Patent US3128765A successfully refreshed from Google Patents.
US3681585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Analog computer for decompression schedules
Assignee: Individual
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Filing: 1970-02-24
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Granted: 1972-08-01
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Expires: 1990-02-24
Abstract
Abstract A device for computing a diver''s decompression schedule which comprises a variable voltage D.C. power supply connected to the leading set of a plurality of resistor capacitor sets serially connected in electrical cascading relationship. Metering means are connected to at least a majority of the sets for indicating the highest voltage of the capacitors of the sets, both the metering means and power supply being calibrated in units of water depth for cascade charging the capacitors sequentially with time at a voltage corresponding to the time and depth of the dive and for cascade discharging of the capacitors sequentially with time to thereby produce a readout on the metering means to provide an ascent schedule for the diver.
Inventors
- 👤 Gary P Todd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:26
CPC Classifications
B; B63; B63C; B63C11/00; B63C11/02; B63C11/32; G; G06; G06G; G06G7/00; G06G7/48; G06G7/60; B63C2011/021
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
165 words
An analog computer for programming a decompression schedule comprising, in combination, a plurality of resistor-capacitor sets interconnected together with the resistors in said sets in serially connected relationship and with the capacitors in said sets in parallel connected relationship for cascade charging of said capacitors, a variable voltage D.C. power supply for providing a voltage equivalent to a selected water depth, means for connecting said D.C. power supply across the leading set of said resistor-capacitor sets for cascade charging sequentially of the capacitors in said sets proportionally with time to simulate the time spent by a diver at a predetermined diving depth, metering means for monitoring the voltages of at least the majority of capacitors of said plurality of sets to continuously indicate the highest voltage of said monitored capacitors and means for cascade discharging sequentially of the capacitors in said plurality of sets proportionally with time to provide a timed ascent schedule for a diver corresponding to the voltage readout on said metering means.
Claim 2
Dependent Claim
165 words
An analog computer for programming a decompression schedule comprising, in combination, a plurality of resistor-capacitor sets interconnected together with the resistors in said sets in serially connected relationship and with the capacitors in said sets in parallel connected relationship for cascade charging of said capacitors, a variable voltage D.C. power supply for providing a voltage equivalent to a selected water depth, means for connecting said D.C. power supply across the leading set of said resistor-capacitor sets for cascade charging sequentially of the capacitors in said sets proportionally with time to simulate the time spent by a diver at a predetermined diving depth, metering means for monitoring the voltages of at least the majority of capacitors of said plurality of sets to continuously indicate the highest voltage of said monitored capacitors and means for cascade discharging sequentially of the capacitors in said plurality of sets proportionally with time to provide a timed ascent schedule for a diver corresponding to the voltage readout on said metering means.
Claim 3
Dependent Claim
31 words
An analog compUter in accordance with claim 1 wherein said metering means is calibrated in units of water depth to permit a direct readout of the ascent schedule for said diver.
Claim 4
Dependent Claim
52 words
An analog computer in accordance with claim 1 wherein said connecting means includes a variable resistor for reducing the voltage applied to said leading resistor-capacitor to set by said D.C. power supply to a voltage level corresponding to the partial pressure of the inert gas component of air supplied to said diver.
Claim 5
Dependent Claim
44 words
An analog computer in accordance with claim 1 including a normally open switch for connecting all of the capacitors in said plurality of sets to said D. C. voltage supply for simultaneously charging all of said capacitors to a voltage corresponding to atmospheric pressure.
Claim 6
Dependent Claim
57 words
An analog computer in accordance with claim 1 wherein said metering means includes a voltmeter, a plurality of conductors each connected to one of said capacitors in said majority of resistor-capacitor sets and a connector switch for connecting all of said of plurality of conductors to said voltmeter for indicating the highest voltage on said monitored capacitors.
Claim 7
Dependent Claim
101 words
An analog computer in accordance with claim 5 including a selector switch having a plurality of terminals, means for connecting each of said terminals to one of said capacitors in said majority of resistor-capacitor sets, means for connecting all of said selector switch terminals to said connector switch, said connector switch being movable between a first position for connecting said voltmeter to said plurality of conductors and a second position for connecting said voltmeter to said selector switch to obtain a readout on said voltmeter of the voltage on each of said capacitors individually by selective positioning of said selector switch.
Claim 8
Dependent Claim
25 words
An analog computer in accordance with claim 6 including a diode in each of said plurality of conductors for connecting said capacitors to said voltmeter.
Claim 9
Dependent Claim
35 words
An analog computer in accordance with claim 7 wherein said plurality of resistor-capacitor sets includes at least one set between said D. C. power supply and said majority of sets connected to said metering means.
Claim 10
Dependent Claim
32 words
An analog computer in accordance with claim 8 wherein two serially connected resistor-capacitor sets are provided between said D. C. power supply and said majority of sets connected to said metering means.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |