Title:
FILTER CLOTH ATTACHING STRUCTURE FOR FORM
Document Type and Number:
Japanese Patent JP3492322
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To solve such a problem that tension is applied to a filter cloth attached to a form by a rubber string or the like in order to remove air or excess moisture flowing out of cast concrete when a concrete secondary product is manufactured but the attaching position of the filter cloth is hard to change and the durability is lowered.
SOLUTION: In the form for manufacturing the concrete secondary product equipped with an outer form 1 and an inner form 2, a discharge means, which discharges air or excess moisture flowing out when concrete is cast in the form to be compacted, is provided to the inner form 2 and a locking means, which attaches the filter cloth 23 preventing concrete from flowing out of the form from the discharge means to the inner form 2 under tension and making the fixing position of at least one edge part of the filter cloth 23 to the inner form 2 relatively alterable and fixes one edge part of the filter cloth to the inner form 2 in a detachable manner, is provided.
Inventors:
Hideyuki Ohnishi
Imaeda Seiharu
Imaeda Seiharu
Application Number:
JP2001016373A
Publication Date:
February 03, 2004
Filing Date:
January 24, 2001
Export Citation:
Assignee:
Asahi Concrete Industry Co., Ltd.
International Classes:
B28B7/18; B28B21/86; (IPC1-7): B28B7/18; B28B21/86
Domestic Patent References:
| JP399804A | ||||
| JP10119025A | ||||
| JP712207U | ||||
| JP6131815U |
Attorney, Agent or Firm:
Kazuhiro Akazawa (1 person outside)