Atrion has been granted a patent for a valve design that includes a one-way valve, a filter, and two pressure relief ports. The valve is designed to relieve negative pressure when the pressure at the valve output is lower than the pressure at the valve input, and to relieve positive pressure when the pressure at the valve output is higher than the pressure at the valve input. The one-way valve has a monolithic portion that seals the valve channel, the pressure relief ports, and the filter. The valve body also includes a duckbill valve and a main valve channel. GlobalData’s report on Atrion gives a 360-degree view of the company including its patenting strategy. Buy the report here.
Atrion'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.
A valve with pressure relief ports and a monolithic duckbill valve
A recently granted patent (Publication Number: US11662034B2) describes a valve design that includes a duckbill valve and a main valve channel. The valve body consists of a valve inlet, a valve outlet, an upstream channel portion, and a downstream channel portion. The valve also features two pressure relief ports, one providing a fluid path from the upstream channel portion to the atmosphere outside the valve body, and the other providing a fluid path from the downstream channel portion to the atmosphere outside the valve body.
In the closed configuration, the duckbill valve includes a monolithic portion that simultaneously closes the channel, the first pressure relief port, and the second relief port. The valve further includes a filter that covers the first pressure relief port, ensuring that air passing through this port from the atmosphere outside the valve body is filtered. The duckbill valve is made of a resilient material and consists of two opposing flaps that are biased towards each other in a resting state, directly contacting each other.
The valve design also includes a filter medium and a cover, with the filter medium positioned between the first pressure relief port and the cover. The cover is included in the outermost surface of the valve. The channel of the valve has a long axis that intersects the valve inlet and the valve outlet, and an additional axis that is orthogonal to the channel long axis. The monolithic portion of the duckbill valve intersects the additional axis at least four times. The second pressure relief port is also intersected by the additional axis.
Overall, this patented valve design provides a reliable and efficient solution for controlling fluid flow. The inclusion of the duckbill valve, pressure relief ports, and filter ensures proper functioning and prevents any unwanted backflow or pressure build-up. The resilient material used for the duckbill valve enhances its durability and longevity. The filter covering the first pressure relief port helps maintain the cleanliness of the fluid passing through the valve. This valve design can find applications in various industries where fluid control is crucial, such as plumbing, medical devices, and automotive systems.