Piston and rod assembly for sliding in a cylinder
US4372702A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 21, 1981 |
| Grant date | Feb 8, 1983 |
| Priority date | — |
| Expiry date | Jan 21, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J1/12
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The piston comprises two annular members which are mounted without clearance on a tubular rod. The main annular member receives in a counter bore the other annular member without clearance. The assembly is achieved by means of a mutual forming over of the two annular members which pre-stresses a rigid ring in a groove in the rod, this ring being interposed between the two annular members. The main annular member has a second formed over portion which is engaged in a groove in the rod and is capable of performing the function of the first mentioned forming over in the event of failure of the latter. Application in control cylinder devices of helicopters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.