EP 0374115 A1 19900620 - Positive displacement pump.
Title (en)
Positive displacement pump.
Title (de)
Verdrängerpumpe.
Title (fr)
Pompe à déplacement positif.
Publication
Application
Priority
- SE 8804448 A 19881208
- US 35908589 A 19890530
Abstract (en)
A positive displacement pump comprises a variable volume pump chamber (16-1) and a drive mechanism (26-1) having a displacement member (25-1) for reducing the volume of the pump chamber(16-1). Fluid enters the pump chamber (16-1) from a supply chamber (15-1) located adjacent to and surrounding the lateral outer boundary of the pump chamber (15-1) through a valve-controlled inlet passage (17-1) that opens to the pump chamber (16-1) at an elongated gap-like inlet opening. The inlet passage permits fluid to flow from the supply chamber (15-1) into the pump chamber (16-1) with substantially no pressure drop.
IPC 1-7
IPC 8 full level
F04B 43/14 (2006.01); A61M 1/10 (2006.01); F04B 43/00 (2006.01); F04B 43/08 (2006.01); F04B 43/12 (2006.01)
CPC (source: EP)
F04B 43/0027 (2013.01); F04B 43/082 (2013.01)
Citation (search report)
DE 875142 C 19530430 - MESSERSCHMITT AG
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0374115 A1 19900620; EP 0374115 B1 19930714; AR 242113 A1 19930331; AU 4591889 A 19900614; AU 641371 B2 19930923; BR 8906367 A 19900821; CA 2004665 A1 19900608; CN 1020941 C 19930526; CN 1043191 A 19900620; CS 8906900 A2 19911112; CZ 280010 B6 19950913; DE 3939367 A1 19900613; DE 68907576 D1 19930819; DE 68907576 T2 19931223; DK 171584 B1 19970210; DK 603489 A 19900609; DK 603489 D0 19891129; ES 2044224 T3 19940101; FI 895853 A0 19891207; GB 2226606 A 19900704; GB 2226606 B 19930505; GB 8926719 D0 19900117; HU 896463 D0 19900228; HU T54900 A 19910429; IE 61833 B1 19941130; IE 893843 L 19900608; IL 92572 A0 19900831; JP H02230987 A 19900913; MX 173945 B 19940411; MY 104484 A 19940430; NO 894891 D0 19891206; NO 894891 L 19900611; PL 164330 B1 19940729; PT 92514 A 19900629; PT 92514 B 19950912; RU 2037652 C1 19950619
DOCDB simple family (application)
EP 89850427 A 19891208; AR 31561089 A 19891205; AU 4591889 A 19891206; BR 8906367 A 19891208; CA 2004665 A 19891205; CN 89109219 A 19891208; CS 690089 A 19891206; DE 3939367 A 19891129; DE 68907576 T 19891208; DK 603489 A 19891129; ES 89850427 T 19891208; FI 895853 A 19891207; GB 8926719 A 19891127; HU 646389 A 19891207; IE 384389 A 19891130; IL 9257289 A 19891206; JP 31663889 A 19891207; MX 1850789 A 19891128; MY PI19891656 A 19891129; NO 894891 A 19891206; PL 28268289 A 19891208; PT 9251489 A 19891207; SU 4742562 A 19891207