US3562446A - Acoustical-electrical transducer and support assembly - Google Patents

Acoustical-electrical transducer and support assembly Download PDF

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Publication number
US3562446A
US3562446A US703673A US70367368A US3562446A US 3562446 A US3562446 A US 3562446A US 703673 A US703673 A US 703673A US 70367368 A US70367368 A US 70367368A US 3562446 A US3562446 A US 3562446A
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US
United States
Prior art keywords
tubular member
microphone
preamplifier
counterweight
acoustical
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 - Lifetime
Application number
US703673A
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English (en)
Inventor
Konrad Wolf
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.)
AKG Acoustics GmbH
Original Assignee
AKG Akustische und Kino Geraete GmbH
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
Application filed by AKG Akustische und Kino Geraete GmbH filed Critical AKG Akustische und Kino Geraete GmbH
Application granted granted Critical
Publication of US3562446A publication Critical patent/US3562446A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • 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
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
    • F16M11/10—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a horizontal axis
    • 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
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
    • 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
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M2200/00—Details of stands or supports
    • F16M2200/04—Balancing means
    • F16M2200/041—Balancing means for balancing rotational movement of the head

Definitions

  • An acoustical-electrical transducer and support assembly is composed of an elongated tubular member which supports a microphone capsule of a condenser microphone at one end and the preamplifier of the microphone at the other end with electrical circuitry extending through the tubular member connecting the capsule and the preamplifier.
  • a counterweight member is movably positionable on the end of the tubular member opposite the microphone capsule and incorporates the preamplifier.
  • the tubular member and its attached parts are pivotally supported on a support member at the center of gravity of the assembly.
  • the microphone capsule can be selectively positioned about the support member with its preamplifier disposed in a spaced nonobstructing location on the tubular member.
  • PATENTED FEB 9m 7 v 3;552 44 INV NTOR KONRHD lioLF ATTORNEYS ACOUSTICAL-ELECTRICAL TRANSDUCER AND SUPPORT ASSEMBLY SUMMARY OF THE INVENTION
  • This invention relates to mounting an acoustical-electrical transducer, preferably for a condenser microphone, in which mounting the acoustical-electrical transducer is carried at one end of a long arm and the other end of the arm contains an amplifier.
  • Such mountings are used on theater stages, in concert halls and very often for television programs because they enable the use of very small microphones very close to the artist whereas the visual impression is not disturbed or the overall impression of the stage scenery is not unduly affected.
  • a microphone particularly a condenser microphone
  • a microphone can be reduced in diameter and also in length, although this is less significant, to such an extent that the transducer can be secured at one end of a slender tube and a preamplifier is provided at the other end of the tube and is electrically connected to the microphone by a lowcapacitance line.
  • the latter consists in mostcases of a concentric radio-frequency cable having a copper core 0.3 millimeters in diameter and an insulating covering of foamed polyethylene.
  • the connecting tube itself may constitute the outer sheath of the cable and the inner conductor may be spaced from the inside surface of the tube by ceramic elements or the like. This design enables the use of a particularly slender tube for connecting the microphone and the amplifier.
  • the previous practice has been to provide an extension at the free end of the housing in which the amplifier isaccommodated and to connect the assembly by means of a clip or another suitable adapter to a heavy base, a stand or the like.
  • the center of gravity may be close to the periphery of the supporting surface so that the assembly may tilt or a certain inclination must not be exceeded unless the base is unduly heavy.
  • Another disadvantage of the known assembly is the fact that the attenuation of impact sound is reduced when the connecting tube is highly inclined and the floor stand is unevenly loaded. In this case the resilient layer of the stand is excessively compressed on one side so that its resilience is much reduced.
  • the invention is characterized in that the amplifier or the like is accommodated in a housing which is designed to form a counterweight, the long tubular arm connecting the microphone and the amplifier is pivoted at the center of gravity of the subassembly consisting of the arm, microphone and counterweight in a forked bracket, and the counterweight is designed so that said center of gravity is close to the amplifier housing.
  • the housing which contains the amplifier or the like has an elongated cylindrical or prismatic shape and the counterweight is substantially constituted by a heavy part which entirely or partly surrounds the peripheral surface.
  • this heavy part which substantially constitutes the counterweight of the housing, is slidably mounted to enable an adjustment of the counterweight exactly to the position which is required in view of the weight of the microphone and the lever arm. associated therewith.
  • an adjusting device e.g., a screw or the like, may be provided for this purpose, and may be provided with a scale anda pointer so that the correct adjustment of the counterweight, e.g., for different types of microphones, can be visually indicated and time-consuming attempts to find the correct adjustment are not required.
  • FIGS. 1 and 2 respectively, are front and side elevations showing an assembly according to the invention which is secured to a floor base and FIG. 3 shows the fixation of the assembly to a stand.
  • the assembly according to the invention comprises a tube 1, which carries at one end a acoustical-electrical transducer, e.g., a condenser microphone capsule 2.
  • the amplifier housing 3 has suitably an elongated cylindrical or prismatic shape and is carried at the other. lower end of the tube 1 in FIGS. 1 and 2.
  • the peripheral surface of the housing 3 is formed in part by a preferably slidable sleeve 4, which is designed to form together with the other parts of the housing a counterweight for balancing the weight of the long lever arm and the microphone carried thereby if the connecting tube between the microphone and amplifier is pivoted according to the invention close to the amplifier.
  • the counterweight is so heavy, in accordance with the invention, that the center of gravity of the subassembly consisting of the tube 1, microphone 2 and housing 3 is close to the amplifier housing.
  • the connecting tube is pivoted at said center of gravity in a fork 7 by means of a resilient joint 5, which can be locked by a setscrew 6.
  • a resilient joint 5 which can be locked by a setscrew 6.
  • the fork is combined with a base, which consists of a massive cast-iron plate 8 and an elastic interlayer 9, e.g., of rubber.
  • FIG. 3 shows the assembly according to the invention carried by a stand 10. It is apparent that the overhang of the assembly can be larger in this case than with a simple base as shown in FIGS. 1 and 2.
  • a cable guide is secured to the forked bracket 7 and serves to retain the cable 11 extending from the amplifier 3.
  • An acoustical-electrical transducer and support assembly comprising a condenser microphone, said condenser microphone comprising a microphone capsule, a preamplifier, and electrical means connecting said microphone capsule and preamplifier, an elongated tubular member for supporting said condenser microphone,'said microphone capsule secured to one end of said tubular member, a-counterweight member adjustably positioned on said tubular member adjacent the o posite end thereof from said microphone capsule, said preamplifier mounted within said counterweight member, said electrical means connecting said microphone capsule and preamplifier extending through said tubular member and comprising a low-capacitance line, a support member for pivotally supporting said tubular member condenser microphone and counterweight member at the center of gravity thereof with a short section of said tubular member on which said counterweight is mounted extending from one side of said support member and a considerably longer section of said tubular member having said microphone capsule mounted'on its end extending from the other side of said support member and the length of the longer section being
  • An acoustical-electrical transducer as set forth in claim 1, wherein said support member is a fork-shaped bracket, and a pin extending through said tubular member and supported in said bracket for pivotally positioning said tubular member about said support member.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Pressure Sensors (AREA)
  • Circuit For Audible Band Transducer (AREA)
US703673A 1967-02-13 1968-02-07 Acoustical-electrical transducer and support assembly Expired - Lifetime US3562446A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT138367A AT274917B (de) 1967-02-13 1967-02-13 Halterung für einen Schallempfänger, insbesondere für ein Kondensatormikrophon

