# US 2008/0185237 A1 · Dual bicycle braking system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2008/0185237 A1 - Document ID: US20080185237A1 - Status: Published application - Kind: A1 - Application number: 11/702,401 - Filed: 2007-02-06 - Published: 2008-08-07 - Earliest claimed: 2007-02-06 - Inventors: Andy Moon - Web page: https://patentgrep.com/patent/US20080185237A1 ## CPC - B60T 7/102: {by means of a tilting lever} - B60T 1/06: acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission {or on double wheels} - B60T: VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL (electrodynamic brake systems for vehicle, in general B60L; brakes per se, i.e. devices where braking effect occurs, including ultimate brake actuators, F16D); ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES ## Abstract A dual bicycle braking system for applying greater braking force to the front wheel of a bicycle than to the back wheel, the system having front and rear brakes controlled by front and rear hand brake levers, the rear lever operationally secured to a singular rear caliper break, the front brake lever operationally secured to a primary cable, which in turn is secured to first and second actuating cables, the first actuating cable operates a first caliper brake and the second actuating cable operates a second caliper brake, both of which engage the front wheel of the bicycle to apply greater braking force to the front wheel than is applied to rear wheel by the rear caliper brake, the first actuating cable may be shorter than the second actuating cable so that the first caliper brake engages the front wheel before the second caliper brake does to provide graduated de-acceleration, or alternatively, the tension in first caliper brake may be less than in the second caliper brake to insure the same result. ## Claims ### Claim 1 A bicycle braking system for controlling the de-acceleration of a bicycle, said bicycle having at least a front wheel and a rear wheel, each of said wheels having side walls, said wheels secured to a frame, said frame having handle bars comprising: a first caliper brake and a second caliper brake secured to said bicycle frame, each of said caliper brakes positioned about said front wheel for actively engaging said side walls of said front wheel, said first caliper brake having a first set of diametrically opposed brake pads, said second caliper brake having a second set of diametrically opposed brake pads; a front brake lever secured; a primary brake cable engaging said front brake lever, said primary brake cable having a terminal end; and, a short actuating brake cable and a long actuating cable, said short actuating cable having a length that is less than the length of said long actuating cable, said short and long actuating cables joined to said primary brake cable forming a fork, said short actuating cable engaging said first caliper brake, said long actuating cable engaging said second caliper brake such that operation of said front brake lever causes tension in said primary cable to translate into increased tension in said short actuating cable resulting in the braking action of said first caliper brake before tension in said primary cable is translated to said long actuating cable resulting in the delayed braking action of said second caliper brake. ### Claim 2 (depends on 1) A dual bicycle braking system as in claim 1 wherein said system includes an elongated housing encasing said fork, said housing having a primary cable aperture through which said primary cable enters said housing, said housing having two actuating cable apertures through which said short actuating cable and said long actuating cable separately exit said housing. ### Claim 3 (depends on 1) A dual bicycle braking system as in claim 1 wherein said short and long actuating cables are equal lengths. ### Claim 4 (depends on 1) A dual bicycle braking system as in claim 1 wherein said first caliper brake has a first tension spring and said second caliper brake has a second tension spring, tension in said first tension spring being greater than that in said second tension spring. ### Claim 5 (depends on 4) A dual bicycle braking system as in claim 4 wherein said first set of break pads and second set of brake pads are the same thickness. ### Claim 6 A bicycle braking system for controlling the de-acceleration of a bicycle, said bicycle having at least a front wheel and a rear wheel, each of said wheels having side walls, said wheels secured to a frame, said frame having handle bars comprising: a first caliper brake and a second caliper brake secured to said bicycle frame, each of said caliper brakes positioned about said front wheel for actively engaging said side walls of said front wheel, said first caliper brake having a first set of diametrically opposed brake pads, said second caliper brake having a second set of diametrically opposed brake pads; a front brake lever secured to said handle bars of said bicycle for controlling the