# US 8,770,608 B1 · Bicycle front derailleur mount

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- Number: US 8,770,608 B1
- Document ID: US8770608B1
- Status: Granted
- Kind: B1
- Application number: 13/767,375
- Filed: 2013-02-14
- Granted: 2014-07-08
- Earliest claimed: 2013-02-14
- Assignees: Specialized Bicycle Components, Inc.
- Applicants: Specialized Bicycle Components, Inc.
- Inventors: Jason L. Chamberlain
- Web page: https://patentgrep.com/patent/US8770608B1

## CPC

- B62M 9/135: Mounting the derailleur on the frame
- B62K 25/286: {the shock absorber being connected to the chain-stay via a linkage mechanism}
- B62M: RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR {SINGLE-TRACK} CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES (arrangements or mounting of transmissions in vehicles in general B60K; transmission elements per se F16)
- B62K: CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDECARS, FORECARS, OR THE LIKE

## Abstract

A bicycle including a bicycle frame that has a main frame and a rear frame coupled to the main frame for pivotal movement about a pivot axis, and a derailleur mount that is coupled to the bicycle frame. The derailleur mount has a first mounting portion that is concentric with the pivot axis and defining a plane, a second mounting portion that is secured to the rear frame at a location spaced laterally from the plane, and a support portion. A derailleur is attached to the support portion.

## Claims

### Claim 1

A bicycle comprising:
a bicycle frame including a main frame and a rear frame coupled to the main frame for pivotal movement about a pivot axis;
a derailleur mount coupled to the bicycle frame, the derailleur mount having:
a first mounting portion concentric with the pivot axis and defining a plane;
a second mounting portion secured to the rear frame at a location spaced laterally from the plane; and
a support portion; and
a derailleur attached to the support portion.

### Claim 2 (depends on 1)

A bicycle as claimed in claim 1, further comprising a bearing pivotally supporting the rear frame relative to the main frame, wherein the derailleur mount is sandwiched between the rear frame and the bearing.

### Claim 3 (depends on 1)

A bicycle as claimed in claim 1, further comprising a rear wheel that defines a central plane of the bicycle, and wherein the first mounting portion is positioned on one side of the central plane and the second mounting portion is positioned on an opposite side of the central plane.

### Claim 4 (depends on 1)

A bicycle as claimed in claim 1, wherein the second mounting portion is substantially perpendicular to the first mounting portion.

### Claim 5 (depends on 1)

A bicycle as claimed in claim 1, wherein the main frame includes a seat tube, and wherein the support portion laterally overlaps with the seat tube.

### Claim 6 (depends on 5)

A bicycle as claimed in claim 5, wherein a portion of the derailleur mount is positioned directly behind the seat tube.

### Claim 7 (depends on 1)

A bicycle as claimed in claim 1, wherein the support portion has a convex surface, and wherein the derailleur has a concave surface receiving the convex surface.