Publications (1)

Publication Number Publication Date
US3562446A true US3562446A (en) 1971-02-09

Family

ID=3512685

Family Applications (1)

Application Number Title Priority Date Filing Date
US703673A Expired - Lifetime US3562446A (en) 1967-02-13 1968-02-07 Acoustical-electrical transducer and support assembly

Country Status (4)

Country Link
US (1) US3562446A (de)
AT (1) AT274917B (de)
DE (1) DE1562055B2 (de)
GB (1) GB1184161A (de)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4355213A (en) * 1981-04-06 1982-10-19 Marsh Products, Inc. Microphone assembly
USD365564S (en) 1994-05-11 1995-12-26 Telex Communications, Inc. Microphone
USD368719S (en) 1994-05-11 1996-04-09 Telex Communications, Inc. Microphone
USD379185S (en) * 1995-12-01 1997-05-13 Telex Communications, Inc. Microphone
US5805709A (en) * 1997-04-25 1998-09-08 Liou; I-Chang Desktop microphone base
US5826849A (en) * 1997-06-27 1998-10-27 Eastman Kodak Company Base for a tethered digital camera
US6459801B1 (en) * 2000-09-27 2002-10-01 Taky Electronics Co., Ltd. Structure for adjusting position of microphone on microphone mount
US20110020055A1 (en) * 2009-07-22 2011-01-27 Ryan Kallas Adjustable joint for microphone
US9297409B2 (en) 2011-09-26 2016-03-29 Access Products, LLC Adjustable joint for microphone
USD831004S1 (en) * 2017-04-21 2018-10-16 Shenzhen Maono Technology Co., Ltd Microphone
USD843978S1 (en) * 2017-06-30 2019-03-26 Inmusic Brands, Inc. Broadcasting device
USD855038S1 (en) * 2019-03-21 2019-07-30 Shenzhen Qianhai Patuoxun Network And Technology Co., Ltd Headset stand
USD881852S1 (en) * 2018-11-28 2020-04-21 Ching-Wen Chen Desktop-type mini microphone
USD895566S1 (en) 2019-02-04 2020-09-08 Biamp Systems, LLC Speaker with amplifier
USD896203S1 (en) * 2019-04-02 2020-09-15 Razer (Asia-Pacific) Pte. Ltd. Headphone
USD914638S1 (en) * 2019-02-04 2021-03-30 Biamp Systems, LLC Tear drop pendant speaker
USD918185S1 (en) * 2020-04-29 2021-05-04 Coolcold Technology (Shenzhen) Co., Ltd. Computer microphone
USD1000416S1 (en) * 2021-06-24 2023-10-03 New Audio LLC Wireless headphones
USD1016047S1 (en) * 2022-03-10 2024-02-27 Panasonic Intellectual Property Management Co., Ltd. Microphone stand base

