Title:
PORTABLE HYDRAULIC PROCESSING MACHINE
Document Type and Number:
Japanese Patent JP3161993
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enable miniaturization of a housing, the light weight, and the increase of the stroke of a piston.
SOLUTION: A pump case 20 is formed by being divided into a front half part 20-1 and a rear half part 20-2, a reservoir 16 is provided in the pump case front half part, and a ring-shaped recessed part 40 whose front part is opened is formed in the pump case rear half part and around an arranging space of an output shaft 12a of a motor. A facing ring-shaped flexible oil bag 42 is arranged and fixed by communicating the inside with the reservoir 16 in the ring-shaped recessed part with close-contact of the opening end to the back surface of the pump case front half part 20-1.
Inventors:
Shoji Iwamoto
Application Number:
JP13170897A
Publication Date:
April 25, 2001
Filing Date:
May 06, 1997
Export Citation:
Assignee:
Ishihara Machinery Co., Ltd.
International Classes:
B25B25/00; B21D28/24; B25F5/00; B30B1/32; (IPC1-7): B25F5/00; B30B1/32
Domestic Patent References:
| JP957655A | ||||
| JP9168915A | ||||
| JP7285015A |
Other References:
【文献】登録実用新案3035872(JP,U)
Attorney, Agent or Firm:
Takao Warashina