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:
Mar. 04, 2008
Filed:
May. 09, 2002
Shinji Okuda, Hyogo-ken, JP;
Masaharu Takada, Osaka, JP;
Yasuyuki Yoshimoto, Hyogo-ken, JP;
Sunstar Giken Kabushiki Kaisha, Osaka, JP;
Sunstar Suisse SA, Ecublens, CH;
Abstract
A piston pump has a piston and cylinder. A gas is supplied into the cylinder during and/or after a suction stroke of the piston pump, and a high-viscosity material is supplied into the cylinder after the suction stroke. A discharge stroke of the piston pump is effected after completion of supply of the high-viscosity material to thereby discharge the gas and high-viscosity material into a pipe. Use is made of piston pumpsA andB, each including a cylinder and a piston which reciprocally moves within the cylinder to effect the suction stroke and discharge stroke, and a membrane gas generatorto which compressed air is supplied to generate a gas. A low-pressure gas generated by the membrane gas generatoris supplied into each piston pump and the high-viscosity material is introduced into the gas.