Patent US3881494A successfully refreshed from Google Patents.
US3881494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro pulse arthritic physiotherapy system
Assignee: Individual
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Filing: 1973-05-22
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Granted: 1975-05-06
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Expires: 1993-05-22
Abstract
Abstract An electro-pulse system for providing temporary pain relief to arthritic patients through therapeutic use of a circuit with a two wire alternating current plug connected between a switch and a transformer which in turn is connected to a bridge rectifier, and in turn to a pulse generating portion of said circuit, said pulse generating portion of the circuit consisting of a silicon controlled rectifier and associated control components, said generator portion having an output transformer coupled to a variable amplitude, current limiting, metering, and maximum amplitude limiting circuit with connections to electrodes designed for attachment to the mammalian subject.
Inventors
- 👤 Jr James M Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:12
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/36014; A61N1/36021
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
382 words
An electro-pulse arthritic physiotherapy system for providing an output electronic stimulative impulse to a mammalian subject comprising an alternating current source; a switch means connected to said source; a first transformer having a primary and a secondary; said switch and primary being connected in series with said source; a bridge rectifier; said rectifier being connected to said secondary of said first transformer; said rectifier having first and second outputs; a first resistance; a second transformer having a primary and secondary; said first resistance being connected to said first output; a circuit including a first capacitor connected between said first resistance and the second output; a first Zener diode; a second resistance; said Zener diode and said second resistance being connected in a series circuit between said first resistance and second output of said bridge rectifier; a silicon controlled rectifier having a gate lead; the primary of said second transformer and said silicon controlled rectifier being connected in a circuit in series between said first resistance and second output; and said first capacitance circuit, said Zener diode circuit and said second transfomer primary circuit all being arranged in parallel; said gate lead of the silicon controlled rectifier being connected in to said Zener diode circuit between the Zener diode and second resistance; first and second pins forming output connections for the secondary of said second transformer; a variable resistance connected between said first and second pins in parallel with said secondary of said second transformer; a first electrode for attachment to a mammalian subject; a third resistance; means to connect said third resistance in series with said electrode and a portion of said variable resistance; a second electrode for attachment to a mammalian subject; a first diode; a fourth resistance; a second Zener diode; said second electrode, said first diode and said fourth resistance being connected in series with said second pin; said second Zener diode being connected between said third and fourth resistance elements, and also in parallel with the secondary of said second transformer; a second capacitor connected in parallel with said first diode and said fourth resistance; a second diode connected between said first diode and said second capacitor; a voltmeter connected in parallel with said second capacitor; and a fifth resistance connected between said second capacitor and said voltmeter.
Claim 2
Dependent Claim
382 words
An electro-pulse arthritic physiotherapy system for providing an output electronic stimulative impulse to a mammalian subject comprising an alternating current source; a switch means connected to said source; a first transformer having a primary and a secondary; said switch and primary being connected in series with said source; a bridge rectifier; said rectifier being connected to said secondary of said first transformer; said rectifier having first and second outputs; a first resistance; a second transformer having a primary and secondary; said first resistance being connected to said first output; a circuit including a first capacitor connected between said first resistance and the second output; a first Zener diode; a second resistance; said Zener diode and said second resistance being connected in a series circuit between said first resistance and second output of said bridge rectifier; a silicon controlled rectifier having a gate lead; the primary of said second transformer and said silicon controlled rectifier being connected in a circuit in series between said first resistance and second output; and said first capacitance circuit, said Zener diode circuit and said second transfomer primary circuit all being arranged in parallel; said gate lead of the silicon controlled rectifier being connected in to said Zener diode circuit between the Zener diode and second resistance; first and second pins forming output connections for the secondary of said second transformer; a variable resistance connected between said first and second pins in parallel with said secondary of said second transformer; a first electrode for attachment to a mammalian subject; a third resistance; means to connect said third resistance in series with said electrode and a portion of said variable resistance; a second electrode for attachment to a mammalian subject; a first diode; a fourth resistance; a second Zener diode; said second electrode, said first diode and said fourth resistance being connected in series with said second pin; said second Zener diode being connected between said third and fourth resistance elements, and also in parallel with the secondary of said second transformer; a second capacitor connected in parallel with said first diode and said fourth resistance; a second diode connected between said first diode and said second capacitor; a voltmeter connected in parallel with said second capacitor; and a fifth resistance connected between said second capacitor and said voltmeter.
Claim 3
Dependent Claim
15 words
The system of claim 1, having direct current pulses between 175 microseconds and 5 milliseconds.
Claim 4
Dependent Claim
20 words
The system of claim 2, having an interval of time between pulses from about 40 milliseconds to about 2 seconds.
Claim 5
Dependent Claim
18 words
The system of claim 3, wherein said Zener diodes control the output voltage within a Selected maximum range.
Claim 6
Dependent Claim
18 words
The system of claim 2, wherein said Zener diodes control the output voltage within a selected maximum range.
Claim 7
Dependent Claim
20 words
The system of claim 1, having an interval of time between pulses from about 40 milliseconds to about 2 seconds.
Claim 8
Dependent Claim
18 words
The system of claim 6, wherein said Zener diodes control the output voltage within a selected maximum range.
Claim 9
Dependent Claim
18 words
The system of claim 1, wherein said Zener diodes control the output voltage within a selected maximum range.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |