US3438393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Improved Machinery Inc
•
Filing: 1966-07-20
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Granted: 1969-04-15
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Expires: 1986-07-20
Abstract
No abstract record available.
Inventors
- 👤 Philip Godley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:17
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/46; B29C45/47; B29C45/50; B29C45/52; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/7913
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
IN INJECTION MOLDING APPARATUS FOR THERMOPLASTIC MATERIAL, A CHECK VALVE, COMPRISING: A MAIN VALVE BODY HAVING A FIRST SEALING PORTION, A MOVABLE MEMBER HAVING A STOP PORTION AND SECOND SEALING PORTION, SAID MOVABLE MEMBER BEING MOVABLE BETWEEN A FIRST POSITION IN WHICH SAID SEALING PORTIONS COOPERATE TO PREVENT THE FLOW OF THERMOPLASTIC MATERIAL PAST SAID MOVABLE MEMBER, AND A SECOND POSITION IN WHICH SAID SEALING PORTIONS ARE SPACED TO ALLOW FLOW OF THERMOPLASTIC MATERIAL PAST SAID MOVABLE MEMBER, A RETURNING MEMBER LOCATED IN THE PATH OF SAID STOP PORTION, AND SPACED FROM THE POSITION OF SAID STOP PORTION CORRESPONDING TO SAID FIRST POSITION OF SAID MOVABLE MEMBER IN THE DIRECTION OF THE POSITION OF SAID STOP PORTION CORRESPONDING TO SAID SECOND POSITION OF SAID MOVABLE MEMBER, SAID RETAINING MEMBER THEREBY COOPERATING WITH SAID STOP PORTION TO PREVENT MOVEMENT OF SAID MOVABLE MEMBER AWAY FROM SAID FIRST POSITION BEYOND SAID SECOND POSITION, AND
Claim 2
Dependent Claim
152 words
IN INJECTION MOLDING APPARATUS FOR THERMOPLASTIC MATERIAL, A CHECK VALVE, COMPRISING: A MAIN VALVE BODY HAVING A FIRST SEALING PORTION, A MOVABLE MEMBER HAVING A STOP PORTION AND SECOND SEALING PORTION, SAID MOVABLE MEMBER BEING MOVABLE BETWEEN A FIRST POSITION IN WHICH SAID SEALING PORTIONS COOPERATE TO PREVENT THE FLOW OF THERMOPLASTIC MATERIAL PAST SAID MOVABLE MEMBER, AND A SECOND POSITION IN WHICH SAID SEALING PORTIONS ARE SPACED TO ALLOW FLOW OF THERMOPLASTIC MATERIAL PAST SAID MOVABLE MEMBER, A RETURNING MEMBER LOCATED IN THE PATH OF SAID STOP PORTION, AND SPACED FROM THE POSITION OF SAID STOP PORTION CORRESPONDING TO SAID FIRST POSITION OF SAID MOVABLE MEMBER IN THE DIRECTION OF THE POSITION OF SAID STOP PORTION CORRESPONDING TO SAID SECOND POSITION OF SAID MOVABLE MEMBER, SAID RETAINING MEMBER THEREBY COOPERATING WITH SAID STOP PORTION TO PREVENT MOVEMENT OF SAID MOVABLE MEMBER AWAY FROM SAID FIRST POSITION BEYOND SAID SECOND POSITION, AND
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US1061069A
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US1220944A
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US1640408A
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US2310902A
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US2755816A
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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) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |