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Patent US3205321A successfully refreshed from Google Patents.
US3205321A
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Miniature electrolytic timer with an erodable anode
Assignee: Individual
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Filing: 1964-01-21
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Granted: 1965-09-07
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Expires: 1984-01-21
Abstract
No abstract record available.
Inventors
- 👤 Robert J Lyon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:04
CPC Classifications
F; F42; F42B; F42B22/00; F42B22/22; F42C; F42C9/00; F42C9/14; F42C9/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
AN ELECTROLYTIC TIME DELAY DEVICE COMPRISING: A CELL HAVINGAN ELECTROLYTE CHAMBER THEREWITHIN, A CATHODE ELEMENT AT ONE SIDE OF SAID CELL AND EXTENDING INTO SAID CHAMBER, A PLUNGER HOUSING AT THE OTHER SIDE OF SAID CELL, SAID PLUNGER HOUSING HAVINGAN OPENING THEREIN EXTENDING INTO SAID CELL, AN ANODE ELEMENT IN SAID OPENING AND HAVING AN ENLARGED HEAD PORTION LARGER THAN SAID OPENING DISPOSED WITHIN SAID CHAMBER, A PLUNGER ATTACHED TO SAID ANODE ELEMENT, A SPRING ACTING BETWEEN SAID PLUNGER HOUSING AND SAID PLUNGER FOR URGING SAID PLUNGER AWAY FROM SAID CHAMBER UNTIL SAID HEAD PORTION ENGAGES THE WALL OF SAID CHAMBER, THEREBY DEFINING A RETRACTED POSITION FOR SAID PLUNGER, AND AN ELECTROLYTE IN SAID CHAMBER, WHEREBY WHEN AN ELECTRIC CURRENT IS ESTABLISHED IN SAID ELECTROLYTE, SAID ENLARGED HEAD PORTION ON SAID ANODE IS ERODED UNTIL IT IS SMALL ENOUGHT TO PASS THROUGH SAID OPENING WHEREUPON SAID PLUNGER IS MOVED FORWARD BY SAID SPRING TO AN ADVANCED POSITION.
Claim 2
Dependent Claim
157 words
AN ELECTROLYTIC TIME DELAY DEVICE COMPRISING: A CELL HAVINGAN ELECTROLYTE CHAMBER THEREWITHIN, A CATHODE ELEMENT AT ONE SIDE OF SAID CELL AND EXTENDING INTO SAID CHAMBER, A PLUNGER HOUSING AT THE OTHER SIDE OF SAID CELL, SAID PLUNGER HOUSING HAVINGAN OPENING THEREIN EXTENDING INTO SAID CELL, AN ANODE ELEMENT IN SAID OPENING AND HAVING AN ENLARGED HEAD PORTION LARGER THAN SAID OPENING DISPOSED WITHIN SAID CHAMBER, A PLUNGER ATTACHED TO SAID ANODE ELEMENT, A SPRING ACTING BETWEEN SAID PLUNGER HOUSING AND SAID PLUNGER FOR URGING SAID PLUNGER AWAY FROM SAID CHAMBER UNTIL SAID HEAD PORTION ENGAGES THE WALL OF SAID CHAMBER, THEREBY DEFINING A RETRACTED POSITION FOR SAID PLUNGER, AND AN ELECTROLYTE IN SAID CHAMBER, WHEREBY WHEN AN ELECTRIC CURRENT IS ESTABLISHED IN SAID ELECTROLYTE, SAID ENLARGED HEAD PORTION ON SAID ANODE IS ERODED UNTIL IT IS SMALL ENOUGHT TO PASS THROUGH SAID OPENING WHEREUPON SAID PLUNGER IS MOVED FORWARD BY SAID SPRING TO AN ADVANCED POSITION.
References Cited (Backward Citations)
US2741182A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |