Link plates for bicycle chain

Patent metadata

Field	Value
Publication number	US-9939045-B2
Application number	US-201615212153-A
Country	US
Kind code	B2
Filing date	Jul 15, 2016
Priority date	Jul 15, 2016
Publication date	Apr 10, 2018
Grant date	Apr 10, 2018

Abstract

A link plate for a bicycle chain is basically provided with a first link end portion, a second link end portion and a link intermediate portion interconnecting the first link end portion and the second link end portion. The first link end portion includes a first link opening having a first link center axis. The second link end portion includes a second link opening having a second link center axis parallel to the first link center axis. The link plate has a link longitudinal centerline defining a longitudinal direction. The first link end portion has a first extended edge portion extending away from the second link end portion in the longitudinal direction or the link intermediate portion has an axial protrusion protruding from an inner surface thereof in the axial direction.

First claim

What is claimed is:

1. An inner link plate for a bicycle chain, the inner link plate having an inner-link longitudinal centerline defining a longitudinal direction and comprising:
a first inner-link end portion including a first inner-link opening having a first inner-link center axis;
a second inner-link end portion including a second inner-link opening having a second inner-link center axis parallel to the first inner-link center axis; and
an inner-link intermediate portion interconnecting the first inner-link end portion and the second inner-link end portion,
the inner-link longitudinal centerline bisecting the inner link plate into a first half and a second half,
the first inner-link end portion having a first extended edge portion extending away from the second inner-link end portion in the longitudinal direction, a majority of the first extended edge portion being disposed on one of the first half and the second half, an upper surface of the first extended edge portion being an uppermost portion of the inner link plate.

2. The inner link plate according to claim 1 , wherein
the first extended edge portion is offset from the inner-link longitudinal centerline.

3. The inner link plate according to claim 1 , wherein
the first extended edge portion defines a projection that is at least partially spaced away from the inner-link longitudinal centerline.

4. The inner link plate according to claim 3 , wherein
the projection is integrally formed with the first inner-link end portion, the second inner-link end portion and the inner-link intermediate portion as a single unitary member.

5. The inner link plate according to claim 3 , wherein
the projection is a separate member from the first inner-link end portion.

6. The inner link plate according to claim 5 , wherein
the projection includes a metallic material.

7. The inner link plate according to claim 5 , wherein
the projection includes a non-metallic material.

8. The inner link plate according to claim 1 , wherein
a majority of the first extended edge portion is disposed mostly on one side of a tangent line that is tangent to the first inner-link opening and the second inner-link opening and that is opposite to the other side of the tangent line that is defined between the inner-link longitudinal centerline and the tangent line.

9. The inner link plate according to claim 1 , wherein
the second inner-link end portion has a second extended edge portion extending away from the first inner-link end portion in the longitudinal direction, a majority of the second extended edge portion being disposed on the one of the first half and the second half.

10. The inner link plate according to claim 9 , wherein
the first extended edge portion defines a first projection that is spaced away from the inner-link longitudinal centerline, and
the second extended edge portion defines a second projection that is spaced away from the inner-link longitudinal centerline.

11. The inner link plate according to claim 10 , wherein
the first and second projections are integrally formed with the first inner-link end portion, the second inner-link end portion and the inner-link intermediate portion as a single unitary member.

12. A bicycle chain link comprising:
a primary inner link plate having a primary inner-link longitudinal centerline defining a primary longitudinal direction, the primary inner link plate comprising:
a first inner-link end portion including a first inner-link opening having a first inner-link center axis;
a second inner-link end portion including a second inner-link opening having a second inner-link center axis parallel to the first inner-link center axis; and
a primary inner-link intermediate portion interconnecting the first inner-link end portion and the second inner-link end portion,
the primary inner-link longitudinal centerline bisecting the primary inner link plate into a first half and a second half,
the first inner-link end portion having a first extended edge portion extending away from the second inner-link end portion in the primary longitudinal direction, a majority of the first extended edge portion being disposed on one of the first half and the second half, an upper surface of the first extended edge portion being an uppermost portion of the inner link plate; and

a secondary inner link plate having a secondary inner-link longitudinal centerline defining a secondary longitudinal direction, the secondary inner link plate comprising:
a third inner-link end portion including a third inner-link opening having a third inner-link center axis;
a fourth inner-link end portion including a fourth inner-link opening having a fourth inner-link center axis parallel to the third inner-link center axis; and
a secondary inner-link intermediate portion interconnecting the third inner-link end portion and the fourth inner-link end portion.

13. The bicycle chain link according to claim 12 , wherein
the secondary inner-link longitudinal centerline bisects the secondary inner link plate into a first half and a second half,
the third inner-link end portion has a third extended edge portion extending away from the fourth inner-link end portion in the secondary longitudinal direction, and a majority of the third extended edge portion is disposed on one of the first half and the second half of the secondary inner link plate.

14. The bicycle chain link according to claim 12 , wherein
the third inner-link end portion is free of an extended edge portion extending away from the fourth inner-link end portion in the secondary longitudinal direction.

Assignees

• Shimano Kk

Inventors

• Fukumori Tsuyoshi

Classifications

• F16G15/12

  Chain links · CPC title

• F16G13/06 Primary

  with links connected by parallel driving-pins with or without rollers {so-called open links} · CPC title

• B62M9/00

  Transmissions characterised by use of an endless chain, belt, or the like (cycle chain guards B62J13/00) · CPC title