US3090992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the manufacture of filaments or other shaped structures from thermoplasts
Assignee: Hoechst AG
•
Filing: 1960-05-16
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Granted: 1963-05-28
•
Expires: 1980-05-16
Abstract
No abstract record available.
Inventors
- 👤 Schlachter Hans
- 👤 Kunze Oskar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:11
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/06; D01D1/09; B; B29; B29C; B29C45/00; B29C45/17; B29C45/46; B29C45/47; B29C45/50; B29C48/00; B29C48/25; B29C48/252; B29C48/36; B29C48/375; B29C48/387; B29C48/395; B29C48/397; B29C48/45; B29C48/92; B29C2948/00; B29C2948/92; B29C2948/92009; B29C2948/92019; B29C2948/92323; B29C2948/92361; B29C2948/9238; B29C2948/9239; B29C2948/92504; B29C2948/92514; B29C2948/92523; B29C2948/9258; B29C2948/92704; B29C2948/92819; B29C2948/92857; B29C2948/92876; B29C2948/92885; B29C2948/92895; B29C2948/92952; B29C48/03; B29C48/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN AN EXTRUDING APPARATUS FOR SIMULTANEOUSLY PRODUCING A PLURALITY OF SHAPED STRUCTURES FROM THERMOSPLASTS, A CONSTANT SPEED METERING PUMP FOR EACH OF THE PLURALITY OF SHAPED STRUCTURES WHICH DELIVERS LIQUID THERMOSPLAST TO ITS PARTICULAR OUTLET ORIFICE, A ROTARY FEED SCREW FOR DELIVERING LIQUID THERMOPLAST TO THE PLURALITY OF PUMPS AT A CONSTANT PRESSURE TO MAINTAIN A SUBSTANTIALLY CONSTANT RATE OF FLOW FROM EACH OUTLET ORIFICE, MEANS TO MOUNT THE FEED SCREW FOR MOVEMENT AXIALLY, VARIABLE SPEED DRIVING MEANS TO ROTATE SAID SCREW FROM ZERO TO A MAXIMUM SPEED CORRESPONDING TO THE RATE OF FLOW REQUIRED FOR ALL OF THE PUMPS, SAID SCREW HAVING A PISTON, A CYLINDER ENCLOSING THE PISTON, MEANS FOR MAINTAINING A FLUID AT A CONSTANT
Claim 2
Dependent Claim
118 words
IN AN EXTRUDING APPARATUS FOR SIMULTANEOUSLY PRODUCING A PLURALITY OF SHAPED STRUCTURES FROM THERMOSPLASTS, A CONSTANT SPEED METERING PUMP FOR EACH OF THE PLURALITY OF SHAPED STRUCTURES WHICH DELIVERS LIQUID THERMOSPLAST TO ITS PARTICULAR OUTLET ORIFICE, A ROTARY FEED SCREW FOR DELIVERING LIQUID THERMOPLAST TO THE PLURALITY OF PUMPS AT A CONSTANT PRESSURE TO MAINTAIN A SUBSTANTIALLY CONSTANT RATE OF FLOW FROM EACH OUTLET ORIFICE, MEANS TO MOUNT THE FEED SCREW FOR MOVEMENT AXIALLY, VARIABLE SPEED DRIVING MEANS TO ROTATE SAID SCREW FROM ZERO TO A MAXIMUM SPEED CORRESPONDING TO THE RATE OF FLOW REQUIRED FOR ALL OF THE PUMPS, SAID SCREW HAVING A PISTON, A CYLINDER ENCLOSING THE PISTON, MEANS FOR MAINTAINING A FLUID AT A CONSTANT
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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) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |