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:
Jan. 15, 1980
Filed:
Dec. 29, 1977
Hiroshi Miyamoto, Amagasaki, JP;
Tadao Yamaji, Amagasaki, JP;
Toshi Nakajima, Amagasaki, JP;
Takao Sagara, Amagasaki, JP;
Kubota, Ltd., Osaka, JP;
Abstract
The open end inner periphery of a socket is provided with an annular groove, and at a suitable sufficient distance from the annular groove axially toward the innermost side of the socket a seal member stopping projection extends from the inner surface of the socket toward the outer peripheral surface of a spigot. A split lock ring is fitted in the annular groove. The outer peripheral surface of the spigot is provided with a projection which is disposed between the split lock ring and the stop projection and which is axially movable therebetween along with the spigot and adapted to engage with them at the ends of its travel. A seal member is disposed between a seal member supporting surface disposed inwardly of the stop projection and the outer peripheral surface of the spigot. This seal member is urged toward the stop projection by an urging device. A member for preventing the radial expansion of the lock ring is interposed between the bottom of the annular groove and the outer peripheral surface of the lock ring. This member comprises a flexible tube and a filler injected into the tube. The filler is initially fluid and afterwards solidifies.