Title:
燃料ポンプ
Document Type and Number:
Japanese Patent JP4889432
Kind Code:
B2
Abstract:
A fuel pump has a casing and an impeller. The impeller is substantially disk shaped having an upper surface and a lower surface The impeller is rotatable within the casing around a rotational axis. A plurality of impeller depressions is formed in at least the lower surface of the impeller. The plurality of impeller depressions is located on at least one of the inside and the outside of a group of concavities. The plurality of impeller depressions is arranged on a circle around the rotational axis of the impeller. Each of the impeller depressions has its deepest portion in a rear half thereof with respect to the rotational direction of the impeller.
Inventors:
Issei Hanai
Application Number:
JP2006274735A
Publication Date:
March 07, 2012
Filing Date:
October 06, 2006
Export Citation:
Assignee:
Aisan Industry Co., Ltd.
International Classes:
F04D29/24; F04D5/00; F04D29/42
Domestic Patent References:
| JP6506279A | ||||
| JP2001153081A |
Attorney, Agent or Firm:
Kaiyu International Patent Office