Patent ID: 6415959
Filing Date: 2002-07-09
Classification: B05B

Abstract:
A pump for dispensing a volume of fluid from a container comprising:a pump body having a first and a second body end delimiting a cavity defined by internal body surfaces and forming a metering chamber located near said first body end, said metering chamber extending to a closed bottom defined by an inlet valve positioned below said metering chamber; said inlet valve including a valve seat defined by said pump body and a ball disposed therein, said valve seat cooperating with said ball to permit the fluid to enter the metering chamber; a spray tube extending from outside said body into said metering chamber and positioned coaxially to said metering chamber, said spray tube having an outwardly radially extending tube shoulder formed along a top portion of an external surface thereof for receiving one end of a helical spring; an outlet valve mounted along a bottom portion of said external surface of said spray tube; said helical spring mounted coaxially around said external surface of said spray tube for biasing said spray tube for axial movement relative to said pump body, said helical spring positioned above said outlet valve relative to and outside of said metering chamber; and wherein said pump body is made from a transparent or at least translucent plastic material and said ball is made from a material selected from the group consisting of glass and polypropylene.