Plug-in type pump assembly

US4734016A · kind A · utility

Assignee

• Lear Siegler, Inc. · US

Inventor

• Thomas Sailer · Metzingen, DE

Key dates

• Filing date: Nov 13, 1986
• Grant date: Mar 29, 1988
• Expiry date: Nov 13, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/86348
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

Pump assembly includes a rotatable handle with integral cams thereon to releasably retain the pump assembly within a receiver. During assembly, the pump assembly is initially inserted only part way into the receiver to a first intermediate non-operating position and then rotated a part turn to cause the cams on the handle to be engaged inside receiver lugs on the receiver housing which retain the pump assembly in a second intermediate non-operating position for pump drainage. While in such second intermediate non-operating position, the handle may be rotated between closed and open positions to respectively push the pump assembly further into the receiver to an operating position and pull the pump assembly back out to the second intermediate non-operating position. Seal means between the pump assembly and receiver are respectively engaged and disengaged during camming movement of the pump assembly between such operating and non-operating positions. Also, one or more valve means are respectively opened and closed during each camming movement of the pump assembly between such operating and non-operating positions. The handle may be trapped in the closed position by an electrical conn…