Filter device

Patent metadata

Field	Value
Publication number	US-2016199768-A1
Application number	US-201414917131-A
Country	US
Kind code	A1
Filing date	Sep 12, 2014
Priority date	Sep 12, 2013
Publication date	Jul 14, 2016
Grant date	—

Abstract

A filter device ( 7, 8 ) for a conduit ( 9, 10 ) comprises a gas-permeable pre-filter element ( 21, 23 ) and a gas-permeable, liquid-impermeable filter element ( 22, 24 ). The filter device ( 7, 8 ) is configured to be fluidly coupled to a conduit ( 9, 10 ) such that a gas can be caused to flow, in sequence, through the pre-filter element ( 21, 23 ), the filter element ( 22, 24 ) and then the conduit ( 9, 10 ). Such a filter device ( 7, 8 ) can for example be used in each of a vehicle hollow driveshaft ( 2 ) and a hollow wheel stub axle ( 6 ) forming a CV joint ( 11 ) having a compressed air supply line which passes therethrough, as is the case in some central tyre inflation systems (CTISs). Thus, compressed air can be supplied via said air supply line without the need for an additional fluid transfer device fluidly connecting the driveshaft and the stub axle's conduits ( 9, 10 ).

First claim

1 . A filter device for a conduit of an air supply line portion of a central tyre inflation system (CTIS), the filter device comprising:
a gas-permeable pre-filter element; and a gas-permeable, liquid-impermeable filter element; wherein the filter device is configured to be fluidly coupled to the conduit such that, a gas can flow, in sequence, through the pre-filter element, through the filter element, and through the conduit; and wherein the filter element is configured to be disposed within the conduit.

2 . The filter device of claim 1 , wherein the pre-filter element comprises a porous and/or fibrous material, and wherein said porous or fibrous material is foam, or a sponge.

3 . (canceled)

4 . The filter device according to claim 1 , wherein the filter element comprises a gas-permeable, liquid-impermeable membrane, and wherein the membrane is oleophobic.

5 . (canceled)

6 . The filter device of claim 1 , wherein the filter device is cylindrical.

7 . The filter device of claim 1 , wherein the pre-filter element are is configured to be disposed within said conduit and/or a port of said conduit.

8 . (canceled)

9 . The filter device of claim 1 , wherein the filter element is adjacent to, in contact with, or supported by the pre-filter element.

10 . The filter device of claim 1 , wherein the pre-filter element has a longitudinal thickness greater than a longitudinal thickness of the filter element.

11 . A central tyre inflation system (CTIS) air supply line portion comprising:
a conduit for passage of air for inflating a tyre; and a filter device comprising:
a gas-permeable pre-filter element; and
a gas-permeable, liquid-impermeable filter element;
wherein the filter device is configured to be fluidly coupled to the conduit such that a gas can flow, in sequence, through the pre-filter element, through the filter element, and through the conduit;
wherein the filter element is configured to be disposed within the conduit; and
wherein the filter device is fluidly coupled to said conduit.

12 . The CTIS air supply line portion of claim 11 , wherein the filter device is at least partially inserted into the conduit and/or wherein at least a portion of the conduit extends through a vehicle axle.

13 . (canceled)

14 . The CTIS air supply line portion of claim 12 , wherein a face of the pre-filter element is substantially level with an end surface of the vehicle axle, and wherein the vehicle axle is a driveshaft or a wheel stub axle.

15 - 16 . (canceled)

17 . An articulated joint comprising:
first and second hollow vehicle axles each having a respective internal conduit for passage of gas; first and second gas-permeable, liquid-impermeable filter devices; and an enclosure in fluid communication with said first and second conduits; wherein the first and second filter devices each comprise a gas-permeable pre-filter element and a gas-permeable, liquid-impermeable filter element; wherein the first filter device is fluidly coupled to the first conduit such that a gas can flow in sequence through the first filter device pre-filter element, through the first filter device filter element, and through the first conduit, wherein the second filter device is fluidly coupled to the second conduit such that a gas can flow in sequence through the second filter device pre-filter element, through the second filter device filter element, and through the second conduit; and, wherein the first and second filter elements are disposed within said first and second conduits, respectively.

18 - 22 . (canceled)

23 . The articulated joint of claim 17 , further comprising a clearing device that clears lubricant from one or more regions close to the first and/or the second filter devices.

24 . The articulated joint of to claim 23 , wherein the clearing device is configured to be activated when the articulated joint articulates, and wherein the clearing device comprises a wiper supported by an end of the first or second hollow vehicle axle.

25 - 26 . (canceled)

27 . A central tyre inflation system (CTIS), CTIS comprising the CTIS air supply line portion of claim 11 .

28 . A vehicle comprising the filter device of claim 1 .

29 - 30 . (canceled)

Assignees

• Jaguar Land Rover Ltd

Inventors

• Dunning Emma-Claire
• Hoare Edward
• Läänemets Laur
• Dodu Maelle

Classifications

• B01D46/0012

  In-line filters · CPC title

• B01D46/0023 Primary

  Operations & Transport · mapped topic

• B60C23/00

  Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements · CPC title

• B01D46/62

  connected in series · CPC title

• B60C23/00336 Primary

  on the axles · CPC title