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Class Information
Number: 425/381
Name: Plastic article or earthenware shaping or treating: apparatus > Stock pressurizing means operably associated with downstream shaping orifice > Including auxiliary shaping means (e.g., mandrel, etc.) associated with molding orifice > Movable orifice or movable mounted inner mandrel within orifice
Description: Apparatus which comprises (1) auxiliary shaping means (e.g., a shaping mandrel) movably mounted within the confines of the orifice means, or (2) means supporting an orifice means to provide movement thereof.

Patents under this class:
1 2 3 4 5 6 7 8 9

Patent Number Title Of Patent Date Issued
4029460 Flat film extrusion nozzle Jun. 14, 1977
4029458 Extrusion die Jun. 14, 1977
4025262 Variable length extrusion die May. 24, 1977
4022603 Device for manufacturing hollow profiled bodies by extrusion May. 10, 1977
4021170 Extruder with blow head May. 3, 1977
4011493 Servo-controller Mar. 8, 1977
4008036 Die assembly Feb. 15, 1977
4003690 Closure device Jan. 18, 1977
4003689 Die-gap adjusting means Jan. 18, 1977
3989433 Apparatus for controlling resistance to extrusion of a rod-like body through a die Nov. 2, 1976
3985490 Apparatus for extruding a homogeneous tubular length of soft thermoplastic material Oct. 12, 1976
3976414 Apparatus for the production of double-walled synthetic plastic tubes having a transversely corrugated outer wall and a smooth inner wall Aug. 24, 1976
3947201 Extruder and roll die apparatus Mar. 30, 1976
3944641 Process of forming an irregular surface on the inside of a tube or pipe Mar. 16, 1976
3940221 Thickness control system for an extrusion die Feb. 24, 1976
3932090 Adjustable extrusion apparatus for producing thread-like products Jan. 13, 1976
3932106 Injection molding head for forming honeycombed thermoplastic structures Jan. 13, 1976

1 2 3 4 5 6 7 8 9

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