US2495476A - Wearable electronic hearing aid having a unitary casing for the batteries and the amplifier - Google Patents

Wearable electronic hearing aid having a unitary casing for the batteries and the amplifier Download PDF

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Publication number
US2495476A
US2495476A US686178A US68617846A US2495476A US 2495476 A US2495476 A US 2495476A US 686178 A US686178 A US 686178A US 68617846 A US68617846 A US 68617846A US 2495476 A US2495476 A US 2495476A
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US
United States
Prior art keywords
battery
casing
housing
wall
amplifier
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
US686178A
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English (en)
Inventor
Posen Sam
Harvey E Hanson
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.)
Beltone Hearing Aid Co
Original Assignee
Beltone Hearing Aid Co
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 to BE474741D priority Critical patent/BE474741A/xx
Application filed by Beltone Hearing Aid Co filed Critical Beltone Hearing Aid Co
Priority to US686178A priority patent/US2495476A/en
Priority to FR950134D priority patent/FR950134A/fr
Application granted granted Critical
Publication of US2495476A publication Critical patent/US2495476A/en
Anticipated expiration legal-status Critical
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
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/04—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception comprising pocket amplifiers

Definitions

  • This invention relates to electronic hearing aids of the type wherein the electron tube amplier and the supply batteries therefor are arranged in a common casing which is small enough to be worn in a pocket of the user.
  • 'It is a further object of the invention to provide a hearing aid of the type mentioned wherein atleast one of the supply batteries is used for separating the choke coil or transformer of the electronic amplifier from one at least of the electron tubes of this amplifier.
  • Another object of the invention is to provide anelectrostatic shield between the choke coil or transformer of the electronic amplifier and one at least of the electron tubes of this amplifier, using at least one of the current supply batteries as such shielding means.
  • Another object of the invention is to provide in a, wearable electronic hearing aid wherein the elements of the amplifier are carried by a chassis extending longitudinally of the casing, a lower chamber in said casing delimited by the lower edge of said chassis in such a manner that this chamber will accommodate a rod-shaped battery in horizontal position underneath said chassis and, within a recess of the chassis, a tabletshaped battery above the rod-shaped battery.
  • Still another object of the invention is to provide a hearing aid of the type mentioned, wherein metal strips arranged to both sides of the width of the chassis carrying the hearing aid elements extend over the majorv part of the length of the casing and receive between them the terminals of the aforementioned rod-shaped battery, being thereby held at constant potential.
  • a further object of the invention is to provide a hearing aid of the type mentioned wherein a partition wall projecting from the front wall of the casing towards the back wall thereof is arranged and shaped so as to divide the casing into two dovetailing compartments, the one of said compartments having a lower and an upper section, the lower section extending'across the Whole width of the casing and the upper section 2 extending over a central part only of the width of the casing.
  • a further object ofthe invention is to utilize the clip commonly provided on wearable hearing aids for establishing an electrical connection between a point within the casing below the partition wall mentioned and a point likewise within the casing but above said partition wall.
  • Another object of the invention is to provide in a wearable electronic hearing aid which uses a. battery cell of tablet form, a contact structure and housing vfor that battery which will hold the battery positively in position between two contact elements.
  • a further object of the invention is to render the just mentioned contact structure and housing for'the tablet-shaped battery self-adjusting in the sense that, when the battery is inserted into the battery housing and left to itself, one of the contact elements will force the battery into a rposition in which it is in intimate contact with the other contact element.
  • FIG. 1 is a longitudinal sectional view of one embodiment of the invention
  • Fig. 2 is a vertical sectional view on the line 2-2 of Fig. 1;
  • Fig. 3 is a horizontal sectional view on the line 3--3 of Fig. 1;
  • Fig. 4 is an elevational back view of the hearing aid with the back cover of the casing removed;
  • Fig. 5 is a fragmentary sectional view on the line 5 5 of Fig. 4; n
  • Fig. 6 is a, fragmentary sectional view on the line 6 ⁇ B of Fig. 4
  • Figs. '7, 8, and 9 show a modified form of the contacting and housing structure for the tabletshaped A-battery cell, the three figures showing the cell in three successive stages of insertion into the battery housing;
  • Fig. 10 is a fragmentary view similar to Fig. 4 but with a battery housing of the kind shown in Figs. 7, 8, and 9, the tablet-shaped A-battery cell not being inserted.
  • the hearing aid comprises a casing A composed of a front cover Ill, a lower back cover Il and an upper back cover l2.
  • the front cover Ill and the lower back 3 cover II are connected at the bottom end of the casing by means of a spring hinge I3 permitting the lower back cover II to be readily opened and closed.
  • Extending across the casing between the side walls I4 and I5 of the front cover IB and integral with this front cover is a partition Wall I6 which divides the casing A into a lower compartment I1 and an upper compartment I8.
  • the upper compartment I8 is divided into a frontl space 2jIj anda:
  • chassis o r-l panel 23 which extends from the top of the casing downto the partition wall I6.
  • the chassis 23w carries on its front side a microphone24 and various,
  • control 29 a tone controlcombined with a switch 3A0,Vsgclets 3
  • the transformer 28 ⁇ Whosemain po ion is 'situatedAin-V the front space 2
  • the lower compartment I1 which-receives ⁇ the batteries I9, and 210,- @wetens with thev upper Compartment I8., in which the electronic amplifier mountedn onthe panel or chassis 2,3., is ⁇ V housed.
  • the-partition wall I il; has araised'middle portion
  • 10 the tablet-shaped A-battery cell is plgacedwith listens substantially,perpendicular t9 the fromv wall of the casing as well as to the axis of the redt-Shaped Bzbattery I9., Over. thellpwafdlyx tendine portion, 1.6.0; 0f ⁇ the partition..
  • This shielding action of the battery 2D also extends to the tube 25, in regard to which the shielding action of the shell of the battery 20 is supported by the shielding action of the outer shell of the microphone 24 which is situated above the'fifbattery' 2D.
  • )V and the microphone 24 separate the transformer 28 and the output tube 21 from the two iirst stages 25 and 26 of the amplifier.
  • the B-battery I9 which has its terminals 36 Y and ,A31- aty yopposite ends, extends horizontally over the Wholey widtheof the interior of the casing A and, isheld between two contact strips 38 and 39,Y Each of these4 strips 38, 39 extends along one of the two Opposite longitudinal edges of the chassis '23,over the. major part of the length of said edges anddovl'nw-ardly beyond those edges down to the points of contact with the terminals 36- and- 321 ofwthebattery I9.
  • the Vmetal strip 38 is secured to the chassis 23 at 40, whereas the upper end of the metal strip 39 is secured to thechassis ZVQLatAI,
  • the points 40 and 4I* connect to some; parts of thel amplifier which are. not shown.
  • Thev outer shell 43-o f theAA-battery 2jp makes contactwith a ⁇ resilientfcontact kelement 42 which is secured to the back side ofthe chassis 23, whereas the centralu terminal 44 ⁇ at the top of the-cell 20 makes-contact with acontactplate 4,5
  • theconductor 48.leads, as' is show-nin-Fig. 6,' to-an eyelet.A type solder-lug- 50 which nts-into a bush ing.5'
  • Thebushingl contains an inset/52 having itsaxis-atjfisllig. 1) into which ⁇ arscrewA 53 .may beiscrewed :from the backY of the casing, thev backwall I I s beingv thickened at this ypoint1toy form-a.
  • spacing collar 5 4 which, when thescrew 5:3:.is.V screwedIl in, ⁇ abuts against the chassis12f3,
  • Figs. 7 to 10 show one form of such a housing for the A-battery.
  • l again denotes the front wall of the casing of the instrument and 46 the clip.
  • Part of the front wall ID of the casing forms the bottom I0' of an insulating housing which has a side wall 59 of approximately cylindrical shape and is open at the side opposite the bottom l0' except for a .contact plate 61 which covers up a small portion. of the opening of the battery housing.
  • a .f spring contact member 6l Secured to the bottom I0' of the battery housing is a .f spring contact member 6l, which is connected to the @up 4e by means of a rivet '41' or the like.
