Orifice Holder Construction

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 . An orifice holder assembly comprising:
 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;   a tube received by the boss, said tube having a 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 tube, said tube also having 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; and   an orifice body connected to the tube end and having a bore therethrough, said orifice body located below the base with a space above the orifice body and below the base.   
   
   
       2 . The orifice holder assembly of  claim 1  wherein the orifice body has external threads which are in contact with an internal portion of the tube toward the tube end. 
   
   
       3 . The orifice holder assembly of  claim 1  wherein the boss and at least one arm are integrally connected. 
   
   
       4 . The orifice holder assembly of  claim 3  wherein the at least one arm is integrally connected to the base. 
   
   
       5 . The orifice holder assembly of  claim 1  wherein the orifice holder further comprises an outlet which extends through the base above the orifice body. 
   
   
       6 . The orifice holder assembly of  claim 1  further comprising two arms extending from the base to the boss. 
   
   
       7 . The orifice holder assembly of  claim 6  wherein the two arms are oppositely disposed relative to the orifice body. 
   
   
       8 . The orifice holder assembly of  claim 1  manufactured by the process of providing a tube end having a smaller cross section than the bore of the boss until physically deflected to provide the lip, 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 process of manufacturing the orifice holder assembly further comprises after deflecting the tube end to provide the lip, then inserting the orifice body at the tube end. 
   
   
       10 . The orifice holder assembly of  claim 9  wherein the orifice body has self-tapping external threads which connect the orifice body to the tube end. 
   
   
       11 . An orifice holder assembly comprising:
 an orifice holder having an outlet and 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;   a tube received by the boss, said tube having a 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 tube, said tube also having 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; and   an orifice body connected to 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.   
   
   
       12 . The orifice holder assembly of  claim 11  manufactured by the process of providing a tube end having a smaller cross section than the bore of the boss until physically deflected to provide the lip, 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. 
   
   
       13 . The orifice holder assembly of  claim 11  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. 
   
   
       14 . The orifice holder assembly of  claim 13  wherein the process of manufacturing the orifice holder assembly further comprises after deflecting the tube end to provide the lip, then inserting the orifice body at the tube end. 
   
   
       15 . The orifice holder assembly of  claim 14  wherein the orifice body has self-tapping external threads which connect the orifice body to the tube end. 
   
   
       16 . The orifice holder assembly of  claim 11  wherein the orifice body has external threads which are in contact with an internal portion of the tube toward the tube end. 
   
   
       17 . The orifice holder assembly of  claim 11  wherein the at least one arm is integrally connected to the base and the boss. 
   
   
       18 . The orifice holder assembly of  claim 11  further comprising two arms extending from the base to the boss. 
   
   
       19 . The orifice holder assembly of  claim 18  wherein the two arms are oppositely disposed relative to the orifice body.