Patent US3168296A successfully refreshed from Google Patents.
US3168296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pan type concrete mixers
Assignee: Stothert and Pitt Ltd
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Filing: 1963-05-13
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Granted: 1965-02-02
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Expires: 1983-05-13
Abstract
No abstract record available.
Inventors
- 👤 Cowley Harold Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:57
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/05; B01F27/051; B01F27/052; B01F27/80; B01F27/82; B01F33/00; B01F33/86; B28; B28C; B28C5/00; B28C5/08; B28C5/10; B28C5/12; B28C5/16; B28C5/163
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
135 words
A PAN TYPE MIXER COMPRISING AN ANNULAR PAN PROVIDING A MIXER CHAMBER; A VERTICAL SHAFT SUBSTANTIALLY COAXIAL WITH SAID PAN; A SPIDER STRUCTURE COMPRISING A PLURALITY OF RADIALLY DISPOSED SPIDER ARMS MOUNTED ON SAID SHAFT FOR ROTATION AN OUT THE AXIS THEREOF ABOVE THE LEVEL OF MATERIAL TO BE MIXED IN SAID CHAMBER; A PLURALITY OF SUPPORTING ARMS CONNECTED TO AND DEPENDING FROM SAID SPIDER ARMS RESPECTIVELY INTO SAID MIXING CHAMBER; A PLURALITY OF BLADES CONNECTED TO THE RESPECTIVE SUPPORTING ARMS AND BEING ADAPTED TO CIRCULATE WITHIN SAID MIXING CHAMBER ON ROTATION OF SAID SPIDER STRUCTURE; AND A PLURALITY OF WEAR RESISTANT SLEEVES SURROUNDING AND BEING SECURED TO THE RESPECTIVE SUPPORTING ARMS AND EXTENDING BETWEEN THE CONENCTIONS OF SAID SUPPORTING ARMS TO SAID SPIDER ARMS AND THE CONNECTIONS OF SAID BLADES TO SAID SUPPORTING ARMS.
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) | 1968-02-02 | 1968-08-03 | 1969-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-02 | 1972-08-03 | 1973-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-02 | 1976-08-03 | 1977-02-02 | $7700.00 | Window Closed / Lapsed |