  • the side wall 59 has an inner surface which is partly in the shape of a cylinder whose axis is perpendicular to the bottom I0' and partly in the shape of a cylinder whose axis is at an angle to the axis of the first named cylinder. That portion of the inner surface which is part of a cylinder whose axis is perpendicular to the bottom l0 forms the upper limitation of the cavity in the battery housing and is indicated at 62, whereas the cylinder surface which is inclined relative to the bottom lil' is indicated at 63 and 64.
  • the battery 20 To insert the battery 20 into the battery housing it is slipped into that housing, using the inclined inner surface 63 as a guide in the manner shown in Fig. '7.
  • the lower edge of the contact plate El is shaped so (along a half circle) that it does not obstruct the insertion of the battery 20.
  • the battery cell is pressed forwardly until it assumes the position shown in Fig. 8 in which it compresses the spring contact 6 I.
  • the battery cell 20 is tilted slightly in counterclockwise direction, bringing thereby the bottom of the cell underneath the projecting edge of the contact plate El.
  • the contact spring 6I which in the housing as shown in Fig. 9 presses upon the center of the battery will, as far as the junction point of partsv Y59, 6l is concerned, have the tendency to turnthe battery in counter-clockwise direction. Such turning is, however, made impossible by the fact that in the position of Fig. 9 the cell 20 bears directly against the wall 62 as well as against the wall 63, so that the cell is held wedged between the spring contact 6
  • the battery is pressed towards the bottom' Hl', exerting the pressure not exactly in the center of the cell but at a point below that center whereby the battery is brought into the position shown in Fig. 8 from which it will slip past the fixed contact 61 into the position shown in Fig. 'I from which it can be easily removed.
  • the battery housing is --shown as being completely closed at its lower tip, the lowermost part of this housing may be Cil eliminated, provided a portion of the lower half of the Vhousing is maintained. This will permit the arrangement of the A-battery directly, that is to say without any, spacing, above the B-battery.
  • an electron tube amplifier having midget tubes and a transformer, supply batteries for said amplifier, said amplierand batteries being arranged in a common casing small enough to be worn in a pocket of the user, a chassis in said casing extending longitudinally of the casing over part only of the length thereof and having mounted thereon said transformer and said tubes, at least one of said supply batteries being arranged so as to form an electrostatic vshield between said transformer and one at least of said electron tubes.
  • said amplifier and batteries being arranged in a common casing small enough to be worn in a pocket of the user, said batteries comprising a rod-shaped B-battery and a tablet-shaped A-battery, a chassis in said casing extending Vlongitudinally of the casing from the top end thereof to a line spaced from the bottom of the casing and having a recess formed in its bottom portion so as to leave in said casing a lower 'Y chamber, said rod shaped B-battery being placed at the bottom ofv said chamber with its axis extending horizontally and said tablet shaped A-battery being placed completely above said B-battery within said recess with its axis extendtoo ing also horizontally but at an angle of 909 to said axis of said B-battery and to the plane of said chassis.
  • casingfcomp-rising a front'iwall; a'back Walkiand sidewalls, .a partition wallzprojecting. from-fsaid front wall towards said'fbackawall,gapchassisfextendingA longitudinallyiof s said 'casing Arfrom the top.
  • one of saidibatteries being ofV tablet* shape-,andarranged underneath ,said partition wall so Vthat itsxaxisY extends substantially prependicularly-f to: said fronti Wall and :said back iwall, ya -m'etalilc memberr-secured to the outside of said tirentv wallf a contact element at the inner surface ofjsaid frontrwall electricallyV connected through; saidfrontI wall with Y said metallic memberfor contacting one terminal of said battery, when the latter-1 isin place vwithin the; casing, and aconductorfelectrically ,connected to v said 'metallicmember traversing said-'front wall ata pointwithinrsaideasing -which isabove said'partition wall, saidm'etallic member thereby?- establishingV an electrical-,connection between electron tube amplier and supplyfbatteries therefor arranged in. ⁇
  • a spring contact memberv carried bythel front sideof said chassis and adapted to bepressed against said fixed contact member bymeans of fa screw extending through saidback plate, said -chassis and said spring contact member into said fixed contact element, an electric conductor behind said chassis being electrically connected to said spring contact member by means of a connector traversing said chassis, and a contact element secured to the back side of said chassis for contacting the second terminal of said battery.
