The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 19, 2021
Filed:
Aug. 30, 2017
Sekisui Chemical Co., Ltd., Osaka, JP;
Hiroshi Sugahara, Shiga, JP;
Tatsurou Baba, Shiga, JP;
Naoya Tsuda, Shiga, JP;
Masahiro Yamasaki, Tokyo, JP;
SEKISUI CHEMICAL CO., LTD., Osaka, JP;
Abstract
A pipe-forming apparatus with which a spiral pipe can be formed using a simple configuration without an inner periphery restriction body. A driving part () of a pipe-forming apparatus () presses a following strip portion () toward a pipe end portion () of a preceding spiral pipe portion () obliquely with respect to a machine-height direction HD. A pipe end guide is constrained in a machine-width direction WD with respect to the pipe end portion, and slidably engaged in a propelling longitudinal direction LD. A pressing force for the following strip portion provides a fitting force between the following strip portion and the pipe end portion, and a propelling force for forward propulsion. A pipe is formed in a state where a part other than a partial part at which the pipe-forming apparatus is provided in a circumferential direction of the pipe end portion is released from the pipe-forming apparatus.