US3769838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wave measuring apparatus
Assignee: Department of National Defence
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Filing: 1971-11-18
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Granted: 1973-11-06
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Expires: 1991-11-18
Abstract
Abstract Wave measuring apparatus for determining the wave height on the surface of the sea, including a buoy having an antenna whereby when floating on the sea its motion causes electronic circuitry within it to transmit bursts of RF signals, the pulse repetition rate varying directly in proportion to the acceleration applied to the buoy as it moves up and down on the surface of the sea in which it is located. Ship-borne apparatus is provided to receive the signals transmitted by the wave buoy to analyze them and to provide an indication of the height of the waves of the sea in which the buoy is located.
Inventors
- 👤 L Buckler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 02:34
CPC Classifications
G; G01; G01C; G01C13/00; G01C13/002; G01C13/004
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
118 words
Wave measuring apparatus for determining information relating to waves on the surfaces of a liquid comprising: a wave buoy capable of providing a signal representative of the motion of the buoy when floating on the liquid; receiving means for receiving said signal; discriminator means having an input terminal connected to an output terminal of said receiving means; integrator means having an input terminal connected to an output terminal of said discriminator means, said intergrator means having differentiator means including a capacitor connected to its input terminal in series with its input signal; and indicator means connected to an output terminal of said integrator means to provide an indication of the output therefrom indicative of the said wave information.
Claim 2
Dependent Claim
118 words
Wave measuring apparatus for determining information relating to waves on the surfaces of a liquid comprising: a wave buoy capable of providing a signal representative of the motion of the buoy when floating on the liquid; receiving means for receiving said signal; discriminator means having an input terminal connected to an output terminal of said receiving means; integrator means having an input terminal connected to an output terminal of said discriminator means, said intergrator means having differentiator means including a capacitor connected to its input terminal in series with its input signal; and indicator means connected to an output terminal of said integrator means to provide an indication of the output therefrom indicative of the said wave information.
Claim 3
Dependent Claim
119 words
Wave measuring apparatus for determining the wave height of waves on the surface of a liquid comprising: a wave buoy capable of providing a signal representative of the motion of the buoy when floating on the liquid; receiving means for receiving said signal; discriminator means having an input terminal connected to an output terminal of said receiving means; integrator means having an input terminal connected to an output terminal of said discriminator means, said integrator means having differentiator means including a capacitor coNnected to its input terminal in series with its input signal; and indicator means connected to an output terminal of said integrator means to provide an indication of the output therefrom indicative of the said wave height.
Claim 4
Dependent Claim
119 words
Wave measuring apparatus for determining the wave height of waves on the surface of a liquid comprising: a wave buoy capable of providing a signal representative of the motion of the buoy when floating on the liquid; receiving means for receiving said signal; discriminator means having an input terminal connected to an output terminal of said receiving means; integrator means having an input terminal connected to an output terminal of said discriminator means, said integrator means having differentiator means including a capacitor coNnected to its input terminal in series with its input signal; and indicator means connected to an output terminal of said integrator means to provide an indication of the output therefrom indicative of the said wave height.
Claim 5
Dependent Claim
16 words
Wave measuring apparatus according to claim 2 wherein said integrator means includes a double integrator unit.
Claim 6
Dependent Claim
18 words
Wave measuring apparatus according to claim 2 wherein said discriminator means is a frequency meter and discriminator unit.
Claim 7
Dependent Claim
48 words
Wave measuring apparatus according to claim 4 wherein said integrator means includes two integrator circuits whereby a double integration operation is performed on the input signals fed to the integrator whereby a substantial portion of wave buoy tilt energy is removed from the output of the integrator means.
Claim 8
Dependent Claim
36 words
Wave measuring apparatus according to claim 5 wherein said double integration operation includes integration for frequencies falling on the negative slope and differentiation for frequencies on the positive slope of the characteristic of said integrator means.
Claim 9
Dependent Claim
104 words
Apparatus for measuring vertical accelerations comprising in combination: accelerometer means for generating an output signal whose frequency is proportional to vertical acceleration; receiving means for receiving and demodulating the output of said accelerometer means; means for standardizing the output signal of said receiving means with respect to all characteristics except frequency; filter means for receiving the output of said standardizing means and blocking out a predetermined band of low frequencies, including D.C; and double integrator means for integrating the output of said filter means, said double integrator means operating to integrate only those of its input signals having a frequency above a predetermined frequency.
Claim 10
Dependent Claim
104 words
Apparatus for measuring vertical accelerations comprising in combination: accelerometer means for generating an output signal whose frequency is proportional to vertical acceleration; receiving means for receiving and demodulating the output of said accelerometer means; means for standardizing the output signal of said receiving means with respect to all characteristics except frequency; filter means for receiving the output of said standardizing means and blocking out a predetermined band of low frequencies, including D.C; and double integrator means for integrating the output of said filter means, said double integrator means operating to integrate only those of its input signals having a frequency above a predetermined frequency.
Claim 11
Dependent Claim
24 words
Apparatus as in claim 7, wherein said integrator means acts to differentiate those of its input signals having a frequency below said predetermined frequency.
Claim 12
Dependent Claim
31 words
Apparatus as in claim 7, wherein said integrator means has an input terminal and includes a differentiator circuit, including a capacitor, at said input terminal in series with its input signal.
Claim 13
Dependent Claim
23 words
Apparatus as in claim 9, wherein said integrator means includes dc feedback means to reduce the effect of dc leakage through said capacitor.
References Cited (Backward Citations)
US3110178A
Cited
US3383915A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |