Reciprocating piston pump with a housing block and at least one reciprocating piston pump element

US5540570A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Wolfgang Schuller · Cleebronn, DE
• Horst Stade · Blaichach, DE
• Stefan Seitz · Windach, DE

Key dates

• Filing date: Aug 29, 1994
• Grant date: Jul 30, 1996
• Expiry date: Aug 29, 2014

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04B53/168
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A reciprocating piston pump element of a reciprocating piston pump having a piston, a cylinder with a formed-on cylinder head, an outlet valve which adjoins the cylinder head and an outlet valve housing that is secured in the cylinder head in order to form a structural unit. To reduce the amount of structural space required and to reduce the purchase price, the cylinder with the cylinder head and the region of the outlet valve housing enclosing the closure element are embodied in one piece, and in addition to a sealing ring, a further sealing ring of essentially the same diameter is disposed. As a result, a securing means in the form of a bead formed from the material of the housing block, oriented toward the outlet valve chamber, suffices to secure the reciprocating piston pump element inside the bore of the housing block. The reciprocating piston pump element can be used for space-saving, less expensive anti-lock systems in motor vehicle brake systems and can be expanded for traction control.