US3254371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injection-molding machine
Assignee: Husky Manufacturing and Tool Works Ltd
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Filing: 1963-11-01
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Granted: 1966-06-07
•
Expires: 1983-11-01
Abstract
No abstract record available.
Inventors
- 👤 Rees Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:10
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/03; B29C45/17; B29C45/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
IN AN INJECTION-MOLDING MACHINE, IN COMBINATION, A MOLD COMPRISING A RECIPROCABLE FIRST PORTION AND A SUBSTANTIALLY STATIONARY SECOND PORTION DEFINING AT LEAST ONE CAVITY BETWEEN THEM, SAID SECOND PORTION BEING PROVIDED WITH AN INJECTION PASSAGE TERMINATING AT SAID CAVITY; SUPPLY MEANS FOR MOLDABLE PLASTIC MATERIAL FORMING A SUPPLY CHANNEL AND A COMPRESSION CHAMBER COMMUNICATING THEREWITH, SAID CHAMBER HAVING AN OUTLET ALIGNED WITH SAID PASSAGE; FEED MEANS INCLUDING A ROTATABLE FEED SCREW IN SAID CHANNEL AND A RECIPROCABLE PISTON IN SAID CHAMBER OPERABLE TO INJECT A FLUID MASS OF SAID PLASTIC MATERIAL FROM SAID CHAMBER THROUGH SAID PASSAGE INTO SAID CAVITY, SAID FEED SCREW BEING PROVIDED WITH BIASING MEANS URGING IT FORWARDLY IN SAID CHAMBER AND BEING AXIALLY RETRACTABLE IN RESPONSE TO REACTION PRESSURE FROM SAID PLASTIC MATERIAL AGAINST THE FORCE OF SAID BIASING MEANS; FIRST DRIVE MEANS FOR INTERMITTENTLY OPERATING SAID FEED MEANS BY RECIPROCATING SAID PISTON; SECOND DRIVE MEANS FOR ALTERNATELY ADVANCING SAID FIRST PORTION INTO CONTACT WITH SAID SECOND PORTION AND WITHDRAWING IT THEREFROM IN TIMED RELATIONSHIP WITH SAID FEED MEANS WHEREBY SAID MOLD IS
Claim 2
Dependent Claim
177 words
IN AN INJECTION-MOLDING MACHINE, IN COMBINATION, A MOLD COMPRISING A RECIPROCABLE FIRST PORTION AND A SUBSTANTIALLY STATIONARY SECOND PORTION DEFINING AT LEAST ONE CAVITY BETWEEN THEM, SAID SECOND PORTION BEING PROVIDED WITH AN INJECTION PASSAGE TERMINATING AT SAID CAVITY; SUPPLY MEANS FOR MOLDABLE PLASTIC MATERIAL FORMING A SUPPLY CHANNEL AND A COMPRESSION CHAMBER COMMUNICATING THEREWITH, SAID CHAMBER HAVING AN OUTLET ALIGNED WITH SAID PASSAGE; FEED MEANS INCLUDING A ROTATABLE FEED SCREW IN SAID CHANNEL AND A RECIPROCABLE PISTON IN SAID CHAMBER OPERABLE TO INJECT A FLUID MASS OF SAID PLASTIC MATERIAL FROM SAID CHAMBER THROUGH SAID PASSAGE INTO SAID CAVITY, SAID FEED SCREW BEING PROVIDED WITH BIASING MEANS URGING IT FORWARDLY IN SAID CHAMBER AND BEING AXIALLY RETRACTABLE IN RESPONSE TO REACTION PRESSURE FROM SAID PLASTIC MATERIAL AGAINST THE FORCE OF SAID BIASING MEANS; FIRST DRIVE MEANS FOR INTERMITTENTLY OPERATING SAID FEED MEANS BY RECIPROCATING SAID PISTON; SECOND DRIVE MEANS FOR ALTERNATELY ADVANCING SAID FIRST PORTION INTO CONTACT WITH SAID SECOND PORTION AND WITHDRAWING IT THEREFROM IN TIMED RELATIONSHIP WITH SAID FEED MEANS WHEREBY SAID MOLD IS
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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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |