US3280858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid transfer apparatus
Assignee: Individual
•
Filing: 1964-08-21
•
Granted: 1966-10-25
•
Expires: 1984-08-21
Abstract
No abstract record available.
Inventors
- 👤 Clarence E Paulson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:44
CPC Classifications
F; F04; F04F; F04F3/00; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3109
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A LIQUID TRANSFER APPARATUS FOR INSERTION IN A TANK HAVING A FILLING INLET FOR LIQUID COMPRISING: (A) SEALING MEANS ADAPTED TO COVER THE FILLING INLET AND SEAT THE APPARATUS; (B) A VALVE BODY INCLUDING A CHAMBER ABOVE THE SEALING MEANS; (C) A TUBULAR MEMBER DEPENDING FROM THE VALVE BODY AND OPENING INTO THE CHAMBER; (D) A FIRST FLOW PASSAGE OPENING INTO THE CHAMBER; (E) A SEPARATE PAIR OF SPACED-APART VACUUM PASASAGES OPENING INTO THE CHAMBER; (F) A VALVE PLUG ROTATABLY FITTED IN THE CHAMBER AND HAVING SPACED-APART FIRST AND SECOND FLOW PASSAGE MEANS POSITIONED IN THE PLUG WHEREBY ROTATIONAL MOVEMENT OF THE PLUG PLACES THE FIRST FLOW PASSAGE IN FLOW COMMUNICATION WITH THE TUBULAR MEMBER AS THE PAIR OF VACUUM PASSAGES ARE PLACED IN FLOW COMMUNCICATION WITH EACH OTHER, AND CONTINUED ROTATIONAL MOVEMENT STOPS SAID FLOW COMMUNICATIONS;
Claim 2
Dependent Claim
137 words
A LIQUID TRANSFER APPARATUS FOR INSERTION IN A TANK HAVING A FILLING INLET FOR LIQUID COMPRISING: (A) SEALING MEANS ADAPTED TO COVER THE FILLING INLET AND SEAT THE APPARATUS; (B) A VALVE BODY INCLUDING A CHAMBER ABOVE THE SEALING MEANS; (C) A TUBULAR MEMBER DEPENDING FROM THE VALVE BODY AND OPENING INTO THE CHAMBER; (D) A FIRST FLOW PASSAGE OPENING INTO THE CHAMBER; (E) A SEPARATE PAIR OF SPACED-APART VACUUM PASASAGES OPENING INTO THE CHAMBER; (F) A VALVE PLUG ROTATABLY FITTED IN THE CHAMBER AND HAVING SPACED-APART FIRST AND SECOND FLOW PASSAGE MEANS POSITIONED IN THE PLUG WHEREBY ROTATIONAL MOVEMENT OF THE PLUG PLACES THE FIRST FLOW PASSAGE IN FLOW COMMUNICATION WITH THE TUBULAR MEMBER AS THE PAIR OF VACUUM PASSAGES ARE PLACED IN FLOW COMMUNCICATION WITH EACH OTHER, AND CONTINUED ROTATIONAL MOVEMENT STOPS SAID FLOW COMMUNICATIONS;
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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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |