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:
Aug. 28, 2018
Filed:
Dec. 10, 2014
Ntn Corporation, Osaka, JP;
Takuya Ishii, Mie, JP;
Hajime Asada, Mie, JP;
NTN CORPORATION, Osaka, JP;
Abstract
An internal gear pump integrally provided with a plain bearing requiring fewer machining steps, allowing inexpensive manufacture, and offering a highly stable seizing property. The internal gear pump has a trochoid (), in which an inner rotor () having a plurality of outer teeth is eccentrically and rotatably accommodated in an outer rotor () having a plurality of inner teeth, the outer teeth meshing with the inner teeth, and in which a suction-side chamber for suctioning liquid and a discharge-side chamber for discharging the liquid that has been suctioned into the suction-side chamber are formed between the inner teeth and outer teeth; a drive shaft () fixed to the inner rotor (); a casing () in which is formed a recess () for accommodating the trochoid (); and a cover () for closing off the recess () of the casing ().