Fitting with dual serrated locking rings
AssigneeHamilton Sundstrand Corporation
InventorsLeo J. Veilleux, Jr., Lubomir A. Ribarov
Life of this patent
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Abstract
A fitting has a threaded insert to be tightened within a housing bore. A first lock ring has an anti-rotation structure on an outer peripheral surface to interfit with anti-rotation structure in a housing. The first lock ring has a face extending generally perpendicular to an axis of the insert, with anti-rotation structure included on the first face. A second lock ring has anti-rotation structure on a face which extends perpendicular to an axis of the threaded insert. The anti-rotation structure on the faces of the first and second lock ring interfit to resist relative rotation of the two. An assembly is also disclosed.
Claims16
A fitting comprising:
- a threaded insert having threads to be tightened within a housing bore;
- and
- a first lock ring having non-rotation structure on an outer peripheral surface to interfit with mating non-rotation structure on an inner pheripheral surface of the housing bore, and said first lock ring having a first face, with anti-rotation structure included on said first face and a second lock ring having anti-rotation structure on a second face, with said anti-rotation structure on said first and second faces interfitting to resist relative rotation of the two.
A fitting comprising:
- a threaded insert having threads to be tightened within a housing bore;
- a first lock ring having non-rotation structure on an outer peripheral surface to interfit with mating non-rotation structure in the housing, and said first lock ring having a first face, with anti-rotation structure included on said first face and a second lock ring having anti-rotation structure on a second face, with said anti-rotation structure on said first and second faces interfitting to resist relative rotation of the two;
- and
- wherein a ledge is provided on said threaded insert and a spring is positioned intermediate said ledge and said second lock ring, such that when said fitting is torqued within a housing, said ledge applies a force holding said spring, and said spring provides a bias force urging said second face anti-rotation structure into said first face anti-rotation structure.
A fitting assembly comprising:
- a housing having a first bore of a generally enlarged cross-section and said first bore being provided with anti-rotation structure, and said housing having a second bore with a smaller cross-section, and said second bore being spaced from an outer face of said housing structure by a greater distance than said first bore, with said second bore being provided with threads;
- a threaded insert having threads tightened within said second bore;
- and
- a first lock ring having non-rotation structure on an outer peripheral surface interfitting with anti-rotation structure in a housing of said first lock ring, and said first lock ring having a first face, with anti-rotation structure included on said first face and a second lock ring having anti-rotation structure on a second face, with said anti-rotation structure on said first and second faces interfitting to resist relative rotation of the two, there being anti-rotation structure on an inner bore of said second lock ring which interfits with anti-rotation structure on an outer diameter of said threaded insert to resist relative rotation of the two.
Dependencies are inferred from the claim text.