rotation of said front wheel; a rear brake lever secured to said handle bars of said bicycle for controlling the rotation of said rear wheel, said rear brake lever engaging a rear brake cable, said rear brake cable secured to a rear caliper brake positioned to engage said side walls of said rear wheel; a primary brake cable engaging said front brake lever, said primary brake cable having a terminal end; a short actuating brake cable and a long actuating cable, said short actuating cable having a length that is less than the length of said long actuating cable, said short and long actuating cables joined to said primary brake cable forming a fork, said short actuating cable engaging said first caliper brake, said long actuating cable engaging said second caliper brake such that operation of said front brake lever causes tension in said primary cable to translate into increased tension in said short actuating cable resulting in the braking action of said first caliper brake before tension in said primary cable is translated to said long actuating cable resulting in the delayed braking action of said second caliper brake; and, an elongated housing encasing said fork, said housing having a primary cable aperture through which said primary cable enters said housing, said housing having two actuating cable apertures through which said short actuating cable and said long actuating cable separately exit said housing. ### Claim 7 (depends on 6) A dual bicycle braking system as in claim 6 wherein operation of said front brake lever and said rear brake lever simultaneously causes the said first caliper brake to engage said front wheel rim at the same moment as said rear caliper brake engages said rear wheel rim. ### Claim 8 (depends on 6) A dual bicycle braking system as in claim 6 wherein said short and long actuating cables are equal lengths. ### Claim 9 (depends on 6) A dual bicycle braking system as in claim 6 wherein said first caliper brake has a first tension spring and said second caliper brake has a second tension spring, tension in said first tension spring being greater than that in said second tension spring. ### Claim 10 (depends on 6) A dual bicycle braking system as in claim 6 wherein said first set of break pads is thinner than said second set of brake pads. ### Claim 11 A bicycle braking system for controlling the de-acceleration of a bicycle, said bicycle having at least a front wheel and a rear wheel, each of said wheels having side walls, said wheels secured to a frame, said frame having handle bars comprising: a first caliper brake and a second caliper brake secured to said bicycle frame, each of said caliper brakes positioned about said front wheel for actively engaging said side walls of said front wheel, said first caliper brake having a first set of diametrically opposed brake pads, said second caliper brake having a second set of diametrically opposed brake pads; a front brake lever secured to said handle bars of said bicycle for controlling the rotation of said front wheel; a rear brake lever secured to said handle bars of said bicycle for controlling the rotation of said rear wheel, said rear brake lever engaging a rear brake cable, said rear brake cable secured to a rear caliper brake positioned to engage said side walls of said rear wheel; a primary brake cable engaging said front brake lever, said primary brake cable having a terminal end; and, a first actuating brake cable and a second actuating cable, said first actuating cable having a length equal to the length of said second actuating cable, said first and second actuating cables joined to said primary brake cable forming a fork, said first actuating cable engaging said first caliper brake, said second actuating cable engaging said second caliper brake such that operation of said front brake lever causes tension in said primary cable to translate into increased tension in said first and second actuating cables resulting in simultaneous braking action of said first caliper brake and said second caliper brake. ### Claim 12 (depends on 11) A dual bicycle braking system as in claim 11 wherein an elongated housing encases said fork, said housing having a primary cable aperture through which said primary cable enters said housing, said housing having two actuating cable apertures through which said first actuating cable and said second actuating cable separately exit said housing. ### Claim 13 (depends on 11) A dual bicycle braking system as in claim 11 wherein operation of said front brake lever and said rear brake lever simultaneously causes the said first and second caliper brakes to engage said front wheel rim at the same moment as said rear caliper brake engages said rear wheel rim. ### Claim 14 (depends on 11) A dual bicycle braking system as in claim 11 wherein said first caliper brake has a first tension spring and said second caliper brake has a second tension spring, tension in said first tension spring being less than that in said second tension spring.