US3224037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for molding foamable thermoplastic particulate material
Assignee: Crown Machine and Tool Co Inc
•
Filing: 1963-02-01
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Granted: 1965-12-21
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Expires: 1983-02-01
Abstract
No abstract record available.
Inventors
- 👤 Roscoe S Robbins
- 👤 Winston T Palmer
- 👤 Jr James F Newell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:45
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/36; B29C44/38; B29C44/44; B29C44/445; B29C44/3415; B29C44/3426; B29L; B29L2031/00; B29L2031/712; B29L2031/7132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
AN APPARATUS FOR MOLDING FOAMABLE THERMOPLASTIC BEADS INTO UNITARY OBJECTS COMPRISING AT LEAST A PAIF OF COMPLEMENTARY MOLD PARTS, INCLUDING CAVITY AND CORE ELEMENTS DEFINING BETWEEN THEM A GENERALLY FRUSTO-CONICAL CUP-SHAPED MOLDING CAVITY AND BEING MOVABLE FROM AN OPEN TO A CLOSED POSITION, MEANS IN COMMUNICATION WITH ONE OF SAID MOLD PARTS TO FILL THE CUP-SHAPED MOLDING CAVITY SO DEFINED WITH FOAMABLE PLASTIC BEADS WHEN SAID PARTS ARE IN COOPERATING CAVITY DEFINING RELATIONSHIP, GENERALLY EQUALLY CIRCUMFERENTIALLY SPACED AXIALLY EXTENDED ELONGATED SLOTS IN THE MOLDING SURFACE OF AT LEAST ONE OF THE MOLD PARTS, AND MEANS FOR SUPPLYING STEAM TO THE SLOTS DURING MOLDING SO THAT THE STEAM WILL INTIMATELY MIX WITH THE FOAMABLE BEADS IN THE MOLDING CAVITY.
Claim 2
Independent Claim
118 words
AN APPARATUS FOR MOLDING FOAMABLE THERMOPLASTIC BEADS INTO UNITARY OBJECTS COMPRISING AT LEAST A PAIF OF COMPLEMENTARY MOLD PARTS, INCLUDING CAVITY AND CORE ELEMENTS DEFINING BETWEEN THEM A GENERALLY FRUSTO-CONICAL CUP-SHAPED MOLDING CAVITY AND BEING MOVABLE FROM AN OPEN TO A CLOSED POSITION, MEANS IN COMMUNICATION WITH ONE OF SAID MOLD PARTS TO FILL THE CUP-SHAPED MOLDING CAVITY SO DEFINED WITH FOAMABLE PLASTIC BEADS WHEN SAID PARTS ARE IN COOPERATING CAVITY DEFINING RELATIONSHIP, GENERALLY EQUALLY CIRCUMFERENTIALLY SPACED AXIALLY EXTENDED ELONGATED SLOTS IN THE MOLDING SURFACE OF AT LEAST ONE OF THE MOLD PARTS, AND MEANS FOR SUPPLYING STEAM TO THE SLOTS DURING MOLDING SO THAT THE STEAM WILL INTIMATELY MIX WITH THE FOAMABLE BEADS IN THE MOLDING CAVITY.
References Cited (Backward Citations)
US357639A
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US2828509A
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US3125780A
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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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |