Pressure relief valve integrated in pivot pin of pump

US11480173B2 · kind B2 · utility

Assignee

• Stackpole International Engineered Products, Ltd. · CA

Inventors

• Abdalhameed Zubeidat · Rösrath, DE
• Haytham Elgamal · Aachen, DE
• Hans Peter Kutzer · Gangelt, DE

Key dates

• Filing date: Jan 24, 2020
• Grant date: Oct 25, 2022
• Expiry date: Jan 13, 2041

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04C2210/14
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

Disclosed is a pump for dispensing lubricant to a system. The pump includes: a housing having an inlet for inputting lubricant into the housing and an outlet for delivering the lubricant therefrom. A control slide is pivotable about a pivot pin within the housing in a displacement increasing direction and a displacement decreasing direction to adjust pump displacement. A resilient structure biases the control slide in the displacement increasing direction. A pressure relief valve is mounted to the pivot pin and positioned along an outflow path leading pressurized lubricant from the control slide to the outlet. The pressure relief valve is biased in a closing direction and has a pressure receiving surface receiving pressure from the lubricant in the outflow path to urge the pressure relief valve in an opening direction. Opening the relief opening allows outflow of lubricant to relieve pressure in the outflow path.