Aquatic transducer system
First Claim
1. An underwater transducer system for a body of water, comprising:
- (a) a housing;
(b) means for positioning the housing in the water;
(c) a diaphragm in the housing;
(d) means for connecting an outer edge of the diaphragm to the housing, at least one side of the diaphragm being in direct contact with the water;
(e) a coil assembly having at least one turn of a conductive material about a coil axis, opposite ends of the conductive material forming a pair of coil terminals;
(f) means for rigidly affixing the coil assembly to the diaphragm, the coil assembly being movable within the housing, comprising;
(i) a tubular member extending to one end of the coil assembly, the tubular member having a cylindrical inside surface concentric with the coil axis; and
(ii) a centrally located boss portion formed in the diaphragm, the boss portion having a cylindrical outside surface in locating engagement with the inside surface of the tubular member;
(g) a magnetic field magnet in the housing for producing a magnetic field, and having an associated annular slot for receiving the coil assembly, the magnetic field intersecting the conductive material of the coil assembly, whereby a voltage between the coil terminals is correlated with sound waves in the water; and
(h) a cylindrical strip of a lubricative plastic material located within the annular slot for preventing contact between the coil assembly and the magnet by sliding contact between the strip and the coil assembly.
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Accused Products
Abstract
An underwater transducer system reproduces high-fidelity audio signals underwater, and detects and monitors low levels of sound activity, both adjacent to a body of water such as a swimming pool, and in the water. The system includes an underwater housing for a diaphragm that directly contacts the water, a coil assembly movable within the housing and rigidly connected to the center of the diaphragm by a tubular member of the coil assembly engaging a cylindrical boss portion of the diaphragm. The housing can be suspended by an elongated cord member from a wall coping, or mounted within a wall fixture structure. The system can have a source of illumination, a conduit from the source terminating in the housing on the coil axis proximate the diaphragm, and an optical element sealingly protrudes the diaphragm for transmitting light-amplified illumination into the water. A head portion of the optical element that substantially fills the boss portion of the diaphragm incorporates a pair of mirrored surfaces for spreading the illumination and transmitting it into the water. A control unit located to one side of the water provides a speaker mode and a microphone mode of operating the transducer, the microphone mode having a monitor mode and an alarm mode for detecting an alarm condition based on discrimination of an alarm sound condition occurring in the pool. The control unit can also interface a closed circuit TV for visually monitoring the pool. Also disclosed is a method for making the underwater transducer.
26 Citations
48 Claims
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1. An underwater transducer system for a body of water, comprising:
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(a) a housing; (b) means for positioning the housing in the water; (c) a diaphragm in the housing; (d) means for connecting an outer edge of the diaphragm to the housing, at least one side of the diaphragm being in direct contact with the water; (e) a coil assembly having at least one turn of a conductive material about a coil axis, opposite ends of the conductive material forming a pair of coil terminals; (f) means for rigidly affixing the coil assembly to the diaphragm, the coil assembly being movable within the housing, comprising; (i) a tubular member extending to one end of the coil assembly, the tubular member having a cylindrical inside surface concentric with the coil axis; and (ii) a centrally located boss portion formed in the diaphragm, the boss portion having a cylindrical outside surface in locating engagement with the inside surface of the tubular member; (g) a magnetic field magnet in the housing for producing a magnetic field, and having an associated annular slot for receiving the coil assembly, the magnetic field intersecting the conductive material of the coil assembly, whereby a voltage between the coil terminals is correlated with sound waves in the water; and (h) a cylindrical strip of a lubricative plastic material located within the annular slot for preventing contact between the coil assembly and the magnet by sliding contact between the strip and the coil assembly. - View Dependent Claims (2, 3, 4, 5, 8, 9, 10, 11, 21, 22, 23, 24)
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6. An underwater transducer system for a body of water, comprising:
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(a) a housing; (b) a diaphragm movable in the housing; (c) a coil assembly operatively connected to the diaphragm for moving the diaphragm; (d) means for producing a magnetic filed in the housing, whereby a voltage across the coil is connected with sound waves in the water; and (e) a flexible plate member in contact with the water, means for moving an armature connection point of the plate member in a direction normal to the plate member in response to movement of the armature member, and means for connecting the plate member to the housing at locations spaced about the armature connection point, whereby the plate member is caused to flex for producing the correlation between the voltage between the coil terminals and the sound in the water. - View Dependent Claims (7, 47)
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12. An underwater transducer system for a body of water, the body of water being in contact with a wall structure having a coping formed thereon at an upper extremity thereof, the system comprising:
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(a) a housing; (b) a diaphragm movable in the housing; (c) a coil assembly operatively connected to the diaphragm for moving with the diaphragm; (d) means for producing a magnetic field in the housing, whereby a voltage across the coil is correlated with sound waves in the water; (e) an elongated cord member mechanically connected to the housing and having conductors electrically connected to the coil; (f) a hanger member for engaging the coping, the cord member engaging the hanger member for suspending the housing from the coping. - View Dependent Claims (13, 14, 15, 48)
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16. An underwater transducer system for a body of water, comprising:
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(a) a housing; (b) a diaphragm movable in the housing; (c) a coil assembly operatively connected to the diaphragm for moving with the diaphragm; (d) means for producing a magnetic field in the housing, whereby a voltage across the coil is correlated with sound waves in the water; (e) a source of illumination; and (f) conduit means for conducting the illumination from the source, within the coil assembly, and through the diaphragm for illuminating the water. - View Dependent Claims (17, 18, 19, 20)
