US3581364A
Expired / Lapsed
US
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Method of molding a plastic valve body
Assignee: Gad-Jets Inc
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Filing: 1969-05-26
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Granted: 1971-06-01
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Expires: 1989-05-26
Abstract
Abstract A MANDREL HAVING EXTERNAL THREADS AND AN INNER END PORTION WITH AN OPENING EXTENDING THERETHROUGH AND CONFORMING TO THE CONFIGURATION OF A VALVE SEAT IS POSITIONED IN A MOLD CAVITY. A SMALL TUBE IS POSITIONED IN SPACE RELAT2ON TO THE MANDREL IN ALIGNMENT WITH THE OPENING IN THE MANDREL AND A WIRE IS EXTENDED THROUGH THE CAVITY, TUBE, AND OPENING IN THE MANDRE. THE MOLD CAVITY IS FILLED WITH PLASTIC MANDREL TO FORM A VALVE BODY ABOUT THE MANDREL, TUBE, AND WIRE. AFTER THE PLASTIC MATERIAL HAS CURED, THE WIRE AND MANDREL ARE REMOVED AND AN ADJUSTABLE VALVE MEMBER IS INSERTED INTO THE CHAMBER FORMED BY THE MANDREL. A PLURALITY OF SUCH CHAMBERS MAY BE FORMED IN THE VALVE BODY.
Inventors
- 👤 Harold G Wyse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:56
CPC Classifications
B; B29; B29D; B29D1/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412; Y10T29/49416; Y10T29/49417
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |