Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having electrostatic element
Patent
1987-01-29
1989-05-09
Caldwell, Sr., John W.
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Having electrostatic element
381117, 381124, 381188, H04R 900, H04K 906
Patent
active
048295825
ABSTRACT:
An electrical transducer comprising a magnet system (1), a diaphragm (5) and a voice-coil device (3, 4), coupled to the diaphragm. The voice coil (3) is situated in an air gap (2) of the magnet system and the magnet system is coupled to a chassis (7). The chassis is provided with a connection unit (10) having at least two coupling means (11, 14) each comprising a first terminal (12 and 15 respectively) for receiving an electric signal and a second terminal (13 and 16 respectively) electrically coupled to said first terminal. Each second terminal is electrically coupled to an electrical connection (20 and 21, respectively) of the voice coil via a lead (18 and 19 respectively). The leads (18, 19) are provided with a spacer (22) made of an electrically non-conductive material, for example, a plastic material (FIG. 2a). Preferably, the connection unit further comprises mechanical coupling elements (26, 27) which cooperate with the spacer to establish a mechanical coupling therebetween prior to the electrical coupling of the two leads (18, 19) to the two second terminals (13, 16). The mechanical coupling is established by clamping.
REFERENCES:
patent: 4097106 (1978-06-01), Over et al.
"Der Lautsprecher in Detail", article from Funkschan 1983, part 7; pp. 99-103.
"Strain Relief Device", by G. E. Martin, IBM Tech. Discl. Bul., vol. 4, No. 5, Oct., 1961.
"Flying Lead Strain Relief", by C. R. Jackson, IBM Tech. Discl. Bul., vol. 23, No. 1, Jun., 1980.
Caldwell Sr. John W.
Franzblau Bernard
Queen Tyrone
U.S. Philips Corp.
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