Desiccant canister for desiccants and other particulate material

• US 5,730,785 A
• Filed: 04/01/1993
• Issued: 03/24/1998
• Est. Priority Date: 04/01/1993
• Status: Expired due to Fees

• Current Assignee: Multisorb Technologies Incorporated (FGI Equity LLC)
• Original Assignee: Multisorb Technologies Incorporated (FGI Equity LLC)
• Inventors: Iwaniszek, Joseph L., Idol, Ronald C.
• Primary Examiner(s): Bushey, C. Scott
• Application Number:
  US08/041,715
• Time in Patent Office: 1,818 Days
• Field of Search: 95/90, 95/91, 96/108, 96/118, 206/204, 206/524.4, 220/307, 220/367.1, 220/601
• US Class Current: 96/108
• CPC Class Codes: B65D 11/26 Local reinforcements, e.g. adjacent to closures
• CPC Class Codes: B65D 51/1611 by means of an orifice, capillary or labyrinth passage B65D51/1616, B65D51/1622 take precedence
• CPC Class Codes: B65D 81/268 the absorber being enclosed in a small pack, e.g. bag, included in the package

Abstract

A canister for a desiccant or other particulate material including a substantially cylindrical molded plastic body having an integral end wall and an inner surface and an open end, a cap having an inner surface and a portion which enters the open end of the body and is retained therein by a bead and groove connection, desiccant in the canister, and very small apertures in the cap and end wall, the apertures diverging in diameter from the inner surfaces of the cap and end wall toward the outer surfaces thereof to thereby tend to impede passage of the desiccant out of the canister and also tend to obviate clogging of the apertures.

Claims

1. A canister containing a desiccant comprising a molded plastic body, an end wall on said body having an inner surface and an outer surface, a molded plastic cap having a cap wall, an inner surface and an outer surface on said cap wall, means for securing said cap on said body in opposition to said end wall, desiccant particles in said body, at least one of said wall and said cap wall having an inner surface which is substantially planar, and apertures in at least one of said cap wall and end wall, said apertures terminating at said substantially planar inner surface and diverging in diameter in the direction from said inner surface toward said outer surface of said wall in which they are located, and said apertures at said inner surface being of smaller size than the size of said desiccant particles.

2. A canister as set forth in claim 1 wherein said apertures are in both said end wall and said cap wall.

3. A canister as set forth in claim 1 wherein said end wall is a molded integral part of said molded plastic body.

4. A canister as set forth in claim 3 wherein said apertures are in both said end wall and said cap wall.

5. A canister as set forth in claim 1 wherein said body at the opposite end thereof from said end wall terminates at an end surface surrounding an opening, and wherein said body includes an inner surface, and wherein said cap covers said opening, said cap comprising a first portion which is inserted into said body through said opening, a flange on said cap of larger diameter than said first portion of said cap, a flange surface on said flange for abutting said end surface, and interengaging means between said inner surface of said body and said first portion of said cap for securing said cap on said body.

6. A canister as set forth in claim 5 wherein said body is substantially cylindrical, and wherein said first portion of said cap is cylindrical, and wherein said interengaging means comprise a bead and groove connection.

7. A canister as set forth in claim 6 wherein said bead and groove connection comprises an annular bead on said first portion of said cap, and an annular groove in said inner surface of said body.

8. A canister as set forth in claim 5 wherein said body is substantially cylindrical and wherein said flange is substantially cylindrical, and wherein said flange is of slightly less diameter than the diameter of said body.

9. A canister as set forth in claim 8 wherein said first portion is cylindrical, and wherein said interengaging means comprise a bead and groove connection.

10. A canister as set forth in claim 9 wherein said bead and groove connection comprises an annular bead on said first portion, and an annular groove in said inner surface of said body.

11. A canister as set forth in claim 5 wherein said first portion of said cap is of substantial thickness to reinforce said body proximate said opening.

12. A canister comprising a molded plastic body, an end wall on said body having an inner surface and an outer surface, a molded plastic cap having a cap wall, an inner surface and an outer surface on said cap wall, means for securing said cap on said body in opposition to said end wall, at least one of said end wall and said cap wall having an inner surface which is substantially planar, and apertures in at least one of said cap wall and end wall, said apertures terminating at said substantially planar inner surface and diverging in diameter in the direction from said inner surface toward said outer surface of said wall in which they are located.

