Static molds – Container-type molding device – And an inner removable core to form recess or opening
Patent
1979-12-05
1981-01-06
Flint, Jr., J. Howard
Static molds
Container-type molding device
And an inner removable core to form recess or opening
249163, 249164, 425DIG5, 425DIG58, B29C 500
Patent
active
042431999
ABSTRACT:
Disclosed herein is a radially parted mold comprising a plurality of mold segments each having cavities that taken together define the shape of a propeller with a tapered hub when the mold segments are joined together along their parting surfaces. The parting surfaces include parting lines which run along the edge of the propeller blade. The edge of the propeller blade is the centerline of the blade (1/2 the thickness of the blade). There are the same number of mold segments as there are blades on the propeller and each mold segment has a first cavity defining the rear face of an adjacent propeller blade, a second cavity defining the rear face of an adjacent propeller blade, and a third cavity defining a portion of the propeller hub.
REFERENCES:
patent: 1543701 (1925-06-01), Dickey
patent: 1770368 (1930-07-01), Fahlman
patent: 1783285 (1930-12-01), Goodwin
patent: 2448640 (1948-09-01), Weston
patent: 2859478 (1958-11-01), Glasson
patent: 3136001 (1964-06-01), Gelbard
patent: 3724803 (1973-04-01), Goldfarb
patent: 3837612 (1974-09-01), Deters
patent: 4043385 (1977-08-01), Petrenchik
patent: 4047692 (1977-09-01), Savin
patent: 4133371 (1979-01-01), Birch et al.
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