公开(公告)号：US3610317A

公开(公告)日：1971-10-05

申请号：US3610317D

申请日：1969-04-11

Applicant: BENFIELD JAMES W ,  CHARLES BLECHNER

Inventor： BENFIELD JAMES W ,  BLECHNER CHARLES

IPC: B22C7/02 ,  B22C9/04 ,  B22C9/08 ,  B22D25/02

CPC classification number: B22D25/026 ,  B22C7/02 ,  B22C9/04 ,  B22C9/082 ,  Y10S164/04

Abstract: A crucible former for use in the production of metal castings by the ''''lost wax'''' process, which is formed of a thermoplastic material which volatilizes below the mold temperature for making the casting. A flange extends circumferentially about the bottom of the crucible former and interlocks with the bottom of the casting ring. A plurality of sprue pin apertures located symmetrically about the apex of the crucible former mount the sprue pins by means of a friction fit.

公开(公告)号：US3340923A

公开(公告)日：1967-09-12

申请号：US36889764

申请日：1964-05-20

Applicant: BENFIELD JAMES W

Inventor： BENFIELD JAMES W

IPC: A61C13/00 ,  B22C9/04 ,  B22D25/02

CPC classification number: B22C9/04 ,  A61C13/0003 ,  B22D25/026 ,  Y10S425/012

公开(公告)号：US2911722A

公开(公告)日：1959-11-10

申请号：US56780656

申请日：1956-02-27

Applicant: BENFIELD JAMES W ,  CHARLES BLECHNER

Inventor： BENFIELD JAMES W ,  CHARLES BLECHNER

IPC: A61C9/00

CPC classification number: A61C9/00