Locking joint
Patent 5785357 Issued on July 28, 1998. Estimated Expiration Date: 
June 21, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 21, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorsAssigneeApplicationNo. 668279 filed on 06/21/1996US Classes:285/92, Thread lock285/86, Locking sleeve285/322, MOVABLE JAW (E.G., CONTRACTIBLE SOCKET)285/328, PARTICULAR INTERFACE285/330, Interlocked or overlapped285/333, Threaded (e.g., drill pipe type)285/906EQUIVALENTSExaminersPrimary: Arola, Dave W.Attorney, Agent or FirmForeign Patent References
International ClassF16L 015/08AbstractA threaded joint is provided with a locking mechanism for resisting loosening and over torquing. The joint has splines that are alignable with axially directed fingers, and shear plates that are movable into the spaces between the splines and the fingers. The shear plates may be supported by a shear ring. A lock ring may be provided for maintaining the shear plates between the respective spaces. Another embodiment of the joint has a knurled portion that is alignable with axially directed fingers. The joint also includes a clamp ring engageable with the fingers.Field of SearchThread lockMOVABLE JAW (E.G., CONTRACTIBLE SOCKET) EQUIVALENTS Lock nut or washer Wedge bushing WITH MEANS BLOCKING RELEASE OF HOLDING MEANS SCREW Auxiliary latch Interlocked or overlapped Threaded (e.g., drill pipe type) Flat crest Locking sleeve PARTICULAR INTERFACE Member having opening or notch engaging a bolt head or nut on two sides And element maintaining member in operative engagement with bolt head or nut Member elastically or plastically deformable for attaching it to bolt head or nut Cam or thread lock | |
