EP 0264778 B1 19910102 - VANE PUMP
Title (en)
VANE PUMP
Publication
Application
Priority
DE 3635494 A 19861018
Abstract (en)
[origin: EP0264778A2] The vane vacuum pump has a rotor with a single slot in which a rigid vane is directed. The circumference of the housing describes the equidistant to a limaçon. The distance of the equidistant to the limaçon is equal to the radius of curvature of the vane edges. In order to optimise the volumetric delivery, the radius of curvature of the vane edges is smaller than half the vane thickness and the ratio of the housing radius/radius of curvature difference to the eccentricity is essentially equal to 2. <IMAGE>
IPC 1-7
IPC 8 full level
F01C 21/08 (2006.01); F04C 2/344 (2006.01); F04C 18/344 (2006.01)
CPC (source: EP)
F01C 21/0881 (2013.01); F04C 18/3441 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0264778 A2 19880427; EP 0264778 A3 19890104; EP 0264778 B1 19910102; DE 3766931 D1 19910207; JP S63109293 A 19880513; JP S63109294 A 19880513
DOCDB simple family (application)
EP 87114934 A 19871013; DE 3766931 T 19871013; JP 26194987 A 19871019; JP 26195087 A 19871019