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AssigneeTimedomain Corporation
InventorsHiroyuki Yoshii, Haruhiko Imamura
Estimating the term…
In a speaker apparatus equipped with a speaker unit including a magnet, a frame and a diaphragm, a speaker housing has a substantially cylindrical shape, and also has such a structure that the speaker unit is secured onto one end surface of the cylindrical shape of the speaker housing so as to substantially cover the speaker unit except for front and back surfaces of the diaphragm. Further, the speaker housing has an opening in another end surface of the cylindrical shape thereof. A support bar extends and has one end secured to a back surface of the magnet of the speaker unit. Furthermore, a weight is secured to another end of the support bar, and then, the weight holds the support bar in a substantially vertical direction and grounds the magnet acoustically and virtually, thereby attenuating and suppressing oscillation transmitted from the magnet to the support bar.
A speaker apparatus comprising:
A speaker apparatus comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Backward citations are indexed for grants only.
By using a single transducer with sound reflecting, diffracting, directing or guiding means: for loudspeakers
For obtaining desired directional characteristic only: by using a single transducer with sound reflecting, diffracting, directing or guiding means
Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers
Term end not estimated
USPTO file history isn’t available for this patent, so only indexed dates are shown.
1. Field of the Invention
The present invention relates to a speaker apparatus, and in particular, to a speaker apparatus for reproducing a complicated waveform of low frequency such as a musical sound or the like with higher improved fidelity.
2. Description of the Related Art
These and other objects and features of the present invention will become clear from the following description taken in conjunction with the preferred embodiments thereof with reference to the accompanying drawings throughout which like parts are designated by like reference numerals, and in which:
FIG. 1 is a partially broken perspective view of a configuration of a speaker apparatus of a first preferred embodiment according to the present invention;
FIG. 2 is a longitudinal sectional view taken along line A-A′ of FIG. 1, and an enlarged longitudinal sectional view of a frame fitting part 5 shown in FIG. 1;
Preferred embodiments according to the present invention will be described below with reference to the accompanying drawings.
In order to solve the problems of the above-described prior art, in particular, to solve the above-mentioned problem of acoustic impedance, the inventors have invented the following preferred embodiments according to the present invention on the basis of such knowledge of the inventors that it is necessary to bring the impedance load as close to resistance load as possible in order to realize high-fidelity reproduction, and it is also necessary to prevent the relative time relationship among element waveforms constituting an original waveform from being broken in order to reproduce a waveform of low frequency with higher improved fidelity. It is noted that, in the following drawings, the same components are indicated by the same reference numerals.
FIG. 1 is a partially broken perspective view of a configuration of a speaker apparatus of a first preferred embodiment according to the present invention. FIG. 2 is a longitudinal sectional view taken along line A-A′ of FIG. 1 and an enlarged longitudinal sectional view of a frame fitting part 5 shown in FIG. 1.