspheres of the type containing a vacuum and selecting a resin base that has good flexure qualities and is relatively soft with a relatively low indentation hardness.

US Patent:

39646947, Jun 22, 1976

Filed:

Feb 14, 1967

Appl. No.:

4/617763

Inventors:

Arthur C. Metzger - Wayland MA
William Hadden - New Providence NJ

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

F42B 1502

US Classification:

244 315

Abstract:

An acoustic destructive aerial target seeker having recognition-guidance cuitry which is adapted to detect and recognize the characteristic sound emitted from an armored vehicle and to launch and direct the system toward destructive impact with the target.