US3169504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathodic system
Assignee: Delaware Capital Formation Inc
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Filing: 1963-12-16
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Granted: 1965-02-16
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Expires: 1983-12-16
Abstract
No abstract record available.
Inventors
- 👤 Jerome M Gruber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:46
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3204; F16J15/3224; B; B63; B63B; B63B59/00; B63B59/04; B63H; B63H23/00; B63H23/32; B63H23/36; C; C23; C23F; C23F13/00; C23F13/02; C23F13/06; C23F13/08; C23F13/10; F16J15/3268; B63H23/321; B63H2023/327; C23F2213/00; C23F2213/30; C23F2213/31; Y; Y10; Y10S; Y10S277/00; Y10S277/919
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A COMBINATIN INCLUDING: (A) A SHIP HAVING: (1) A METALLIC HULL; (2) A PROPELLER; (3) A ROTATING ELEMENT INCLUDING A SHAFT CARRIED BY THE HULL FOR ROTATING THE PROPELLER; (4) A SEAL FOR PREVENTING INGRESS OF WATER TO THE HULL ALONG THE ROTATING ELEMENT, AND FOR PREVENTING THE EGRESS OF OIL FROM THE HULL ALONG THE ROTATING ELEMENT, SAID SEAL INCLUDING: (A) A SEALING RING SURROUNDING AND CONTACTING THE ROTATING ELEMENT; (B) METALLIC MEANS SUPPORTING THE SEALING RING, SAID METALLIC MEANS BEING LOWER IN THE ELECTROCHEMICAL SERIES THAN THE HULL; (5) AND MEANS FOR ELECTRICALLY CONNECTING THE METALLIC MEANS WITH THE HULL, WHEREBY THE HULL FUNCTION AS AN ANODE AND THE METALLIC MEANS AS A CATHODE.
Claim 2
Dependent Claim
116 words
A COMBINATIN INCLUDING: (A) A SHIP HAVING: (1) A METALLIC HULL; (2) A PROPELLER; (3) A ROTATING ELEMENT INCLUDING A SHAFT CARRIED BY THE HULL FOR ROTATING THE PROPELLER; (4) A SEAL FOR PREVENTING INGRESS OF WATER TO THE HULL ALONG THE ROTATING ELEMENT, AND FOR PREVENTING THE EGRESS OF OIL FROM THE HULL ALONG THE ROTATING ELEMENT, SAID SEAL INCLUDING: (A) A SEALING RING SURROUNDING AND CONTACTING THE ROTATING ELEMENT; (B) METALLIC MEANS SUPPORTING THE SEALING RING, SAID METALLIC MEANS BEING LOWER IN THE ELECTROCHEMICAL SERIES THAN THE HULL; (5) AND MEANS FOR ELECTRICALLY CONNECTING THE METALLIC MEANS WITH THE HULL, WHEREBY THE HULL FUNCTION AS AN ANODE AND THE METALLIC MEANS AS A CATHODE.
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) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |