Closing device for closing pressure fluid conveying channels in a housing
US5848616A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1996 |
| Grant date | Dec 15, 1998 |
| Priority date | — |
| Expiry date | Nov 4, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49938
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A closing device for closing pressure fluid conveying channels in a housing by a closing member press fitted into a channel. The outside periphery of the closing member including at least one indentation into which, during press fitting the closing member into the channel, basic material of the housing is deformed to provide a form lock, and the channel is configured as a stepped bore having an outside bore portion of large diameter that is remote from the pressure fluid side which, through a step, is followed by an inside bore portion of smaller diameter that is close to the pressure fluid side. The closing member has two piston portions of differently large diameters which correspond to the two bore portions, and the indentation provided between the piston portions is undercut relative to the small diameter portion, and the basic material is press fitted by plastic deformation into the indentation to provide the form lock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.