Patent US3306540A successfully refreshed from Google Patents.
US3306540A
Expired / Lapsed
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Urethane-foam mixing head
Assignee: Jennings Machine Corp
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Filing: 1964-08-20
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Granted: 1967-02-28
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Expires: 1984-08-20
Abstract
No abstract record available.
Inventors
- 👤 Herman E Reichert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:40
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/40; B29B7/42; B29B7/421; B29B7/74; B29B7/7404; B29B7/7409; B29B7/7419; B29B7/7423; Y; Y10; Y10S; Y10S261/00; Y10S261/26; Y10S521/00; Y10S521/917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A DISPENSER ATTACHMENT FOR A FOAM-MIXING HEAD COMPRISING A HOLLOW NOSE CONE HAVING A PASSAGE WHICH AT ONE END RECEIVES MATERIAL FROM SAID HEAD FOR DISCHARGE FROM THE OPPOSITE END, A SPRAY PLATE EXTENDING ACROSS SAID PASSAGE INTERMEDIATE SAID ENDS THEREOF, SAID PLATE HAVING HOLES EXTENDING THERETHROUGH FOR PASSAGE OF SAID MATERIAL AND HAVING PASSAGES EXTENDING INTERMEDIATE OPPOSITE FACES OF THE PLATE TO PORTS OPENING ONLY ON THE DISCHARGE FACE OF THE PLATE, SAID NOSE CONE HAVING A FITTING FOR SUPPLY OF GAS UNDER PRESSURE TO THE PORT PASSAGES OF SAID SPRAY PLATE, A HOUSING REMOVALBY ATTACHED AT ONE END TO THE MIXING HEAD FOR COMMUNICATION WITH A MIXING CHAMBER THEREOF AND AT ITS OTHER END PROVIDED WITH MEANS FOR DETACHABLY RECEIVING SAID NOSE CONE, AND A HELICAL AGITATOR REMOVABLY ATTACHED TO A SHAFT EXTENDING THROUGH AND BEYOND SAID MIXING CHAMBER INTO SAID HOUSING.
Claim 2
Dependent Claim
144 words
A DISPENSER ATTACHMENT FOR A FOAM-MIXING HEAD COMPRISING A HOLLOW NOSE CONE HAVING A PASSAGE WHICH AT ONE END RECEIVES MATERIAL FROM SAID HEAD FOR DISCHARGE FROM THE OPPOSITE END, A SPRAY PLATE EXTENDING ACROSS SAID PASSAGE INTERMEDIATE SAID ENDS THEREOF, SAID PLATE HAVING HOLES EXTENDING THERETHROUGH FOR PASSAGE OF SAID MATERIAL AND HAVING PASSAGES EXTENDING INTERMEDIATE OPPOSITE FACES OF THE PLATE TO PORTS OPENING ONLY ON THE DISCHARGE FACE OF THE PLATE, SAID NOSE CONE HAVING A FITTING FOR SUPPLY OF GAS UNDER PRESSURE TO THE PORT PASSAGES OF SAID SPRAY PLATE, A HOUSING REMOVALBY ATTACHED AT ONE END TO THE MIXING HEAD FOR COMMUNICATION WITH A MIXING CHAMBER THEREOF AND AT ITS OTHER END PROVIDED WITH MEANS FOR DETACHABLY RECEIVING SAID NOSE CONE, AND A HELICAL AGITATOR REMOVABLY ATTACHED TO A SHAFT EXTENDING THROUGH AND BEYOND SAID MIXING CHAMBER INTO SAID HOUSING.
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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |