CONTROLLED RELEASE OF ADDITIVES IN FLUID SYSTEMS

• US 20090283466A1
• Filed: 07/22/2009
• Published: 11/19/2009
• Est. Priority Date: 08/24/2001
• Status: Active Grant

• Current Assignee: Cummins Filtration Incorporated (Cummins Incorporated), Dober Chemical Corporation
• Original Assignee: Cummins Filtration Incorporated (Cummins Incorporated), Dober Chemical Corporation
• Inventors: Verdegan, Barry M., Martin, Harold, Drozd, Joseph C., Hudgens, Doug, Blakemore, Thomas, Kelly, Dennis
• Granted Patent: US 8,109,287 B2
• Time in Patent Office: Days
• US Class Current: 210/209
• CPC Class Codes: B01D 35/30 Filter housing constructions
• CPC Class Codes: B01J 4/04 using osmotic pressure using membranes, porous plates
• CPC Class Codes: C10M 161/00 Lubricating compositions characterised by the additive being a mixture of a macromolecular compound and a non-macromolecular compound, each of these compounds being essential
• CPC Class Codes: C10M 163/00 Lubricating compositions characterised by the additive being a mixture of a compound of unknown or incompletely defined constitution and a non-macromolecular compound, each of these compounds being essential
• CPC Class Codes: C10M 165/00 Lubricating compositions characterised by the additive being a mixture of a macromolecular compound and a compound of unknown or incompletely defined constitution, each of these compounds being essential
• CPC Class Codes: C10M 167/00 Lubricating compositions characterised by the additive being a mixture of a macromolecular compound, a non-macromolecular compound and a compound of unknown or incompletely defined constitution, each of these compounds being essential
• CPC Class Codes: C10M 171/00 Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated chemically defined ingredients C10M101/00 - C10M169/00; petroleum fractions C10M101/02, C10M121/02, C10M159/04
• CPC Class Codes: C10M 175/0091 Treatment of oils in a continuous lubricating circuit (e.g. motor oil system)
• CPC Class Codes: C10N 2040/08 Hydraulic fluids, e.g. brake-fluids
• CPC Class Codes: C10N 2040/25 Internal-combustion engines
• CPC Class Codes: C10N 2050/12 Micro capsules
• CPC Class Codes: F01M 9/02 having means for introducing additives to lubricant
• CPC Class Codes: F01P 11/06 Cleaning in general B08B; Combating corrosion in general C23F
• CPC Class Codes: F01P 2011/068 chemically
• CPC Class Codes: Y10T 137/4891 With holder for solid, flaky or pulverized material to be dissolved or entrained

Abstract

A container (1) for releasing a chemical additive (7) in a fluid material selected from a lubricant or hydraulic fluid composition comprises a fluid material-impermeable casing (3) having a hollow interior and an additive composition (7) comprising at least one fluid material-soluble additive. The additive (7) is held within the container (1) by a least one fluid material-permeable element (11) provided at or near an opening (13) in the casing (1) and is effective to provide for release of additive(s) (7) into the fluid material. Methods of releasing additives (7) into fluid material are also provided.

Claims

1-34. -34. (canceled)

35. A seal assembly comprising:

a fluid material-permeable membrane sized and adapted to be positioned in or near an opening in a casing defining a hollow interior containing a fluid material additive effective to provide a benefit to and soluble in a fluid material selected from the group consisting of a liquid lubricant composition and a hydraulic fluid composition, the membrane is adapted to be positioned so that substantially all of the fluid material additive leaving the hollow interior through the opening passes through the membrane; and

a seal member sized and adapted to be positioned relative to the opening in the casing to prevent fluid material additive leaving the hollow interior through the opening when the seal member is intact.

36. The seal member of claim 35 wherein the seal member is adapted to be compromised in the presence of a fluid material selected from the group consisting of a liquid lubricant composition and a hydraulic fluid composition, thereby allowing fluid material additive to leave the hollow interior through the opening.

37. The seal assembly of claim 36 wherein the seal member is at least partially fluid material-soluble.

38. The seal assembly of claim 35 wherein the seal member comprises a support structure and a fluid material-soluble polymer.

39. The seal assembly of claim 38 wherein the support structure includes at least one of a wire screen and a woven cloth.

40. The seal assembly of claim 35 which further comprises at least one retention member sized and adapted to be positioned to be effective in retaining the membrane in a substantially fixed position relative to the casing.

41-43. -43. (canceled)