Title:
COLLAPSED TUBE, MANUFACTURE THEREOF AND MANUFACTURING IMPLEMENT THEREOF
Document Type and Number:
Japanese Patent JPH05180591
Kind Code:
A
Abstract:
PURPOSE: To obtain a method for closing a conduit or forming an orifice by partly collapsing a tube without rupture in a tube of a collapsed produce, a method for manufacturing the same and its manufacturing implement.
CONSTITUTION: This method forms a collapsing part 42 and a guiding part 43 having a smoothly curved surface continued to the vicinity of its shoulder at a pressing tool 40 for collapsing. A material is guided toward a position collapsed by the part 42 while collapsing the lateral center of the tube by the part 42.
Inventors:
KATAOKA HIROMI
Application Number:
JP35917891A
Publication Date:
July 23, 1993
Filing Date:
December 27, 1991
Export Citation:
Assignee:
KATAOKA HIROMI
International Classes:
B21C37/29; B21D53/06; B21J5/06; F16L39/00; F28D1/053; F28F9/02; (IPC1-7): B21C37/29; B21D53/06; B21J5/06; F16L39/00; F28F9/02
Attorney, Agent or Firm:
Takahiko Higashiyama