US 12,441,425 B2
Bicycle chain cover
Ching Lin Hu, New Taipei (TW)
Assigned to Cheng Uei Precision Industry Co., Ltd., New Taipei (TW)
Filed by Cheng Uei Precision Industry Co., Ltd., New Taipei (TW)
Filed on Feb. 1, 2023, as Appl. No. 18/104,378.
Claims priority of provisional application 63/399,766, filed on Aug. 22, 2022.
Prior Publication US 2024/0059367 A1, Feb. 22, 2024
Int. Cl. B62J 13/04 (2006.01)
CPC B62J 13/04 (2013.01) 14 Claims
OG exemplary drawing
 
1. A bicycle chain cover, comprising:
a rear casing;
a first chain casing connected with the rear casing, the first chain casing being slidable in the rear casing, the first chain casing having a first arc portion, a first extending portion, two first ribs and a first ring, the first extending portion being disposed at an outer rim of the first arc portion and extending towards the rear casing, a tail end of the first extending portion being connected with the rear casing, the tail end of the first extending portion being slidable in the rear casing, the two first ribs being disposed at an inner rim of the first arc portion, the first ring being connected to two inner ends of the two first ribs; and
a second chain casing connected with the rear casing and the first chain casing, the second chain casing being slidable in the rear casing, the first chain casing and the second chain casing being slidable with respect to each other, the second chain casing having a second arc portion, a second extending portion, two second ribs and a second ring, two opposite ends of the second arc portion being slidably connected with two opposite ends of the first arc portion, respectively, the second extending portion being disposed at an outer rim of the second arc portion, the second extending portion and the first extending portion being disposed opposite to each other, a tail end of the second extending portion being connected with the rear casing, the tail end of the second extending portion being slidable in the rear casing, the two second ribs being disposed at an inner rim of the second arc portion, the second ring being connected to two inner ends of the two second ribs, the second ring being rotatably mounted in the first ring.