Global Patent Index - EP 1007822 A1

EP 1007822 A1 2000-06-14 - ROTARY ENGINE AND METHOD FOR DETERMINING ENGAGEMENT SURFACE CONTOURS THEREFOR

Title (en)

ROTARY ENGINE AND METHOD FOR DETERMINING ENGAGEMENT SURFACE CONTOURS THEREFOR

Title (de)

ROTIERENDE MASCHINE UND VERFAHREN ZUR BESTIMMUNG DER KONTAKTFLÄCHENKONTUR

Title (fr)

MOTEUR ROTATIF ET PROCEDE PERMETTANT DE DETERMINER LES CONTOURS DE SES SURFACES DE CONTACT

Publication

EP 1007822 A1 (EN)

Application

EP 99925884 A

Priority

  • US 9911642 W
  • US 8683898 P

Abstract (en)

[origin: WO9961753A1] An improved rotary engine (10) and method for determining the contours of the sealing surfaces (24, 34) thereof. The improved engine provides for maintaining a predetermined, optimal gap (IG) between the sealing surfaces during rotation. The gap may be parallel or angled, and may be positive or negative so as to form an interference engagement. The rotors (112, 114) of the engine may be provided with mirror-image sealing surfaces (160, 162, 166, 168) so as to prevent development of excessive back-lash and clearance, and also to permit efficient reverse operation. The sealing surfaces (200, 212) may also be provided with recesses (208) for interrupting the seal at predetermined points in the rotational cycle, for enhanced wear characteristics and/or to accommodate abrasive or shear-sensitive fluids.

IPC 1-7 (main, further and additional classification)

F01C 3/08

IPC 8 full level (invention and additional information)

F01C 3/08 (2006.01)

CPC (invention and additional information)

F01C 3/085 (2013.01)

Citation (search report)

See references of WO 9961753A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9961753 A1 19991202; AU 4208599 A 19991213; CA 2300420 A1 19991202; CA 2300420 C 20050503; EP 1007822 A1 20000614

INPADOC legal status


2008-01-04 [REG HK WD] APPLICATIONS WITHDRAWN, DEEMED TO BE WITHDRAWN, OR REFUSED AFTER PUBLICATION IN HONG KONG

- Document: HK 1031247

2003-08-27 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20021203

2000-06-14 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000228

2000-06-14 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE