Process for producing sliding bodies for electric collectors
US5630973A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1995 |
| Grant date | May 20, 1997 |
| Priority date | — |
| Expiry date | Apr 5, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01R39/36
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A sliding body for electric collectors and the like is press-formed from a powder mass or composition which includes at least graphite and a synthetic resin as a bonding agent. The powder mass is pressed in a mold with at least one press die after a thin layer of a resin-free parting compound is applied between the powder mass and the press die to prevent the resin from adhering to the press die when subjected to frictional heat of compression. Powdered copper is the preferred parting compound and also reduces the contact resistance between the press-formed powder mass and a lead embedded in and pressed with the powder mass in the mold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.