4,671,841

43.50.Gf METHOD OF MAKING AN ACOUSTIC PANEL WITH A TRIAXIAL OPEN-WEAVE FACE SHEET

Gerald E. Stephens, assignor to Rohr Industries, Incorporated 9 June 1987 (Class 156/292); filed 6 January 1986

Here is a method of producing an open, triaxial woven, acoustic face sheet useful in sound absorbing panels for aircraft engines or the like.--CJR

4,671,979

43.50.Gf INSULATING STRUCTURE

Joseph G. Adiletta, assignor to Pall Corporation 9 June 1987 (Class 428/74); filed 30 September 1985

This insulating structure comprises layers of high-density, thermal/ acoustical bonded fibers in a chemically resistant impermeable envelope that has sealed mounting flanges for use in insulating structures under ex- treme conditions of heat and noise; the structure is designed for use in nuclear, biological, or chemical warfare.--CJR

4,665,647

43.50.Gf PLANT BEARING NOISE ABATEMENT

WALL

Wolfgang Behrens and Bernd Krupka, Federal Republic of Germany 19 May 1987 (Class 47/33); filed in the Federal Republic of Germany

26 January 1984

This wall has a self-supporting stable substrate that supports plant

4,681,096

43.50.Qp METHOD AND APPARATUS FOR THERAPEUTIC MOTION AND SOUND TREATMENT

OF INFANTS

Armando A. Cuervo, Westerville, OH 21 July 1987 (Class 128/33); filed 4 April 1986

This apparatus for pacifying crying infants combines a shaker attached to the springs of the infant's bed, with a small loudspeaker mounted on the side of the bed. The shaker imparts a rhythmic, cyclic motion to the bed in a manner well known to induce infant soothing. A steady tone having a sound level in the range of 70-80 dB and a frequency between 200 and 4000 Hz accompanies the rocking action for additional soothing effect. The reviewer would have had doubts concerning the acoustical part of this system, had he not observed the quieting of crying infants in a hospital ward by doctors humming a steady tone near the ear of crying babies. It worked.mDWM

4,672,851

43.55.Dt ACOUSTIC EVALUATION OF THERMAL

INSULATION

Gerald V. Blessing and Daniel R. Flynn, assignors to the United States of America

16 June 1987 (Class 73/597); filed 30 May 1986

The patent describes an acoustical method for measuring the quantity and density of thermal insulation. To do so, one introduces a sensing appa- ratus comprised of one or two acoustic transducers that are so placed as to

I I

18--I 11, 20- t i

growth, resists rats, is not impeded by thawing salt mist, and blocks sound.--CJR

TOP,?URFAC[-• ..... (INSU. LA, TION LAYER

CEILIN 13

4,674,593

43.50.Gf SOUND BARRIER FENCE

Danny W. McCarty, Broken Arrow, OK 23 June 1987 (Class 181/210); filed 2 April 1985

This is a sound barrier fence adapted to reduce the noise level in a yard that is adjacent to a freeway, for example. The fence includes two upright panels of concrete, 3-4 in. apart; the space between the panels is filled with a foam insulation material. Posts are provided to hold the upright members in place, and rail caps and post caps are provided to keep water out of the interior of the fence.--CJR

measure the attenuation and/or phase shift of acoustic waves passing through the insulation. This method may be applied to material in an en- closed space, for example, an attic, or in an open space.•CJR

4,473,905

43.70.Aj ARTIFICIAL LARYNX

Philip Katz et al., assignors to Thomas Jefferson University 25 September 1984 (Class 381/70); filed 30 March 1981

A completely self-contained artificial larynx is described in the form of a thin artificial palate plate containing a pulse generator, tongue switch, amplifier, loudspeaker, and horn. The pulse output is inhibited by holding

404 J. Acoust. Soc. Am. 83(1), Jan. 1988; 0001-4966/88/01404-02500.80; @ 1988 Acoust. Soc. Am.; Patent Reviews 404

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