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. 24, 2005
Filed:
Dec. 03, 2002
Nobukazu Ike, Anjo, JP;
Satoru Kasuya, Anjo, JP;
Masaaki Nishida, Anjo, JP;
Masahiro Hayabuchi, Anjo, JP;
Nobukazu Ike, Anjo, JP;
Satoru Kasuya, Anjo, JP;
Masaaki Nishida, Anjo, JP;
Masahiro Hayabuchi, Anjo, JP;
Aisin AW Co., Ltd., Aichi-ken, JP;
Abstract
A bottom portion of an intake port is provided with a sloped bottom surface formed of a plane such that sloped bottom surface approaches the side surfaces of external teeth and internal teeth from an upstream side to a downstream side in rotational direction of two rotors. Fluid that flows in the intake port is regulated by the sloped bottom surface and smoothly guided into individual inter-teeth chambers that are expanding. Since the sloped bottom surface on the bottom portion of the intake port is formed of a plane without spiral or twisting, design and manufacturing of a gear pump is extremely easy.