Unitary hollowed piston with improved structural strength
US6941852B1 · kind B1 · utility
3Cited by
10References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2004 |
| Grant date | Sep 13, 2005 |
| Priority date | — |
| Expiry date | Feb 29, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B27/0878
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A unitary, “hollow out” piston is molded or forged with only two tools, which move along a single parting direction, with a pair of arcuate side walls that provide maximal outer surface area with minimal thickness and weight. The thin walls are internally fortified by a cruciform support structure that is molded integrally by the same tools. No post forming machining steps are needed to reduce weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.