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1725932A (en) * 1927-12-10 1929-08-27 Emerson Electric Mfg Co Felt-covered base member for electric fans and the like
US1887637A (en) * 1930-08-18 1932-11-15 Edmund H Hansen Method for collecting sound
US2031097A (en) * 1935-08-06 1936-02-18 Bucky Gustav Stand for x-ray apparatus and the like
US2122778A (en) * 1936-10-17 1938-07-05 United Res Corp Microphone boom
US2421437A (en) * 1944-11-10 1947-06-03 Rca Corp Microphone boom
US2459722A (en) * 1947-03-12 1949-01-18 Display Lighting Inc Boom light
US2532173A (en) * 1945-05-04 1950-11-28 Electro Voice Microphone stand

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1725932A (en) * 1927-12-10 1929-08-27 Emerson Electric Mfg Co Felt-covered base member for electric fans and the like
US1887637A (en) * 1930-08-18 1932-11-15 Edmund H Hansen Method for collecting sound
US2031097A (en) * 1935-08-06 1936-02-18 Bucky Gustav Stand for x-ray apparatus and the like
US2122778A (en) * 1936-10-17 1938-07-05 United Res Corp Microphone boom
US2421437A (en) * 1944-11-10 1947-06-03 Rca Corp Microphone boom
US2532173A (en) * 1945-05-04 1950-11-28 Electro Voice Microphone stand
US2459722A (en) * 1947-03-12 1949-01-18 Display Lighting Inc Boom light

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4355213A (en) * 1981-04-06 1982-10-19 Marsh Products, Inc. Microphone assembly
USD365564S (en) 1994-05-11 1995-12-26 Telex Communications, Inc. Microphone
USD368719S (en) 1994-05-11 1996-04-09 Telex Communications, Inc. Microphone
USD379185S (en) * 1995-12-01 1997-05-13 Telex Communications, Inc. Microphone
US5805709A (en) * 1997-04-25 1998-09-08 Liou; I-Chang Desktop microphone base
US5826849A (en) * 1997-06-27 1998-10-27 Eastman Kodak Company Base for a tethered digital camera
US6459801B1 (en) * 2000-09-27 2002-10-01 Taky Electronics Co., Ltd. Structure for adjusting position of microphone on microphone mount
US20110020055A1 (en) * 2009-07-22 2011-01-27 Ryan Kallas Adjustable joint for microphone
US8894316B2 (en) 2009-07-22 2014-11-25 Music Express, Llc Adjustable joint for microphone
US10865937B2 (en) 2011-09-26 2020-12-15 Music Express, Llc Adjustable joint for microphone
US9297409B2 (en) 2011-09-26 2016-03-29 Access Products, LLC Adjustable joint for microphone
USD831004S1 (en) * 2017-04-21 2018-10-16 Shenzhen Maono Technology Co., Ltd Microphone
USD843978S1 (en) * 2017-06-30 2019-03-26 Inmusic Brands, Inc. Broadcasting device
USD881852S1 (en) * 2018-11-28 2020-04-21 Ching-Wen Chen Desktop-type mini microphone
USD895566S1 (en) 2019-02-04 2020-09-08 Biamp Systems, LLC Speaker with amplifier
USD914638S1 (en) * 2019-02-04 2021-03-30 Biamp Systems, LLC Tear drop pendant speaker
USD855038S1 (en) * 2019-03-21 2019-07-30 Shenzhen Qianhai Patuoxun Network And Technology Co., Ltd Headset stand
USD896203S1 (en) * 2019-04-02 2020-09-15 Razer (Asia-Pacific) Pte. Ltd. Headphone
USD920953S1 (en) 2019-04-02 2021-06-01 Razer (Asia-Pacific) Pte. Ltd. Headphone
USD918185S1 (en) * 2020-04-29 2021-05-04 Coolcold Technology (Shenzhen) Co., Ltd. Computer microphone
USD1000416S1 (en) * 2021-06-24 2023-10-03 New Audio LLC Wireless headphones
USD1016047S1 (en) * 2022-03-10 2024-02-27 Panasonic Intellectual Property Management Co., Ltd. Microphone stand base

Also Published As

Publication number Publication date
DE1562055B2 (de) 1977-02-17
DE1562055A1 (de) 1970-03-05
AT274917B (de) 1969-10-10
GB1184161A (en) 1970-03-11

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