Destructible core for undercut casting

Details Destructible core for undercut casting Destructible core for undercut casting

1991-07-26

1994-05-10

Woo, Jay H.

Static molds

Including destructible feature

249175, 425DIG15, 425DIG43, 264 31, C06B 2100

Patent

active

053101596

ABSTRACT:
Destructible cores useful particularly for shaping the internal channels of cast propellant blocks. The cores include at least one elongated element which is shaped, for example by winding, the cohesion of which is ensured by way of a joining material and a portion of which is accessible from the exterior of the component to be cast. In order to obtain quickly cores having a high rigidity, the shaped element is a band which includes interlaced wires having free spaces, the joining material filling the free spaces.

REFERENCES:
patent: 454939 (1891-06-01), Chenoweth
patent: 2045556 (1936-06-01), Almen
patent: 2343292 (1944-03-01), Greneker
patent: 2364710 (1944-12-01), Greneker
patent: 3120028 (1964-02-01), Streeter et al.
patent: 3136002 (1964-06-01), Schwartz
patent: 3345438 (1967-10-01), Carey
patent: 3524618 (1970-08-01), Collman et al.
patent: 3952627 (1976-04-01), Gardiner et al.
Patent Abstracts of Japan, vol. 4, No. 143, Oct. 3, 1980 (Abstract of 55-97844).

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