Back to results
US 4,127,038 AGranted
Sprocket shift assembly
AssigneesDavid L. Browning, Marc S. Browning, Christopher M. Browning, John B. Browning, Gloria S. Browning, Michael C. Browning, Paul C. Browning
InventorBruce W. Browning
Life of this patent
Estimating the term…
Abstract
A sprocket shift assembly wherein sprockets of different diameters are arranged as a cluster on a common shaft and are coupled with a chain between driving and driven members. The chain is movable as the sprockets rotate from one of the sprockets to another by realignment of portions of the sprocket such that the chain is at all times in a positive driving relationship with the cluster.
Claims30
A sprocket shift assembly comprising
- a driving hinge;
- a pair of sprocket sectors, each having at least one partial sprocket thereon lying in a first plane;
- another sprocket, lying in a second plane parallel to the first plane, and having a pitch diameter that is different from the pitch diameter of the full sprocket formed by the partial sprockets;
- means mounting at least one of said sprocket sectors to be movable with respect to said driving hinge such that the partial sprockets of the sprocket sectors can lie in one plane at the same time to form a full sprocket when the sprocket sectors are in predetermined meshed position relative to the driving hinge, and such that each movable mounted sprocket sector can be moved to place some partial sprocket teeth thereof in a second plane;
- and
- means coupling the sprocket sectors to the driving hinge for rotation therewith.
3 more elements
A sprocket shift assembly comprising
- a driving hinge;
- a pair of sprocket sectors, each having at least two partial sprockets thereon, one of said partial sprockets having a larger radius than the other and said partial sprockets lying in parallel first and second planes;
- and
- means coupling at least one of said sprocket sectors to said driving hinge such that the smaller partial sprockets of the sprocket sectors can lie in one plane at the same time the larger partial sprockets of the sprocket sectors are in another plane to respectively form smaller and larger full sprockets and such that the same one sprocket sector can be moved to place some teeth of one partial sprocket of one radius in the plane of a partial sprocket of different radius of the other sprocket sector.
1 more element
A sprocket shift assembly comprising
- a driving hinge;
- a pair of sprocket sectors, each having at least one partial sprocket thereon;
- and
- means mounting at least one of said sprocket sectors to be movable with respect to said driving hinge such that the partial sprockets of the sprocket sectors can lie in one plane at the same time to form a full sprocket, and such that at least one sprocket sector movably mounted with respect to said driving hinge can be moved to place some partial sprocket teeth thereof in a second plane.
1 more element
Dependencies are inferred from the claim text.