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:
Apr. 26, 2022
Filed:
Nov. 06, 2018
Nippon Pillar Packing Co., Ltd., Osaka, JP;
Kazukiyo Teshima, Osaka, JP;
Daisuke Urata, Osaka, JP;
NIPPON PILLAR PACKING CO., LTD., Osaka, JP;
Abstract
A rolling diaphragm pump that can inhibit an increase in cost with a simple configuration is provided. A rolling diaphragm pumpincludes: a housing; a pistondisposed so as to be slidable relative to an inner peripheral surface of the housingand reciprocatable in an axial direction; a rolling diaphragmhaving a movable portiondisposed at one end portion in the axial direction of the pistonand reciprocatable together with the piston, a fixed portionfixed to the housing, and a flexible connecting portionconnecting the movable portionand the fixed portionto each other; a pump chamberdefined by the rolling diaphragmat one side in the axial direction within the housingand into and from which a transport fluid is sucked and discharged by changing a volume of an interior of the pump chamberby deformation of the connecting portiondue to reciprocation of the piston; and a working fluid chamberdefined by another end portion in the axial direction of the pistonat another side in the axial direction within the housingand into and from which a working fluid is supplied and discharged, thereby causing the pistonto reciprocate.