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1. 发明专利

JPH06315723A SPACER AND METHOD FOR TUBE BENDING 失效
公开(公告)号：JPH06315723A
公开(公告)日：1994-11-15
申请号：JP13289793
申请日：1993-05-10
申请人： INOUE MTP KK
发明人： OHASHI MICHIYO , SANO YUTAKA
IPC分类号： B21D9/01
摘要： PURPOSE:To smoothly bend a tube without flattening or crushing a tube by the light weight and inexpensive spacer and to protect the part. CONSTITUTION:An inserting part 1 is composed of a bar like member having the flexibility, a tube bending spacer A formed with a recessed groove 11 along the longitudinal direction on the surface of the inserting part 1 is used, the inserting part 1 is inserted into a tube 3, after bending the tube 3 in a required shape while being inserted, and a grip part 2 of the spacer A is gripped and drawn from the tube 3.

2. 发明专利

JPH06335730A SPACER FOR BENDING PIPE AND METHOD FOR BENDING PIPE 失效
公开(公告)号：JPH06335730A
公开(公告)日：1994-12-06
申请号：JP15160093
申请日：1993-05-27
申请人： INOUE MTP KK
发明人： OHASHI MICHIYO , SANO YUTAKA
IPC分类号： B21D9/03
摘要： PURPOSE:To provide the inexpensive method capable of smoothly bending a pipe and protecting the bent part without flattering or crushing the pipe by using a spacer having an insertion part formed in a row of spherical bodies. CONSTITUTION:When a pipe 3 is bent while the spacer for bending the pipe is inserted into the pipe 3 such as a copper pipe as it is, it can be bent easily and flexibly into shape such as a desired bend or elbow, because the insertion part 1 is constituted of a row of tied spherical bodies 11. On the other hand, since many tied spherical bodies 11 having a diameter nearly the same as the inside diameter of the pipe 3 are arranged in the pipe 3, crushing of the pipe diameter is prevented surely from the inner part. Since the space for bending the pipe has a construction light in weight, excellent in workability, low in cost when it is made of synthetic resin, etc., the spacer can be left inserted into the pipe as it is under construction. When this spacer is left inserted into the pipe as it is, the insertion part 1 serves as a protector to prevent the pipe 3 from being flattened, crushed, etc.

3. 发明专利

JPH06335729A SPACER FOR BENDING PIPE AND METHOD FOR BENDING PIPE 失效
公开(公告)号：JPH06335729A
公开(公告)日：1994-12-06
申请号：JP15160193
申请日：1993-05-27
申请人： INOUE MTP KK
发明人： OHASHI MICHIYO , SANO YUTAKA
IPC分类号： B21D9/01
摘要： PURPOSE:To provide the inexpensive method capable of smoothly bending a pipe and protecting the bent part light in weight without flattening or crushing the pipe by forming an insertion part to which plural flexible bar-like materials are inserted in a bundle. CONSTITUTION:When a pipe 3 is bent while a spacer for bending the pipe is inserted into the pipe 3 such as a copper pipe as it is, it can be bent easily into a shape such as a desired vent or elbow. Since an individual bundled bar- like material 11 works separately in accordance with the bent shape of the pipe 3, the resistance caused by inserting the spacer for bending the pipe can be reduced. On the other hand, since the insertion part 1 having a diameter nearly the same as the inside diameter of the pipe made by bundling the bar-like materials 11 is inserted into the pipe, crushing of the pipe diameter is prevented surely from the inner part. Since the spacer for bending the pipe is made of synthetic resin, etc., and light in weight and excellent in workability in construction, it can be left inserted into the pipe 3 as it is under construction and the insertion part 1 serves as a protector.

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