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US2993822A Expired / Lapsed US ⏱️ 0.0 years remaining

Reinforced plastic molding process

Assignee: Individual
•
Filing: 1957-05-23
•
Granted: 1961-07-25
•
Expires: 1977-05-23
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Abstract

No abstract record available.

Inventors

  • 👤 John F Reeves

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 10:28
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/28; Y; Y10; Y10S; Y10S264/00; Y10S264/53

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 174 words
A PROCESS FOR MOLDING IN A MOLD ASSEMBLY HAVING A LOWER MOLD FORMING AN UPWARDLY OPEN CAVITY AND A MOVABLE UPPER MOLD WHICH MAY BE INSERTED AND MOVED DOWNWARDLY INTO SAID CAVITY TO A PREDETERMINED FINAL CLOSED POSITION DEFINING A MOLDING ENCLOSURE SPACE HAVING INTERSPACED WALL-LIKE PORTIONS EXTENDING UPWARDLY AND OPENING TO THE ATMOSPHERE, SAID PROCESS INCLUDING PLACING MOLDING COMPONENTS INCLUDING FLEXIBLE COMPRESSIBLE POROUS MATERIAL INTO SAID CAVITY, MOVING SAID UPPER MOLD INTO SAID CAVITY TO CONFINE SAID POROUS MATERIAL, STOPPING SAID MOVEMENT OF THE UPPER MOLD AT A FIRST POSITION WHICH IS SLIGHTLY ABOVE FINAL CLOSED POSITION TO SUBSTANTIALLY AVOID COMPRESSION OF SAID POROUS MATERIAL, THEREAFTER FILLING SAID SPACE WITH A FREE FLOWING LIQUID PLASTIC, ALLOWING SAID PLASTIC LIQUID TO SEEK ITS OWN LEVEL BY GRAVITY IN SAID SPACE TO FILL SAID SPACE AND IMPREGNATE SAID POROUS MATERIAL, AND MAINTAINING SAID UPPER MOLD COMPLETED, AND THEN MOVING SAID UPPER MOLD TO A SECOND POSITION WHICH IS SAID FINAL CLOSED POSITION WHERE SAID SPACE IS REDUCED IN VOLUME, AND ALLOWING SAID PLASTIC TO HARDEN.
Claim 2
Dependent Claim 174 words
A PROCESS FOR MOLDING IN A MOLD ASSEMBLY HAVING A LOWER MOLD FORMING AN UPWARDLY OPEN CAVITY AND A MOVABLE UPPER MOLD WHICH MAY BE INSERTED AND MOVED DOWNWARDLY INTO SAID CAVITY TO A PREDETERMINED FINAL CLOSED POSITION DEFINING A MOLDING ENCLOSURE SPACE HAVING INTERSPACED WALL-LIKE PORTIONS EXTENDING UPWARDLY AND OPENING TO THE ATMOSPHERE, SAID PROCESS INCLUDING PLACING MOLDING COMPONENTS INCLUDING FLEXIBLE COMPRESSIBLE POROUS MATERIAL INTO SAID CAVITY, MOVING SAID UPPER MOLD INTO SAID CAVITY TO CONFINE SAID POROUS MATERIAL, STOPPING SAID MOVEMENT OF THE UPPER MOLD AT A FIRST POSITION WHICH IS SLIGHTLY ABOVE FINAL CLOSED POSITION TO SUBSTANTIALLY AVOID COMPRESSION OF SAID POROUS MATERIAL, THEREAFTER FILLING SAID SPACE WITH A FREE FLOWING LIQUID PLASTIC, ALLOWING SAID PLASTIC LIQUID TO SEEK ITS OWN LEVEL BY GRAVITY IN SAID SPACE TO FILL SAID SPACE AND IMPREGNATE SAID POROUS MATERIAL, AND MAINTAINING SAID UPPER MOLD COMPLETED, AND THEN MOVING SAID UPPER MOLD TO A SECOND POSITION WHICH IS SAID FINAL CLOSED POSITION WHERE SAID SPACE IS REDUCED IN VOLUME, AND ALLOWING SAID PLASTIC TO HARDEN.

References Cited (Backward Citations)

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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) 1964-07-24 1965-01-23 1965-07-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1968-07-24 1969-01-23 1969-07-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1972-07-24 1973-01-23 1973-07-25 $7700.00 Window Closed / Lapsed

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