US3343213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for granulating thermoplastic material
Assignee: Werner and Pfleiderer GmbH
•
Filing: 1965-03-19
•
Granted: 1967-09-26
•
Expires: 1985-03-19
Abstract
No abstract record available.
Inventors
- 👤 Fritsch Rudolf Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:57
CPC Classifications
B; B29; B29B; B29B9/00; B29B9/02; B29B9/06; B29B9/065; B29C; B29C2793/00; B29C2793/009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
A DEVICE FOR GRANULATING THERMOPLASTIC SYNTHETIC MATERIAL, SAID DEVICE COMPRISING A DIE HEAD INCLUDING SUBSTANTIALLY ANNULARLY DISPOSED DISCHARGES APERTURES FOR DISCHARGING THE MATERIAL TO BE GRANULATED IN THE FORM OF STRANDS, A ROTARY CUTTING TOOL INCLUDING A PLURALITY OF SUBSTANTIALLY RADIALLY DISPOSED AND CIRCUMFERENTIALLY SPACED CUTTERS FOR GRANULATING THE DISCHARGED MATERIAL, SAID CUTTING TOOL BEING MOUNTED ON THE DISCHARGE SIDE OF SAID THE HEAD CLOSELY ADJACENT THERETO AND COAXIALLY WITH THE CENTER AXIS OF SAID ANNULARLY DISPOSED APERTURES, A CLOSED CATCHING AND COOLING HOOD OF SUBSTANTIALLY CIRCULAR CROSS SECTION DISPOSED COAXIALLY WITH SAID CUTTING TOOL FOR CATCHING THE GRANULES FORMED BY CUTTING OF THE DISCHARGED MATERIAL, SAID HOOD HOUSING THE CUTTING TOOL AND EXTENDING FORWARDLY IN REFERENCE TO SAID DIE HEAD AND CUTTING TOOL, INLET CONDUIT MEANS CONNECTED TO THE HOOD ADJACENT TO SAID DIE HEAD FOR TANGENTIALLY DIRECTING A PRESSURIZED FLOW OF A COOLANT INTO SAID HOOD TO GENERATE THEREIN A SPIRALING FLOW OF THE COOLANT DIRECTED TOWARD THE FORWARD END OF THE HOOD AND CARRYING WITH IT THE GRANULES WHILE COOLING THE SAME, AND OUTLET CONDUIT MEANS CONNECTED TO SAID HOOD FORWARDLY SPACED APART FROM SAID INLET CONDUIT MEANS FOR DISCHARGING THE COOLANT AND THE COOLED GRANULES THEREIN FROM THE HOOD.
Claim 2
Independent Claim
203 words
A DEVICE FOR GRANULATING THERMOPLASTIC SYNTHETIC MATERIAL, SAID DEVICE COMPRISING A DIE HEAD INCLUDING SUBSTANTIALLY ANNULARLY DISPOSED DISCHARGES APERTURES FOR DISCHARGING THE MATERIAL TO BE GRANULATED IN THE FORM OF STRANDS, A ROTARY CUTTING TOOL INCLUDING A PLURALITY OF SUBSTANTIALLY RADIALLY DISPOSED AND CIRCUMFERENTIALLY SPACED CUTTERS FOR GRANULATING THE DISCHARGED MATERIAL, SAID CUTTING TOOL BEING MOUNTED ON THE DISCHARGE SIDE OF SAID THE HEAD CLOSELY ADJACENT THERETO AND COAXIALLY WITH THE CENTER AXIS OF SAID ANNULARLY DISPOSED APERTURES, A CLOSED CATCHING AND COOLING HOOD OF SUBSTANTIALLY CIRCULAR CROSS SECTION DISPOSED COAXIALLY WITH SAID CUTTING TOOL FOR CATCHING THE GRANULES FORMED BY CUTTING OF THE DISCHARGED MATERIAL, SAID HOOD HOUSING THE CUTTING TOOL AND EXTENDING FORWARDLY IN REFERENCE TO SAID DIE HEAD AND CUTTING TOOL, INLET CONDUIT MEANS CONNECTED TO THE HOOD ADJACENT TO SAID DIE HEAD FOR TANGENTIALLY DIRECTING A PRESSURIZED FLOW OF A COOLANT INTO SAID HOOD TO GENERATE THEREIN A SPIRALING FLOW OF THE COOLANT DIRECTED TOWARD THE FORWARD END OF THE HOOD AND CARRYING WITH IT THE GRANULES WHILE COOLING THE SAME, AND OUTLET CONDUIT MEANS CONNECTED TO SAID HOOD FORWARDLY SPACED APART FROM SAID INLET CONDUIT MEANS FOR DISCHARGING THE COOLANT AND THE COOLED GRANULES THEREIN FROM THE HOOD.
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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |