US2591438A - Portable radio receiver - Google Patents

Portable radio receiver Download PDF

Info

Publication number
US2591438A
US2591438A US2074648A US2591438A US 2591438 A US2591438 A US 2591438A US 2074648 A US2074648 A US 2074648A US 2591438 A US2591438 A US 2591438A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
receiver
handle
casing
portion
radio
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
Inventor
Thomas H Kinman
Robert G Hibberd
Hayward Cyril
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.)
General Electric Co
Original Assignee
General Electric 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
Grant date

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06Receivers
    • H04B1/08Constructional details, e.g. cabinet
    • H04B1/086Portable receivers

Description

April l, T952 T. H. KINMAN ET AL PORTABLE RADIO RECEIVER Filed April 1s, 1948 Patented Apr. l, 1952 PORTABLE RADIO RECEIVER Thomas H. Kinman, Robert G. Hibberd, and Cyril Hayward, Rugby, England, assignors to General Electric Company, a corporation of New York Application April 13, 1948, Serial No. 20,746 In Great Britain April 24, 1947 2 Claims.

This invention relates to radio receivers of small size capable of being carried, thus being available for use at any time and in any position, providing the available signal strength is satisfactory. The primary object of this invention is to provide a portable or pocket size radio receiver with a built-in loop antenna of novel construction.

One of the features of the invention is the provision of a carrying handle for a portable or pocket size radio receiver in which is located a built in loop antenna. An audio reproducing device, such as an earphone, is located in the case which encloses the circuits of the receiver and is connected to those circuits by means of a retractable lead so that the device may be withdrawn from the case for use and readily returned .which Fig. l is a front elevation view, partly in section, of a pocket type radio receiver suitably embodying our invention; Fig. 2 is a vertical side view, partly in section, of the receiver of Fig. l; and Fig. 3 is a sectional view of the receiver of Fig. l taken along the line 3-3.

Referring to Fig. l, we have illustrated a pocket type radio receiver constructed in accordance with our invention and which comprises a hollow outer casing I which may be formed, for example, of metal and to which is connected a rigid carrying handle 2 forming an upper extension of the casing I and incorporating therein a loop type receiving antenna 3. In order that the antenna may pick up radio waves, it is of course necessary for the handle 2 to be formed of a suitable insulating material, preferably of the molded type. As seen in Fig. 2, it is thus preferably in the form of two aperturcd insulating members 1i, 5 adapted to iit together with the apertures in alignment to provide the carrying handle. The handle is thus split into two parts. One or both parts of the handle may contain a slot 6 running around the aperture and adapted to receive the turns of wire constituting the receiving loop antenna 3, the ends of the antenna being brought through suitable bores (not shown) in the handle to extend into the casing I containing thereceiving apparatus.

Preferably the casing I is of ilat, rectangular form and made of metal, the handle portion being inserted into the upper end of the casing and secured thereto, for example, by screws (not shown). Also, the cross-section of the portion of the handle to which the casing is connected is approximately the same as that of the casing so that the handle and casing together provide a smooth external surface.

The casing I may be divided into two compartments, compartment 'I being remote from the handle and containing the batteries (not shown) necessary for operation of the receiving apparatus, while the receiving apparatusitself is contained in the upper compartment 8 which adjoins the handle. The lower portion. I ofA the casing may be hinged, as at 9, to provide ready access to the interior of the casing forattention or replacement of the batteries located therein.

Conveniently, in the neighborhood of the junction between the handle 2 and the casing I, the handle is provided with recesses I0, I I (best seen in Fig. 3) located at opposite ends of the longer of the transverse dimensions of the handle. In the recess I0 is located a knob I2 which is connected with the tuning apparatus of the receiver, the knob thus being in a convenient position with regard to the handle for operation by the user for tuning purposes. The recess II, which may be of substantially the same dimensioiiu as that of the recess IIJ is adapted to receive an audio frequency reproducing device which is illustrated as a miniature earpiece I3 connected with the output of the receiver. The device |13 is provided with an earplug I4 and an enlarged portion I5 which, when in position in the recess II, is adapted to engage the actuator I6 of a switch Il used for connecting the receiver circuits to the battery. In operation, withdrawal or insertion of the earpiece I3 actuates the switch I1 to complete or disconnect the battery circuit, respectively.

