Title of Invention

A DESICCANT CARTRIDGE HOUSING SYSTEM FOR A DRYING AND DISTRIBUTION UNIT FOR USE IN THE BRAKING CIRCUIT OF A MOTOR VEHICLE

Abstract A desiccant cartridge housing system for a drying aad distribution unit for use in the braking circuit of a motor vehicle accommodates a desiecant cartridge ; a retaining spring for the cartridge; a retainer member located between the roof of the housing and the top of die cartridge. First means are provided for engaging the top of the cartridge with the bottom of the retainer member; second means for engaging the top of the retainer member with the roof of the housing. The retainer member is made of a flexible material to enable it to be located between the roof of the housing and the top of Ae cartridge in aresiliently compressed state.
Full Text This invention relates to a desiccant cartridge housing system for a drying and distribution unit (hereinafter also referred to as DDU) for use in the braking circuit of a motor vehicle.
The main purpose of the DDU is to remove moisture from the compressed air in the braking circuit and to prevent any condensation of moisture from occurring in the vehicle air reservoirs, even in cases where the atmospheric temperature drops significantly.
Normally, the DDU is mounted in the vehicle in the vertical position and has acceptable resistance to vibrational forces acting on it in the vertical plane whenever the vehicle is in motion; but that is not to say that it has acceptable vibrational resistance in the horizontal pluie
As a matter of fact the usual cause for failure of the desiccant cartridge system is the vibrational force factor acting horizontally on the said system.

It is therefore an object of this invention to propose a desiccant cartridge housing system for a DDU which has acceptable resistance to vibrational forces in the horizontal direction also.
In the known desiccant cartridge housing system, the base of the cartridge is sufficiently supported within the housing, to render the cartridge acceptfld)Iy resistant to vibrational forces in the vertical plane; and this invention therefore is directed to give acceptable resistance to the cartridge against vibrational forces in the horizontal plane also.
By conferring such resistance to vibrational forces in the horizontal plane also, the cartridge becomes acceptably resistant to vibrational forces acting on the cartridge in any direction.
Various other features of this invention will be discernible from the following further description thereof given hereunder.
The desiccant cartridge housing system for a drying and distribution unit for use in the braking system of a motor vehtcle,according to this invention, accommodates a desiccant cartridge; a retaining spring for the cartridge; a retainer member located between the roof of tibe housing and the top of the cartridge; fu^st means for engaging the top

a resilient force on the roof T of the housing and on the top portion V of the desiccant cartridge. Additionally, the feature of the fu-st and second means engaging the retainer member with the roof of the housing as welt as with the top portion of the desiccant cartridge, results in the retainer member being securely held in place, in its location, thereby effectively resisting horizontal vibrational forces.
The retainer member has cut away portions E on its periphery which render it readily compressible while maintaining its flexibility, thus facilit^ing location of the said member between the roof T of the housing and the top V of the cartridge in a resiliently compressed state.
The first means comprise dimples Dl on the top V of the cartridge engaging with the bottom K of the retainer member R. The second means comprise dimples D2 on the roof T of the housing engaging witii the top L of the said retainer member.
It will be appreciated from the foregoing that various other embodiments of the desiccant cartridge housing system proposed herein are possible without departing from the scope and ambit of this invention.





We Claim :
1. A desiccant cartridge housing system for a drying and distribution unit for use in the braking circuit of a motor vehicle accommodating a desiccant cartridge ; a retaining spring for the cartridge; a retainer member located between the roof of the housing and the top of the car^idge; first means for engaging the top of the cartridge with the bottom of the retainer member; second means for engaging the top of the retainer member with the roof of the housing, the retainer member being made of a flexible material to enable it to be located between the roof of the housing and the top of the cartridge in a resiiientiy compressed state.
2. A desiccant cartridge housing system as claimed in Claim 1 wherein the retainer member is made of plastic.
3. A desiccant cartridge housing system as claimed in Claim 1 or Claim 2 wherein the retainer member has cut away portions on its periphery facilitating location of the said member between the roof of die housing and the top of the cartridge in a resiiientiy compressed state.
4. A desiccant cartridge housing system as claimed in any one of the preceding Claims wherein the first means comprise dimples

provided on the top of the cartridge engaging with the bottom of the retainer member; and wherein the second means comprise dimples provided on the roof of the housing engaging with top portions of the retainer member.
5. A desiccant cartridge housing system for a drying and distribution unit for use in the braking circuit of a motor vehicle substantially as herein described with reference to and as illustrated in the accompanying drawings.


Documents:

634-che-2003-abstract.pdf

634-che-2003-claims duplicate.pdf

634-che-2003-claims original.pdf

634-che-2003-correspondnece-others.pdf

634-che-2003-correspondnece-po.pdf

634-che-2003-description(complete) duplicate.pdf

634-che-2003-description(complete) original.pdf

634-che-2003-drawings.pdf

634-che-2003-form 1.pdf

634-che-2003-form 19.pdf

634-che-2003-form 26.pdf


Patent Number 199117
Indian Patent Application Number 634/CHE/2003
PG Journal Number 30/2009
Publication Date 24-Jul-2009
Grant Date 28-Feb-2006
Date of Filing 04-Aug-2003
Name of Patentee M/S. SUNDARAM CLAYTON LIMITED
Applicant Address JAYALAKSHMI ESTATES, NO. 8 HADDOWS ROAD, CHENNAI 600 006
Inventors:
# Inventor's Name Inventor's Address
1 SUNDARAMAHALINGAM SELVAMANI M/S. SUNDARAM CLAYTON LIMITED JAYALAKSHMI ESTATES, NO. 8 HADDOWS ROAD, CHENNAI 600 006
PCT International Classification Number BOID532/26
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 NA