EP 1034374 A4 20010131 - ROTARY PISTON PUMP AND METHOD OF OPERATION
Title (en)
ROTARY PISTON PUMP AND METHOD OF OPERATION
Title (de)
ROTATIONSKOLBENPUMPE UND VERFAHREN ZU IHREM BETRIEB
Title (fr)
POMPE ROTATIVE A PISTONS ET PROCEDE DE FONCTIONNEMENT
Publication
Application
Priority
- NZ 9800175 W 19981125
- NZ 32927497 A 19971127
Abstract (en)
[origin: WO9928629A1] A work unit, such as a blower, compressor, supercharger or engine is shown with a main shaft (1) and a pair of pistons (3) mounted on respective shafts (4). The main shaft (1) and the shafts (4) are connected by suitable gearing to hold the pistons (3) in a stationary orientation relative to the axis of the main shaft (1) and the housing (5). The main shaft (1) has a pair of opposed part cylindrical recesses (55) to accommodate the respective pistons (3). The arcuate surfaces (R4) of the pistons (3) cooperate with the concentric arcuate surface (R5) of the shaft (1). As the shaft (1) rotates, the edges or tips (48) of the pistons (3) can cooperate with the respective top and bottom arcuate surfaces (R1, R2) of the inner surface (49) of the housing (5) on either side of the blades (53, 54), while the external arcuate surfaces (R4) of the piston (3) can cooperate with the concentric arcuate surfaces (R3) of the internal surface (49) of the housing (5).
IPC 1-7
IPC 8 full level
F01C 1/063 (2006.01); F01C 1/36 (2006.01); F02B 53/00 (2006.01); F04C 18/00 (2006.01)
CPC (source: EP)
F01C 1/36 (2013.01)
Citation (search report)
- [X] FR 1489283 A 19670721
- [A] US 3363606 A 19680116 - ROBERTSON JAMES E
- See references of WO 9928629A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9928629 A1 19990610; AU 1696799 A 19990616; AU 737023 B2 20010809; EP 1034374 A1 20000913; EP 1034374 A4 20010131; JP H11182201 A 19990706; TW 362127 B 19990621; ZA 9810871 B 19990527
DOCDB simple family (application)
NZ 9800175 W 19981125; AU 1696799 A 19981125; EP 98961704 A 19981125; JP 10998998 A 19980420; TW 87105494 A 19980410; ZA 9810871 A 19981127