US Patent Issued to Sandon Global Engraving Technology on Nov. 3 for "End ring for a sleeve, a sleeve adapted to receive such an end ring, and a sleeve assembly incorporating such an end ring" (British Inventor)

ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,779,839, issued on Nov. 3, was assigned to Sandon Global Engraving Technology Ltd. (Runcorn, Great Britain).

"End ring for a sleeve, a sleeve adapted to receive such an end ring, and a sleeve assembly incorporating such an end ring" was invented by Gary Carmichael (Runcorn, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A sleeve assembly in which a pair of annular end rings are screwed into respective ends of an annular sleeve which includes around its inner surface a compressible liner. Respective surfaces of both end ring and sleeve are provided with specific complementary groove, chamfer, undercut or channel formations, and prior to scre...