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AssigneesJBL Incorporated, Ford Motor Company
InventorsCharles L. Willard, Earl R. Geddes, Robert H. Benedict
Estimating the term…
For transducers such as loudspeakers and actuators which must operate at unusually low or high ambient temperatures, a robust resilient annular support member for mounting the vibratable diaphragm extends outwardly therefrom to the main frame. The support member is formed from silicone elastomer or a silicone rubber composite in a molding process which may be a constant temperature process, preferably transfer molding. A diaphragm and a surround member may be bonded together in the molding process by inserting the edge of the diaphragm into the cavity mold. The molding techniques of silicone rubber composites containing pulp and weave fiber grades of commercially available mix materials allow transfer, compression or injection molding of diaphragm suspension system members with good control of the mechanical properties and thickness. Particularly with regard to surround suspensions, the ability to mold silicone rubber composite in thin cross sections and to vary the thickness and undulation pattern in the resilient region adds a great degree of design freedom.
In an acoustical transducer for extreme temperature usage in an unusually harsh environment, said transducer being of the type having a main body and a diaphragm that is vibratable relative to the main body, an improved resilient support structure, for supporting the diaphragm from the main body, comprising:
In an acoustical transducer that is required to operate reliably over an extremely wide temperature range in an usually harsh environment, said transducer being of the type having a main body and a diaphragm that is vibratable relative to the main body, the diaphragm having a circumferential attachment portion, an improved resilient support structure for supporting the diaphragm from the main body, said support structure comprising:
In an acoustical transducer, for use in harsh environments, having a diaphragm that is vibratable relative to a main body of the transducer and that is provided with a pair of attachment surfaces one on each side of a circumferential portion thereof, an improved resilient support structure, for supporting the diaphragm from the main body, comprising:
Dependencies are inferred from the claim text.