Abstract: A dual compartment powder cartridge including a porous shell formed by fusing the lapped side edge portions of a blank of sheet material to a central portion thereof to form two compartments, a pointed closed first end on the cartridge, powder in the dual compartments, and a sealed second end on the cartridge for closing the compartments. A machine for forming a dual compartment cartridge including a first station for scoring a strip of material with spaced parallel score lines, a second station for folding the strip of material along the score lines to cause opposite edge portions to be placed in lapped engagement with each other and with the central portion of the strip, and a third station for ultrasonically welding the lapped portions to provide a seam between two adjacent compartments.

Abstract: An adsorbent device including a porous casing containing adsorbent for placement between spaced pipe portions in a refrigerant receiver with the outer edge portions of the casing bearing against the spaced pipe portions, the adsorbent device including a clip having tabs at opposite ends thereof bonded to tabs on opposite sides of the casing, clip portions on the ends of the clip including a first U-shaped portion extending substantially in the direction of the body of the clip for loosely bracketing one of the pipe portions, and a second U-shaped portion extending substantially perpendicularly to the body of the clip for snapping onto the other pipe portion to thereby hold the casing of the adsorbent device between the spaced pipe portions. The clip is oriented relative to the casing so that the clip portion which snaps onto the pipe always extends substantially perpendicularly thereto, regardless of which pipe portion it snaps onto when the pipe portions are not parallel to each other.

Abstract: A dual compartment powder cartridge including a porous shell formed by fusing the lapped side edge portions of a blank of sheet material to a central portion thereof to form two compartments, a pointed closed first end on the cartridge, powder in the dual compartments, and a sealed second end on the cartridge for closing the compartments. A machine for forming a dual compartment cartridge including a first station for scoring a strip of material with spaced parallel score lines, a second station for folding the strip of material along the score lines to cause opposite edge portions to be placed in lapped engagement with each other and with the central portion of the strip, and a third station for ultrasonically welding the lapped portions to provide a seam between two adjacent compartments.

Abstract: An adsorbent cartridge for mounting on a surface which may be oriented in a downwardly facing attitude, the absorbent cartridge including the substantially rigid self-sustaining first side facing the surface and a second permeable side of flexible sheet material secured to the first side and facing away from the surface, absorbent in the cartridge, a frustoconical central portion formed integrally with the first side and located centrally therein, and a bearing surface secured to the frustoconical portion for receiving the head of a screw which extends through an aperture within the bearing surface and is received in a mounting post on the surface.

Abstract: An adsorbent device including a casing having a substantially semi-cylindrical wall for placement against spaced parallel pipes in a refrigerant receiver and a planar wall secured to the semi-cylindrical wall for placement next to another pipe spaced from the spaced parallel pipes so that the casing lies between the spaced parallel pipes and the other pipe, adsorbent in the casing, a tab formed integrally as an extension of the casing walls, and an aperture in the tab for receiving a strap for attachment to the tab to a pipe joining the spaced parallel pipes.

Abstract: A self-retaining adsorbent container including a cylindrical cup-shaped casing of porous material, adsorbent in the casing, a porous end wall secured to the edge of the cup-shaped casing at its open end by a rim which is more rigid than the material of the cup-shaped casing, and diametrically spaced concave indentations in the casing and the cover for receiving spaced pipes in a refrigerant receiver.

Abstract: A desiccant cartridge for insertion into a laboratory desiccator having a bowl with a side wall, a concave bottom wall, a plurality of spaced projections within the side wall located proximate the concave bottom wall, a shelf supported on the projections, and a space between the shelf and the concave bottom wall, the desiccant cartridge having a convex bottom wall and a planar perforated top wall joined by a seam, a plurality of circumferentially spaced indentations in the cartridge for placement in mating relationship with the projections, and desiccant confined between the bottom and top walls, the desiccant cartridge being located in the space below the shelf with its convex bottom wall in contiguous relationship to the concave bottom wall of the bowl and with its top wall being spaced from the shelf.

Abstract: An adsorbent cartridge for mounting in a housing including a casing consisting of an end wall and a cup-shaped member having a flexible substantially cylindrical wall, with the end wall and the cylindrical wall having their edge portions fused to each other to provide a radially outwardly extending rim for sealing engagement with the housing of a filter-drier, adsorbent in the housing, and the flexible cylindrical wall being adapted to bulge into sealing engagement with the housing when opposing forces directed toward each other are applied to the end wall and the bottom of the cup-shaped member. An adsorbent cartridge having the above structure and including an axially extending pipe fused to the end wall and the opposite end wall of the cup-shaped casing so as to provide an annular chamber for adsorbent, with the end walls extending radially inwardly beyond the pipe to provide rims for sealing engagement with a pipe member passing through the pipe of the adsorbent cartridge.

Abstract: An adsorbent unit for mounting on a refrigerant conduit in the top portion of a refrigerant receiver including first and second adsorbent containers having porous walls connected by a harness which is an extension of the walls of the containers, a tubular member secured to the harness for telescopic mounting onto an open end of the refrigerant conduit, the first container having a full pocket shape and the second container being U-shaped with a pair of legs on opposite sides of an opening therebetween, and the harness extending between the first container and the upper portion of one of the legs.