Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – Female mold type means
Patent
1991-08-23
1993-08-17
Nguyen, Khanh P.
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
Female mold type means
249 93, 264275, 425262, B28B 2114, B28B 2156
Patent
active
052363228
ABSTRACT:
A concrete pipe making machine having a vibrating core and counter-rotating roller head is used to form a concrete pipe within a form. A concrete pipe reinforcing cage located within the form is held in spaced relation relative thereto with a plurality of cage positioners. Each cage positioner has a moveable blade connected to a piston and cylinder assembly operable to move the blade to a cage holding position and a blade retracted position out of engagement with the cage. The piston and cylinder assembly has a cylinder with a internal chamber having a rectangular cross section. A rectangular piston within the chamber is secured directly to the blade.
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International Pipe Machinery Corporation
Nguyen Khanh P.
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