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US 12,000,426 B2Granted
Locknut
AssigneeSf Handels- Und Besitzgesellschaft Mbh
InventorHartmut Flaig
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AssigneeSf Handels- Und Besitzgesellschaft Mbh
InventorHartmut Flaig
Estimating the term…
The invention provides a locknut having a nut body having a threaded portion with an internal thread, an adjacent perimetral shoulder and a collar surrounding the shoulder, and having a metal annular washer, the annular washer resting on the shoulder within the collar and the collar being bent inwardly to form an annular groove between the bent collar and the shoulder in which the annular washer is received. An internal thread corresponding to the internal thread of the threaded portion of the nut body is formed at the inner perimeter of the annular washer, and the internal thread of the annular washer is offset axially by a distance with respect to the internal thread of the nut body. For better fixing of the annular washer in the annular groove, a row of projections or recesses is formed on the shoulder or on the annular washer where the annular washer and the shoulder overlap, which projections or recesses project in the axial direction and are arranged distributed around the perimeter of the shoulder or the annular washer. The projections form bearing surfaces, lines or points for the annular washer on the shoulder when the annular washer is placed inside the collar on the shoulder of the nut body. When the collar is deformed to form the annular groove, an axial force is applied to the annular washer, partially deforming the projections or recesses and/or partially pressing them into the opposite surface of the annular washer or the shoulder. As a result, the annular washer is held in the annular groove in a force-locking and form-fitting manner.
A locknut with a nut body having a threaded portion with an internal thread, a perimetral shoulder adjacent thereto and a collar surrounding the shoulder, and with an annular washer made of metal, wherein the collar is bent inwards and an annular groove is formed between the bent collar and the shoulder, wherein the annular washer is received in the annular groove, an internal thread corresponding to the internal thread of the threaded portion is formed at the inner perimeter of the annular washer, the internal thread of the annular washer is being axially offset by a distance relative to the internal thread of the nut body, and a series of projections or recesses is formed on the shoulder or on the annular washer where the annular washer and the shoulder mutually overlap, the projections or recesses projecting or recessing in the axial direction and being arranged distributed around the perimeter of the annular washer or of the shoulder.
A method of manufacturing a locknut with a nut body having a threaded portion with an internal thread, a perimetral shoulder adjacent thereto, and a collar surrounding the shoulder, and with an annular washer made of metal, wherein the collar is bent inwards and an annular groove is formed between the bent collar and the shoulder, wherein the annular washer is received in the annular groove, an internal thread corresponding to the internal thread of the threaded portion is formed at the inner perimeter of the annular washer the internal thread of the annular washer is being axially offset by a distance relative to the internal thread of the nut body and a series of projections or recesses is formed on the shoulder or on the annular washer where the annular washer and the shoulder mutually overlap, the projections or recesses projecting or recessing in the axial direction and being arranged distributed around the perimeter of the annular washer or of the shoulder, the method comprising;
Dependencies are inferred from the claim text.