Desiccant cartridge retention device

A desiccant cartridge adapted for sealing mount on a fluid flow tube, said cartridge comprising a cup having spaced inner and outer wall portions coaxially disposed and connected by a transverse portion to define a chamber, said cup having an axial length and a top and bottom surface, said inner wall defining a sleeve adapted for coaxial reception over said fluid flow tube, said sleeve having a diameter gradually decreasing from said top surface and terminating at an area of maximum constriction positioned intermediate said top surface and said bottom surface, said area of maximum constriction adapted for resilient, snug compressive fit of said fluid flow tube.

A desiccant cartridge comprising:

• a cup having spaced inner and outer wall portions coaxially disposed and connected by a transverse portion to define a chamber having an opening, said inner wall portion comprising an outer surface and an inner engagement surface and defining a sleeve having first and second openings, said inner engagement surface having an inner diameter and comprising a midpoint intermediate said first and second openings, said inner diameter characterized by a first inner diameter at said first opening and a second inner diameter between said first and second openings, said sleeve tapering in a direction from said first opening toward said second opening to thereby form a maximum constriction area at said second inner diameter.

A desiccant cartridge adapted for fit within a receiver dryer or accumulator canister, said cartridge comprising a cup having spaced inner and outer wall portions coaxially disposed and connected by a transverse portion to define a chamber having an opening, said inner wall defining a sleeve having first and second openings, said sleeve being provided with a venturi restriction intermediate said first and second openings.

A desiccant cartridge adapted for snug reception within a canister having a fluid flow tube disposed therein, said cartridge comprising:

• a cup having spaced inner and outer wall portions coaxially disposed and connected by a transverse portion to define a chamber having a chamber opening, said outer wall having an outer surface and an inner surface, said inner wall portion comprising an outer surface and an inner engagement surface and defining a sleeve having first and second openings, said sleeve adapted to receive said fluid flow tube and said inner engagement surface adapted to secure said desiccant cartridge to said fluid flow tube so as to form a seal between said fluid flow tube and said sleeve, said inner engagement surface comprising a first flange projecting radially inwardly intermediate said first and second openings to form the seal, said outer wall of said cup including a second flange located intermediate said chamber opening and said transverse portion.