Method of Manufacturing An Orifice Holder Assembly

Abstract

An orifice holder assembly provides a boss connected by at least one arm to a base having an outlet therethrough. The boss is provided below the outlet. A tube is inserted through the boss until a bead contacts a first boss surface and the tube end is then deflected to form a lip where the lip and the bead connects the tube to the boss. An orifice body is then inserted in the tube end.

1 . A method of manufacturing an orifice holder assembly comprising the steps of:
 providing an orifice holder having a base connected by at least one arm to a boss, said boss located below the base and having a bore therethrough extending from a first boss surface to a second boss surface with said second boss surface located above the first boss surface;   directing a tube to be received by the boss, said tube having a preformed bead disposed about the tube spaced from a tube end, said bead contacting the first boss surface with a portion of the tube extending through the bore of the boss, said tube then deformed at the tube end to provide a lip with a lip engagement surface in contact with the second boss surface external to the bore with the lip and the bead forming a mechanical connection of the tube to the boss by entrapping a portion of the boss between the lip and bead; and   then installing an orifice body in the tube end, said orifice body having a bore therethrough, said orifice body located below the base with a space above the orifice body and below the base and said orifice body terminating internal to the boss above the first boss surface.   
     
     
         2 . The method of manufacturing the orifice holder assembly of  claim 1  wherein the orifice body has external threads, and installing the orifice body further comprises screwing the threads into an internal portion of the tube toward the tube end. 
     
     
         3 . The method of manufacturing the orifice holder assembly of  claim 1  wherein the at least one arm integrally connected to and extends from the boss. 
     
     
         4 . The method of manufacturing the orifice holder assembly of  claim 3  wherein after providing the mechanical connection of the tube to the boss, the first boss surface against the bead is the lowest portion of the boss. 
     
     
         5 . The method of manufacturing the orifice holder assembly of  claim 1  wherein after the installation of the orifice holder, an outlet of the orifice holder extends through the base above the orifice body. 
     
     
         6 . The method of manufacturing the orifice holder assembly of  claim 1  wherein the at least one arm further consists of two arms extending from the base to the boss. 
     
     
         7 . The method of manufacturing the orifice holder assembly of  claim 6  wherein the two arms are oppositely and symmetrically disposed relative to the orifice body. 
     
     
         8 . The method of manufacturing the orifice holder assembly of  claim 1  wherein the tube end is provided having a smaller cross section than the bore of the boss until physically deflected to provide the lip, and the directing step further comprises inserting the tube end through the bore of the boss until the bead contacts the first boss surface, and then deflecting the tube end to provide the lip external to the bore of the boss. 
     
     
         9 . The orifice holder assembly of  claim 8  wherein the orifice body has self-tapping external threads and the installation step further comprises screwing the orifice body to the tube end. 
     
     
         10 . A method of manufacturing an orifice holder assembly comprising the steps of:
 providing an orifice holder having an outlet, and the orifice holder further having a base connected by at least one arm to a boss, said boss located under the outlet and having a bore therethrough extending from a first boss surface to a second boss surface with said second boss surface located above the first boss surface;   inserting a tube into the boss, said tube having a preformed bead disposed about the tube spaced from a tube end, said tube inserted until the bead contacts the first boss surface with a portion of the tube extending through the bore of the boss, said tube deformed after insertion to provide a lip at the tube end with a lip engagement surface in contact with the second boss surface external to the bore with the lip and the bead forming a mechanical connection of the tube to the boss by entrapping a portion of the boss between the lip and bead; and   installing an orifice body in the tube end and having a bore therethrough, said orifice body located below the outlet with a space above the orifice body and below the outlet, and said orifice body terminating internal to the boss above the first boss surface.   
     
     
         11 . The method of manufacturing the orifice holder assembly of  claim 10  wherein the tube end initially has a smaller cross section than the bore of the boss until physically deflected during the deflection step to provide the lip. 
     
     
         12 . The method of manufacturing the orifice holder assembly of  claim 10  wherein the tube end is physically deflected with a device extending through the outlet of the orifice holder which is removed after forming the lip. 
     
     
         13 . The method of manufacturing the orifice holder assembly of  claim 12  wherein after deflecting the tube end to provide the lip, then inserting the orifice body at the tube end. 
     
     
         14 . The method of manufacturing the orifice holder assembly of  claim 13  wherein the orifice body is provided self-tapping external threads which screw into the orifice body to the tube end during installation. 
     
     
         15 . The method of manufacturing the orifice holder assembly of  claim 10  wherein the orifice body has external threads which screw into an internal portion of the tube toward the tube end and after installation the bead is located external to the bore. 
     
     
         16 . The method of manufacturing the orifice holder assembly of  claim 10  wherein the at least one arm is integrally connected to the base and the boss and the bead is located below the first boss surface. 
     
     
         17 . The method of manufacturing the orifice holder assembly of  claim 10  wherein the at least one arm further comprises two arms extending from the base to the boss and at least a portion of the lip is located above the second boss surface. 
     
     
         18 . The method of manufacturing the orifice holder assembly of  claim 17  wherein the two arms are oppositely disposed relative to the orifice body.