Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Positioning of a mold part to form a cavity or controlling...
Reexamination Certificate
2007-02-13
2007-02-13
Heitbrink, Jill L. (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Positioning of a mold part to form a cavity or controlling...
C264S328700, C264S328120, C425S150000
Reexamination Certificate
active
11030922
ABSTRACT:
During injection molding of a plastic product having a base wall and a sidewall, alignment of the mold parts that shape the mold cavity is maintained by conducting injected plastic material through a sequence of variable-opening throttles in a base-wall-section flow guide of the mold cavity. The openings of the throttles vary in response to variations in the thickness of a region of the sidewall section into which injected plastic material is conducted from the base-wall-section flow guide so that upon an increase in the thickness of such region the openings of the throttles in the base-wall-section flow guide decrease and so that upon a decrease in the thickness of such region the openings of the throttles in the base-wall-section flow guide increase.
REFERENCES:
patent: 3375554 (1968-04-01), Blumer
patent: 3397266 (1968-08-01), Ayres
patent: 3737272 (1973-06-01), Segmuller
patent: 3829548 (1974-08-01), Edwards
patent: 3882212 (1975-05-01), Edwards
patent: 3995008 (1976-11-01), Spiegelberg
patent: 4264295 (1981-04-01), Hingley
patent: 4332545 (1982-06-01), Cargile
patent: 4467994 (1984-08-01), Sorensen
patent: 4657141 (1987-04-01), Sorensen
patent: 4935188 (1990-06-01), Sorensen
patent: 4956143 (1990-09-01), McFarlane
patent: 4959005 (1990-09-01), Sorensen
patent: 4960557 (1990-10-01), Sorensen
patent: RE33608 (1991-06-01), Sorensen
patent: 5174941 (1992-12-01), Sorensen
patent: 5639487 (1997-06-01), Wurst et al.
patent: 5833913 (1998-11-01), Ellwood et al.
patent: 5972256 (1999-10-01), Wurst et al.
patent: 6841104 (2005-01-01), Brown et al.
patent: 6936213 (2005-08-01), Brown
patent: 117387 (1970-09-01), None
patent: 0 347 837 (1989-12-01), None
Brown Paul Philip
Sorensen Jens Ole
Callan Edward W.
Heitbrink Jill L.
Sorensen Research and Development Trust
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