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:
May. 11, 2010
Filed:
May. 02, 2005
Kenji Ogawa, Musashino, JP;
Kenji Ogawa, Musashino, JP;
Neuberg Company Limited, Tokyo, JP;
Abstract
A diaphragm pumphas a base block, a diaphragmand a drive unit for driving the diaphragm to reciprocate. The base blockhas three or more liquid flow paths, each having three recessesthroughor more recesses. The diaphragmand the respective recessesthroughdefine a plurality of valve chambers and the metering chamber. The drive unit includes: pressing rodsthrougharranged corresponding to the respective recesses with the diaphragm interposed therebetween; and a pressing member drive controller adapted to execute a liquid discharging operation and a liquid sucking operation at a predetermined timing defined for each of the pressing rods, in which in the liquid discharging operation, each of the pressing rods is moved toward the respective recesses so as to gradually decease the volume of the respective valve chambers and the metering chamber and eventually hermetically seal the metering chamber; while in the liquid discharging operation, each of the pressing rods is moved away from the respective recesses so as to gradually decease the volume of the respective valve chambers and the metering chamber.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile