Aaf Ltd.

United Kingdom

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        Patent 19
        Trademark 2
Jurisdiction
        World 11
        United States 6
        Canada 2
        Europe 2
Date
2025 4
Before 2021 17
IPC Class
B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours 10
F02C 7/057 - Control or regulation 6
F02C 7/143 - Cooling of plants of fluids in the plant of working fluid before or between the compressor stages 6
B01D 46/02 - Particle separators, e.g. dust precipitators, having hollow filters made of flexible material 4
F02C 7/052 - Air intakes for gas-turbine plants or jet-propulsion plants having provisions for obviating the penetration of damaging objects or particles with dust-separation devices 4
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NICE Class
01 - Chemical and biological materials for industrial, scientific and agricultural use 2
07 - Machines and machine tools 2
11 - Environmental control apparatus 2
37 - Construction and mining; installation and repair services 2
42 - Scientific, technological and industrial services, research and design 2

1.

GASKET ASSEMBLY FOR A FILTER DEVICE WITH A TRANSITION POINT

      
Application Number EP2025053953
Publication Number 2025/201729
Status In Force
Filing Date 2025-02-14
Publication Date 2025-10-02
Owner AAF LTD (United Kingdom)
Inventor
  • Smith, Mark
  • White, John
  • Turnbull, Graeme Denton

Abstract

The present invention relates to a gasket assembly for filter devices comprising a mounting element, at least one first filter element, at least one second filter element arranged adjacent to the first filter element, and a first gasket being pressed against the mounting element and the second filter element by means of the first filter element, wherein a pressure means is provided that is intended to additionally press the transition point between the mounting element and the second filter element.

IPC Classes  ?

  • B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D 46/121 - V-type arrangements

2.

MOUNTING ASSEMBLY FOR A FILTER DEVICE WITH A CONNECTING ELEMENT

      
Application Number EP2025053955
Publication Number 2025/201731
Status In Force
Filing Date 2025-02-14
Publication Date 2025-10-02
Owner AAF LTD (United Kingdom)
Inventor
  • Smith, Mark
  • White, John
  • Turnbull, Graeme Denton

Abstract

The present invention relates to a mounting assembly for a filter device comprising a mounting element, at least one first filter element being fixed to the mounting element by means of a first connecting element, and at least one second filter element being arranged adjacent to the first filter element, wherein the first connecting element is to be covered by locating the second filter element to the mounting element.

IPC Classes  ?

  • B01D 24/00 - Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
  • B01D 46/58 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in parallel
  • B01D 46/62 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series

3.

MOUNTING ASSEMBLY FOR A FILTER DEVICE WITH A FIXTURE DEVICE

      
Application Number EP2025053954
Publication Number 2025/201730
Status In Force
Filing Date 2025-02-14
Publication Date 2025-10-02
Owner AAF LTD (United Kingdom)
Inventor
  • Smith, Mark
  • White, John
  • Turnbull, Graeme Denton

Abstract

The present invention relates to a mounting assembly for filter devices comprising a first fixed component and a first filter element mounted to the first fixed component by a fixture device, wherein the fixture device is formed with a hinge.

IPC Classes  ?

  • B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours

4.

FILTER ELEMENT AND FILTER DEVICE AT WHICH A LIQUID IS SEPARATED

      
Application Number EP2025053956
Publication Number 2025/201732
Status In Force
Filing Date 2025-02-14
Publication Date 2025-10-02
Owner AAF LTD (United Kingdom)
Inventor Herrmann, Torsten

Abstract

The present invention relates to a filter element having a frame for fixing a filter medium for cleaning a fluid stream guided through the filter medium, in which a liquid is separated from the fluid stream. At least one drain channel is provided in the frame for draining off the liquid from the filter element.

IPC Classes  ?

  • B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D 46/10 - Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
  • B01D 46/121 - V-type arrangements
  • B01D 46/52 - Particle separators, e.g. dust precipitators, using filters embodying folded material

5.

Method of running an air inlet system

      
Application Number 15738974
Grant Number 10871107
Status In Force
Filing Date 2016-06-23
First Publication Date 2018-11-08
Grant Date 2020-12-22
Owner AAF Ltd (United Kingdom)
Inventor Owen, Charles Melvin

Abstract

The present embodiments disclose a method of running an air inlet system upstream of one or more inlet air filters of a device protected by air filtration, wherein the method comprises: regulating the relative air humidity of the inlet air at the one or more inlet air filters in dependence of the inlet air filters differential pressure.

