[go: up one dir, main page]

FR1460685A - Low-reflection broadband sound absorption body for sounds transmitted in liquid or solid media, and method of making the body - Google Patents

Low-reflection broadband sound absorption body for sounds transmitted in liquid or solid media, and method of making the body

Info

Publication number
FR1460685A
FR1460685A FR32019A FR32019A FR1460685A FR 1460685 A FR1460685 A FR 1460685A FR 32019 A FR32019 A FR 32019A FR 32019 A FR32019 A FR 32019A FR 1460685 A FR1460685 A FR 1460685A
Authority
FR
France
Prior art keywords
making
liquid
low
sound absorption
solid media
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR32019A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WIEDERHOLD FA HERMANN
Original Assignee
WIEDERHOLD FA HERMANN
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DEM62506A external-priority patent/DE1224055B/en
Application filed by WIEDERHOLD FA HERMANN filed Critical WIEDERHOLD FA HERMANN
Priority to FR32019A priority Critical patent/FR1460685A/en
Application granted granted Critical
Publication of FR1460685A publication Critical patent/FR1460685A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G10K11/165—Particles in a matrix
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6666—Compounds of group C08G18/48 or C08G18/52
    • C08G18/6696—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/36 or hydroxylated esters of higher fatty acids of C08G18/38
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
    • E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/02—Energy absorbers; Noise absorbers
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/002—Devices for damping, suppressing, obstructing or conducting sound in acoustic devices
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2350/00—Acoustic or vibration damping material

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Architecture (AREA)
  • Multimedia (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
FR32019A 1964-09-21 1965-09-20 Low-reflection broadband sound absorption body for sounds transmitted in liquid or solid media, and method of making the body Expired FR1460685A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR32019A FR1460685A (en) 1964-09-21 1965-09-20 Low-reflection broadband sound absorption body for sounds transmitted in liquid or solid media, and method of making the body

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEM62506A DE1224055B (en) 1964-09-21 1964-09-21 Broadband anechoic sound absorber for liquid and solid-state sound made of plastic with transformed sound velocity and process for its production
FR32019A FR1460685A (en) 1964-09-21 1965-09-20 Low-reflection broadband sound absorption body for sounds transmitted in liquid or solid media, and method of making the body

Publications (1)

Publication Number Publication Date
FR1460685A true FR1460685A (en) 1966-01-07

Family

ID=25987602

Family Applications (1)

Application Number Title Priority Date Filing Date
FR32019A Expired FR1460685A (en) 1964-09-21 1965-09-20 Low-reflection broadband sound absorption body for sounds transmitted in liquid or solid media, and method of making the body

Country Status (1)

Country Link
FR (1) FR1460685A (en)

Similar Documents

Publication Publication Date Title
IT1147559B (en) IMPROVEMENT IN ULTRASONIC TRANSDUCERS IN PARTICULAR FOR THE VAPORIZATION OF THE FUEL IN
CA918445A (en) Apparatus for measuring the flow volume of gases and liquids
FR2043035A5 (en) PROCEDURE FOR THE TEST AND TEST OF BILIRUBIN
IT8025113A0 (en) PROCEDURE AND DEVICE FOR THE ENRICHMENT OF LIQUIDS WITH GAS.
FR1503585A (en) Methods and apparatus for continuously recording the concentration of fiber suspension
FR1580060A (en)
FR1078851A (en) Channel with sound absorbing walls for the passage of gas currents
FR88275E (en) Low reflection wideband sound absorption body for sounds transmitted in liquids and solids
FR1460685A (en) Low-reflection broadband sound absorption body for sounds transmitted in liquid or solid media, and method of making the body
CH522164A (en) Coupling of pipes or tubes with "V" flanges
IT984399B (en) PROCEDURE FOR OBTAINING CARBON PRODUCTS IN THE FORM OF FIBERS, FILMS AND SIMILAR
DK146584C (en) PROCEDURES FOR COOL EXTRUSION OF BLOOD METAL TOPICS FOR OPEN CONIC TUBES AND PRESSEDORN TO USE IN EXERCISE OF THE PROCEDURE
FR69697E (en) Improvements to installations and arrangements relating to the distribution of liquids of a given quality, and in particular to the distribution of sterile water
FR1494967A (en) Electroacoustic process for the absorption of disturbing sounds and noises in large areas
FR1424611A (en) Method and apparatus for checking the wall thickness of hollow articles
CH520531A (en) Apparatus for treating material in the form of fibers with a liquid
BE763710A (en) MIXTURE OF ELASTOMERIC SUBSTANCES FOR THE IMPREGNATION OF FIBROUS, FLEXIBLE AND FLAT ARTICLES, AS WELL AS FOR THE COATING OF THESE ARTICLES
IT7883303A0 (en) DEVICE FOR EXPULSING AIR OUT OF THE LIQUID PIPES, PARTICULARLY OUTSIDE THE BURNER HEADS.
FR1195178A (en) Volume regulator for the flow of a gaseous medium
FR470886A (en) Methods and apparatus for the absorption or introduction of food, drug or the like solutions
FR1134464A (en) Design of the axis of rotation for pivoting and tilting windows made of special steel profiles
FR1423473A (en) Low reflection wideband sound absorption body for sounds transmitted in liquids and solids
IT7983345A0 (en) PROCEDURE FOR THE IMPREGNATION OF CORK WITH LIQUID AND/OR FLUID SUBSTANCES OR TAKEN TO THE LIQUID STATE.
FR1157965A (en) prefabricated element for framing openings and the like
JPS52121334A (en) Base material for optical fibers