Bearings – Rotary bearing – Antifriction bearing
Patent
1986-09-09
1988-06-14
Levy, Stuart S.
Bearings
Rotary bearing
Antifriction bearing
114106, 384613, F16C 1910, B63H 908
Patent
active
047508795
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a bearing which is so arranged as to be acted upon by an axial load applied at a point radially displaced outside the bearing for the purpose of transferring the active load at a point radially displaced inwards towards the centre of the bearing, and which comprises a number of bearing supports distributed around the circumference of the bearing.
In bearings which are so arranged as to be acted upon by a force applied at a point laterally displaced in relation to the centre of the bearing and which are so arranged as to operate with play in the bearing, an unfavourable distribution of the load on one edge of the bearing or on one roller body will usually occur, depending on the type of bearing concerned. For example, in the case of a bearing consisting of two axial ball bearings which are acted upon by an axial force applied at a point outside the rows of balls, unfavourable loading of the balls will occur if the play in the bearing decreases. If there is a great deal of play, what will happen is that only a single ball, which normally accepts the greatest load, will be loaded in each bearing, for which it was previously possible to compensate by pre-loading the bearing.
The bearing disclosed in German Pat. No. 1 708 557 comprises a moving upper part and a fixed lower part with a ring attached to each of the components, between which balls contained in the bearing are arranged to run. By cutting a recess in the ring which is capable of being acted upon by a load, it is possible for the upper part to be deflected and accommodated with a part of the recess, from its boundary edge. The possibility is afforded in this way in the aforementioned previously disclosed bearing of displacing the load inwards towards the centre of the bearing. A high degree of manufacturing accuracy is called for, however, in this previously disclosed arrangement, in addition to which the bearing rings must exhibit elasticity in order to be able to function in the intended manner.
The principal object of the present invention is essentially to propose a bearing of the kind described above which will overcome the problems of achieving the best possible load distribution. This is achieved without the need for bearing play, by distributing the load acting upon the bearing in the most advantageous fashion, thereby producing a considerable increase in the strength of the bearing, but without as a consequence having to increase the dimensions of the bearing to a corresponding degree. The arrangement may, for example, be applied to a bearing intended for a so-called swivel which is used on board a boat on a foresail so arranged as to run along a foremast.
This object is achieved by means of an arrangement in accordance with the present invention, which is characterized essentially in that a bearing body capable of being acted upon by a force is accommodated between two bearing rings or other appropriate bearing components contained in the bearing and each having its own bearings. In such case, a number of axially extending supporting bodies are capable of being accommodated between said bearing body and each bearing ring. The bodies are so distributed that two supporting bodies or the free ends of a common supporting body are situated between the centre of the bearing and the outside of the bearing to either side of the centre of the bearing viewed in a direction from one bearing ring to the other bearing ring.
The bearing in accordance with the present invention differs significantly from the previously disclosed arrangement referred to above. In accordance with the invention the bearing arrangement comprises a bearing body capable of being acted upon by a force and situated between two bearing rings or other appropriate bearing components contained in the bearing and each having its own bearings. A number of axially extending supporting bodies are also capable of being accommodated between the bearing body and each bearing ring. These supporting bodies are so distributed that two supporting bodies or the f
REFERENCES:
patent: 933974 (1909-09-01), Gohlke
patent: 1176889 (1916-03-01), Gohlke
patent: 1734223 (1929-11-01), Melott
patent: 1914204 (1933-06-01), Herold et al.
patent: 3650583 (1972-03-01), Itin et al.
patent: 4248281 (1981-02-01), Hood
Hannon Thomas R.
Johnson Lars
Levy Stuart S.
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