Claims
- 1. An injection molding machine utilizing a plasticizer, at least one mold for receiving plasticized material from the plasticizer, and at least one flow channel between the plasticizer and the at least one mold, the injection molding machine comprising,
a plurality of gear pumps fluidly connected in series in the flow channel between the plasticizer and the at least one mold, the gear pumps being powered to increase the pressure of the plasticized material moving through the flow channel.
- 2. The injection molding machine of claim 1 wherein the plasticizer comprises a reciprocating screw.
- 3. An injection molding machine utilizing a plasticizer, at least one mold for receiving plasticized material from the plasticizer, and at least one flow channel between the plasticizer and the at least one mold, the injection molding machine comprising,
a plurality of gear pumps fluidly connected in the flow channel between the plasticizer and the at least one mold and braking means connected to at least one of said gear pumps, said braking means adapted to momentarily retard the connected gear pump during the molding process.
Parent Case Info
[0001] Claim is made to provisional patent application Serial No. 60/013,879 filed Mar. 22, 1996. This application is a continuation of application Ser. No. 09/237,738, filed Jan. 26, 1999, in turn a continuation-in-part of application Ser. No. 08/821,615, filed Mar. 20, 1997, now U.S. Pat. No. 5,863,485.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60013879 |
Mar 1996 |
US |
Continuations (1)
|
Number |
Date |
Country |
Parent |
09237738 |
Jan 1999 |
US |
Child |
09953089 |
Sep 2001 |
US |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
08821615 |
Mar 1997 |
US |
Child |
09237738 |
Jan 1999 |
US |