EP 0236148 A3 19871209 - OSCILLATING PISTON-TYPE MULTIFUNCTIONAL VOLUMETRIC PUMP
Title (en)
OSCILLATING PISTON-TYPE MULTIFUNCTIONAL VOLUMETRIC PUMP
Publication
Application
Priority
FR 8600542 A 19860116
Abstract (en)
[origin: EP0236148A2] The invention relates to devices for taking up axial and radial play and to a self-operating system for improving the volumetric and mechanical efficiency of an oscillating piston-type volumetric pump. A radial compression component (3) presses a piston (1) against a body (2). An axial compression component (8) presses on a front plate (10) containing a pressure-equalizing aperture (11), which presses the piston (1) onto a rear plate (12). The piston (1) has a slit in which an elastic component produces firm contact of the piston with a diaphragm (19). A rotating glass component (27) bears permanently on a fixed abutment (24) thus forming a sealing gasket. These devices are intended especially for volumetric pumps carrying out high and low pressure transfer operations in chemistry and parachemistry. The flow rate may be fixed or variable. Mixing, grinding and filtering. <IMAGE>
IPC 1-7
IPC 8 full level
F04C 2/04 (2006.01); F04C 11/00 (2006.01); F04C 13/00 (2006.01)
CPC (source: EP)
F04C 2/04 (2013.01); F04C 11/005 (2013.01); F04C 13/002 (2013.01)
Citation (search report)
- FR 1478849 A 19670428
- GB 1121574 A 19680731 - KNAPP HORST
- FR 529681 A 19211203
- FR 2172731 A5 19730928 - SPERRY RAND CORP [US]
- US 2856860 A 19581021 - ROTH JAY M
- US 3730656 A 19730501 - LAMBETH D
- FR 1141892 A 19570911
- FR 1208295 A 19600223
- FR 855811 A 19400521
- FR 54561 E 19500504
Designated contracting state (EPC)
BE DE ES GB IT NL
DOCDB simple family (publication)
FR 2592920 A1 19870717; FR 2592920 B1 19890602; EP 0236148 A2 19870909; EP 0236148 A3 19871209
DOCDB simple family (application)
FR 8600542 A 19860116; EP 87400045 A 19870112