US3173379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means and method of pumping lightweight concrete
Assignee: CELLULAR PRODUCTS Co
•
Filing: 1961-05-11
•
Granted: 1965-03-16
•
Expires: 1981-05-11
Abstract
No abstract record available.
Inventors
- 👤 Eugene R Jolly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:13
CPC Classifications
B; B65; B65G; B65G53/00; B65G53/32; Y; Y10; Y10S; Y10S417/00; Y10S417/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
MEANS FOR PUMPING AERATED CONCRETE, COMPRISING: A PAIR OF CONTIGUOUS PRESSURE VESSELS HAVING INLET OPENINGS AT THEIR UPPER ENDS AND DISCHARGE OPENINGS AT THEIR LOWER ENDS; A COMMON DISTRIBUTOR MEANS ABOVE SAID VESSELS COMMUNICATING WITH SAID INLET OPENINGS FOR DIRECTING AERATED CONCRETE INTO EITHER VESSEL; SEALING MEANS FOR THE INLET OPENING OF EACH VESSEL WHEREBY EITHER VESSEL MAY BE SEALED WHILE THE OTHER IS BEING FILLED; A DISTRIBUTOR LINE CONNECTED WITH THE OUTLET OPENINGS OF BOTH VESSELS; A CHECK VALVE INTERPOSED BETWEEN EACH OUTLET OPENING AND SAID DISTRIBUTOR LINE TO PREVENT BACKFLOW TO SAID VESSELS; MEANS FOR SUPPLYING MOTIVE AIR ALTERNATING TO SAID PRES-
Claim 2
Dependent Claim
104 words
MEANS FOR PUMPING AERATED CONCRETE, COMPRISING: A PAIR OF CONTIGUOUS PRESSURE VESSELS HAVING INLET OPENINGS AT THEIR UPPER ENDS AND DISCHARGE OPENINGS AT THEIR LOWER ENDS; A COMMON DISTRIBUTOR MEANS ABOVE SAID VESSELS COMMUNICATING WITH SAID INLET OPENINGS FOR DIRECTING AERATED CONCRETE INTO EITHER VESSEL; SEALING MEANS FOR THE INLET OPENING OF EACH VESSEL WHEREBY EITHER VESSEL MAY BE SEALED WHILE THE OTHER IS BEING FILLED; A DISTRIBUTOR LINE CONNECTED WITH THE OUTLET OPENINGS OF BOTH VESSELS; A CHECK VALVE INTERPOSED BETWEEN EACH OUTLET OPENING AND SAID DISTRIBUTOR LINE TO PREVENT BACKFLOW TO SAID VESSELS; MEANS FOR SUPPLYING MOTIVE AIR ALTERNATING TO SAID PRES-
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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) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |