Metal founding – Process – Shaping a forming surface
Patent
1980-03-13
1981-10-13
Baldwin, Robert D.
Metal founding
Process
Shaping a forming surface
164248, B22C 700, B22C 902
Patent
active
042943035
ABSTRACT:
A sand core pattern (11) for producing a one-piece cast wheel (10) having a radially inner shell (12), a radially outer blade support (13), and a plurality of angled blades (14) extending in a spaced, annular array (22). The pattern includes a plurality of similar segments (15), each having an inner end portion (18) defining a portion of the profile of the shell, and an outer end portion (21) defining the profile of the blade. The segments are supported in annular array about a mandrel (25) and are circumscribed by a split ring (26) defining the pattern for the outer blade support portion of the wheel (10). The inner portions of the segments are defined by angled side surfaces (16,17) which, in alternate ones of the segments in the annular array, converge and diverge toward the center of the array. Upon completion of the forming of the sand mold about the pattern, the mandrel and outer ring are removed, permitting the segments having the inwardly diverging side faces to be withdrawn inwardly from the array and permit the remaining segments then to be withdrawn inwardly therefrom.
REFERENCES:
patent: 118693 (1871-09-01), Cornell
patent: 3247548 (1966-04-01), Fields et al.
patent: 4043385 (1977-08-01), Petrenchik
patent: 4231413 (1980-11-01), Bretzger
Baldwin Robert D.
Caterpillar Tractor Co.
LandOfFree
Sand core pattern and method of forming a sand mold does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sand core pattern and method of forming a sand mold, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sand core pattern and method of forming a sand mold will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-926238