Vane pump having hollow pivot pin with fastener

Abstract

Disclosed is a vane pump including a housing, a pivot pin having a hollow portion mounted within the housing, a control slide displaceable about the pivot pin within the housing between a first slide position and a second slide position to adjust displacement of the pump through an outlet, and a cover attached to the housing via a fastener passing through the pivot pin such that the control slide rotates about the pivot pin with respect to the housing and the cover. In an example, the fastener passes through to the engine mount. The pivot pin does not create a fluid path through the hollow portion.

What is claimed is: 
     
         1 . A vane pump comprising:
 a housing;   a tubular pivot pin having a hollow portion mounted within the housing;   a control slide mounted to the pivot pin for displacement within the housing between a first slide position and a second slide position to adjust displacement of the pump through an outlet; and   a cover attached to the housing via a fastener passing through the pivot pin,   wherein the pivot pin does not create a fluid path through the hollow portion.   
     
     
         2 . The vane pump according to  claim 1 , further comprising:
 a control chamber on a first side of the control slide; and   a second chamber on a second side of the control slide between the housing and the control slide,   wherein the second chamber and the control chamber are not fluidically connected around the pivot pin.   
     
     
         3 . The vane pump according to  claim 1 , wherein the fastener is a bolt passing through the housing, the hollow portion of the pivot pin, and the cover, creating an attachment between components of the pump.