IPC Classes  ?

  • F02C 7/057 - Control or regulation
  • F02C 7/052 - Air intakes for gas-turbine plants or jet-propulsion plants having provisions for obviating the penetration of damaging objects or particles with dust-separation devices
  • F02C 7/143 - Cooling of plants of fluids in the plant of working fluid before or between the compressor stages
  • F24F 11/46 - Improving electric energy efficiency or saving
  • F24F 11/30 - Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
  • F24F 5/00 - Air-conditioning systems or apparatus not covered by group or

6.

System for reducing inlet air temperature of a device

      
Application Number 15738942
Grant Number 10781750
Status In Force
Filing Date 2016-06-23
First Publication Date 2018-06-21
Grant Date 2020-09-22
Owner AAF Ltd (United Kingdom)
Inventor Owen, Charles Melvin

Abstract

The present embodiments disclose a system for reducing inlet air temperature of a device, including: an air inlet, a fogging system that provides air cooling, wherein the fogging system includes at least one low pressure rotary atomiser working at a pressure that is, for example, between 0.5 and 6 bar, and one or more air filters.

IPC Classes  ?

  • F02C 7/057 - Control or regulation
  • F02C 7/052 - Air intakes for gas-turbine plants or jet-propulsion plants having provisions for obviating the penetration of damaging objects or particles with dust-separation devices
  • F02C 7/143 - Cooling of plants of fluids in the plant of working fluid before or between the compressor stages
  • F24F 11/46 - Improving electric energy efficiency or saving
  • F24F 11/30 - Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
  • F24F 5/00 - Air-conditioning systems or apparatus not covered by group or

7.

Flow control device for a self-cleaning gas filtration system

      
Application Number 15553397
Grant Number 10814262
Status In Force
Filing Date 2016-02-24
First Publication Date 2018-03-15
Grant Date 2020-10-27
Owner AAF LTD. (United Kingdom)
Inventor
  • Jackson, Paul
  • Smith, Mark
  • Nessi, Rodrigo

Abstract

A flow control device for controlling fluid flow into a filter cartridge. The flow control device comprises a hollow body comprising a fluid flow inlet and a fluid flow outlet. The flow control device is configured to split fluid flowing toward the filter cartridge into at least two distinct flow streams, a first distinct flow stream of the at least two distinct flow streams being a flow stream which flows into the hollow body through the fluid flow inlet and out of the hollow body through the fluid flow outlet, and a second distinct flow stream of the at least two distinct flow streams being a flow stream which does not flow into the hollow body through the fluid flow inlet and out of the hollow body through the fluid flow outlet.

IPC Classes  ?

  • B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D 46/24 - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
  • B05B 1/00 - Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means

8.

Sound suppression apparatus

      
Application Number 15500948
Grant Number 10458589
Status In Force
Filing Date 2015-07-15
First Publication Date 2017-08-03
Grant Date 2019-10-29
Owner AAF Ltd. (United Kingdom)
Inventor
  • Hill, James Matthew
  • Malecki, Colin Alexander
  • Williams, Paul Timothy
  • Abom, Mats
  • Kirby, Raymond

Abstract

A sound suppression apparatus for installation inside a gas transport duct is provided. The sound suppression apparatus comprises a resistive sound-absorbing element (110) and a housing providing a reactive sound-attenuating element (130) communicating with a surrounding of the apparatus via opening in an outer surface of the housing. An outer surface of the sound suppression apparatus comprises an outer surface of the resistive sound-absorbing element and the outer surface of the housing. A gas transport duct comprising the sound suppression apparatus is also provided.

IPC Classes  ?

  • F16L 55/033 - Noise absorbers
  • F24F 13/24 - Means for preventing or suppressing noise
  • G10K 11/172 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
  • G10K 11/16 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
  • F01N 1/08 - Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
  • G10K 11/175 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effectsMasking sound
  • F01N 1/02 - Silencing apparatus characterised by method of silencing by using resonance
  • F01N 1/04 - Silencing apparatus characterised by method of silencing by using resonance having sound-absorbing materials in resonance chambers
  • F01N 1/10 - Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials
  • F01N 1/24 - Silencing apparatus characterised by method of silencing by using sound-absorbing materials
  • F02M 35/12 - Intake silencers

9.

