Title:
【発明の名称】アンダ-カツトされた内面を有する物品の製造
Document Type and Number:
Japanese Patent JPS59501857
Kind Code:
A
Abstract:
PCT No. PCT/GB83/00245 Sec. 371 Date May 10, 1984 Sec. 102(e) Date May 10, 1984 PCT Filed Oct. 3, 1983 PCT Pub. No. WO84/01529 PCT Pub. Date Apr. 26, 1984.A tool for use in manufacture of a hollow article with an undercut internal surface, such as the outer member of a constant velocity ratio universal joint, comprising first and second elements (34,38) together defining the shape required in the article interior and an internal cavity (40). An expander (23) fits in the cavity to hold the elements in their operative positions, and the first elements have parallel or outwardly convergent sides which enable their inward movement between the second elements after withdrawal of the expander from the cavity. After such inward movement, the first elements can be withdrawn from the shaped article, followed by the second elements.
Inventors:
Langhud-de Edwards Alfredos
Neil Reginald Leslie-
Moden Jiefrey Allen
Neil Reginald Leslie-
Moden Jiefrey Allen
Application Number:
JP50317183A
Publication Date:
November 08, 1984
Filing Date:
October 03, 1983
Export Citation:
Assignee:
F-Day Limited
International Classes:
B21D22/00; B21J5/12; B21K1/14; B21J13/02; B21K1/76; F16D3/22; (IPC1-7): B21J13/02; B21K1/14; F16D3/22
Domestic Patent References:
| JPS5791837A | 1982-06-08 | |||
| JPS5762831A | 1982-04-16 | |||
| JPS57181737A | 1982-11-09 |
Attorney, Agent or Firm:
Kiyotaka Sasaki