US Patent Issued to Killakathu Ramanathan Babu on April 21 for "Base ring assembly for a pneumatic vacuum elevator and a method thereof" (Indian Inventors)

ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,220, issued on April 21, was assigned to Killakathu Ramanathan Babu (India).

"Base ring assembly for a pneumatic vacuum elevator and a method thereof" was invented by Killakathu Ramanathan Babu (Chennai, India).

According to the abstract* released by the U.S. Patent & Trademark Office: "A base ring assembly is disclosed. The base ring assembly an arc shaped base ring includes at least four parts. The arc shaped base ring is composed by an aluminum die casting. The base ring assembly also includes an L-shaped clamp comprises at least four parts. The at least four parts of the L-shaped clamp are located on grooves of the corresponding at least four parts of the arc shaped base rin...