JPS646373U

JPS646373U -

Info

Publication number: JPS646373U
Application number: JP10217187U
Authority: JP
Priority date: 1987-07-02
Filing date: 1987-07-02
Publication date: 1989-01-13

Description

[Brief explanation of the drawing]

第１図は本考案の対象となる往復動ポンプを模
式的に表わした図、第２図は本考案の好適な実施
例を示す図、第３図乃至第５図は従来の装置を示
す図である。１：低圧ピストン、２：低圧シリンダ、３：左
端面、４：右端面、７：方向制御弁、１１：高圧
ピストン、１２：高圧ピストン、１３：高圧シリ
ンダ、１４：高圧シリンダ、１７：流体供給口、
１８：流体供給口、２４：近接スイツチ、２１：
細径部、２２：太径部、２３：太径部。 FIG. 1 is a diagram schematically showing a reciprocating pump to which the present invention is applied, FIG. 2 is a diagram showing a preferred embodiment of the present invention, and FIGS. 3 to 5 are diagrams showing a conventional device. It is. 1: Low pressure piston, 2: Low pressure cylinder, 3: Left end surface, 4: Right end surface, 7: Directional control valve, 11: High pressure piston, 12: High pressure piston, 13: High pressure cylinder, 14: High pressure cylinder, 17: Fluid supply mouth,
18: Fluid supply port, 24: Proximity switch, 21:
Small diameter part, 22: Large diameter part, 23: Large diameter part.

補正昭６２．９．２９図面の簡単な説明を次のように補正する。明細書第１１頁第１２行から始まる図面の簡単
な説明の欄の同第１３行から同第１６行において
、「第１図は本考案の対象となる往復動ポンプを
模式的に表わした図、第２図は本考案の好適な実
施例を示す図、第３図乃至第５図は従来の装置を
示す図である。」とあるのを、「第１図は本考案
の対象となる往復動ポンプを模式的に表わした図
、第２図は本考案の好適な実施例を示す図、第３
図乃至第６図は従来の装置を示す図である。」と
補正する。Amendment September 29, 1982 The brief description of the drawing is amended as follows. From line 13 to line 16 of the brief description of the drawings starting from line 12 on page 11 of the specification, it is stated that ``Figure 1 is a diagram schematically representing a reciprocating pump that is the object of the present invention. , Fig. 2 is a diagram showing a preferred embodiment of the present invention, and Figs. 3 to 5 are diagrams showing conventional devices.'' was replaced with ``Fig. 1 is the subject of the present invention.'' FIG. 2 is a diagram schematically showing a reciprocating pump, FIG. 2 is a diagram showing a preferred embodiment of the present invention, and FIG.
Figures 6 through 6 are diagrams showing conventional devices. ” he corrected.

Claims

[Scope of utility model registration request]

A large-diameter low-pressure piston and a small-diameter high-pressure piston extending from the low-pressure piston are configured to be able to reciprocate within a low-pressure cylinder and a high-pressure cylinder that surround each piston, and the low-pressure cylinder A reciprocating pump is configured such that a fluid supply port is provided at both ends of the pump, and pressurized fluid can be supplied to the fluid supply port via a directional control valve. 1. A device comprising: a proximity switch; and a piston formed to have a small diameter to such an extent that the proximity switch is not sensitive to a predetermined range other than both ends of the low-pressure piston.