A cable I8 comprising twin flexible conductors has one end connected to earpiece I3 and is preferably arranged on a rotatable drum I9 located within the casing I and spring biased by a centrally positioned spring 20 so that, when the receiver is not in use, the cable I8 may be Wound up on the drum when the earpiece I3 is inserted into its recess II The construction of drum I9 is best seen by reference to Fig. 2 and comprises two parallel disks spaced apart by a small axial distance and arranged in the compartment 8 adjacent one of the inner faces of the casing I. One terminal of the cable I8 is connected to a contact ring 2I, While the other terminal is connected to the plate 22 of the drum I9. Contact 2I is carried upon an insulating block 23 positioned between the spring 20 and the Wound cable I8.

Contact ring 2| and plate 22 are arranged to be engaged, respectively, by spring fingers 24, 25, both of which are carried on a plate 26 formed of insulating material and biased into engagement withV ring 2I and contact plate 22 by means of a spring Z'I. The fingers 24, 25 are connected, respectively, to the output terminals of the receiver circuits (not shown). Spring biased contact plate 26 and fingers 24, 25 form a brake for the spring biased drum I9. The brake may be released by means of a push button 28 which depresses one end of a pivoted lever arm 29, the other end of arm 29 being arranged to engage a U`shaped member 30 connected to plate 26 and raise the plate and finger assembly. When the push button 28 is depressed, spring 20 causes rotation of drum I9 to Wind the cable I8 on the drum. The cable may bei unwound from the drum by merely drawing outwardly thereon.

One of theadvantages of our portable or pocket type radio receiver construction is that it permits the use of an adequate antenna compactly arranged in a convenient carrying handle for the receiver. Another advantage is the arrangement of the earpiece I3 to control the operation of the receiver circuits and the connection of that earpiece to the receiver circuit by means of a cable which is wound upon a spring biased drum so that, When the receiver is not in use, the cable I8 is conveniently stored Within the receiver casing. v

While we have shown a particular embodiment of our invention, it will of course be understood that We do not wish to be limited thereto since various modiiications may be made, and We contemplate by the appended claims to cover any such modiiications as fall within the true spirit and scope of our invention.

What We claim as new and desire to secure by Letters Patent of the United States is:

1. In a portable radio receiver comprising radio-chassis and sound-reproducing elements, a casing constructed and arranged to enclose and support said elements, a carrying handle of insulating material having a` generally U-shaped portion adapted to be grasped by the hand and a transverse base portion bridging said U-shaped portion, means securing said base portion rigidly to said casing, means deiining a circumferentially-complete channel through said portions, a loopantenna located within said channel, and electrical connections between said antenna and said chassis.

2. In a portable radio receiver comprising radio-chassis and sound-reproducing elements, a substantially rectangular casing constructed and arranged to enclose and support said elements, a rigid carrying handle of insulating material, said handle having a generally U-shaped portion adapted to be grasped by the hand and a transverse base portion bridging said U-shaped portion, attachment means for securing said base portion rigidly to one end of said casingysaid base portion having substantially the same boundary dimensions as said end of said casing and being arranged to abut against said end so as to form a smooth continuation of the adjoining walls of said casing, means securing said base portion rigidly to said face, means defining a circumferentially-complete channel through said portions of said handle, and a loop antenna having a plurality of turns disposed in said channel, said antenna being operatively connected to said chassis through said base portion.