N-HANCE

      
Application Number 016974701
Status Registered
Filing Date 2017-07-11
Registration Date 2017-11-07
Owner AAF Ltd (United Kingdom)
NICE Classes  ?
  • 01 - Chemical and biological materials for industrial, scientific and agricultural use
  • 07 - Machines and machine tools
  • 11 - Environmental control apparatus
  • 37 - Construction and mining; installation and repair services
  • 42 - Scientific, technological and industrial services, research and design

Goods & Services

Filtering media of chemical and non-chemical substances included in the class. Filters being parts of machines; Filters being parts of gas turbines; Filters for machines; Filters for gas turbines; Filters for turbines; Anti-pollution devices for motors and engines; Filter housings being parts of machines; Filter housings, being parts of gas turbines; Dust separators. Filters and filter media for industrial and commercial purposes for the purification of air; Air filters for industrial installations; Air filtering installations; Filters for cleaning air; Air cleaner inserts. Installation and repair of filters for machines, motors, engines or gas turbines. Consultancy relating to filtration technology; Research and development in the field of filtering technology.

10.

Miscellaneous Design

      
Application Number 016974693
Status Registered
Filing Date 2017-07-11
Registration Date 2017-11-07
Owner AAF Ltd (United Kingdom)
NICE Classes  ?
  • 01 - Chemical and biological materials for industrial, scientific and agricultural use
  • 07 - Machines and machine tools
  • 11 - Environmental control apparatus
  • 37 - Construction and mining; installation and repair services
  • 42 - Scientific, technological and industrial services, research and design

Goods & Services

Filtering media of chemical and non-chemical substances included in the class. Filters being parts of machines; Filters being parts of gas turbines; Filters for machines; Filters for gas turbines; Filters for turbines; Anti-pollution devices for motors and engines; Filter housings being parts of machines; Filter housings, being parts of gas turbines; Dust separators. Filters and filter media for industrial and commercial purposes for the purification of air; Air filters for industrial installations; Air filtering installations; Filters for cleaning air; Air cleaner inserts. Installation and repair of filters for machines, motors, engines or gas turbines. Consultancy relating to filtration technology; Research and development in the field of filtering technology.

11.

SYSTEM FOR REDUCING INLET AIR TEMPERATURE OF A DEVICE

      
Document Number 02990761
Status In Force
Filing Date 2016-06-23
Open to Public Date 2016-12-29
Grant Date 2019-09-24
Owner AAF LTD (United Kingdom)
Inventor Owen, Charles Melvin

Abstract

The present embodiments disclose a system (100) for reducing inlet air temperature of a device, comprising: a fogging system that provides air cooling, wherein the fogging system comprises at least one low pressure atomiser (110).

IPC Classes  ?

  • F02C 7/052 - Air intakes for gas-turbine plants or jet-propulsion plants having provisions for obviating the penetration of damaging objects or particles with dust-separation devices
  • F02C 7/057 - Control or regulation
  • F02C 7/143 - Cooling of plants of fluids in the plant of working fluid before or between the compressor stages

12.

METHOD OF RUNNING AN AIR INLET SYSTEM

      
Application Number IB2016053744
Publication Number 2016/207828
Status In Force
Filing Date 2016-06-23
Publication Date 2016-12-29
Owner AAF LTD (United Kingdom)
Inventor Owen, Charles Melvin

Abstract

The present embodiments disclose a method of running an air inlet system upstream of one or more inlet air filters of a device protected by air filtration, wherein the method comprises: regulating the relative air humidity of the inlet air at the one or more inlet air filters in dependence of the inlet air filters differential pressure.

IPC Classes  ?

  • F02C 7/057 - Control or regulation
  • F02C 7/143 - Cooling of plants of fluids in the plant of working fluid before or between the compressor stages
  • F02C 7/047 - Heating to prevent icing

13.

SYSTEM FOR REDUCING INLET AIR TEMPERATURE OF A DEVICE

      
Application Number IB2016053745
Publication Number 2016/207829
Status In Force
Filing Date 2016-06-23
Publication Date 2016-12-29
Owner AAF LTD (United Kingdom)
Inventor Owen, Charles Melvin

Abstract

The present embodiments disclose a system (100) for reducing inlet air temperature of a device, comprising: a fogging system that provides air cooling, wherein the fogging system comprises at least one low pressure atomiser (110).