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25. An underwater transducer system for a body of water, comprising:
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(a) a housing; (b) a diaphragm movable in the housing; (c) a coil assembly operatively connected to the diaphragm for moving with the diaphragm; (d) means for producing a magnetic field in the housing, whereby a voltage across the coil is correlated with sound waves in the water; (e) signal amplifier means; (f) signal output means, located outside of the body of water; (g) microphone connection means for operatively connecting the signal amplifier means between the signal output means and the coil terminals, whereby the signal output means is responsive to the sound waves in the water for signalling activity in the water to a location outside the water; (h) threshold means for producing an alarm signal in response to a predetermined output from the signal amplifier means, the threshold means comprising a discriminator frequency filter circuit for filtering an output of the signal amplifier means, whereby a predetermined relatively low energy level signal pattern associated with a crisis condition produces the alarm signal, and a higher energy level signal pattern associated with normal pool activity does not produce the alarm signal. - View Dependent Claims (26, 27, 28, 29, 30, 31, 36, 46)
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32. An underwater transducer system for a body of water, comprising:
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(a) a housing; (b) a diaphragm movable in the housing; (c) a coil assembly operatively connected to the diaphragm for moving with the diaphragm; (d) means for producing a magnetic field in the housing, whereby a voltage across the coil is correlated with sound waves in the water; (e) signal amplifier means; (f) signal output means, located outside of the body of water; (g) microphone connection means for operatively connecting the signal amplifier means between the signal output means and the coil terminals, whereby the signal output means is responsive to the sound waves in the water for signalling activity in the water to a location outside the water; (h) a radio transmitter operatively responsive to the threshold means for producing an alarm transmission, and a radio receiver for producing a system alarm signal in response to the alarm transmission; and (i) a solar cell array for powering the signal amplifier means, the threshold detector means, and the radio transmitter means.
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33. An underwater transducer system for a body of water, comprising:
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(a) a housing; (b) a diaphragm movable in the housing; (c) a coil assembly operatively connected to the diaphragm for moving with the diaphragm; (d) means for producing a magnetic field in the housing, whereby a voltage across the coil is correlated with sound waves in the water; (e) signal amplifier means; (f) signal output means, located outside of the body of water; (g) microphone connection means for operatively connecting the signal amplifier means between the signal output means and the coil terminals, whereby the signal output means is responsive to the sound waves in the water for signalling activity in the water to a location outside the water; (h) threshold means for producing an alarm signal in response to a predetermined output from the signal amplifier means; and (i) an auxiliary transducer for sensing activity outside of the body of water, and means for producing the alarm signal in response to the auxiliary transducer. - View Dependent Claims (34, 35)
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37. An underwater transducer system for a body of water, comprising:
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(a) a housing; (b) a diaphragm movable in the housing; (c) a coil assembly operatively connected to the diaphragm for moving with the diaphragm; (d) means for producing a magnetic field in the housing, whereby a voltage across the coil is correlated with sound waves in the water; (e) signal amplifier means; (f) signal output means, located outside of the body of water; (g) microphone connection means for operatively connecting the signal amplifier means between the signal output means and the coil terminals, whereby the signal output means is responsive to the sound waves in the water for signalling activity in the water to a location outside the water; (h) an audio signal source; (i) speaker connection means for operatively connecting the signal source to the coil terminals, whereby the sound waves in the water are produced in response to the audio signal source; (j) switching means for selectively inhibiting the microphone connection means in a first mode wherein the sound waves in the water are produced in response to the audio signal source, and for selectively inhibiting the speaker connection means in a second mode wherein the signal output means is responsive to the sound waves for signalling activity in the water to a location outside the water. - View Dependent Claims (38, 39, 40)
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41. An underwater transducer system for a body of water, comprising:
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(a) a housing; (b) means for positioning the housing in the water; (c) aquatic transducer means in the housing, comprising; (i) a diaphragm; (ii) means for connecting an outer edge of the diaphragm to the housing, at least one side of the diaphragm being in direct contact with the water; (iii) a coil member having at least one turn of a conductive material, opposite ends of the conductive material forming a pair of coil terminals; and (iv) means for connecting the coil member to the diaphragm, the coil member being movable within the housing, whereby a voltage between the coil terminals is correlated with sound waves in the water; (d) signal amplifier means; (e) signal output means, located outside of the body of water; (f) microphone connection means for operatively connecting the signal amplifier means to the signal output means and the coil terminals, whereby the signal output means is responsive to the sound waves in the water for signalling activity in the water to a location outside the water; (g) an audio signal source; (h) speaker connection means for operatively connecting the signal source to the coil terminals, whereby the sound waves in the water are produced in response to the audio signal source; and (i) switching means for selectively inhibiting the microphone connection means in a first mode wherein the sound waves in the water are produced in response to the audio signal source, and for selectively inhibiting the speaker connection means in a second mode wherein the signal output means is responsive to the sound waves in the water for signalling activity in the water to a location outside the water.
