Axial loading cam arrangement in or for a traction roller transmission
First Claim
1. An axial loading cam arrangement comprising two axial thrust members supported opposite one another so as to be rotatable relative to one another, at least one of said thrust members having a plurality of concentric annular races formed thereon with an annular cam structure disposed on each of said races opposite the other thrust member and arranged in radial symmetry with the cam structures of adjacent concentric races being angularly displaced and a plurality of antifriction rolling members disposed between said thrust members on said races so as to cause relative axial movement of said two thrust members upon relative rotational movement of said thrust members.
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Accused Products
Abstract
In an axial loading cam arrangement wherein two axial thrust members are supported opposite one another so as to be rotatable relative to one another at least one of the thrust members has a plurality of concentric annular races with annular cam structures formed thereon opposite the other thrust member and in radial symmetry and a plurality of rollers are disposed between the thrust members on said races for generating axial forces on said thrust members upon relative rotational movement thereof. The arrangement is particularly intended for use in a toroidal traction roller transmission wherein the traction rollers are forced into firm engagement with the traction discs between which they are disposed when a torque is transmitted through the transmission.
92 Citations
6 Claims
- 1. An axial loading cam arrangement comprising two axial thrust members supported opposite one another so as to be rotatable relative to one another, at least one of said thrust members having a plurality of concentric annular races formed thereon with an annular cam structure disposed on each of said races opposite the other thrust member and arranged in radial symmetry with the cam structures of adjacent concentric races being angularly displaced and a plurality of antifriction rolling members disposed between said thrust members on said races so as to cause relative axial movement of said two thrust members upon relative rotational movement of said thrust members.
- 4. A traction roller transmission comprising coaxial input and output shafts carrying toric elements disposed opposite one another, at least two motion transmitting traction rollers disposed between said toric elements in radial symmetry with respect to the axis of the input and output shafts and an axial loading cam arrangement disposed adjacent at least one of said toric elements for forcing said toric elements into firm engagement with said motion transmitting traction rollers when a torque is transmitted through said transmission, said loading cam arrangement comprising two axial thrust members supported opposite one another so as to be rotatable relative to one another, at least one of said thrust members having a plurality of concentric annular races formed thereon with an annular cam structure disposed on each of said races opposite the other thrust member and arranged in radial symmetry and the cam structures of adjacent concentric races being angularly displaced, all being arranged in radial symmetry, a plurality of antifriction rolling members disposed between said thrust members on said races so as to cause relative axial movement of said two thrust members upon relative rotational movement of said thrust members.
Specification
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- Resources
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Current AssigneeExcelermatic Inc.
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Original AssigneeExcelermatic Inc.
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InventorsKraus, Charles E.
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Primary Examiner(s)Wright, Dirk
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Application NumberUS07/817,057Time in Patent Office225 DaysField of Search74/200, 74/568 R, 74/569, 74/571 R, 475/195, 475/192US Class Current476/41CPC Class CodesF16H 15/38 with two members B having h...