13. A canister as set forth in claim 12 wherein said apertures are in both said end wall and said cap wall.

14. A canister as set forth in claim 12 wherein said body at the opposite end thereof from said end wall terminates at an end surface surrounding an opening, and wherein said body includes an inner surface, and wherein said cap covers said opening, said cap comprising a first portion which is inserted into said body through said opening, a flange on said cap of larger diameter than said first portion of said cap, a flange surface on said flange for abutting said end surface, and interengaging means between said inner surface of said body and said first portion of said cap for securing said cap on said body.

15. A canister as set forth in claim 14 wherein said body is substantially cylindrical, and wherein said first portion of said cap is cylindrical, and wherein said interengaging means comprise a bead and groove connection.

16. A canister as set forth in claim 15 wherein said bead and groove connection comprises an annular bead on said first portion of said cap, and an annular groove in said inner surface of said body.

17. A canister as set forth in claim 12 wherein said body is substantially cylindrical and wherein said flange is substantially cylindrical, and wherein said flange is of slightly less diameter than the diameter of said body.

18. A canister containing a desiccant comprising a molded plastic body, an end wall on said body having an inner surface and an outer surface, a cap having a cap wall, an inner surface and an outer surface on said cap wall, means for securing said cap on said body in opposition to said end wall, desiccant particles in said body, and apertures in at least one of said cap wall and end wall, said apertures diverging in diameter in the direction from said inner surface toward said outer surface of said wall in which they are located, said apertures at said inner surface being of smaller size than the size of said desiccant particles, and said diameter of said apertures at said inner surface being of a size of about 0.003 inches.

19. A canister containing a desiccant comprising a molded plastic body, an end wall on said body having an inner surface and an outer surface, a cap having a cap wall, an inner surface and an outer surface on said cap wall, means for securing said cap on said body in opposition to said end wall, desiccant particles in said body, and apertures in at least one of said cap wall and end wall, said apertures diverging in diameter in the direction from said inner surface toward said outer surface of said wall in which they are located, said apertures at said inner surface being of smaller size than the size of said desiccant particles, and said apertures being frustoconical and diverging in an amount of between about one and two degrees.

20. A canister as set forth in claim 19 wherein said apertures are in both said end wall and cap wall.

21. A canister containing a desiccant comprising a molded plastic body, an end wall on said body having an inner surface and an outer surface, a cap having a cap wall, an inner surface and an outer surface on said cap wall, means for securing said cap on said body in opposition to said end wall, desiccant particles in said body, and apertures in both said cap wall and end wall, said apertures diverging in diameter in the direction from said inner surface toward said outer surface of said wall in which they are located, said apertures at said inner surface being of smaller size than the size of said desiccant particles, and said diameter of said apertures at said inner surface being of a size of about 0.003 inches.

22. A canister as set forth in claim 21 wherein said apertures are frustoconical and diverge in an amount of between about one and two degrees.

23. A canister containing a desiccant comprising a molded plastic body, an end wall on said body having an inner surface and an outer surface, a cap having a cap wall, an inner surface and an outer surface on said cap wall, means for securing said cap on said body in opposition to said end wall, desiccant particles in said body, and apertures in both said cap wall and end wall, said apertures diverging in diameter in the direction from said inner surface toward said outer surface of said wall in which they are located, said apertures at said inner surface being of smaller size than the size of said desiccant particles, said end wall being a molded integral part of said molded plastic body, and said apertures being frustoconical and diverging in an amount of between about one and two degrees.

24. A canister as set forth in claim 23 wherein said diameter of said apertures at said inner surface is of a size of about 0.003 inches.