  • An insulating battery housing having a side Wall and a bottom and being open at the end which is opposite said bottom, part of the inner surface of said side wall being in the shape of a cylinder whose axis is inclined to said bottom with the exception of a portion of said inner surface adjoining the open end of said housing, which portion is undercut so as to form a surface which is part of the surface of a cylinder whose axis is perpendicular to said bottom and which intersects said inclined cylindrical surface at a distance from said bottom.
  • An insulating battery housing having a side wall and a bottom and being open at the end which is opposite said bottom, part of the inner surface of said side wall being in the shape of a cylinder whose axis is inclined to said bottom with Athe exception of a portion of said inner surface adioining the open end of said housing and extending over a part only of the circumference of said housing, which portion is undercut so as to form a surface which is part of the surface of a cylinder whose axis is perpendicular to said bottom and which intersects said inclined cylindrical surface at a distance from said bottom.
  • An insulating battery housing for a battery cell having a cylindrical shell said housing having a side wall and a bottom and being open at the end which is opposite said bottom, part of the inner surface of said side wall being in the shape of a cylinder whose axis is inclined to said bottom with the exception of a portion of said inner surface adjoining the open end of said housing and extending over a part only of the circumference of said housing, which portion is undercut so as to form a surface which is part of the surface of a cylinder whose axis is perpendicular to said bottom and which intersects said inclined cylindrical surface at a distance from said bottom, a spring contact secured to saidbottom, and a contact plate at the o-pen top of said housing projecting from the outside beyond the inner contour-line of the top of said housing over a portion of the length thereof, the projecting edge of said contact plate being shaped so as to permit passage of the battery cell into or out of said housing in a position of said cell where its cylindrical shell rests against said inclined cylindrical inner surface of said housing.
  • An insulating battery housing for a battery cell having a cylindrical shell, said housing having a side wall and a bottom and being open at the end which is opposite said bottom, part of the inner surface of said side wall being in the shape of a cylinder whose axis is inclined to said bottom with the exception of a portion no fof :said innerV surface adjoining the open end of ⁇ said housingand extendingover a part only of the circumference of said housing, which portion is'unolercut so as to form a surface Which is part of the surface of a cylinder whose axis is perpendicular to said bottom and which intersects said inclined cylindrical surface at a distance :fromsaid bottom, a spring contact secured to vthe bottom of said housing, and a contact plate at the open top of said housing projecting from the outside beyond the inner contour-line of the top of said housing over a portion of the length thereof, the 'projecting edge of said contact plate being yshaped so as to Vpermit passage of the "battery cell into orout of
  • An insulating battery housing for a battery cell having a cylindrical shell said housing having a side wall and a bottom and being open at the end which is opposite said bottom, part of the inner surface of said side wall being in the shape of a cylinder whose axis is inclined to said bottom with the exception of a portion of said inner surface adjoining the open end of said housing and extending over a part only of the circumference of said housing, which portion is undercut so as to form a surface which is part of the surface of a cylinder whose axis is Derpendicular to said bottom and which intersects said inclined cylindrical surface at a distance from said bottom, a spring contact secured to the bottom of said housing, and a contact plate at the top of said housing projecting from the outside beyond the inner contourline of the top of said housing over a portion of the length thereof, the projecting edge of said contact plate being shaped so as to permit passage of the battery cell into or out of said housing in a position of said cell where its cylindrical shell rests against said inclined cylindrical inner surface of said housing,

