EP 0843100 A1 19980520 - Pump with static device for switching it on
Title (en)
Pump with static device for switching it on
Title (de)
Pumpe mit fester Einschaltvorrichtung
Title (fr)
Pompe à dispositif fixe de mise en marche
Publication
Application
Priority
FR 9614087 A 19961119
Abstract (en)
The pump is contained in a sealed enclosure with breathe holes (3) positioned at the pump base. The pump has a static liquid presence sensor (8) which is mounted in a reverse flow tube (6) at a lower level than that of the tube output (7). The sensor is designed to detect the presence of a liquid at its level. A start/stop circuit (9) for the pump motor (4) is controlled by the sensor. The sensor may be of pressure, optical, ultrasound, temperature, capacitance, piezo-electric, or flexible membrane type.
Abstract (fr)
Dans cette pompe à enveloppe étanche, un détecteur (8) de présence de liquide est monté dans la tubulure (6) de refoulement à un niveau inférieur à celui de l'embouchure (7) de la tubulure (6) de refoulement. Il commande la mise en marche du moteur (4) de la pompe. <IMAGE>
IPC 1-7
IPC 8 full level
F04D 15/02 (2006.01)
CPC (source: EP)
F04D 15/0218 (2013.01)
Citation (search report)
- [A] US 4396353 A 19830802 - MACDONALD ROBERT D
- [A] US 4645426 A 19870224 - HARTLEY E DALE [US], et al
- [A] FR 2531148 A1 19840203 - GUILLEMOT GILBERT [FR]
- [A] DE 4244417 A1 19940707 - WILO GMBH [DE]
- [A] US 2635546 A 19530421 - ENYEART HAROLD F, et al
- [A] DE 3710318 A1 19881006 - KLEIN SCHANZLIN & BECKER AG [DE]
- [A] EP 0505009 A1 19920923 - BONDWELL LTD [GB]
- [A] US 4881873 A 19891121 - SMITH LEONARD S [US], et al
- [A] US 5151016 A 19920929 - HER TSER W [TW]
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI
DOCDB simple family (publication)
EP 0843100 A1 19980520; EP 0843100 B1 20030226; AT E233372 T1 20030315; DE 69719288 D1 20030403; DE 69719288 T2 20030918; DK 0843100 T3 20030414; ES 2188880 T3 20030701; FR 2756020 A1 19980522; FR 2756020 B1 19990108
DOCDB simple family (application)
EP 97402458 A 19971017; AT 97402458 T 19971017; DE 69719288 T 19971017; DK 97402458 T 19971017; ES 97402458 T 19971017; FR 9614087 A 19961119