25. A canister containing a desiccant comprising a molded plastic body, an end wall on said body having an inner surface and an outer surface, a cap having a cap wall, an inner surface and an outer surface on said cap wall, means for securing said cap on said body in opposition to said end wall, desiccant particles in said body, and apertures in at least one of said cap wall and end wall, said apertures diverging in diameter in the direction from said inner surface toward said outer surface of said wall in which they are located, said apertures at said inner surface being of smaller size than the size of said desiccant particles, said body at the opposite end thereof from said end wall terminating at an end surface surrounding an opening, and said body including an inner surface, and said cap covering said opening, said cap comprising a first portion which is inserted into said body through said opening, a flange on said cap of larger diameter than said first portion of said cap, a flange surface on said flange for abutting said end surface, a bead and groove connection between said inner surface of said body and said first portion of said cap for securing said cap on said body, said body being substantially cylindrical, and said first portion of said cap being cylindrical, said bead and groove connection comprising an annular bead on said first portion of said cap, an annular groove in said inner surface of said body, said inner surface of said body including an inner surface portion which extends axially between said groove and said end surface of said body, and said first portion of said cap including a cap surface which extends axially between said bead and said flange, and said inner surface portion of said body being of slightly longer axial length than the axial length of said cap surface to thereby cause said flange to be seated in firm abutting engagement with said end surface of said body when said bead is located in said groove.

26. A canister containing a desiccant comprising a molded plastic body, an end wall on said body having an inner surface and an outer surface, a cap having a cap wall, an inner surface and an outer surface on said cap wall, means for securing said cap on said body in opposition to said end wall, desiccant particles in said body, and apertures in at least one of said cap wall and end wall, said apertures diverging in diameter in the direction from said inner surface toward said outer surface of said wall in which they are located, said apertures at said inner surface being of smaller size than the size of said desiccant particles, said body at the opposite end thereof from said end wall terminating at an end surface surrounding an opening, and said body including an inner surface, and said cap covering said opening, said cap comprising a first portion which is inserted into said body through said opening, a flange on said cap of larger diameter than said first portion of said cap, a flange surface on said flange for abutting said end surface, a bead and groove connection between said inner surface of said body and said first portion of said cap for securing said cap on said body, said body being substantially cylindrical and said flange being substantially cylindrical, and said flange being of slightly less diameter than the diameter of said body, said first portion being cylindrical, said bead and groove connection comprising an annular bead on said first portion, and an annular groove in said inner surface of said body, said inner surface of said body including an inner surface portion which extends axially between said groove and said end surface of said body, and said first portion of said cap including a cap surface which extends axially between said bead and said flange, and said inner surface portion of said body being of slightly longer axial length than the axial length of said cap surface to thereby cause said flange to be seated in firm abutting engagement with said end surface of said body when said bead is located in said groove.

27. A canister comprising a molded plastic body, an end wall on said body having an inner surface and an outer surface, a cap having a cap wall, an inner surface and an outer surface on said cap wall, means for securing said cap on said body in opposition to said end wall, and apertures in both said cap wall and end wall, said apertures diverging in diameter in the direction from said inner surface toward said outer surface of said wall in which they are located, and said apertures being frustoconical and diverging in an amount of between about one and two degrees.

28. A canister comprising a molded plastic body, an end wall on said body having an inner surface and an outer surface, a cap having a cap wall, an inner surface and an outer surface on said cap wall, means for securing said cap on said body in opposition to said end wall, and apertures in at least one of said cap wall and end wall, said apertures diverging in diameter in the direction from said inner surface toward said outer surface of said wall in which they are located, and said apertures being frustoconical and diverging in an amount of between about one and two degrees.

29. A canister comprising a molded plastic body, an end wall on said body having an inner surface and an outer surface, a cap having a cap wall, an inner surface and an outer surface on said cap wall, means for securing said cap on said body in opposition to said end wall, and apertures in at least one of said cap wall and end wall, said apertures diverging in diameter in the direction from said inner surface toward said outer surface of said wall in which they are located, said body at the opposite end thereof from said end wall terminating at an end surface surrounding an opening, and said body including an inner surface, and said cap covering said opening, said cap comprising a first portion which is inserted into said body through said opening, a flange on said cap of larger diameter than said first portion of said cap, a flange surface on said flange for abutting said end surface, a bead and groove connection between said inner surface of said body and said first portion of said cap for securing said cap on said body, said body being substantially cylindrical, and said first portion of said cap being cylindrical, said bead and groove connection comprising an annular bead on said first portion of said cap, and an annular groove in said inner surface of said body, said inner surface of said body including an inner surface portion which extends axially between said groove and said end surface of said body, and said first portion of said cap including a cap surface which extends axially between said bead and said flange, and said inner surface portion of said body being of slightly longer axial length than the axial length of said cap surface to thereby cause said flange to be seated in firm abutting engagement with said end surface of said body when said bead is located in said groove.