Improvements in or relating to the impregnation of porous solids with other materials

A bearing material comprises a solid non-metallic component of rigid porous material impregnated with polytetrafluoroethylene. The porous material may be porous carbon. The impregnation may be effected by driving a colloidal suspension of plastic material into the pores of the said non-metallic comp...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	TINGLE ERIC DRUMMOND
Format:	Patent
Sprache:	eng
Schlagworte:	BEARINGS BLASTING ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A bearing material comprises a solid non-metallic component of rigid porous material impregnated with polytetrafluoroethylene. The porous material may be porous carbon. The impregnation may be effected by driving a colloidal suspension of plastic material into the pores of the said non-metallic component and subsequently removing the continuous phase of the suspensoid, e.g. by heating. A coagulating agent may be added to the suspensoid after it has been caused to enter the pores of the solid non-metallic component to facilitate the removal of the continuous phase, or alternatively a wetting agent may be employed. The invention is applied to bearings and electrical brushes.