Patent US3141131A successfully refreshed from Google Patents.
US3141131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measuring instrument using a glow tube operated below its ignition threshold
Assignee: Individual
•
Filing: 1962-11-09
•
Granted: 1964-07-14
•
Expires: 1982-11-09
Abstract
No abstract record available.
Inventors
- 👤 Mccoy Marianne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:32
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/165; G01R19/16566; G01R19/16571
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
AN EXTENDED RANGE ELECTRICAL TEST INSTRUMENT COMPRISING A LIGHT-TIGHT HOUSING, A GAS-FILLED GLOW TUBE SITUATED WITHIN SAID HOUSING, SAID GLOW TUBE INCLUDING A PAIR OF SPACED ELECTRODES WITHIN SAID TUBE, A PHOTOELECTRIC CELL POSITIONED WITHIN SAID HOUSING TO RECEIVE LIGHT GENERATED BY SAID GLOW TUBE, THE OUTPUT FROM SAID CELL BEING PROPORTIONAL TO THE AMOUNT OF LIGHT RECEIVED THEREBY, MEANS CONNECTED TO SAID CELL TO INDICATE THE OUTPUT FROM SAID CELL, A SOURCE OF ELECTRICAL ENERGY, THE POTENTIAL OF SAID SOURCE BEING BELOW THE IGNITION THRESHOLD OF SAID GLOW TUBE, AND MEANS FOR CONNECTING SAID SOURCE AND SAID ELECTRODES OF SAID GLOW TUBE IN SERIES WITH AN ELECTRICAL COMPONENT TO BE TESTED WHEREBY THE CURRENT FLOWING THROUGH SAID GLOW TUBE IS THE SAME CURRENT WHICH FLOWS THROUGH THE COMPONENT BEING TESTED.
Claim 2
Dependent Claim
131 words
AN EXTENDED RANGE ELECTRICAL TEST INSTRUMENT COMPRISING A LIGHT-TIGHT HOUSING, A GAS-FILLED GLOW TUBE SITUATED WITHIN SAID HOUSING, SAID GLOW TUBE INCLUDING A PAIR OF SPACED ELECTRODES WITHIN SAID TUBE, A PHOTOELECTRIC CELL POSITIONED WITHIN SAID HOUSING TO RECEIVE LIGHT GENERATED BY SAID GLOW TUBE, THE OUTPUT FROM SAID CELL BEING PROPORTIONAL TO THE AMOUNT OF LIGHT RECEIVED THEREBY, MEANS CONNECTED TO SAID CELL TO INDICATE THE OUTPUT FROM SAID CELL, A SOURCE OF ELECTRICAL ENERGY, THE POTENTIAL OF SAID SOURCE BEING BELOW THE IGNITION THRESHOLD OF SAID GLOW TUBE, AND MEANS FOR CONNECTING SAID SOURCE AND SAID ELECTRODES OF SAID GLOW TUBE IN SERIES WITH AN ELECTRICAL COMPONENT TO BE TESTED WHEREBY THE CURRENT FLOWING THROUGH SAID GLOW TUBE IS THE SAME CURRENT WHICH FLOWS THROUGH THE COMPONENT BEING TESTED.
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) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |