ALEXANDRIA, Va., April 9 -- United States Patent no. 12,270,582, issued on April 8, was assigned to Parker-Hannifin Corp. (Cleveland).

"Bulbless thermostatic expansion valve and method of joining insulated power element" was invented by Eric R. Coyle (Chesterfield, Mo.) and Raghujit Prasad Kunapuli (Chesterfield, Mo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A bulbless thermostatic expansion valve has enhanced joining of the power element to the valve body. The valve body includes an upper extension that extends from a main body portion, an end of the upper extension being crimped into a lip relative to an opposing surface of the main body portion thereby defining a recess that receives a portion of the...