EP 2196675 A2 20100616 - Rotary vacuum pump
Title (en)
Rotary vacuum pump
Title (de)
Rotationsvakuumpumpe
Title (fr)
Pompe rotative sous vide
Publication
Application
Priority
- JP 2008315204 A 20081211
- JP 2009277492 A 20091207
Abstract (en)
The rotary vacuum pump includes a pump housing, a rotary shaft, a thrust movement restriction mechanism and a first elastic member. The pump housing has therein a pump chamber. The rotary shaft has thereon a rotor rotatably disposed in the pump chamber. When the rotor is rotated with the rotary shaft, gas in the pump chamber is pumped thereby to draw gas into the pump chamber. The thrust movement restriction mechanism is provided for allowing the rotor to displace in the pump chamber in one thrust direction due to thermal expansion thereof during the operation of the rotary vacuum pump. The first elastic member is provided for urging the rotary shaft in the other thrust direction opposite to the one thrust direction.
IPC 8 full level
F04C 18/12 (2006.01); F04C 23/00 (2006.01); F04C 25/02 (2006.01); F04C 29/00 (2006.01)
CPC (source: EP KR US)
F04C 2/14 (2013.01 - KR); F04C 18/126 (2013.01 - EP US); F04C 18/18 (2013.01 - KR); F04C 23/001 (2013.01 - EP US); F04C 25/02 (2013.01 - EP US); F04C 29/0021 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
EP 2196675 A2 20100616; JP 2010159740 A 20100722; KR 20100067632 A 20100621; TW 201030237 A 20100816; US 2010150760 A1 20100617
DOCDB simple family (application)
EP 09178669 A 20091210; JP 2009277492 A 20091207; KR 20090122472 A 20091210; TW 98142181 A 20091210; US 63645709 A 20091211