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1. WO1990012960 - PUMP AND METERING APPARATUS

Publication Number WO/1990/012960
Publication Date 01.11.1990
International Application No. PCT/SE1990/000259
International Filing Date 17.04.1990
Chapter 2 Demand Filed 09.11.1990
IPC
F04B 13/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
13Pumps specially modified to deliver fixed or variable measured quantities
CPC
F04B 13/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
13Pumps specially modified to deliver fixed or variable measured quantities
Y10T 74/1868
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
74Machine element or mechanism
18Mechanical movements
18568Reciprocating or oscillating to or from alternating rotary
18576including screw and nut
1868Deflection related
Applicants
  • PHARMACIA BIOSENSOR AB [SE]/[SE] (AllExceptUS)
  • HOLMSTRÖM, Torbjörn [SE]/[SE] (UsOnly)
Inventors
  • HOLMSTRÖM, Torbjörn
Agents
  • BJÖRN, Widén
Priority Data
8901399-918.04.1989SE
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PUMP AND METERING APPARATUS
(FR) APPAREIL DE POMPAGE ET DE DOSAGE
Abstract
(EN)
A pump and metering apparatus, comprising a frame supporting a liquid container with a movable plunger therein for discharging respectively drawing in liquid, the plunger being connected to a runner means (17), which by a nut portion (16) thereof threadedly engages a screw (6) rotatably mounted in the frame and coupled to a driving motor. According to the invention the nut portion (16) of the runner means (17) is movable in relation to the remaining structure of the runner means (17) in the radial direction of the screw (6), such that the nut portion (16) will be self-centering on the centre axis of the screw.
(FR)
Appareil de pompage et de dosage, comprenant un cadre qui supporte un récipient de liquide doté d'un piston mobile pour l'aspiration ou la décharge d'un liquide, ledit piston étant relié à une glissière (17) qui, à l'aide d'un écrou (16), engage le filetage d'une vis (6), ladite vis étant montée de façon rotative sur le cadre et accouplée à un moteur d'entraînement. Selon l'invention, l'écrou (16) de la glissière (17) est mobile par rapport au reste de la structure de la glissière (17) dans le sens radial de la vis (6) de sorte que l'écrou est centré automatiquement sur l'axe central de ladite vis (6).
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