Global Patent Index - EP 2025893 A1

EP 2025893 A1 2009-02-18 - A reciprocating piston mechanism

Title (en)

A reciprocating piston mechanism

Title (de)

Hubkolbenmechanismus

Title (fr)

Mécanisme réciproque de piston

Publication

EP 2025893 A1 (EN)

Application

EP 07114078 A

Priority

EP 07114078 A

Abstract (en)

A reciprocating piston mechanism (1) comprises a crankcase (2), a crankshaft (3) which has at least a crankpin. The crankshaft (3) is supported by the crankcase (2). The mechanism (1) further comprises at least a connecting rod including a big end and a small end, a piston (12) being rotatably connected to the small end, a crank member (7) being rotatably mounted on the crankpin, and comprising at least a bearing portion (8) which is eccentrically disposed with respect to the crankpin, and having an outer circumferential wall which bears the big end of the connecting rod such that the connecting rod is rotatably mounted on the bearing portion (8) of the crank member (7) via the big end. The mechanism (1) further comprises a gear (13) which is fixed to the crank member (7), and an internal ring gear (14) which is disposed concentrically with respect to the crankshaft axis and which is fixed to and carried by an internal ring gear carrier (15). The gear (13) meshes with the internal ring gear (14) for rotating the crank member (7) with respect to the crankpin upon rotation of the crankshaft (3). The internal ring gear carrier (15) is connected to the crankcase (2) at an axial distance of the internal ring gear (14) and free from the crankshaft (3).

IPC 8 full level (invention and additional information)

F02B 75/04 (2006.01)

CPC (invention and additional information)

F02B 75/048 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA HR MK RS

EPO simple patent family

EP 2025893 A1 20090218; WO 2009018863 A1 20090212

INPADOC legal status


2010-03-03 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20090819

2009-12-03 [REG DE 8566] DESIGNATED COUNTRY DE NOT LONGER VALID

2009-10-21 [AKX] PAYMENT OF DESIGNATION FEES

2009-02-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

2009-02-18 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Countries: AL BA HR MK RS