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US 5,700,121 AGranted
Self-locking nut
OwnerAntonio Minolainventor
Life of this patent
Estimating the term…
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OwnerAntonio Minolainventor
Estimating the term…
The self-locking nut comprises an hexagonal outer case (10) having front and rear open faces, and a set of cup-shaped or tapered spring members (14a, 14b) having threaded bores (17) axially aligned with the front and rear openings of the case (10). At least one of the tapered spring members (14a) has side edges (18) inwardly rounded and is provided with deflection legs (19) which extend outwardly to engage the internal corners between the side walls (11) of the case (10). A braking washer (20) may be optionally provided inside the case (10) to prevent the reverse rotation of the nut caused external stresses; the braking washer (20) is provided with a large central hole (21) having inwardly extending protrusion (22) ending in correspondence of the average diameter of the thread (17) of the spring members (14a, 14b) of the nut.
A self-locking nut comprising an outer case having open front and rear sides, and peripherally-arranged side walls, a set of tapered spring members, each having a threaded central bore, being stacked inside the case, and lugs inwardly bent from the side walls to retain the spring members in the outer case, wherein said set of spring members includes at least one first spring member comprising inwardly rounded peripheral edges and angularly spaced deflection legs, each of said legs radially protruding from each first spring member to engage a corresponding corner of the peripheral walls of the case.
Dependencies are inferred from the claim text.