US 12,404,933 B2
Sealing device
Wakana Fujita, Akaiwa (JP); and Keita Ohmori, Akaiwa (JP)
Assigned to UCHIYAMA MANUFACTURING CORP., Okayama (JP)
Filed by UCHIYAMA MANUFACTURING CORP., Okayama (JP)
Filed on Mar. 4, 2024, as Appl. No. 18/595,000.
Claims priority of application No. 2023-034552 (JP), filed on Mar. 7, 2023.
Prior Publication US 2024/0301917 A1, Sep. 12, 2024
Int. Cl. F16J 15/3256 (2016.01); F16C 33/78 (2006.01); F16C 33/80 (2006.01); F16J 15/447 (2006.01)
CPC F16J 15/3256 (2013.01) [F16C 33/7883 (2013.01); F16C 33/805 (2013.01); F16J 15/4472 (2013.01); F16C 33/7823 (2013.01); F16C 33/80 (2013.01); F16J 15/4474 (2013.01); F16J 15/4476 (2013.01); F16J 15/4478 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A sealing device to seal an annular space formed by two members, a fixed side member and a rotation side member which rotates coaxially relative to the fixed side member, the sealing device comprising:
a first seal member to be fitted to the rotation side member and a second seal member to be fitted to the fixed side member, the sealing device capable of being provided between the two members in a state in which the first seal member and the second seal member are combined; and
a coating layer having an easily scraped property, having shape retention when scraped, and being provided without any gaps at least at one place between facing regions in which the first seal member and the second seal member are provided so as to face each other in an initial state in which the first seal member and the second seal member are combined,
wherein a gap is formed when the coating layer is scraped by slidably contacting a region of the first seal member or the second seal member to which the coating layer faces in a state in which the first seal member and the second seal member rotate relative to each other from the initial state, and the gap has a sealing function.