METHOD AND A DEVICE FOR REDUCING THE GAP BETWEEN A STATIC AND A MOVABLE PART

A process and device are disclosed for reducing the gap between a static part (2) and a movable part (1). A gas compatible with the working media of the installation is at first and temporarily introduced into the area of the gap, where it precipitates and transforms into ice (5) because of the pres...

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Bibliographische Detailangaben
1. Verfasser:	DINNER, PAUL J
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS CYLINDERS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS PISTONS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS SEALINGS TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	A process and device are disclosed for reducing the gap between a static part (2) and a movable part (1). A gas compatible with the working media of the installation is at first and temporarily introduced into the area of the gap, where it precipitates and transforms into ice (5) because of the presence of a cooling channel (4) in the area of the gap. This process may be applied both to mechanical pumps and to valves; in the case of the latter, the ice layer is compressed when the valve is closed.