Working cylinder for power tool with piston lubricating system
US12194607B2 · kind B2 · utility
0Cited by
56References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2022 |
| Grant date | Jan 14, 2025 |
| Priority date | — |
| Expiry date | Aug 18, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/162
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fastener driving tool with a working cylinder and a piston, the piston outer surface having a lubricant-saturated foam material that stores and dispenses lubricant into the piston-cylinder wall interface, thereby increasing the performance and lifespan of the tool. Another embodiment discloses a two-part piston in which the bottom portion is made of metal and absorbs the main mechanical loading forces of the piston drive and return strokes, and the top portion is made of a non-metallic material that has surfaces that act as sliding bearings against the inner wall of the cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.