Collins Aerospace has developed a personal breathing system with a phased-dilution demand oxygen regulator (PDDOR). The system includes a pressurized oxygen source, oronasal mask, dilution valve for ambient air, and demand valve for pure oxygen. The PDDOR ensures oxygen supply during inhalation and switches to ambient air when needed. GlobalData’s report on Collins Aerospace gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Collins Aerospace, was a key innovation area identified from patents. Collins Aerospace's grant share as of February 2024 was 78%. Grant share is based on the ratio of number of grants to total number of patents.

Personal breathing system with phased-dilution demand oxygen regulator

Source: United States Patent and Trademark Office (USPTO). Credit: Collins Aerospace

A recently granted patent (Publication Number: US11883694B2) discloses a breathing system designed to regulate oxygen delivery to a user efficiently. The system includes a pressurized oxygen source, a breathing mask covering the nose and mouth of the user, a dilution valve for ambient air supply, a demand valve, and a breathing regulator with a control volume (CV) pressure. The breathing regulator is equipped with a main valve that opens to provide pure oxygen during the initial demand phase of an inhalation cycle and closes when the CV pressure falls below a threshold, switching to ambient air supply via the dilution valve. The system also prepares for the next inhalation cycle by reopening the main valve when the CV pressure exceeds an upper threshold.

Furthermore, the patent details a method for regulating oxygen delivery to a user using the described breathing system. The method involves receiving a pressure signal from the breathing mask, providing pure oxygen supply via the demand valve, reducing the CV pressure within the breathing regulator, cutting off the oxygen supply when the CV pressure falls below a threshold, and restoring the CV pressure by switching to ambient air supply. The method also includes opening the main valve in preparation for the subsequent inhalation cycle when the CV pressure exceeds an upper threshold. Additionally, the method specifies the use of pilot valves within the breathing regulator to control the CV pressure effectively throughout the inhalation cycle, ensuring optimal oxygen delivery to the user.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.