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:
Jun. 30, 1998
Filed:
Oct. 17, 1996
Aisan Kogyo Kabushiki Kaisha, Obu, JP;
Abstract
In a fuel pump unit including a substantially disc-like rotating impeller, a pump casing for accommodating the impeller, the pump casing having a pressurizing passage surrounding an outer peripheral edge of the impeller and extending along the outer peripheral edge from its upstream end to downstream end, an inlet hole communicating with the upstream end of the pressurizing passage, an outlet hole communicating with the downstream end of the pressurizing passage, and a partition wall formed at a range circumpherentially upstream of the upstream end and downstream of the downstream end of the pressurizing passage, the improvement comprises a cutout slot formed at an end of the partition wall facing the outlet hole, the width of the cutout slot in an axial direction being gradually reduced as the cutout slot extends from the end of the partition wall in a circumferentially downstream direction.