IPC Classes  ?

  • F02C 7/057 - Control or regulation
  • F02C 7/143 - Cooling of plants of fluids in the plant of working fluid before or between the compressor stages
  • F02C 7/052 - Air intakes for gas-turbine plants or jet-propulsion plants having provisions for obviating the penetration of damaging objects or particles with dust-separation devices

14.

METHOD OF RUNNING AN AIR INLET SYSTEM

      
Document Number 02990762
Status In Force
Filing Date 2016-06-23
Open to Public Date 2016-12-29
Grant Date 2021-02-09
Owner AAF LTD (United Kingdom)
Inventor Owen, Charles Melvin

Abstract

The present embodiments disclose a method of running an air inlet system upstream of one or more inlet air filters of a device protected by air filtration, wherein the method comprises: regulating the relative air humidity of the inlet air at the one or more inlet air filters in dependence of the inlet air filters differential pressure.

IPC Classes  ?

  • F02C 7/057 - Control or regulation
  • F02C 7/143 - Cooling of plants of fluids in the plant of working fluid before or between the compressor stages
  • F02M 31/20 - Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for cooling
  • F02M 35/024 - Air cleaners using filters, e.g. moistened

15.

FLOW CONTROL DEVICE FOR A SELF-CLEANING GAS FILTRATION SYSTEM

      
Application Number EP2016053845
Publication Number 2016/142172
Status In Force
Filing Date 2016-02-24
Publication Date 2016-09-15
Owner AAF LTD. (United Kingdom)
Inventor
  • Jackson, Paul
  • Smith, Mark
  • Nessi, Rodrigo

Abstract

A flow control device for controlling fluid flow into a filter cartridge. The flow control device comprises a hollow body comprising a fluid flow inlet and a fluid flow outlet. The flow control device is configured to split fluid flowing toward the filter cartridge into at least two distinct flow streams, a first distinct flow stream of the at least two distinct flow streams being a flow stream which flows into the hollow body through the fluid flow inlet and out of the hollow body through the fluid flow outlet, and a second distinct flow stream of the at least two distinct flow streams being a flow stream which does not flow into the hollow body through the fluid flow inlet and out of the hollow body through the fluid flow outlet.

IPC Classes  ?

  • B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D 46/24 - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies

16.

SOUND SUPPRESSION APPARATUS

      
Application Number EP2015066153
Publication Number 2016/020159
Status In Force
Filing Date 2015-07-15
Publication Date 2016-02-11
Owner AAF LTD. (United Kingdom)
Inventor
  • Hill, James Matthew
  • Malecki, Colin Alexander
  • Williams, Paul Timothy
  • Åbom, Mats
  • Kirby, Raymond

Abstract

A sound suppression apparatus for installation inside a gas transport duct is provided. The sound suppression apparatus comprises a resistive sound-absorbing element (110) and a housing providing a reactive sound-attenuating element (130) communicating with a surrounding of the apparatus via opening in an outer surface of the housing. An outer surface of the sound suppression apparatus comprises an outer surface of the resistive sound-absorbing element and the outer surface of the housing. A gas transport duct comprising the sound suppression apparatus is also provided.

IPC Classes  ?

  • F16L 55/033 - Noise absorbers
  • F02M 35/12 - Intake silencers
  • F01N 1/08 - Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
  • F24F 13/24 - Means for preventing or suppressing noise
  • G10K 11/16 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
  • G10K 11/172 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
  • G10K 11/175 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effectsMasking sound

17.

Filter assembly

      
Application Number 14123457
Grant Number 09308483
Status In Force
Filing Date 2012-06-01
First Publication Date 2014-09-11
Grant Date 2016-04-12
Owner AAF LTD. (United Kingdom)
Inventor
  • Jackson, Paul
  • Donaldson, Jamie

Abstract

A filter assembly is provided which is particularly suitable for use in filtering intake air for gas turbines. The filter assembly (6) includes a final filter (9) and a pre-filter (8) which are directly engageable one with the other to provide a complete filter assembly. By so providing, pre-filter units may easily be removed and replaced in a compact configuration. A kit of parts is also provided.

IPC Classes  ?

  • B01D 46/12 - Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
  • B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D 46/02 - Particle separators, e.g. dust precipitators, having hollow filters made of flexible material

18.

Filter assembly, and pre-filter device and pre-filter mounting plate therefor

      
Application Number 13825731
Grant Number 09061228
Status In Force
Filing Date 2011-09-15
First Publication Date 2014-05-15
Grant Date 2015-06-23
Owner AAF LTD. (United Kingdom)
Inventor Jackson, Paul

Abstract

a) of the mounting support (11) so that the filter device (9) extends across the opening for filtering a fluid medium flowing through the outlet opening and the filter device (9), and a pre-filter device (8) secured, between the fastening arrangement (12) and the filter device (9), for pre-filtering fluid medium flowing successively through the upstream pre-filter (8) and downstream filter device (9). The pre-filter device (8) comprises a filter mounting plate (15) located upstream of the filter device (9) and held there by the fastening arrangement (12), relative to the fluid flow direction, and at least one filter element (16) removably mounted on the mounting plate (15).

IPC Classes  ?

  • B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • F02C 7/055 - Air intakes for gas-turbine plants or jet-propulsion plants having provisions for obviating the penetration of damaging objects or particles with intake grids, screens or guards
  • B01D 46/02 - Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
  • F02C 7/05 - Air intakes for gas-turbine plants or jet-propulsion plants having provisions for obviating the penetration of damaging objects or particles

19.

FILTER ASSEMBLY

      
Application Number EP2012060435
Publication Number 2012/164087
Status In Force
Filing Date 2012-06-01
Publication Date 2012-12-06
Owner AAF LTD. (United Kingdom)
Inventor
  • Jackson, Paul
  • Donaldson, Jamie

Abstract

A filter assembly is provided which is particularly suitable for use in filtering intake air for gas turbines. The filter assembly (6) includes a final filter (9) and a pre-filter (8) which are directly engageable one with the other to provide a complete filter assembly. By so providing, pre-filter units may easily be removed and replaced in a compact configuration. A kit of parts is also provided.

IPC Classes  ?

  • B01D 46/02 - Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
  • B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D 46/12 - Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements

20.

FILTER ASSEMBLY AND METHOD OF MANUFACTURE THEREOF

      
Application Number EP2012060432
Publication Number 2012/164084
Status In Force
Filing Date 2012-06-01
Publication Date 2012-12-06
Owner AAF LTD. (United Kingdom)
Inventor
  • Donaldson, Jamie
  • Fekkes, Wim

Abstract

A filter assembly is provided which is particularly suitable for use in filtering intake air for gas turbines. The filter assembly (6) includes at least one filter cell, having a filter medium (24) arranged to filter gas passing through the cell. The filter medium (24) is affixed to the casing (10) making up the cell by a bonding agent (29, 31) which provides an inclined surface (30,32) for condensate to drain from the filter medium. A method for manufacturing the filter assembly is also provided.

IPC Classes  ?

  • B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D 46/12 - Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements

21.

FILTER ASSEMBLY, AND PRE-FILTER DEVICE AND PRE-FILTER MOUNTING PLATE THEREFOR

      
Application Number EP2011066002
Publication Number 2012/038317
Status In Force
Filing Date 2011-09-15
Publication Date 2012-03-29
Owner AAF LTD. (United Kingdom)
Inventor Jackson, Paul

Abstract

A filter assembly (6) comprises a mounting support (11) defining a fluid outlet opening in the support, a filter device (9) extending across the opening, a fastening arrangement (12) operative to locate the filter device against a seat (11a) of the mounting support (11) so that the filter device (9) extends across the opening for filtering a fluid medium flowing through the outlet opening and the filter device (9), and a pre-filter device (8) secured, between the fastening arrangement (12) and the filter device (9), by the fastening arrangement (12), for pre-filtering fluid medium flowing successively through the upstream pre- filter (8) and downstream filter device (9). The pre-filter device (8) comprises a filter mounting plate (15) located upstream of the filter device (9) and held there by the fastening arrangement (12), relative to the fluid flow direction, and at least one filter element (16) removably mounted on the mounting plate (15), to enable the filter element (16) to be removed and replaced by a replacement filter element, without the need to discard the pre-filter device as a whole, including the mounting plate. Also disclosed herein are the filter mounting plate (15) itself, with and without the removable filter element (s) (16).

IPC Classes  ?

  • B01D 46/02 - Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
  • B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours