Title:
【考案の名称】ロータリーポンプ
Document Type and Number:
Japanese Patent JPH064386
Kind Code:
U
Abstract:
A rotor drive shaft (12) and a rotor (1A, 1B) are connected in such manner that a rotor shaft (2) integrally extends in a plane surface of the rotor (1A, 1B). A tapped hole (3) with a deep concave shape is provided in a leading end surface of the rotor shaft (2) in the axial direction, and a hollow part (16) is provided in the rotor drive shaft (12) such that its passes therethrough in the axial direction. A headed bolt (15) is inserted in the hollow part (16) of rotor drive shaft (12), the head (15a) thereof being in abutment with an end surface of the rotor drive shaft (12), and a threaded leading end (15b) thereof being screwed in the tapped hole (3) of the rotor shaft (2). The rotor (1A, 1B) is fixed to the rotor drive shaft (12) without using any rotor fastening nut, and the inner side surface of casing cover can be formed with an entirely flat shape, so that the retention of a liquid within the casing is prevented.
Inventors:
Kazuo Morita
Tokuji Yamamoto
Tokuji Yamamoto
Application Number:
JP4503692U
Publication Date:
January 21, 1994
Filing Date:
June 29, 1992
Export Citation:
Assignee:
Nakamura Metal Industry Co., Ltd.
International Classes:
F04C13/00; F04C14/04; F04C15/00; F04C2/18; (IPC1-7): F04C2/18; F04C13/00; F04C15/04
Attorney, Agent or Firm:
Fujikawa Tadashi
Next Patent: CLOSED TYPE COMPRESSOR