| US 7,491,046 B2 | ||
| Piston for a rotary combustion engine | ||
| Wolfgang Baier, Obbach (Germany); and Dankwart Eiermann, Weiβensberg (Germany) | ||
| Assigned to Wankel Super Tec GmbH, Cottbus (Germany) | ||
| Filed on Jun. 09, 2005, as Appl. No. 11/149,371. | ||
| Claims priority of application No. 10 2004 174 (DE), filed on Jun. 09, 2004. | ||
| Prior Publication US 2005/0276704 A1, Dec. 15, 2005 | ||
| Int. Cl. F01C 1/02 (2006.01); F01C 19/08 (2006.01); F01C 21/08 (2006.01); F01C 21/00 (2006.01); F02B 53/00 (2006.01); F02B 53/10 (2006.01) | ||
| U.S. Cl. 418—61.2 [418/91; 418/94; 123/200; 123/205] | 11 Claims |
| 1. A triangular piston configured to receive an eccentric shaft of a rotary combustion engine, the triangular piston comprising:
a housing comprising:
a pair of axially spaced flanks, and
a triangular outer periphery bridging the pair of flanks;
respective sidewalls welded to the flanks of the housing so as to form a respective welded region between each of the sidewalls
and the housing, each of the welded regions having respective axially extending pin bores, and the sidewalls each being configured
with a thickness greater than a depth of the pin bore; and
fluid-conducting ribs formed within the housing between the sidewalls.
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