CONSTRAINED DIAPHRAGM TRANSDUCER
Assignee
NAVY, THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF THE
Filed
Jul 29, 1988
Granted
Apr 14, 1992
Location
San Diego CA (SAIC/General Dynamics)
Abstract
An acoustic source apparatus has a loudspeaker enclosed within a substantly pressure resistant and water tight enclosure. Acoustic energy from the loudspeaker emanates through an opening in the enclosure. This opening is covered by a resilient diaphragm that transmits the acoustic energy to an aqueous medium. A net constrains the diaphragm to a preselected size and shape. The net further impedes overexpansion of the diaphragm and restrains the diaphragm from migrating due to buoyancy. Additonally, the net stiffens and strengthens the diaphragm, to thereby increase the resonant frequency, impedance and quality factor of the transducer system and decrease the transmission bandwidth of the system. Constraining the transducer diaphragm with the net makes higher transducer source levels possible.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Oct 6, 1989
Rescinded
Nov 6, 1991
Duration
2 years, 1 month
Inventor
- 1JOSEPH L. PERCY
Sensitive facility: San Diego CA (SAIC/General Dynamics)
Record Details
- Patent number
- US 5105394
- Application
- 07227976
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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