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:
Jul. 27, 2010
Filed:
Jul. 30, 2007
Hisashi Harada, Toyokawa, JP;
Takuya Nitta, Toyokawa, JP;
Takashi Hanai, Toyokawa, JP;
Minoru Hirata, Toyokawa, JP;
Kozo Sugita, Toyokawa, JP;
Toshihiko Oya, Toyokawa, JP;
Hisashi Harada, Toyokawa, JP;
Takuya Nitta, Toyokawa, JP;
Takashi Hanai, Toyokawa, JP;
Minoru Hirata, Toyokawa, JP;
Kozo Sugita, Toyokawa, JP;
Toshihiko Oya, Toyokawa, JP;
Sintokogio Ltd., Aichi, JP;
Abstract
A sand-introducing device that uses air for introducing molding sand in a molding space or spaces is provided. The device is provided with air-permeable partitioning plates that define a double-walled structure together with the wall of the body of the device. The air-permeable partitioning plates are easily produced, they can easily inject pressurized air of a desired pressure, and they will not need regular maintenance. The body of the device, which acts as a pressure tank, defines a double-walled structure together with the air-permeable partitioning plates (), thereby defining chambers (). In the sand-introducing device that uses air, while molding sand is fluidized by pressurized air injected from the air-permeable partitioning plates, it is introduced in a molding space. Each air-permeable partitioning plate is made of a porous resin or metal.