US2750625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for continuous moulding of synthetic resins
Assignee: Royal Manufacturing Co Inc
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Filing: 1951-03-05
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Granted: 1956-06-19
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Expires: 1971-03-05
Abstract
No abstract record available.
Inventors
- 👤 Roberto Colombo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:31
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/12; F16L9/127; B; B29; B29C; B29C48/00; B29C48/03; B29C48/09; B29C48/16; B29C48/18; B29C48/19; B29C48/20; B29C48/25; B29C48/30; B29C48/32; B29C48/34; B29C48/36; B29C48/49; B29C49/00; B29C49/02; B29C49/04; B29C49/28; B29C49/30; B29C49/36; B29C49/42; B29C49/56; B29C49/5601; B29C49/5602; B29C49/64; B29C49/66; B29C35/00; B29C35/16; B29C2035/1658; B29C2035/1675; B29C2035/1683; B29C49/58; B29C49/60; B29C2049/6091; B29C2949/00; B29C2949/07; B29C2949/074; B29C48/001; B29C48/0017; B29C48/0018; B29C48/0022; B29C48/10; B29C48/12; B29C48/13; B29C48/17; B29C48/21; B29C49/5608; B29L; B29L2023/00; B29L2023/003; Y; Y10; Y10S; Y10S264/00; Y10S264/33
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
IN AN APPARATUS FOR MAKING HOLLOW PLASTIC ARTICLES, A SECTIONAL MOLD COMPRISING A PAIR OF COMPLEMENTARY MOLD HALVES ADAPTED TO BE OPENED AND CLOSED AND DEFINING A MOLD CAVITY HAVING A LOGITUDINAL AXIS ADAPTED TO RECEIVE AN ELONGATED TUBULAR LENGTH OF SOFTENED PLASTIC MATERIAL, MEANS ON SAID MOLD HALVES ADJACENT ONE END OF THE MOLD CAVITY FOR COLLAPSING AND SEALING THE TUBULAR PLASTIC MATERIAL WHEN THE MOLD IS CLOSED, JAW MEANS ON SAID MOLD HALVES AT THE OPPOSITE END OF THE MOLD CAVITY FOR COLLAPSING THE TUBULAR MATERIAL, SAID JAW MEANS PROVIDING IN THE CLOSED POSITION OF THE MOLD AN END OPENING IN THE MOLD ON SAID LONGITUDINAL AXIS, FLUID INJECTOR MEANS INCLUDING A HOLLOW NEEDLE SUPPORTED FOR AXIAL MOVEMENT ADJACENT SAID OPPOSITE END OF THE MOLD CAVITY, AND ACTUATING MEANS FOR EFFECTING BACK AND FORTH AXIAL SHIFTING MOVEMENT OF SAID NEEDLE, SAID ACTUATING MEANS INCLUDING SNAP ACTION SPRING MEANS FOR PROJECTING THE NEEDLE FORCIBLY THROUGH SAID END OPENING IN THE MOLD WHEREBY TO PIERCE THE COLLAPSED TUBULAR MATERIAL AT SAID OPPOSITE END OF THE MOLD CAVITY FOR INTRODUCING AN EXPANDING FLUID.
Claim 2
Dependent Claim
182 words
IN AN APPARATUS FOR MAKING HOLLOW PLASTIC ARTICLES, A SECTIONAL MOLD COMPRISING A PAIR OF COMPLEMENTARY MOLD HALVES ADAPTED TO BE OPENED AND CLOSED AND DEFINING A MOLD CAVITY HAVING A LOGITUDINAL AXIS ADAPTED TO RECEIVE AN ELONGATED TUBULAR LENGTH OF SOFTENED PLASTIC MATERIAL, MEANS ON SAID MOLD HALVES ADJACENT ONE END OF THE MOLD CAVITY FOR COLLAPSING AND SEALING THE TUBULAR PLASTIC MATERIAL WHEN THE MOLD IS CLOSED, JAW MEANS ON SAID MOLD HALVES AT THE OPPOSITE END OF THE MOLD CAVITY FOR COLLAPSING THE TUBULAR MATERIAL, SAID JAW MEANS PROVIDING IN THE CLOSED POSITION OF THE MOLD AN END OPENING IN THE MOLD ON SAID LONGITUDINAL AXIS, FLUID INJECTOR MEANS INCLUDING A HOLLOW NEEDLE SUPPORTED FOR AXIAL MOVEMENT ADJACENT SAID OPPOSITE END OF THE MOLD CAVITY, AND ACTUATING MEANS FOR EFFECTING BACK AND FORTH AXIAL SHIFTING MOVEMENT OF SAID NEEDLE, SAID ACTUATING MEANS INCLUDING SNAP ACTION SPRING MEANS FOR PROJECTING THE NEEDLE FORCIBLY THROUGH SAID END OPENING IN THE MOLD WHEREBY TO PIERCE THE COLLAPSED TUBULAR MATERIAL AT SAID OPPOSITE END OF THE MOLD CAVITY FOR INTRODUCING AN EXPANDING FLUID.
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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) | 1959-06-19 | 1959-12-19 | 1960-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-19 | 1963-12-19 | 1964-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-19 | 1967-12-19 | 1968-06-19 | $7700.00 | Window Closed / Lapsed |