Roller, vane or like rotary pump

The cam surface of a roller-type positive displacement pump providing an inlet port and two outlet ports has on circumferentially opposite sides of at least one of the outlet ports a profile such that the difference between the squares of the radii at the instantaneous points of contact therewith of...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	BRISTOW, IAN TREVOR
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	The cam surface of a roller-type positive displacement pump providing an inlet port and two outlet ports has on circumferentially opposite sides of at least one of the outlet ports a profile such that the difference between the squares of the radii at the instantaneous points of contact therewith of the two rollers which serve to seal the port at said opposite sides is a constant. The portions of the cam surface at oposite sides of such an outlet port have radii relative to the axis of rotation of the rotor which decrease progressively in the direction of rotation of the rotor.