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Battery Mounting, Suspending (AREA)
US686178A 1946-07-25 1946-07-25 Wearable electronic hearing aid having a unitary casing for the batteries and the amplifier Expired - Lifetime US2495476A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE474741D BE474741A (en, 2012) 1946-07-25
US686178A US2495476A (en) 1946-07-25 1946-07-25 Wearable electronic hearing aid having a unitary casing for the batteries and the amplifier
FR950134D FR950134A (fr) 1946-07-25 1947-07-25 Appareil acoustique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US686178A US2495476A (en) 1946-07-25 1946-07-25 Wearable electronic hearing aid having a unitary casing for the batteries and the amplifier

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US2495476A true US2495476A (en) 1950-01-24

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US (1) US2495476A (en, 2012)
BE (1) BE474741A (en, 2012)
FR (1) FR950134A (en, 2012)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2589071A (en) * 1950-03-18 1952-03-11 Western Electric Co Battery holder
US2696527A (en) * 1950-04-21 1954-12-07 Maico Company Inc Hearing aid construction
US2761018A (en) * 1949-03-02 1956-08-28 Paravox Inc Hearing aid having a molded chassis
US2886623A (en) * 1954-03-24 1959-05-12 Dictograph Products Co Inc Battery assembly for hearing aids
US6176879B1 (en) * 1998-07-02 2001-01-23 Implex Aktienegesellschaft Hearing Technology Medical implant
US20110106188A1 (en) * 2007-04-23 2011-05-05 Cochlear Limited Implant assembly

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US675390A (en) * 1900-12-08 1901-06-04 R M Keating Motor Company Battery-casing for motor-bicycles.
US1647141A (en) * 1926-12-10 1927-11-01 Meyer William Battery case
US2109189A (en) * 1937-04-26 1938-02-22 Bly Merwyn Electrical testing and detecting apparatus
US2176671A (en) * 1938-11-09 1939-10-17 Aurex Corp A and b battery combination
US2300617A (en) * 1941-01-27 1942-11-03 Daniel J Crowley Radio receiving set
US2308270A (en) * 1940-04-19 1943-01-12 Aurex Corp "a" and "b" battery unit
US2333028A (en) * 1941-05-16 1943-10-26 Mears Radio Hearing Device Cor Battery pack
US2409481A (en) * 1941-06-26 1946-10-15 Thomas B Fordham Combined hearing aid and radio receiving set
US2424422A (en) * 1943-06-12 1947-07-22 Paraphone Hearing Aid Inc Hearing aid apparatus

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US675390A (en) * 1900-12-08 1901-06-04 R M Keating Motor Company Battery-casing for motor-bicycles.
US1647141A (en) * 1926-12-10 1927-11-01 Meyer William Battery case
US2109189A (en) * 1937-04-26 1938-02-22 Bly Merwyn Electrical testing and detecting apparatus
US2176671A (en) * 1938-11-09 1939-10-17 Aurex Corp A and b battery combination
US2308270A (en) * 1940-04-19 1943-01-12 Aurex Corp "a" and "b" battery unit
US2300617A (en) * 1941-01-27 1942-11-03 Daniel J Crowley Radio receiving set
US2333028A (en) * 1941-05-16 1943-10-26 Mears Radio Hearing Device Cor Battery pack
US2409481A (en) * 1941-06-26 1946-10-15 Thomas B Fordham Combined hearing aid and radio receiving set
US2424422A (en) * 1943-06-12 1947-07-22 Paraphone Hearing Aid Inc Hearing aid apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2761018A (en) * 1949-03-02 1956-08-28 Paravox Inc Hearing aid having a molded chassis
US2589071A (en) * 1950-03-18 1952-03-11 Western Electric Co Battery holder
US2696527A (en) * 1950-04-21 1954-12-07 Maico Company Inc Hearing aid construction
US2886623A (en) * 1954-03-24 1959-05-12 Dictograph Products Co Inc Battery assembly for hearing aids
US6176879B1 (en) * 1998-07-02 2001-01-23 Implex Aktienegesellschaft Hearing Technology Medical implant
US20110106188A1 (en) * 2007-04-23 2011-05-05 Cochlear Limited Implant assembly
US8644935B2 (en) 2007-04-23 2014-02-04 Cochlear Limited Methods of forming sealed devices containing heat sensitive components

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Publication number Publication date
FR950134A (fr) 1949-09-19
BE474741A (en, 2012)

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