Patent
Microphone having improved piezoelectric transducer supports
TLDR
In this paper, a microphone assembly in which a piezoelectric transducer beam is attached at one end to a flexible diaphragm and is supported at the other end by simply resting upon an electrical contact without being connected thereto is described.Abstract:
A microphone assembly in which a piezoelectric transducer beam is attached at one end to a flexible diaphragm and is supported at the other end by simply resting upon an electrical contact without being connected thereto. The transducer beam is pressed against the supporting contact by a second electrical contact that is shaped to support the transducer beam near its center and to apply a rotary force thereto. The second electrical contact has a rectangular opening formed in an end portion thereof for receiving and supporting the transducer beam and the end portion of the electrical contact beyond the rectangular opening is rolled over to form a spring for applying rotary force to the transducer beam.read more
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PatentDOI
Ceramic metal matrix diaphragm for loudspeakers
Allan Devantier,An D. Nguyen +1 more
TL;DR: A speaker diaphragm for a loudspeaker that has a composite material formed of two layers of ceramic material separated by a light metal substrate is described in this paper, where the percentage ratio of the thickness of the ceramic layers to the substrate being in the range of from about 10% to 45% for each ceramic layer and a corresponding 80% to 10% for the lightweight metal substrate.
Patent
Moving sensor using mechanical vibrations
TL;DR: In this article, a movement sensor for a process device has a sensor tip and means for transmitting the vibrations from the sensor tip to a transducer means for electrically detecting the resulting vibrations as movement occurs and producing an output signal.
Patent
Oscillator for a timepiece
TL;DR: In this article, an improved, compact, impact-resistant quartz crystal oscillator is provided for a timepiece, which comprises a substantially flat hermetically sealed envelope, a terminal tag provided with a contact pin fixedly mounted in the envelope, and a support therefor comprising a substantially annular support member provided with an annular rib on the periphery thereof defined between opposed elbows therein.
Patent
Conductive rivet for circuit card
TL;DR: The conductive rivet as discussed by the authors was designed to connect the first and second conducting surfaces of circuit board through an aperture in the board and provided a thermal conduction path via tail on the T-shaped rivet to the conical member on the opposing side.
Patent
Sound response time switch for flowing current for a predetermined period of time
TL;DR: In this paper, a sound received by a diaphragm is converted by means of a piezo-electric element into an electric current and amplified, which functions to cause both a monostable multi-vibrator circuit and a load drive circuit to operate in cooperation to close a circuit to an actuator for a predetermined period of time.
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