GB1133049A - Creation of Inventions and Patents with Artificial Intelligence

GB1133049A – Improvements in or relating to electrodynamic microphones
– Google Patents

GB1133049A – Improvements in or relating to electrodynamic microphones
– Google Patents
Improvements in or relating to electrodynamic microphones

Info

Publication number
GB1133049A

GB1133049A
GB13661/67A
GB1366167A
GB1133049A
GB 1133049 A
GB1133049 A
GB 1133049A
GB 13661/67 A
GB13661/67 A
GB 13661/67A
GB 1366167 A
GB1366167 A
GB 1366167A
GB 1133049 A
GB1133049 A
GB 1133049A
Authority
GB
United Kingdom
Prior art keywords
sleeve
casing
capsule
apertures
microphone
Prior art date
1966-03-26
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
GB13661/67A
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.)

Philips Electronics UK Ltd

Original Assignee
Philips Electronic and Associated Industries Ltd
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.)
1966-03-26
Filing date
1967-03-23
Publication date
1968-11-06

1967-03-23
Application filed by Philips Electronic and Associated Industries Ltd
filed
Critical
Philips Electronic and Associated Industries Ltd

1968-11-06
Publication of GB1133049A
publication
Critical
patent/GB1133049A/en

Status
Expired
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

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

H04R1/20—Arrangements for obtaining desired frequency or directional characteristics

H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only

H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means

H04R1/38—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means in which sound waves act upon both sides of a diaphragm and incorporating acoustic phase-shifting means, e.g. pressure-gradient microphone

Abstract

1,133,049. Microphones. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 23 March, 1967 [26 March, 1966], No. 13661/67. Heading H4J. In an electrodynamic microphone, a sleeve may be moved, from a first position in which it seals the rear of a microphone capsule and inhibits entry of sound at the rear, to a second position in which sound can enter at the rear. In the first position the microphone has an omnidirectional characteristic while in the second position it has a cardioid characteristic. A housing 1 (Fig. 1), comprises a soundpermeable cap 2 fitted to a tubular metal casing 3. The diaphragm 5 of a microphone capsule 4 communicates with outside air through a protective member 6 and, in one position of a sleeve 8, through ducts (not shown) at the rear 7 of the capsule 4. The sleeve 8 is urged by a spring 9 against a rubber ring 10 at the capsule rear 7. The casing 3 is encircled by a rotatable collar 11 (Fig. 2) in which is a plastics sleeve 12. A recess 13 in the sleeve 12 receives a lug 14 inside the collar 11. An inclined surface 15a of the sleeve 12 bears on a pin 15b disposed in a longitudinal slot 16 in the casing 3 and screwed to the sleeve 8. Rotation of members 11, 12 forces the pin 15b to move forwards or backwards over the cam surface 15a, whereby the sleeve 8 engages or disengages the ring 10 to close or open the capsule rear 7. Alternatively, the casing (3), Fig. 3 (not shown), encloses a tightly fitting rotatable sleeve (8). A pin (15) secured to the sleeve (8) is movable in a transverse slot in the casing (8). The end of the sleeve (8) facing the capsule (4) has eccentric apertures (18) covered with gauze (19) and which in one position co-operate with apertures in the front of the casing (3) which in turn communicate with the rear of the diaphragm (5). The sleeve wall has apertures (20), which may contain acoustic resistance, and which in one position co-operate with apertures (21) in the wall of the casing (3). In one position of the sleeve (8) the apertures (18, 20, 21) are such that sound can reach the rear of the diaphragm (5).

GB13661/67A
1966-03-26
1967-03-23
Improvements in or relating to electrodynamic microphones

Expired

GB1133049A
(en)

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

NL6604014A

NL6604014A
(en)

1966-03-26
1966-03-26

Publications (1)

Publication Number
Publication Date

GB1133049A
true

GB1133049A
(en)

1968-11-06

Family
ID=19796103
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB13661/67A
Expired

GB1133049A
(en)

1966-03-26
1967-03-23
Improvements in or relating to electrodynamic microphones

Country Status (9)

Country
Link

US
(1)

US3527902A
(en)

AT
(1)

AT276515B
(en)

BE
(1)

BE696120A
(en)

CH
(1)

CH454227A
(en)

DE
(1)

DE1512734B2
(en)

ES
(1)

ES337233A1
(en)

GB
(1)

GB1133049A
(en)

NL
(1)

NL6604014A
(en)

SE
(1)

SE318611B
(en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US3770911A
(en)

1972-07-21
1973-11-06
Industrial Research Prod Inc
Hearing aid system

US3798390A
(en)

1972-07-24
1974-03-19
Gould Inc
Hearing aid with valved dual ports

JPS5910864Y2
(en)

1980-06-16
1984-04-04
本田技研工業株式会社

Microphone holding device

USD288512S
(en)

1985-04-24
1987-03-03
Thermo-Serv, Inc.
Wine glass

US5410608A
(en)

1992-09-29
1995-04-25
Unex Corporation
Microphone

US8003878B2
(en)

2008-08-05
2011-08-23
Gaynier David A
Electroacoustic transducer system

US9116178B1
(en)

2012-10-11
2015-08-25
Reliance Controls Corporation
Circuit tester with variable volume audible voltage indication

USD868042S1
(en)

2017-04-06
2019-11-26
Bing Yang
Karaoke microphone

USD869445S1
(en)

2019-05-22
2019-12-10
Shenzhen Qianhai Patuoxun Network And Technology Co., Ltd
Earphone

USD883260S1
(en)

2019-12-25
2020-05-05
Shenzhen Qianhai Patuoxun Network And Technology Co., Ltd
Earphone

USD893462S1
(en)

2020-03-05
2020-08-18
Shenzhen Humboldt Technology Co., Ltd
Headphone

Family Cites Families (1)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

GB956448A
(en)

1959-06-24
1964-04-29
Philips Electrical Ind Ltd
Improvements in or relating to electrodynamic microphones

1966

1966-03-26
NL
NL6604014A
patent/NL6604014A/xx
unknown

1967

1967-02-24
ES
ES337233A
patent/ES337233A1/en
not_active
Expired

1967-03-21
US
US624942A
patent/US3527902A/en
not_active
Expired – Lifetime

1967-03-22
DE
DE1967N0030204
patent/DE1512734B2/en
active
Granted

1967-03-23
SE
SE4135/67A
patent/SE318611B/xx
unknown

1967-03-23
CH
CH418667A
patent/CH454227A/en
unknown

1967-03-23
AT
AT281867A
patent/AT276515B/en
active

1967-03-23
GB
GB13661/67A
patent/GB1133049A/en
not_active
Expired

1967-03-24
BE
BE696120D
patent/BE696120A/xx
unknown

Also Published As

Publication number
Publication date

ES337233A1
(en)

1968-02-16

US3527902A
(en)

1970-09-08

SE318611B
(en)

1969-12-15

DE1512734A1
(en)

1969-05-22

NL6604014A
(en)

1967-09-27

CH454227A
(en)

1968-04-15

BE696120A
(en)

1967-09-25

AT276515B
(en)

1969-11-25

DE1512734B2
(en)

1976-04-22

Contact information