EP 0137421 B1 19880608 - EXTERNAL AXIS ROTARY PISTON MACHINE
Title (en)
EXTERNAL AXIS ROTARY PISTON MACHINE
Publication
Application
Priority
CH 551683 A 19831010
Abstract (en)
[origin: US4626182A] An external shaft rotary piston machine wherein pistons of a piston rotor run in engagement with a cavity of a circular cylindrical sealing rotor during a particular relative rotational position of the rotors, the cavity being substantially larger than necessary for passage of the pistons in order to avoid flow losses due to seal wedging flow and compression. In order to avoid overflow from the high pressure side to the low pressure side of the machine through the sealing rotor while the pistons move in the sealing rotor through the space defined by the cavity, a sealing effect is created by a leading edge and a trailing edge portion of the opening of the cavity of the sealing rotor moving along a leading and a trailing side surface of the pistons. This is effected kinematically due to the fact that the trailing edge of the cavity opening is displaced radially inwardly and that an edge portion extends from the trailing edge convexly relative to the peripheral surface of the sealing rotor.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
F01C 1/20 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0137421 A2 19850417; EP 0137421 A3 19850515; EP 0137421 B1 19880608; AT E35020 T1 19880615; CH 663446 A5 19871215; DE 3471971 D1 19880714; JP H0429841 B2 19920520; JP S60156901 A 19850817; US 4626182 A 19861202
DOCDB simple family (application)
EP 84111533 A 19840927; AT 84111533 T 19840927; CH 551683 A 19831010; DE 3471971 T 19840927; JP 21154284 A 19841011; US 65848284 A 19841009