THOMAS H. KINMAN. ROBERT G. HIBBERD. CYRIL HAYWARD.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Dockendorff Apr. 4, 1950

US2591438A 1947-04-24 1948-04-13 Portable radio receiver Expired - Lifetime US2591438A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2591438X 1947-04-24

Publications (1)

Publication Number Publication Date
US2591438A true US2591438A (en) 1952-04-01

Family

ID=10910981

Family Applications (1)

Application Number Title Priority Date Filing Date
US2591438A Expired - Lifetime US2591438A (en) 1947-04-24 1948-04-13 Portable radio receiver

Country Status (1)

Country Link
US (1) US2591438A (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE951822C (en) * 1954-09-14 1956-11-08 Grundig Max Device with windable mains supply cable, in particular portable Rundfunkgeraet
US2883523A (en) * 1955-09-07 1959-04-21 Francis P Meserow Wireless communication system
US2930038A (en) * 1956-01-03 1960-03-22 Admiral Corp Antenna mounting
US4691383A (en) * 1986-05-13 1987-09-01 Demars Robert A Compact radio
US4899039A (en) * 1988-02-11 1990-02-06 Loral Electro-Optical Systems Inc. Photodetector array for soft hat mounting using a loop antenna
US4901938A (en) * 1988-11-21 1990-02-20 Cantley Donald G Electrical cord retractor
US6215276B1 (en) 2000-02-18 2001-04-10 Charles P. Smith Portable self contained battery charger and radio
US20030117107A1 (en) * 2001-11-09 2003-06-26 Zick Jonathan A. Electrical component, such as a radio, audio component, battery charger or radio/charger
US20050073413A1 (en) * 2003-09-12 2005-04-07 Sedon Nicholas M. Alarming merchandise display system
US20050078834A1 (en) * 2003-10-14 2005-04-14 Credo Technology Corporation Portable battery charging and audio unit
US20050083013A1 (en) * 2001-11-09 2005-04-21 Zick Jonathan A. Electrical component, such as a radio, MP3 player, audio component, battery charger, radio/charger, MP3 player/radio, MP3 player/charger or MP3 player/radio/charger, having a selectively connectable battery charger
US20050083639A1 (en) * 2001-11-09 2005-04-21 Zick Jonathan A. Electrical component, such as a radio, MP3 player, audio component, battery charger, radio/charger, MP3 player/radio, MP3 player/charger or MP3 player/radio/charger, having a selectively connectable battery charger
US20050225288A1 (en) * 2003-10-14 2005-10-13 Credo Technology Corporation Portable battery charging and audio unit
US20060170549A1 (en) * 2005-01-14 2006-08-03 Alpha Security Products, Inc. Portable alarming security device
US20070024237A1 (en) * 2003-10-14 2007-02-01 Credo Technology Corporation And Robert Bosch Gmbh Battery charging jobsite lunchbox
US20080025010A1 (en) * 2006-01-06 2008-01-31 Zick Jonathan A Electrical component, such as a radio, audio component, battery charger or radio/charger
US20110068742A1 (en) * 2001-11-09 2011-03-24 Mccurry Ronald C Audio device that interfaces with a battery charger

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US827576A (en) * 1905-10-17 1906-07-31 Homer Erastus Smith Telephone attachment.
US1153029A (en) * 1914-11-04 1915-09-07 John H W Champion Telephone attachment.
US1954392A (en) * 1931-05-08 1934-04-10 Bell & Howell Co Sound reproducing apparatus
US1993436A (en) * 1931-04-21 1935-03-05 Eberhard Heinrich Transmitter device
US2159632A (en) * 1938-09-24 1939-05-23 Harold H Fries Combination radio receiver-hearing aid unit
US2299058A (en) * 1940-08-03 1942-10-13 Galvin Mfg Corp Radio receiver apparatus
US2388567A (en) * 1943-01-28 1945-11-06 Philco Radio & Television Corp Portable radio receiver
US2397306A (en) * 1943-02-11 1946-03-26 Philco Radio & Television Corp Portable radio receiver
US2487509A (en) * 1948-10-06 1949-11-08 Gen Electric Combination power cord and carrying strap for portable radios
US2502832A (en) * 1945-01-22 1950-04-04 Motorola Inc Indicating and carrying means for portable radio receiving sets

