EP 0617753 B1 19961016 - ROTARY PISTON PUMP
Title (en)
ROTARY PISTON PUMP
Title (de)
ROTATIONSKOLBENPUMPE
Title (fr)
POMPE A PISTON ROTATIF
Publication
Application
Priority
- DE 9115838 U 19911220
- EP 9202813 W 19921205
Abstract (en)
[origin: US5580227A] The present invention relates to a rotary piston pump for conveying and/or metering liquid or pourable media. It consists of a pump casing (2) with a cylinder chamber (4) having a cylindrical inner periphery (6) into which open at least one inlet (8) and at least out outlet (10), and a rotary piston (20) rotating inside the cylinder chamber (4) which, together with at least one region of its outer peripheral surface (22) forms a seal with the inner peripheral surface (6) of the cylinder chamber (4) and is separated in regions from the inner peripheral surface (6) by a radial stroke distance. When the rotary piston rotates (arrow 70), an expanding working chamber (24) is formed in the region of the inlet (8) to draw the medium in and, on further rotation, contracts again in the region of the outlet to force the medium out. The working chamber (24) concerned is limited, at least during its increase or decrease in volume, by at least one separating slide (26) in front of the inlet (8) or behind the outlet (10) viewed in the direction of rotation. Said slide is moved to and fro (arrow 32) in the pump casing (2), as the rotary piston (20) rotates, in a substantially radial direction to the axis of rotation (34) in such a way that it forms a seal with the outer peripheral surface (22) of the rotary piston (20). The separating slide (26) is forcibly moved by means of a drive device (30) synchronised with the rotary piston (20).
IPC 1-7
IPC 8 full level
F01C 1/352 (2006.01); F01C 1/356 (2006.01); F04C 2/356 (2006.01)
CPC (source: EP US)
F04C 2/3566 (2013.01 - EP US); Y10S 417/90 (2013.01 - EP)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IE IT LI NL SE
DOCDB simple family (publication)
US 5580227 A 19961203; AT E144307 T1 19961115; CA 2126326 A1 19930708; DE 59207393 D1 19961121; DE 9115838 U1 19920213; DK 0617753 T3 19970324; EP 0617753 A1 19941005; EP 0617753 B1 19961016; ES 2096779 T3 19970316; JP H08503756 A 19960423; WO 9313296 A1 19930708
DOCDB simple family (application)
US 24498294 A 19940829; AT 92924672 T 19921205; CA 2126326 A 19921205; DE 59207393 T 19921205; DE 9115838 U 19911220; DK 92924672 T 19921205; EP 9202813 W 19921205; EP 92924672 A 19921205; ES 92924672 T 19921205; JP 51138093 A 19921205