# US 2014/0360303 A1 · Bicycle handlebar assembly with integrated oleo-hydraulic controls

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- Number: US 2014/0360303 A1
- Document ID: US20140360303A1
- Status: Published application
- Kind: A1
- Application number: 14/297,045
- Filed: 2014-06-05
- Published: 2014-12-11
- Earliest claimed: 2013-06-10
- Assignees: Campagnolo S.r.l.
- Applicants: Campagnolo S.r.l.
- Inventors: Mario MEGGIOLAN
- Web page: https://patentgrep.com/patent/US20140360303A1

## CPC

- B62K 21/12: Handlebars; Handlebar stems
- B62K 23/02: hand actuated (arrangements of controls on handle-bars of engine-driven cycles B62K11/14)
- B62K 23/06: Levers
- B62L 3/023: {acting on fluid pressure systems}
- B62M 25/08: with electrical or fluid transmitting systems
- Y10T 74/20256: Steering and controls assemblies
- Y10T 74/2028: Handle bar type
- B62K: CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDECARS, FORECARS, OR THE LIKE
- B62L: BRAKES SPECIALLY ADAPTED FOR CYCLES {(arrangements in cycles for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions B60T8/00)}
- 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)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

The bicycle handlebar assembly comprises a handlebar rod and at least one oleo-hydraulic group for controlling on-board bicycle equipment; the oleo-hydraulic group is housed inside the handlebar rod. The internal housing in the handlebar rod overcomes any problems of bulk of the oleo-hydraulic group. Moreover, thanks to the relatively large size of the handlebar rod, the dimensional constraints imposed on the designer are much less stringent with respect to controls associated directly to the brake lever; it is thus relatively easy to make controls capable of exerting very large forces.

## Claims

### Claim 1

Bicycle handlebar assembly, comprising a handlebar profile and at least one oil-hydraulic group that is housed inside the handlebar profile and controls on-board bicycle equipment.

### Claim 2 (depends on 1)

Assembly according to claim 1, wherein the handlebar profile comprises an inner cavity, and wherein the oil-hydraulic group comprises a cylinder fixedly housed in the inner cavity of the handlebar profile.

### Claim 3 (depends on 2)

Assembly according to claim 2, wherein the handlebar profile is moulded hollow and the cylinder is co-moulded in it.

### Claim 4 (depends on 2)

Assembly according to claim 2 , wherein the cylinder comprises an oil-filling passage at an opening in the handlebar profile.

### Claim 5 (depends on 2)

Assembly according to claim 2,
wherein the on-board equipment is a hydraulic brake, actuated by pressurised fluid pushed by the oil-hydraulic group;
wherein the handlebar assembly comprises a brake control, with a brake lever and a brake cable, constrained at a first end thereof to the brake lever, a control lever, constrained to the brake cable at a second end thereof, and a pin between the control lever and the handlebar profile;
wherein the oil-hydraulic group comprises a piston able to slide in the cylinder;
and wherein the piston is constrained to the control lever, so as to be actuated to compress fluid in the cylinder following actuation of the brake lever.

### Claim 6 (depends on 5)

Assembly according to claim 5, wherein the piston is hinged to the control lever in an intermediate position between the pin and the attachment position of the brake cable.

### Claim 7 (depends on 5)

Assembly according to claim 5, wherein the oil-hydraulic cylinder is provided with two parallel ears, in which two holes are formed for the engagement of the pin.

### Claim 8 (depends on 7)

Assembly according to claim 7, wherein the handlebar profile comprises two holes at the holes in the ears of the cylinder, the pin being in engagement both in the holes in the ears and in the holes in the handlebar profile.

### Claim 9 (depends on 6)

Assembly according to claim 6, comprising a control adjustment device between the control lever and the piston.

### Claim 10 (depends on 9)

Assembly according to claim 9, wherein the control adjustment device comprises a threaded shank, mounted on the piston and in screwing engagement in a threaded seat formed in a cylinder rotatably mounted on the control lever.

### Claim 11 (depends on 5)

Assembly according to claim 5, comprising a cable adjustment device between the brake cable and the control lever.