US4327322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bidirectional current supply circuit
Assignee: POWERS MEDICAL SYSTEMS Inc
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Filing: 1980-10-06
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Granted: 1982-04-27
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Expires: 2000-10-06
Abstract
Abstract A bidirectional current supply circuit for nerve stimulation including current-level adjusters and a mode switch having two operating conditions. One condition provides for operation solely with one adjuster in series circuit for common control of the level of current flowing in opposite directions through a load connected to the circuit. The other condition provides for operation with a pair of adjusters substantially in parallel circuit with each other for independent level-control of current flowing in reverse directions through a load.
Inventors
- 👤 Tex N. Yukl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:46
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/36014; A61N1/36021
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
71 words
A current supply circuit comprising a pair of output terminals adapted for connection to a load, a controlled changeable-direction current source operatively connected to said terminals for supplying current to a load connected therebetween, and current control means operatively connected to said source, and therethrough to said terminals, for enabling independent adjusting of the level of current flowing in each of the two possible directions through such load via said terminals.
Claim 2
Dependent Claim
71 words
A current supply circuit comprising a pair of output terminals adapted for connection to a load, a controlled changeable-direction current source operatively connected to said terminals for supplying current to a load connected therebetween, and current control means operatively connected to said source, and therethrough to said terminals, for enabling independent adjusting of the level of current flowing in each of the two possible directions through such load via said terminals.
Claim 3
Dependent Claim
16 words
The circuit of claim 1, wherein said control means includes a pair of independent level-control adjusters.
Claim 4
Dependent Claim
85 words
A current supply circuit comprising a pair of output terminals adapted for connection to a load, a controlled changeable-direction current source operatively connected to said terminals for supplying current to a load connected therebetween, and dual-operating-mode current-level control means operatively connected to said terminals through said source for enabling, selectively, operation of the current supply circuit in one mode where common-level control is provided for current flow in reverse directions, and in another mode where independent-level control is provided for such flow in reverse directions.
Claim 5
Dependent Claim
85 words
A current supply circuit comprising a pair of output terminals adapted for connection to a load, a controlled changeable-direction current source operatively connected to said terminals for supplying current to a load connected therebetween, and dual-operating-mode current-level control means operatively connected to said terminals through said source for enabling, selectively, operation of the current supply circuit in one mode where common-level control is provided for current flow in reverse directions, and in another mode where independent-level control is provided for such flow in reverse directions.
Claim 6
Dependent Claim
190 words
A current supply circuit comprising a pair of output terminals adapted for connection to a load, a controlled changeable-direction current source operatively connected to said terminals for supplying current to a load connected therebetween, and dual-operating-mode current-level control means operatively connected to said terminals through said source for enabling, selectively, operation of the current supply circuit in one mode where common-level control is provided for current flow in reverse directions, and in another mode where independent-level control is provided for such flow in reverse directions, said control means including a pair of adjusters, and switching means operatively connected to said adjusters, said switching means having a pair of switch conditions, one of which effects placement of the control means in said one mode with only one of the two adjusters operatively connected to said terminals through said source whereby current level control is controlled in reverse-flow directions solely by said one adjuster, and the other of which effects placement of the control means in said other mode with said two adjusters operatively interactive with one another in such a manner that each adjuster independently effects current-level control in reverse-flow directions.
Claim 7
Dependent Claim
190 words
A current supply circuit comprising a pair of output terminals adapted for connection to a load, a controlled changeable-direction current source operatively connected to said terminals for supplying current to a load connected therebetween, and dual-operating-mode current-level control means operatively connected to said terminals through said source for enabling, selectively, operation of the current supply circuit in one mode where common-level control is provided for current flow in reverse directions, and in another mode where independent-level control is provided for such flow in reverse directions, said control means including a pair of adjusters, and switching means operatively connected to said adjusters, said switching means having a pair of switch conditions, one of which effects placement of the control means in said one mode with only one of the two adjusters operatively connected to said terminals through said source whereby current level control is controlled in reverse-flow directions solely by said one adjuster, and the other of which effects placement of the control means in said other mode with said two adjusters operatively interactive with one another in such a manner that each adjuster independently effects current-level control in reverse-flow directions.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-04-26 | 1985-10-26 | 1986-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-26 | 1989-10-26 | 1990-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-26 | 1993-10-26 | 1994-04-27 | $7700.00 | Window Closed / Lapsed |