Title:
FORM FOR MOLDING CYLINDRICAL CONCRETE PRODUCT
Document Type and Number:
Japanese Patent JP3706096
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a form for molding a cylindrical concrete product, which makes the demolding work or assembling of an inner mold easy and simple and has a new throttle mechanism of the inner mold requiring no special labor in cleaning work and also excellent in dimensional accuracy.
SOLUTION: The inner mold is vertically divided into four divided parts and a moving means for moving two opposed divided parts among the divided parts in inside and outside directions is provided while a moving means for moving at least one of two remaining divided parts in the inside and outside directions is further provided. Since the inner mold is divided into four and at least three divided parts among them are moved in the inside direction at the time of demolding, diametric contraction quantity can be increased. If a top plate for closing the upper opening of the inner mold is provided so as to be supported by the support members vertically provided on a pedestal, the cylindrical concrete product closed at one end thereof can be molded without requiring a draft angle.
Inventors:
Sato
Application Number:
JP2002278434A
Publication Date:
October 12, 2005
Filing Date:
September 25, 2002
Export Citation:
Assignee:
Toyota Koki Co., Ltd.
International Classes:
E02D29/12; B28B21/88; (IPC1-7): B28B21/88; E02D29/12
Domestic Patent References:
| JP20966C2 | ||||
| JP2117106U | ||||
| JP5029706U | ||||
| JP51000517A |
Attorney, Agent or Firm:
Kobe Makoto
Kayoko Kawabata
Kayoko Kawabata