Plug Power has filed a patent for a cryogenic dewar that includes an inner tank, an outer tank, and a plurality of trunnion mounts. The trunnion mounts are coupled between the inner and outer tanks, with front trunnion mounts in the front half and rear trunnion mounts in the rear half. The dewar also includes a support stiffener and a reinforcement element to strengthen the trunnion mounts. GlobalData’s report on Plug Power 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 Plug Power, reformer integrated fuel cells was a key innovation area identified from patents. Plug Power's grant share as of June 2023 was 1%. Grant share is based on the ratio of number of grants to total number of patents.

Cryogenic dewar with reinforced trunnion mounts

Source: United States Patent and Trademark Office (USPTO). Credit: Plug Power Inc

A cryogenic dewar patent application (Publication Number: US20230204160A1) describes a cryogenic dewar design with various features to enhance stability and support. The dewar includes an inner tank and an outer tank, with trunnion mounts connecting the two tanks. The front trunnion mounts are coupled between the front halves of the inner and outer tanks, while the rear trunnion mounts are coupled between the rear halves. A support stiffener is connected between two trunnion mounts on the inner surface of the inner tank, with a reinforcement element extending from one trunnion mount to another area of the inner surface.

The patent application also describes the specific placement of trunnion mounts on different sides of the dewar. The top, bottom, road side, and curb side trunnion mounts are mounted between corresponding parts of the inner and outer tanks.

The dewar design includes eight-inch outside diameter aluminum tubing for the trunnion mounts, with the tubing extending through a portion of the outer tank's wall. The length of the trailer on which the dewar is mounted is specified to be less than thirty-five feet, and the trailer may also have a hydraulic cryogenic off-loading system.

Additional features of the dewar design include patch plates coupled to the outer surface of the outer tank near each trunnion mount, reinforcing pads welded to the outer surface of the inner tank to strengthen the connection of the trunnion mounts, and a doubler support at the base of the trunnion mounts.

The patent application also includes a separate claim for a trunnion mount itself, which consists of tubing coupled between the inner and outer tanks, fiberglass supports, reinforcing pads, and a doubler support. An insulation pad is also mentioned, which is coupled between the aluminum tubing and the inner surface of the outer tank.

Overall, this cryogenic dewar patent application describes a design with various features to enhance stability and support, including specific placement of trunnion mounts, reinforcement elements, and support stiffeners. The use of specific materials and additional components like patch plates and insulation pads further contribute to the overall design.

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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