Patents by Inventor Kemal Ajay
Kemal Ajay has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9993828Abstract: A particle separation system for separating particles in an airflow upstream of a detection chamber in an aspirating smoke detector is disclosed. The particle separation system includes an airflow path for directing the airflow from an inlet to an outlet. The airflow path includes a first airflow path section in a first direction and a second airflow path section in a second direction, the first and second directions being different relative to each other. The airflow path also includes at least one electrically charged surface such that the airflow undergoes electrostatic precipitation as it traverses the airflow path. A method of separating particles in an airflow upstream of a detection chamber in an aspirating smoke detector is also disclosed.Type: GrantFiled: March 3, 2011Date of Patent: June 12, 2018Assignee: Garrett Thermal Systems LimitedInventors: Kemal Ajay, Brian Alexander
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Patent number: 9805570Abstract: A system and method of reducing the incidence of false alarms attributable to dust in smoke detection apparatus. The method includes obtaining at least two sample air flows, subjecting a first airflow to particle reduction and measuring the level of particles in the first airflow and generating a first signal indicative of the intensity. The method also includes measuring the level of particles in the second airflow and generating a second signal indicative of the intensity. The first signal is compared to a predetermined alarm level and, if the alarm level is achieved, the first and second signals are subsequently compared and an output signal is generated based on the relative difference between the first and second signals.Type: GrantFiled: June 21, 2012Date of Patent: October 31, 2017Assignee: Garrett Thermal Systems LimitedInventors: Brian Alexander, Kemal Ajay
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Publication number: 20170276588Abstract: A particle detection system (100), such as an active video smoke detection system, includes at least one illumination means (102) for directing a beam (106) of radiation through at least part of the air volume being monitored (110), an image sensor (104) is positioned to capture images of at least part of a beam (106) from illumination means (102); and means to analyse (107) the captured images to detect the presence of particles within the volume. At least 29 different aspects are described for improving the sensitivity, usability, and robustness of particle detection. These include, for example, configuring illumination means (102) to create a curtain of light or a rapidly-scanned beam across the air volume (110), and configuring a reflector to steer or change direction of a beam reflected from illumination means (102).Type: ApplicationFiled: June 7, 2017Publication date: September 28, 2017Applicant: GARRETT THERMAL SYSTEMS LIMITEDInventors: Ronald KNOX, Kemal AJAY, Karl BOETTGER
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Patent number: 9746363Abstract: A method of detecting one or more blocked sampling holes in a pipe of an aspirated smoke detector system. The method includes ascertaining the base flow of fluid through a particle detector using a flow sensor; monitoring subsequent flow through the particle detector; comparing the subsequent flow with the base flow; and indicating a fault if the difference between the base flow and the subsequent flow exceeds a predetermined threshold.Type: GrantFiled: October 17, 2014Date of Patent: August 29, 2017Assignee: Garrett Thermal Systems LimitedInventors: Kemal Ajay, Arjun Vinoo Caprihan, Michael Rezny
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Patent number: 9702803Abstract: A particle detection system (100), such as an active video smoke detection system, includes at least one illumination means (102) for directing a beam (106) of radiation through at least part of the air volume being monitored (110), an image sensor (104) is positioned to capture images of at least part of a beam (106) from illumination means (102); and means to analyze (107) the captured images to detect the presence of particles within the volume. At least 29 different aspects are described for improving the sensitivity, usability, and robustness of particle detection. These include, for example, configuring illumination means (102) to create a curtain of light or a rapidly-scanned beam across the air volume (110), and configuring a reflector to steer or change direction of a beam reflected from illumination means (102).Type: GrantFiled: April 16, 2015Date of Patent: July 11, 2017Assignee: GARRETT THERMAL SYSTEMS LIMITEDInventors: Ron Knox, Kemal Ajay, Karl Boettger
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Patent number: 9702802Abstract: There is described a filter arrangement for a particle detector for detecting particles in an environment. The particle detector can include one or more sensors for analyzing fluid in a detection region to produce sensor output. The filter arrangement includes structure defining flow paths, for conveying fluid from the environment towards the detection region, including a first flow path, which includes a filter, and a second flow path bypassing the filter. There is also provided a mechanism for controlling relative flow rates of fluid through the first flow path and the second flow path and a controller configured to receive the sensor output corresponding to at least two relative flow rates and apply logic thereto to generate an output indicative of a condition of the filter.Type: GrantFiled: March 4, 2011Date of Patent: July 11, 2017Assignee: Garrett Thermal Systems LimitedInventors: Kemal Ajay, Nitin Vayeda
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Publication number: 20170184496Abstract: A particle detection system including; at least one light source adapted to illuminate a volume being monitored at at least two wavelengths; a receiver having a field of view and being adapted to receive light from at least one light source after said light has traversed the volume being monitored and being adapted to generate signals indicative of the intensity of light received at regions within the field of view of the receiver; a processor associated with the receiver adapted to process the signals generated by the receiver to correlate light received at at least two wavelengths in corresponding regions within the field of view of the receiver and generate an output indicative of the relative level of light received at the two wavelengths.Type: ApplicationFiled: March 10, 2017Publication date: June 29, 2017Inventors: Ronald Knox, Kate Cooper, Kemal Ajay
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Publication number: 20170146454Abstract: The invention provides use of one or more emitted beams of radiation (16), for example, laser beam(s), in combination with an image capturing means (14), for example, one or more video cameras and/or optical elements to detect particles (30), for example, smoke particles, located in an open space (12).Type: ApplicationFiled: February 1, 2017Publication date: May 25, 2017Applicant: GARRETT THERMAL SYSTEMS LIMITEDInventors: Ron KNOX, Karl BOETTGER, Kemal AJAY
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Patent number: 9645081Abstract: A particle detection system including; at least one light source adapted to illuminate a volume being monitored at at least two wavelengths; a receiver having a field of view and being adapted to receive light from at least one light source after said light has traversed the volume being monitored and being adapted to generate signals indicative of the intensity of light received at regions within the field of view of the receiver; a processor associated with the receiver adapted to process the signals generated by the receiver to correlate light received at at least two wavelengths in corresponding regions within the field of view of the receiver and generate an output indicative of the relative level of light received at the two wavelengths.Type: GrantFiled: November 30, 2015Date of Patent: May 9, 2017Assignee: Xtralis Technologies LtdInventors: Ron Knox, Kate Cooper, Kemal Ajay
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Patent number: 9594066Abstract: The invention provides use of one or more emitted beams of radiation (16), for example, laser beam(s), in combination with an image capturing means (14), for example, one or more video cameras and/or optical elements to detect particles (30), for example, smoke particles, located in an open space (12).Type: GrantFiled: February 12, 2015Date of Patent: March 14, 2017Assignee: Garrett Thermal Systems LimitedInventors: Ron Knox, Karl Boettger, Kemal Ajay
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Publication number: 20160377541Abstract: A beam detector including a light source, a receiver, and a target, acting in cooperation to detect particles in a monitored area. The target reflects incident light, resulting in reflected light being returned to receiver. The receiver is capable of recording and reporting light intensity at a plurality of points across its field of view. In the preferred form the detector emits a first light beam in a first wavelength band; a second light beam in a second wavelength band; and a third light beam in a third wavelength band, wherein the first and second wavelengths bands are substantially equal and are different to the third wavelength band.Type: ApplicationFiled: August 25, 2016Publication date: December 29, 2016Inventors: Ronald Knox, Kate Cooper, Kemal Ajay
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Patent number: 9470627Abstract: A method of detecting particles in an air flow is described. The method includes receiving a signal indicative of light intensity scattered from the air flow at a plurality of wavelengths and processing the signal indicative of the intensity of received light at each of the wavelengths and a corresponding wavelength dependent parameter to generate an output signal indicative of at least one characteristic of particles in the air flow. A particle detection system is also described.Type: GrantFiled: August 24, 2015Date of Patent: October 18, 2016Assignee: Xtralis Technologies LtdInventors: Brian Alexander, Nitin Vayeda, Kemal Ajay
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Patent number: 9448168Abstract: A beam detector including a light source, a receiver, and a target, acting in cooperation to detect particles in a monitored area. The target reflects incident light, resulting in reflected light being returned to receiver. The receiver is capable of recording and reporting light intensity at a plurality of points across its field of view. In the preferred form the detector emits a first light beam in a first wavelength band; a second light beam in a second wavelength band; and a third light beam in a third wavelength band, wherein the first and second wavelengths bands are substantially equal and are different to the third wavelength band.Type: GrantFiled: June 12, 2015Date of Patent: September 20, 2016Assignee: Xtralis Technologies LtdInventors: Ronald Knox, Kate Cooper, Kemal Ajay
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Publication number: 20160223437Abstract: A method of particle detection in an aspirated particle detection system having a sampling pipe network and a particle detector. The method includes drawing sample air to the particle detector through the air sampling network; analyzing the sample air with the particle detector; entering an amplification phase, in the event that a concentration of particles in the sample air greater than a predetermined threshold is detected, to create a plurality of sample air packets in the sampling pipe, wherein each sample air packet corresponds to a sampling inlet and includes an amplified concentration of air drawn from the corresponding sampling inlet; transporting the sample air including the plurality of sample air packets through the sampling pipe to the particle detector; and determining through which sampling inlet any particles entered the particle detection system.Type: ApplicationFiled: October 16, 2014Publication date: August 4, 2016Inventors: Kemal Ajay, Ronald Knox, Brian Alexander, Kate Cooper, Rajiv Kumar Singh, Thor North, Stephen James Pattinson, Peter Massingbard- Mundy, Alasdair James Williamson
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Patent number: 9395345Abstract: A sensing system and method for detecting particles in an air volume includes a main airflow path including an inlet from the air volume. Also included is a collection site within the main airflow path. The collection site is for drawing an air sample from the main airflow path. Additionally the system includes a means to induce a localized increase in particle speed at the collection site relative to air speed along the remainder of the main airflow path. The means to induce a localized increase includes an auxiliary airflow path from the main airflow path. The auxiliary airflow path has an exit upstream of the collection site. In an alternative form of the invention, the means to induce the localized increase in particle speed at the collection site comprises a venturi in the main airflow path with the collection site being disposed along the venturi.Type: GrantFiled: March 3, 2011Date of Patent: July 19, 2016Assignee: Xtralis Technologies LtdInventors: Rajiv Kumar Singh, Kemal Ajay
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Publication number: 20160077001Abstract: A particle detection system including; at least one light source adapted to illuminate a volume being monitored at at least two wavelengths; a receiver having a field of view and being adapted to receive light from at least one light source after said light has traversed the volume being monitored and being adapted to generate signals indicative of the intensity of light received at regions within the field of view of the receiver; a processor associated with the receiver adapted to process the signals generated by the receiver to correlate light received at at least two wavelengths in corresponding regions within the field of view of the receiver and generate an output indicative of the relative level of light received at the two wavelengths.Type: ApplicationFiled: November 30, 2015Publication date: March 17, 2016Inventors: Ron Knox, Karl Boettger, Kemal Ajay
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Patent number: 9267884Abstract: A particle detection system including; at least one light source adapted to illuminate a volume being monitored at at least two wavelengths; a receiver having a field of view and being adapted to receive light from at least one light source after said light has traversed the volume being monitored and being adapted to generate signals indicative of the intensity of light received at regions within the field of view of the receiver; a processor associated with the receiver adapted to process the signals generated by the receiver to correlate light received at at least two wavelengths in corresponding regions within the field of view of the receiver and generate an output indicative of the relative level of light received at the two wavelengths.Type: GrantFiled: June 27, 2014Date of Patent: February 23, 2016Assignee: Xtralis Technologies LtdInventors: Ron Knox, Karl Boettger, Kemal Ajay
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Publication number: 20160033400Abstract: A method of detecting particles in an air flow is described. The method includes receiving a signal indicative of light intensity scattered from the air flow at a plurality of wavelengths and processing the signal indicative of the intensity of received light at each of the wavelengths and a corresponding wavelength dependent parameter to generate an output signal indicative of at least one characteristic of particles in the air flow. A particle detection system is also described.Type: ApplicationFiled: August 24, 2015Publication date: February 4, 2016Inventors: Brian Alexander, Nitin Vayeda, Kemal Ajay
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Publication number: 20150276593Abstract: A beam detector including a light source, a receiver, and a target, acting in cooperation to detect particles in a monitored area. The target reflects incident light, resulting in reflected light being returned to receiver. The receiver is capable of recording and reporting light intensity at a plurality of points across its field of view. In the preferred form the detector emits a first light beam in a first wavelength band; a second light beam in a second wavelength band; and a third light beam in a third wavelength band, wherein the first and second wavelengths bands are substantially equal and are different to the third wavelength band.Type: ApplicationFiled: June 12, 2015Publication date: October 1, 2015Inventors: Ron Knox, Karl Boettger, Kemal Ajay
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Publication number: 20150253165Abstract: A method of determining at least one point of entry of smoke into a smoke detection system, the system having a sampling pipe network including at least one sampling pipe and a plurality of sampling inlets through which an air sample can enter the at least one sampling pipe of the smoke detection system for analysis by a particle detector, said method including: determining a volume of sample air that has passed through at least part of the smoke detection system since a predetermined event or a value corresponding to said volume; and determining through which sampling inlet of the plurality of sampling inlets the smoke entered the smoke detection system based, at least in part, on the determined volume or value. Systems for implementing such a method and related methods are also described.Type: ApplicationFiled: October 16, 2013Publication date: September 10, 2015Inventors: Kemal Ajay, Ron Knox, Brian Alexander, Karl Boettger, Rajiv Kumar Singh, Thor North, Stephen James Pattinson, Peter Massingberd-Mundy