Patent ID: 11919592
Assignee: DIVE XTRAS INC.
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A device for retaining a bicycle chain on a sprocket, the device comprising:
a base plate defining a plurality of fastener openings centered on an origin, wherein a center of each of the plurality of fastener openings is disposed at a first radial distance from the origin, and wherein the origin defines an axis extending substantially orthogonally from a plane defined by two lines extending from the origin and at least two centers of the centers of the plurality of fastener openings;
a first guard secured to the base plate and comprising:
a first guard retaining surface comprising a first curved surface defined by a second radial distance from the axis that is greater than the first radial distance; and
a first guard guiding surface having a first end adjacent the first guard retaining surface and a second end distal from the first end, wherein the first end is disposed at the second radial distance from the axis, and wherein the second end is disposed at a third radial distance from the axis, wherein the third radial distance is greater than the second radial distance; and

a second guard secured to the base plate and comprising:
a second guard retaining surface comprising a second curved surface defined by the second radial distance from the axis; and
a second guard guiding surface having a first end adjacent the second guard retaining surface and a second end distal from the first end, wherein the first end is disposed at the second radial distance from the axis, and wherein the second end is disposed at a fourth radial distance from the axis, wherein the fourth radial distance is greater than the second radial distance.