Patents by Inventor Merle L. Sand
Merle L. Sand 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: 11422153Abstract: Method and systems of determining when to replace an air data probe are provided. The method includes estimating air data probe temperatures based at least in part on available vehicle sensor data; tracking an amount of time an estimated temperature of the heating element is within at least one temperature range; and providing an air data probe replacement indication when a replacement threshold is met that is at least in part based on reaching a cumulative amount of time the heating element has an estimated temperature within the at least one temperature range.Type: GrantFiled: January 24, 2020Date of Patent: August 23, 2022Assignee: Honeywell International Inc.Inventors: Grant A. Gordon, Merle L Sand, Morris G. Anderson
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Patent number: 11105691Abstract: A total air temperature (TAT) probe having a self-regulating heating system is provided. A TAT probe housing includes at least one heating cavity that is located proximate to a tip of the TAT probe. A heating element is received within the at least one heating cavity. The heating element is composed from a flexible material with a very high positive temperature coefficient (PTC) that provides non-linear resistance with temperature with generally relatively low electrical resistances at temperatures below freezing and relatively high electrical resistances above freezing. A power source is coupled to the heating element. The very high PTC material of the heating element causes less power to be drawn by the heating element from the power source at higher temperatures above freezing than the power drawn by the heating element from the power source at lower temperatures below freezing to maintain a desired temperature of the TAT probe.Type: GrantFiled: March 30, 2018Date of Patent: August 31, 2021Assignee: Honeywell International Inc.Inventors: Grant Gordon, Nicholas A. Everson, Morris Anderson, Merle L Sand
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Publication number: 20210231702Abstract: Method and systems of determining when to replace an air data probe are provided. The method includes estimating air data probe temperatures based at least in part on available vehicle sensor data; tracking an amount of time an estimated temperature of the heating element is within at least one temperature range; and providing an air data probe replacement indication when a replacement threshold is met that is at least in part based on reaching a cumulative amount of time the heating element has an estimated temperature within the at least one temperature range.Type: ApplicationFiled: January 24, 2020Publication date: July 29, 2021Applicant: Honeywell International Inc.Inventors: Grant A. Gordon, Merle L Sand, Morris G. Anderson
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Patent number: 11016117Abstract: Method and systems of determining when to replace an air data probe are provided. The method includes measuring a temperature of a heating element of an air data probe; tracking an amount of time the heating element is within at least one temperature range; and providing an air data probe replacement indication when a replacement threshold is met that is at least in part based on reaching a cumulative amount of time the heating element has a measured temperature within the at least one temperature range.Type: GrantFiled: August 31, 2018Date of Patent: May 25, 2021Assignee: Honeywell International Inc.Inventors: Grant A. Gordon, Merle L Sand, Lloyd Bratlien, Jason Garde, John W Jacoby
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Patent number: 10948511Abstract: A method, comprises: receiving measured air pressure data from each air data probe on a vehicle; receiving a first set of data from at least one sensor system on the vehicle; determining predicted noise levels for each air data probe using a noise modelling system and the received first set of data; determining a transmission loss for each air data probe; determining if any air data probe is faulty by determining if an transmission loss of any of the air data probes is greater than a first threshold value, where an air data probe is deemed faulty if its transmission loss is greater than the first threshold value; and if the transmission loss of any of the air data probes is greater than the first threshold value, then generating a signal to indicated that at least one air data probe is faulty.Type: GrantFiled: March 5, 2018Date of Patent: March 16, 2021Assignee: Honeywell International Inc.Inventors: Grant Gordon, Raviprakash Thotadakumbri, Eugene G. Landree, Merle L. Sand
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Publication number: 20200072866Abstract: Method and systems of determining when to replace an air data probe are provided. The method includes measuring a temperature of a heating element of an air data probe; tracking an amount of time the heating element is within at least one temperature range; and providing an air data probe replacement indication when a replacement threshold is met that is at least in part based on reaching a cumulative amount of time the heating element has a measured temperature within the at least one temperature range.Type: ApplicationFiled: August 31, 2018Publication date: March 5, 2020Applicant: Honeywell International Inc.Inventors: Grant A. Gordon, Merle L Sand, Lloyd Bratlien, Jason Garde, John W Jacoby
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Publication number: 20190301949Abstract: A total air temperature (TAT) probe having a self-regulating heating system is provided. A TAT probe housing includes at least one heating cavity that is located proximate to a tip of the TAT probe. A heating element is received within the at least one heating cavity. The heating element is composed from a flexible material with a very high positive temperature coefficient (PTC) that provides non-linear resistance with temperature with generally relatively low electrical resistances at temperatures below freezing and relatively high electrical resistances above freezing. A power source is coupled to the heating element. The very high PTC material of the heating element causes less power to be drawn by the heating element from the power source at higher temperatures above freezing than the power drawn by the heating element from the power source at lower temperatures below freezing to maintain a desired temperature of the TAT probe.Type: ApplicationFiled: March 30, 2018Publication date: October 3, 2019Applicant: Honeywell International Inc.Inventors: Grant Gordon, Nicholas A. Everson, Morris Anderson, Merle L Sand
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Publication number: 20190271715Abstract: A method, comprises: receiving measured air pressure data from each air data probe on a vehicle; receiving a first set of data from at least one sensor system on the vehicle; determining predicted noise levels for each air data probe using a noise modelling system and the received first set of data; determining a transmission loss for each air data probe; determining if any air data probe is faulty by determining if an transmission loss of any of the air data probes is greater than a first threshold value, where an air data probe is deemed faulty if its transmission loss is greater than the first threshold value; and if the transmission loss of any of the air data probes is greater than the first threshold value, then generating a signal to indicated that at least one air data probe is faulty.Type: ApplicationFiled: March 5, 2018Publication date: September 5, 2019Applicant: Honeywell International Inc.Inventors: Grant Gordon, Raviprakash Thotadakumbri, Eugene G. Landree, Merle L. Sand