Patent US5855597A successfully refreshed from Google Patents.
US3390429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making filters of plastic fiber
Assignee: Kralinator Filters Ltd
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Filing: 1966-05-19
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Granted: 1968-07-02
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Expires: 1986-05-19
Abstract
No abstract record available.
Inventors
- 👤 Robert Palmai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:52
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/10; B01D; B01D27/00; B01D27/005; B01D29/00; B01D29/11; B01D29/111; B01D46/00; B29; B29C; B29C69/00; B01D2239/00; B01D2239/10; B29C48/00; B29C48/001; B29C48/0022; B29C48/03; B29C48/07; B29C48/08; Y; Y10; Y10S; Y10S425/00; Y10S425/20; Y10S55/00; Y10S55/05; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028; Y10T156/1033
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
334 words
APPARATUS FOR PRODUCING A CURED FILTER FORM FROM A DRIED RESIN IMPREGNATED MAT COMPRISING CYLINDRICAL FORMING MEANS HAVING AN OPEN END, A LONGITUDINAL SLOT IN SAID CYLINDER COMMUNICATING WITH THE INTERIOR THEREOF, A ROTATABLE ARBOR AXIALLY DISPOSED IN SAID CYLINDER, MEANS FOR ROTATING SAID ARBOR FOR A PREDETEMINED PERIOD TO FORM SAID MAT ABOUT SAID ARBOR AFTER PASSAGE THROUGH SAID SLOT, A PLURALITY OF CURING MOLDS EACH INCLUDING A BASE, A CORE AND A WALL, SURROUNDING SAID CORE, DEFINING AN OPEN ENDED CAVITY, A CARRIER MEMBER FOR SAID PLURALITY OF MOLDS INTERMITTENTLY ROTATABLE TO POSITION THE OPEN END OF EACH OF SAID MOLDS IN AXIAL DISPOSITION WITH RESPECT TO SAID OPEN END OF SAID CYLINDRICAL FORMING MEANS FOR A PREDETERMINED PORTION OF THE TIME NECESSARY TO EFFECT CURING OF THE RESIN, MEANS FOR HEATING SAID MOLDS, A COVER MEMBER TO EACH OF SAID MOLD SUPPORTED ON SAID CARRIER MEMBER, MEANS FOR RECIPROCABLY MOVING SAID COVER PLATE BETWEEN A CLOSED AND AN OPEN PORTIN WHEN ITS RESPECTIVE MOLD IS POSITIONED IN AXIAL ALIGNMENT WITH SID FORMING CYLINDER TO LEAVE SAID OPEN END OF SAID MOLD UNOBSTRUCTED, MEANS FOR EJECTING A CURED FILTER FORM IN SAID MOLD, MEANS RESPONSIVE TO THE REMOVAL OF SAID COVER MEMBER AND EJECTION OF SAID CURED FILTER FORM FOR MOVING THE OPEN END OF SAID CYLINDRICAL MEANS RECIPROCALLY INTO A POSITION OF AT LEAST CLOSE PROXIMITY WITH THE UNOBSTRUCTED OPEN END OF SIAD HEATED MOLD IN AXIAL ALIGNMENT, MEANS RECIPROCABLY MOVABLE IN SAID CYLINDRICAL MEANS RESPONSIVE TO COMPLETION OF FORMATION OF SAID FILTER FORM ABOUT SAID ARBOR AND SAID POSITION OF CLOSE PROXIMITY TO TRANSFER SIAD FORMED FILTER INTO SAID HEATED MOLD AND APPLY ENDWISE COMPRESSION TO SAID FILTER FORM IN SAID HEATED MOLD FOR SAID PREDETERMINED PORTION OF THE TIME NECESSARY TO EFFECT CURING OF SAID RESIN, SAID MEANS RECIPROCABLY MOVABLE IN SAID CYLINDRICALMEANS BEING THEN OPERRATIVELY WITHDRAWN TO TERMINATE ENDWISE PRESSURE AND SAID MEANS FOR RECIPROCABLY MOVING SAID COVER MEMBER OPERATING TO CLOSE SAID OPEN END OF SID MOLD.
Claim 2
Dependent Claim
334 words
APPARATUS FOR PRODUCING A CURED FILTER FORM FROM A DRIED RESIN IMPREGNATED MAT COMPRISING CYLINDRICAL FORMING MEANS HAVING AN OPEN END, A LONGITUDINAL SLOT IN SAID CYLINDER COMMUNICATING WITH THE INTERIOR THEREOF, A ROTATABLE ARBOR AXIALLY DISPOSED IN SAID CYLINDER, MEANS FOR ROTATING SAID ARBOR FOR A PREDETEMINED PERIOD TO FORM SAID MAT ABOUT SAID ARBOR AFTER PASSAGE THROUGH SAID SLOT, A PLURALITY OF CURING MOLDS EACH INCLUDING A BASE, A CORE AND A WALL, SURROUNDING SAID CORE, DEFINING AN OPEN ENDED CAVITY, A CARRIER MEMBER FOR SAID PLURALITY OF MOLDS INTERMITTENTLY ROTATABLE TO POSITION THE OPEN END OF EACH OF SAID MOLDS IN AXIAL DISPOSITION WITH RESPECT TO SAID OPEN END OF SAID CYLINDRICAL FORMING MEANS FOR A PREDETERMINED PORTION OF THE TIME NECESSARY TO EFFECT CURING OF THE RESIN, MEANS FOR HEATING SAID MOLDS, A COVER MEMBER TO EACH OF SAID MOLD SUPPORTED ON SAID CARRIER MEMBER, MEANS FOR RECIPROCABLY MOVING SAID COVER PLATE BETWEEN A CLOSED AND AN OPEN PORTIN WHEN ITS RESPECTIVE MOLD IS POSITIONED IN AXIAL ALIGNMENT WITH SID FORMING CYLINDER TO LEAVE SAID OPEN END OF SAID MOLD UNOBSTRUCTED, MEANS FOR EJECTING A CURED FILTER FORM IN SAID MOLD, MEANS RESPONSIVE TO THE REMOVAL OF SAID COVER MEMBER AND EJECTION OF SAID CURED FILTER FORM FOR MOVING THE OPEN END OF SAID CYLINDRICAL MEANS RECIPROCALLY INTO A POSITION OF AT LEAST CLOSE PROXIMITY WITH THE UNOBSTRUCTED OPEN END OF SIAD HEATED MOLD IN AXIAL ALIGNMENT, MEANS RECIPROCABLY MOVABLE IN SAID CYLINDRICAL MEANS RESPONSIVE TO COMPLETION OF FORMATION OF SAID FILTER FORM ABOUT SAID ARBOR AND SAID POSITION OF CLOSE PROXIMITY TO TRANSFER SIAD FORMED FILTER INTO SAID HEATED MOLD AND APPLY ENDWISE COMPRESSION TO SAID FILTER FORM IN SAID HEATED MOLD FOR SAID PREDETERMINED PORTION OF THE TIME NECESSARY TO EFFECT CURING OF SAID RESIN, SAID MEANS RECIPROCABLY MOVABLE IN SAID CYLINDRICALMEANS BEING THEN OPERRATIVELY WITHDRAWN TO TERMINATE ENDWISE PRESSURE AND SAID MEANS FOR RECIPROCABLY MOVING SAID COVER MEMBER OPERATING TO CLOSE SAID OPEN END OF SID MOLD.
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) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |