EP 0310254 A3 19900530 - RECIPROCATING PUMP UNIT
Title (en)
RECIPROCATING PUMP UNIT
Publication
Application
Priority
GB 8720995 A 19870907
Abstract (en)
[origin: EP0310254A2] Pump units with reciprocably movable pistons driven by linear electric motors move substantially equal volumes of fluid on each stroke. Two pistons (10,11) can be moved alternately towards and away from each other, or a piston assembly comprising a piston (60;85) is reciprocated in a cylinder (61;82) together with a discharge tube (56;99) extending from the piston into a discharge duct (75;102).
IPC 1-7
IPC 8 full level
F04B 3/00 (2006.01); F04B 17/04 (2006.01); F04B 53/12 (2006.01)
CPC (source: EP US)
E21B 43/128 (2013.01 - EP US); F04B 3/00 (2013.01 - EP); F04B 17/046 (2013.01 - EP); F04B 53/125 (2013.01 - EP); F04B 53/126 (2013.01 - EP)
Citation (search report)
- [X] DE 2437666 A1 19760219 - WOLFORD EARL WILLIAM
- [X] DE 3132897 A1 19830303 - BOSCH GMBH ROBERT [DE]
- [A] GB 2112872 A 19830727 - BRITISH PETROLEUM CO PLC
- [A] US 4548552 A 19851022 - HOLM DANIEL R [US]
- [A] US 4538970 A 19850903 - RABSON THOMAS A [US]
- [AP] EP 0237145 A2 19870916 - FRAMO DEV LTD [GB]
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0310254 A2 19890405; EP 0310254 A3 19900530; GB 8720995 D0 19871014
DOCDB simple family (application)
EP 88308194 A 19880905; GB 8720995 A 19870907