Integrated U-tube and adsorbent unit

An integrated U-tube and adsorbent unit comprising a U-tube having first and second legs and a return bend, a space between said first and second legs, adsorbent in said space, said first and second legs and said return bend including first and second halves which are bonded to each other to define a conduit which extends through said first and second legs and said return bend, and a permeable cover bonded to at least one of said first and second opposite halves.

A method of fabricating an integrated U-tube and adsorbent unit comprising the steps of bonding first and second parts to define a U-tube having first and second legs and a return bend having a conduit in said first and second legs and in said return bend with a space between said legs and first and second opposite sides on said legs, providing a first cover on said first sides of said legs, placing adsorbent between said legs, and bonding a second cover to said second sides of said legs.

A U-tube comprising parts which are bonded to each other to define spaced legs and a return bend having a conduit extending through said spaced legs and said return bend, an oil pick-up hole in said return bend, a frame formed integrally with said return bend to define a space in communication with said hole, and filter material bonded to said frame on the opposite side of said space from said hole.

A U-tube comprising spaced legs and a return bend, and a refrigerant tracer dye compartment on said U-tube.

An integrated U-tube and adsorbent unit comprising a plastic U-tube having first and second legs and a return bend, and a self-contained adsorbent unit consisting of a plastic cover with adsorbent therein with said cover being fused to said plastic U-tube.

An integrated U-tube and adsorbent unit comprising a plastic U-tube having first and second legs and a return bend, adsorbent between said legs, a plastic cover confining said adsorbent between said legs, and said plastic cover including a portion which is fused to at least one of said legs.

An integrated U-tube and adsorbent unit comprising a plastic U-tube having first and second plastic legs and a plastic return bend, a plastic cover, adsorbent confined by said plastic cover, and said plastic cover being fused to said plastic U-tube.

An integrated U-tube and adsorbent unit comprising a plurality of molded plastic parts bonded to each other to define a U-tube having spaced legs and a return bend, adsorbent, and a cover containing said adsorbent between said spaced legs.

A U-tube comprising a plurality of molded parts bonded to each other to define spaced legs connected by a return bend which in turn define a conduit which extends through said spaced legs and said return bend.

A method of fabricating a U-tube comprising the steps of providing a plurality of molded parts, and bonding said plurality of molded parts to produce a U-tube having legs and a return bend having a conduit extending therethrough with said molded parts being located on opposite sides of said conduit.

An integrated U-tube and adsorbent unit comprising a plurality of molded plastic parts bonded to each other to produce a U-tube having legs and a return bend, said legs and said U-bend defining a conduit extending therethrough with said molded parts being located on opposite sides of said conduit, and adsorbent permanently retained in assembled relationship with said U-tube.

A method of fabricating an integrated U-tube and adsorbent unit comprising the steps of providing a plurality of molded parts, and bonding said plurality of molded parts to produce a U-tube having legs and a return bend having a conduit extending therethrough with said molded parts being located on opposite sides of said conduit, and causing adsorbent to be permanently retained in assembled relationship with said U-tube.

A U-tube comprising a plurality of molded plastic parts bonded to each other in side-by-side relationship to produce a U-tube having legs and a return bend, said legs and said return bend defining a conduit extending therethrough with said plurality of molded parts being located on opposite sides of said conduit.

A U-tube comprising a plurality of molded plastic parts bonded to each other to produce a U-tube having legs and a return bend, and said molded plastic parts including configurations such that when said plurality of molded plastic parts are bonded to each other in side-by-side relationship said configurations define sides of a conduit which extends through said legs and said return bend.