Method and apparatus for forming an internally screw-threaded ar

Details Method and apparatus for forming an internally screw-threaded ar Method and apparatus for forming an internally screw-threaded ar

1984-08-10

1987-01-06

Godici, Nicholas P.

Metal founding

Process

Shaping liquid metal against a forming surface

164132, 164137, 164340, 164346, 249 59, B22D 2900, B22D 1724

Patent

active

046339329

ABSTRACT:
A method of casting or moulding an article having an internally screw-threaded hole comprises introducing casting or moulding material into a mould cavity around a core pin formed with segments of a screw thread separated by flutes and also around withdrawable flat core members projecting into the mould cavity with their leading ends fitting snugly into the flutes. The segments of screw thread form the male image of segments of the required female thread. When the casting or moulding material has set first the core members are withdrawn from the mould cavity then the core pin is rotated to bring the screw-threaded segments into the positions formerly occupied by the flutes and the pin is withdrawn axially from the mould cavity. Finally the article is removed from the mould cavity.

REFERENCES:
patent: 3057014 (1962-10-01), Kirch
patent: 4090687 (1978-05-01), Langhammer et al.
patent: 4188178 (1980-02-01), Anscher

Affiliated with

Also associated with

Rating

Method and apparatus for forming an internally screw-threaded ar does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for forming an internally screw-threaded ar, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for forming an internally screw-threaded ar will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-677332