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US827576A (en) * 1905-10-17 1906-07-31 Homer Erastus Smith Telephone attachment.
US1153029A (en) * 1914-11-04 1915-09-07 John H W Champion Telephone attachment.
US1993436A (en) * 1931-04-21 1935-03-05 Eberhard Heinrich Transmitter device
US1954392A (en) * 1931-05-08 1934-04-10 Bell & Howell Co Sound reproducing apparatus
US2159632A (en) * 1938-09-24 1939-05-23 Harold H Fries Combination radio receiver-hearing aid unit
US2299058A (en) * 1940-08-03 1942-10-13 Galvin Mfg Corp Radio receiver apparatus
US2388567A (en) * 1943-01-28 1945-11-06 Philco Radio & Television Corp Portable radio receiver
US2397306A (en) * 1943-02-11 1946-03-26 Philco Radio & Television Corp Portable radio receiver
US2502832A (en) * 1945-01-22 1950-04-04 Motorola Inc Indicating and carrying means for portable radio receiving sets
US2487509A (en) * 1948-10-06 1949-11-08 Gen Electric Combination power cord and carrying strap for portable radios

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE951822C (en) * 1954-09-14 1956-11-08 Grundig Max Device with windable mains supply cable, in particular portable Rundfunkgeraet
US2883523A (en) * 1955-09-07 1959-04-21 Francis P Meserow Wireless communication system
US2930038A (en) * 1956-01-03 1960-03-22 Admiral Corp Antenna mounting
US4691383A (en) * 1986-05-13 1987-09-01 Demars Robert A Compact radio
US4899039A (en) * 1988-02-11 1990-02-06 Loral Electro-Optical Systems Inc. Photodetector array for soft hat mounting using a loop antenna
US4901938A (en) * 1988-11-21 1990-02-20 Cantley Donald G Electrical cord retractor
US6215276B1 (en) 2000-02-18 2001-04-10 Charles P. Smith Portable self contained battery charger and radio
US7868590B2 (en) 2001-11-09 2011-01-11 Milwaukee Electric Tool Corporation Electrical component, such as a radio, MP3 player, audio component, battery charger, radio/charger, MP3 player/radio, MP3 player/charger or MP3 player/radio/charger, having a selectively connectable battery charger
US7609027B2 (en) 2001-11-09 2009-10-27 Milwaukee Electric Tool Corporation Electrical component, audio component, or electrical combination having a selectively connectable battery charger
US7557537B2 (en) 2001-11-09 2009-07-07 Milwaukee Electric Tool Corporation Electrical component having a selectively connectable battery charger
US20050083013A1 (en) * 2001-11-09 2005-04-21 Zick Jonathan A. Electrical component, such as a radio, MP3 player, audio component, battery charger, radio/charger, MP3 player/radio, MP3 player/charger or MP3 player/radio/charger, having a selectively connectable battery charger
US20050083639A1 (en) * 2001-11-09 2005-04-21 Zick Jonathan A. Electrical component, such as a radio, MP3 player, audio component, battery charger, radio/charger, MP3 player/radio, MP3 player/charger or MP3 player/radio/charger, having a selectively connectable battery charger
US8203307B2 (en) 2001-11-09 2012-06-19 Milwaukee Electric Tool Corporation Audio and charging system with audio device, power tool battery, and external battery charger
US20050264260A1 (en) * 2001-11-09 2005-12-01 Milwaukee Electric Tool Corporation Electrical component, such as a radio, audio component, battery charger or radio/charger
US6982541B2 (en) 2001-11-09 2006-01-03 Milwaukee Electric Tool Corporation Electrical component, such as a radio, audio component, battery charger or radio/charger
US7471063B2 (en) 2001-11-09 2008-12-30 Milwaukee Electric Tool Corporation Electrical combination, electrical component and battery charger
US20030117107A1 (en) * 2001-11-09 2003-06-26 Zick Jonathan A. Electrical component, such as a radio, audio component, battery charger or radio/charger
US20110068742A1 (en) * 2001-11-09 2011-03-24 Mccurry Ronald C Audio device that interfaces with a battery charger
US20100039068A1 (en) * 2001-11-09 2010-02-18 Zick Jonathan A Electrical component, such as a radio, mp3 player, audio component, battery charger, radio/charger, mp3 player/radio, mp3 player/charger or mp3 player/radio/charger, having a selectively connectable battery charger
US20110227524A1 (en) * 2001-11-09 2011-09-22 Zick Jonathan A Audio device with power tool battery and external battery charger
US7053774B2 (en) 2003-09-12 2006-05-30 Alpha Security Products, Inc. Alarming merchandise display system
US20050073413A1 (en) * 2003-09-12 2005-04-07 Sedon Nicholas M. Alarming merchandise display system
US20070024237A1 (en) * 2003-10-14 2007-02-01 Credo Technology Corporation And Robert Bosch Gmbh Battery charging jobsite lunchbox
US20050078834A1 (en) * 2003-10-14 2005-04-14 Credo Technology Corporation Portable battery charging and audio unit
US20050225288A1 (en) * 2003-10-14 2005-10-13 Credo Technology Corporation Portable battery charging and audio unit
US8604752B2 (en) 2003-10-14 2013-12-10 Robert Bosch Gmbh Portable battery charging and audio unit
US7835534B2 (en) 2003-10-14 2010-11-16 Robert Bosch Gmbh Battery charging jobsite lunchbox
US7629895B2 (en) 2005-01-14 2009-12-08 Invue Security Products Inc. Portable alarming security device
US7385522B2 (en) 2005-01-14 2008-06-10 Invue Security Products Inc. Portable alarming security device
US20080061975A1 (en) * 2005-01-14 2008-03-13 Alpha Security Products, Inc. Portable alarming security device
US20060170549A1 (en) * 2005-01-14 2006-08-03 Alpha Security Products, Inc. Portable alarming security device
US7741809B2 (en) 2006-01-06 2010-06-22 Milwaukee Electric Tool Corporation Electrical component including a battery receptacle for including a battery
US20080025010A1 (en) * 2006-01-06 2008-01-31 Zick Jonathan A Electrical component, such as a radio, audio component, battery charger or radio/charger

