Sound attenuating enclosure for compressors
1
Wedgingmembers are usedto forcefully secure the panelsto the posts.i C JR 5,259,157 43.55. Ev ACOUSTICAL DECK PANEL ASSEMBLY Robert L. Ault, assignerto Epic Metals Corporation 9 November 1993 (Class 52/144); filed 16 November 1992 This roof panel system has a lower flat portionwhich can be 3 to 5 timesas wide as the upper rib section. With an added insert, the system can be used asa formfor a composite (concrete) deck. The lowerflat portion is perforatedso that insulationbehind the perforations can provide sound absorption.--CJR 5,286,929 43.55.Ev NOVEL SOUND ABSORBING MATERIALS ShigenoriKazama et al., assigners to NissanMotor Company 15 February 1994 (Class 181/286); filed in Japan 27 December 1991 This "novel" sound absorbing material comprises a fiber gathered body (like a felt) containing at least50% (by weight)synthetic fibers. At least 30% of these fibers are irregularly shaped, thatis, their cross section is not a circle. These shapes includeconvexpolygons (suchas a triangle, rectangle, andthelike) andconcave polygons (such as Y-shape, cross-shape, star-shape cross sections andthe like). The material is to be used inside an automobile where soundabsorption, soundinsulation, and soundproofing are all required.--CJR 5,274,200 43.55.Ti SOUND ATTENUATING ENCLOSURE FOR COMPRESSORS Sathish R. Das and Dale R. Bennett, assigners to Carrier Corporation 28 December 1993 (Class 181/202); filed 22 December 1992 This is a sound attenuating enclosure that can be placed around a compressor, for example around an air conditioner./CJR 5,230,345 43.64.Vm METHOD FOR DETECTING CARPAL TUNNEL SYNDROME Thomas M. Curran and Terry J. Stefanski, Saline, MI June S. Lai, Bloomfield Hills, MI 27 July 1993 (Class 128/739); filed 30 December1991 One component of the differential diagnoses of carpal tunnel syndrome is a decrease in the vibrationthreshold of the fingers. For accurate measure- ment, the contact force between the vibratorand the digit being evaluated mustbe carefullycontrolled and the frequency of vibrationmustbe appro- priately chosen. Research hasdemonstrated that the results of suchevalua- tion are dependent on close control of these parameters. This method uses a loudspeaker driven by a 60-Hz vibration signal derived from the powerline frequency. It alsoincorporates computer control of the level of presentation. However,neither the finger contact forces nor the frequency are appropri- ately controlled.The patent statesthat the device can be inexpensively constructed./JE 5,282,475 43.66.Sr APPARATUS AND METHOD FOR AUDIOMETRY Deron Urbach and Shlomo Gilat, both of Israel 1 February 1994 (Class 128/731); filed in Israel 3 November 1991 Apparatus for the objective determination of auditorythresholds for intelligible speech is described. A sequence of speech stimuli at different levels is presented to a humansubject and the response of the subject is observed by monitoring the EEG output from electrodes placed on the fore- head and under the eye. The EEG responses are viewed on a cathode ray tube screen and interpreted by the operator./SFL 5,272,285 43.55.Ti SOUND A'R'ENUATION MACHINERY COVER T. Scott Miller, assigner to Scott Manufacturing, Incorporated 21 December 1993 (Class 181/202); filed 20 August 1992 The patent describes a sound muffling coverfor a machine suchas a compressor. The cover has an outer layer of relatively rigid, bendable, re- silientmaterialcapable of being distorted and returned to its desired shape, plus an inner layer of flexible sound absorbent material.The outerlayer is constructed of molded,closed cell polyethelene, and the inner layer is cov- eredwith spun glass fiber and/or plastic foam.--CJR 5,267,321 43.66.Ts ACTIVE SOUND ABSORBER Edwin Langberg, Medford, NJ 30 November 1993 (Class 381/72); filed 19 November 1991 The patent shows a hearing aid earphone that hasan additional wind- ing in which a signal is generated when the earphone armature vibrates. The signal generated is processed electronically to produce the effectof venting, but with the ear canal closed. This prevents acoustic feedback that could 1947 J. Acoust. Soc. Am., Vol. 96, No. 3, September 1994 Reviews of Acoustical Patents 1947 Redistribution subject to ASA license or copyright; see http://acousticalsociety.org/content/terms. Download to IP: 130.113.86.233 On: Fri, 05 Dec 2014 13:43:14
Transcript of Sound attenuating enclosure for compressors
