Chain-turning system
AssigneeFerag AG
InventorJurg Eberle
Life of this patent
Estimating the term…
Abstract
To reduce the polygonal effect, the chain-turning system described in the present disclosure has at least one transition curve (UK11, UK12) that joins up with the circular turning arc (B.11) and the radius of curvature of the transition curve varies continually. This transition curve may join up with a straight portion of the chain's track (G.11, G.12) or with another turning arc. The transition curve may, for example, be a portion of a clothoid, whose radius of curvature at its junction (A.11, A.12) with the turning arc (B.11) is the same as the turning radius and at its junction (C.11, C.12) with the straight portion of the chain's track (G.11, G.12) is infinitely large.
Claims11
Chain-turning system for a chain made of a continuous series of links articulated to each other, comprising a turning device that defines the track along which the chain moves around a circular turning arc with the turning radius (R), and chain-guidance devices so made as to provide at least one transition curve which joins up with the turning arc at a first junction point;
- the turning arc and the transition curve having a common tangent at the first junction point;
- and the curvature of the transition curve varying along its length so as to ensure that the difference between its radius of curvature and the turning radius (R) decreases continually with its distance from the first junction point.
Dependencies are inferred from the claim text.