US Patent Issued to Nabtesco on May 19 for "Seal device and construction machine" (Japanese Inventor)

ALEXANDRIA, Va., May 19 -- United States Patent no. 12,631,257, issued on May 19, was assigned to Nabtesco Corp. (Tokyo).

"Seal device and construction machine" was invented by Masahiro Takahashi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a sealing device and a construction machine. The seal device includes a first member, a second member, a seal ring, and an elastic ring. The first member has an inner circumferential surface. The second member rotates relative to the first member. The second member faces the first member in a rotation axis direction. The seal ring has an outer circumferential surface facing the inner circumferential surface in a radial direction ...