Lubricant dispenser

US6601738B2 · kind B2 · utility

Assignee

• PERMA-TEC GMBH & CO. KG · DE

Inventors

• Michael Weigand
• Armin Brand · Kissing, DE
• Bernd Scheit · Bad Kissingen, DE
• Thomas Hildenbrand · Koblenzer Straße, DE

Key dates

• Filing date: Oct 18, 2001
• Grant date: Aug 5, 2003
• Expiry date: Dec 30, 2021

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16N11/08
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A lubricant dispenser comprising a housing, a lubricant supply container, a plunger, a telescopic hollow spindle, and an electromechanical servo-drive for changing the length of the telescopic hollow spindle. One end of the telescopic hollow spindle is fixed on the housing. With its other end, the telescopic hollow spindle cooperates with a plunger containing a passage opening for lubricant. The telescopic hollow spindle has a lubricant passage channel in which at least one check valve is arranged on the inlet side. The telescopic hollow spindle alternately carries out setting strokes of different lengths that increase or reduce the length of the spindle. The setting strokes are coordinated with each other so that with a setting stroke of the telescopic hollow spindle increasing the length of the spindle, a preset amount of lubricant displaced by the movement of the plunger enters the lubricant passage channel through the opening check valve.