Wedging members are used to forcefully secure the panels to the posts.i C JR
5,259,157
43.55. Ev ACOUSTICAL DECK PANEL ASSEMBLY
Robert L. Ault, assigner to Epic Metals Corporation 9 November 1993 (Class 52/144); filed 16 November 1992
This roof panel system has a lower flat portion which can be 3 to 5 times as wide as the upper rib section. With an added insert, the system can be used as a form for a composite (concrete) deck. The lower flat portion is
perforated so that insulation behind the perforations can provide sound absorption.--CJR
5,286,929
43.55.Ev NOVEL SOUND ABSORBING MATERIALS
Shigenori Kazama et al., assigners to Nissan Motor Company 15 February 1994 (Class 181/286); filed in Japan 27 December
1991
This "novel" sound absorbing material comprises a fiber gathered body (like a felt) containing at least 50% (by weight) synthetic fibers. At least 30% of these fibers are irregularly shaped, that is, their cross section is not a circle. These shapes include convex polygons (such as a triangle, rectangle, and the like) and concave polygons (such as Y-shape, cross-shape, star-shape cross sections and the like). The material is to be used inside an automobile where sound absorption, sound insulation, and soundproofing are all required.--CJR
5,274,200
43.55.Ti SOUND ATTENUATING ENCLOSURE FOR
COMPRESSORS
Sathish R. Das and Dale R. Bennett, assigners to Carrier Corporation
28 December 1993 (Class 181/202); filed 22 December 1992
This is a sound attenuating enclosure that can be placed around a compressor, for example around an air conditioner./CJR
5,230,345
43.64.Vm METHOD FOR DETECTING CARPAL
TUNNEL SYNDROME
Thomas M. Curran and Terry J. Stefanski, Saline, MI June S. Lai, Bloomfield Hills, MI
27 July 1993 (Class 128/739); filed 30 December 1991
One component of the differential diagnoses of carpal tunnel syndrome is a decrease in the vibration threshold of the fingers. For accurate measure- ment, the contact force between the vibrator and the digit being evaluated must be carefully controlled and the frequency of vibration must be appro- priately chosen. Research has demonstrated that the results of such evalua- tion are dependent on close control of these parameters. This method uses a loudspeaker driven by a 60-Hz vibration signal derived from the power line frequency. It also incorporates computer control of the level of presentation. However, neither the finger contact forces nor the frequency are appropri- ately controlled. The patent states that the device can be inexpensively constructed./JE
5,282,475
43.66.Sr APPARATUS AND METHOD FOR
AUDIOMETRY
Deron Urbach and Shlomo Gilat, both of Israel 1 February 1994 (Class 128/731); filed in Israel 3 November 1991
Apparatus for the objective determination of auditory thresholds for intelligible speech is described. A sequence of speech stimuli at different levels is presented to a human subject and the response of the subject is observed by monitoring the EEG output from electrodes placed on the fore- head and under the eye. The EEG responses are viewed on a cathode ray tube screen and interpreted by the operator./SFL
5,272,285
43.55.Ti SOUND A'R'ENUATION MACHINERY
COVER
T. Scott Miller, assigner to Scott Manufacturing, Incorporated 21 December 1993 (Class 181/202); filed 20 August 1992
The patent describes a sound muffling cover for a machine such as a compressor. The cover has an outer layer of relatively rigid, bendable, re- silient material capable of being distorted and returned to its desired shape, plus an inner layer of flexible sound absorbent material. The outer layer is constructed of molded, closed cell polyethelene, and the inner layer is cov- ered with spun glass fiber and/or plastic foam.--CJR
5,267,321
43.66.Ts ACTIVE SOUND ABSORBER
Edwin Langberg, Medford, NJ 30 November 1993 (Class 381/72); filed 19 November 1991
The patent shows a hearing aid earphone that has an additional wind- ing in which a signal is generated when the earphone armature vibrates. The signal generated is processed electronically to produce the effect of venting, but with the ear canal closed. This prevents acoustic feedback that could
1947 J. Acoust. Soc. Am., Vol. 96, No. 3, September 1994 Reviews of Acoustical Patents 1947
Redistribution subject to ASA license or copyright; see http://acousticalsociety.org/content/terms. Download to IP: 130.113.86.233 On: Fri, 05 Dec 2014 13:43:14
