A bolt includes a main-bolt head, a threaded shaft, and a deformable-bolt head component. The main-bolt head has a recess. The threaded shaft extends from the main-bolt head. The threaded shaft has an external thread wrapped therearound. The deformable-bolt head component has an outer flange and an interior threaded bore. The outer flange of the deformable-bolt head component is coupled to the main-bolt head such that a relief space is formed between the deformable-bolt head component and the recess.
A self-locking nut includes a main-nut body and a deformable-nut body. The main-nut body has a recess leading into an interior threaded bore forming x turns of an internal thread therein. The deformable-nut body has an outer flange and an interior threaded bore forming y turns of an internal thread therein. The outer flange of the deformable-nut body is fixed to the main-nut body such that a relief space is formed between the deformable-nut body and the recess. A ratio of x:y is about 2:1.
B21K 1/70 - Making machine elements nuts of special shape, e.g. self-locking nuts, wing nuts
F16B 39/12 - Locking of screws, bolts, or nuts in which the locking takes place after screwing down by means of locknuts
F16B 39/34 - Locking by deformable inserts or like parts
F16B 39/38 - Locking of screws, bolts, or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt with a second part of the screw-thread which may be resiliently mounted
A self-locking nut is formed with a rear nut body with internal threading and a front nut body having circumferentially arranged, crush-locking lips provided on a forward contact face of the front nut body and being spaced from the internal threading of the rear nut body by an internal relief cut for accommodating deformation of the crush-locking lips therein. When the nut is tightened down on an object on a fastener bolt, the crush-locking lips are forced inwardly and deformed on the threaded shaft of the fastener bolt into the space of the internal relief cut in order to form a permanent lock on the fastener bolt. In another preferred embodiment, the self-locking nut has a front “flying saucer” shaped part configured to work like a “jam nut” portion, and a rear “nut body” part having a front indentation space configured to work like an inner relief cut. The two parts are joined together by circumferential welding and flattening of the “flying saucer” part into the inner relief cut space of the “nut body” part while leaving a small gap between the parts.
A one-piece, self-locking nut is formed with a threaded nut body integrally formed with crush-locking lips on a forward contact face of the nut body spaced by an internal relief cut for accommodating deformation of the crush-locking lips therein. When the nut is tightened down on an object on a fastener bolt, the crush-locking lips are forced inwardly and deformed on the threaded shaft of the fastener bolt into the space of the internal relief cut in order to form a permanent lock on the fastener bolt. The one-piece, self-locking nut can be fabricated by conventional nut manufacturing methods. In use it threads on quickly like a conventional nut and installs with conventional tools.
F16B 39/12 - Locking of screws, bolts, or nuts in which the locking takes place after screwing down by means of locknuts
F16B 39/28 - Locking of screws, bolts, or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
A one-piece, self-locking nut is formed with a threaded nut body integrally formed with crush-locking lips on a forward contact face of the nut body spaced by an internal relief cut for accommodating deformation of the crush-locking lips therein. When the nut is tightened down on an object on a fastener bolt, the crush-locking lips are forced inwardly and deformed on the threaded shaft of the fastener bolt into the space of the internal relief cut in order to form a permanent lock on the fastener bolt. The one-piece, self-locking nut can be fabricated by conventional nut manufacturing methods. In use it threads on quickly like a conventional nut and installs with conventional tools.
patents
