Pump body with plunger pistons

• US 20060024173A1
• Filed: 07/14/2005
• Published: 02/02/2006
• Est. Priority Date: 08/02/2004
• Status: Active Grant

• Current Assignee: Annovi Reverberi SpA
• Original Assignee: Annovi Reverberi SpA
• Inventors: Rocchi, Alberto, Reverberi, Stefano
• Granted Patent: US 7,658,597 B2
• Time in Patent Office: Days
• US Class Current: 417/269
• CPC Class Codes: F04B 1/141 Details or component parts
• CPC Class Codes: F04B 1/143 Cylinders
• CPC Class Codes: F04B 1/145 Housings

Abstract

Pump with plunger pistons comprising a head (1) in which are formed the intake and delivery ducts (2, 3) and the respective intake and delivery valves, a pump body (4) associated with said head (1) in which drive means (8) of at least one piston (6), and attachment and support means (5) of said pump body (4) at a body of the drive motor are situated, where said pump body (4) has, on the bottom wall (40), the seats (41) for the sliding of the pistons (6) and directly carries said attachment and support means (5) of the body of the drive motor and it is completely open on the edge facing towards the motor.

Claims

1. Pump with plunger pistons comprising a head (1) in which are formed the intake and delivery ducts (2, 3) and the respective intake and delivery valves, a pump body (4) associated with said head (1) in which drive means (8) of at least one piston (6), and attachment and support means (5) of said pump body (4) at a body of the drive motor are situated, characterised in that said pump body (4) has, on the bottom wall (40), the seats (41) for the sliding of the pistons (6) and directly carries said attachment and support means (5) of the body of the drive motor and it is completely open on the edge facing towards the motor.

2. Pump according to claim 1, wherein said drive means comprise a rotating inclined plate (8) having a hollow tang (81).

3. Pump according to claim 2, wherein a bearing (9) is arranged between said hollow tang (81) and said pump body (4).

4. Pump according to claim 3, wherein said bearing (9) is kept in position by an elastic ring (91) that axially locks the bearing (9) with respect to the pump body (4).

5. Pump according to claim 3, wherein said pump body (4) is isolated from the outside through a gasket (10) arranged between the pump body (4) and the hollow tang (81).

6. Pump according to claim 1, wherein said attachment and support means comprise a plurality of brackets (5) canti-levered from said pump body (4).