Similar Documents

Publication Publication Date Title
US3573628A (en) Antenna for miniature radio receiver including portions of receiver housing and chassis
US6007363A (en) Magnetically latchable device for electrically coupling a power source to a circuit
US3984645A (en) Lightweight headset and retractable cord spool
US5109539A (en) Portable communication device
US6445933B1 (en) Tele-remote telephone and remote control device
US5172043A (en) Energy using device
US4969206A (en) Portable data collection device with RF transmission
US5551065A (en) Wireless solar entertainment system
US6707924B1 (en) Holder for portable electronic equipment
US5611701A (en) Collapsible prong plug device for battery charger
US6942079B2 (en) Power cord winding and releasing device
US5008864A (en) Portable radio telephone device
US3864172A (en) Battery connecting assembly
US5243355A (en) Semiautomatic retractable antenna apparatus
US7032728B2 (en) Retractable cable assemblies and devices including the same
US6226501B1 (en) Radiotelephone having a primary keypad and a movable flip cover that contains a secondary keypad
US6230860B1 (en) Mobile phone battery charger with power cord winding mechanism
US4008940A (en) Telephone apparatus including electrical connector
US5197091A (en) Portable telephone having a pipe member which supports a microphone
US5177784A (en) Head-set telephone device and method
US2388567A (en) Portable radio receiver
US3701862A (en) Battery holder and three-position switch for hearing aid unit
US3916122A (en) Audio or acoustic apparatus comprising a radio portion and a tape recorder portion
US5230016A (en) Holder for portable electronic equipment
US4634810A (en) Station for the accommodation of a chargeable cordless telephone