Programmable automatic lubricant dispenser

US6216822A · kind A · utility

Assignee

• PERMA-TEC GMBH & CO. KG · DE

Inventors

• Anton May · Burkardroth, DE
• Ralf Albert · Schweinfurt, DE
• Bernd Scheit · Bad Kissingen, DE
• Claus Helbig · Schonungen, DE
• Stefan Brand · Leutershausen, DE
• Susanne Bahrend · Hammelburg, DE

Key dates

• Filing date: Oct 8, 1999
• Grant date: Apr 17, 2001
• Expiry date: Oct 8, 2019

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16N2230/02
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An automatic lubricant dispenser has a lower housing part formed with an outlet, a piston displaceable along an axis in the lower part and forming therein a compartment, a spindle extending along the axis, threaded into the piston, having an upper end above the piston provided with a lower coupling half, and a body of fluent lubricant filling the compartment. An upper housing part removably securable to the lower part holds an electrical motor unit having an output shaft projecting downward at the axis and provided with an upper coupling half axially engageable with the lower coupling half. The coupling halves are axially engageable to rotationally couple the motor output shaft to the spindle so that electrical energization of the motor when the coupling halves are engaged displaces the piston and expresses lubricant from the outlet. A sensor connected to the shaft generates an output after a predetermined angular displacement of the shaft. An erasable nonvolatile memory in the upper housing part is associated with a reset switch for clearing the nonvolatile memory and with electrically powered controller. This controller is also connected to the sensor means and nonvolatile memory…