The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 19, 2026
Filed:
Jul. 17, 2024
Nabtesco Corporation, Tokyo, JP;
Masahiro Takahashi, Tokyo, JP;
NABTESCO CORPORATION, Tokyo, JP;
Abstract
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 and spaced apart from the inner circumferential surface. The seal ring has a sealing surface in sliding contact with the second member. An elastically deformable elastic ring is disposed between the inner circumferential surface of the first member and the outer circumferential surface of the seal ring. The elastic ring presses the seal surface of the seal ring against the second member to seal between the seal surface and the second member.