Piston for engine
US10018147B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2016 |
| Grant date | Jul 10, 2018 |
| Priority date | — |
| Expiry date | Apr 24, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05C2253/20
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A piston for an engine includes a skirt part, and a resin coating film and a recess formed on a surface of the skirt part. A plurality of the resin coating films are discretely arranged in spots on the surface of the skirt part, and a mesh-like groove is formed by the recess provided between the resin coating films. The recess formed on the skirt part between the resin coating films adjacent to each other in a piston circumference direction is set to be adjacent to another resin coating film in a piston moving direction. An end part of the resin coating film in the piston moving direction is formed in a concave shape when seen in a piston radius direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.