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42. An underwater transducer system for a body of water, the body of water being in contact with a wall structure having a recess for receiving an underwater fixture, the system comprising:
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(a) a housing for mounting in the recess; (b) aquatic transducer means in the housing, comprising; (i) a diaphragm; (ii) means for connecting an outer edge of the diaphragm to the housing, at least one side of the diaphragm being in direct contact with the water; (iii) a coil member having at least one turn of a conductive material, opposite ends of the conductive material forming a pair of coil terminals; and (iv) means for connecting the coil member to the diaphragm, the coil member being movable within the housing, whereby a voltage between the coil terminals is correlated with sound waves in the water; (c) a source of illumination; (d) conduit means for conducting the illumination from the source, within the coil assembly, and through the diaphragm for illuminating the water. (e) an audio signal source; (f) power amplifier means; (g) speaker connection means for operatively connecting the power amplifier means to the signal source and the coil terminals, whereby the sound waves in the water are produced in response to the audio signal source; and (h) means for modulating the brightness of the illumination source in response to the audio signal source.
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43. An underwater transducer system for a body of water, the body of water being in contact with a wall structure having a recess for receiving an underwater lamp assembly, the system comprising:
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(a) a housing for mounting in the recess; (b) aquatic transducer means in the housing, comprising; (i) a diaphragm having an outer edge and a centrally located boss portion formed in the diaphragm, the boss portion having a cylindrical outside surface; (ii) means for connecting the outer edge of the diaphragm to the housing, at least one side of the diaphragm being in direct contact with the water; (iii) a coil assembly having at least one turn of a conductive material about a coil axis, a tubular member extending to one end of the coil assembly and having a cylindrical inside surface concentric with the coil axis, opposite ends of the conductive material forming a pair of coil terminals, the coil assembly being rigidly affixed to the diaphragm by engagement of the inside surface of the tubular member with the outside surface of the boss portion for locating the coil axis concentric with the boss portion; and (iv) means for producing a magnetic field in the housing, the magnetic field intersecting the conductive material of the coil assembly, whereby a voltage between the coil terminals is correlated with sound waves in the water; (c) a source of illumination; (d) conduit means for conducting the illumination from the source, within the coil assembly, and through the diaphragm for illuminating the water. (e) signal amplifier means; (f) signal output means, located outside of the body of water; (g) microphone connection means for operatively connecting the signal amplifier means to the signal output means and the coil terminals, whereby the signal output means is responsive to the sound waves in the water for signalling activity in the water to a location outside the water; (h) an audio signal source; (i) speaker connection means for operatively connecting the signal source to the coil terminals, whereby the sound waves in the water are produced in response to the audio signal source; and (j) switching means for selectively inhibiting the microphone connection means in a first mode wherein the sound waves in the water are produced in response to the audio signal source, and for selectively inhibiting the speaker connection means in a second mode wherein the signal output means is responsive to the sound waves in the water for signalling activity in the water to a location outside the water.
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44. A method for making an underwater transducer, unit comprising the steps of:
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(a) providing a housing for positioning in a body of water, the housing having a cavity therein; (b) forming a diaphragm with a peripheral edge and a centrally located boss portion, the boss portion having a cylindrical outside surface; (c) providing a coil assembly having at least one turn of a conductor on a coil axis, and a tubular extension at one end of the assembly and having a cylindrical inside surface concentric with the coil axis; (d) affixing the coil assembly to the diaphragm with the coil axis concentric with the boss portion, the - View Dependent Claims (45)
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Specification