Aerodynamic Brake System
First Claim
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1. A bicycle having an aerodynamic brake system, the bicycle comprising:
- left and right cantilever brake arms having art aerodynamic teardrop shape leading portion; and
a front fork having left and right legs, each of the legs defining a leading edge and a trailing edge with an aerodynamic teardrop shape cross section, each of the legs having a recess at a leading portion of the leg with the left and right cantilever brake arms disposed within the recesses of the left and right legs wherein the exterior surfaces of the left and fight cantilever brake arms and exterior surfaces of the left and right legs collectively have a teardrop aerodynamic cross sectional configuration.
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Accused Products
Abstract
An aerodynamic braking system is disclosed herein. In particular, the brake arms may define an aerodynamic leading portion or edge and may be integrated into the legs of the front fork. Also, the brake arms may be disposed behind the bottom bracket shell to take the rear brake out of the air flow path and reduce aerodynamic drag. The rear brake arms are tapered so that the brake arms remain sufficient stiff to provide sufficient brake response times. The rear brake arms may be matched to recesses formed on an underside of chain stays.
11 Citations
17 Claims
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1. A bicycle having an aerodynamic brake system, the bicycle comprising:
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left and right cantilever brake arms having art aerodynamic teardrop shape leading portion; and a front fork having left and right legs, each of the legs defining a leading edge and a trailing edge with an aerodynamic teardrop shape cross section, each of the legs having a recess at a leading portion of the leg with the left and right cantilever brake arms disposed within the recesses of the left and right legs wherein the exterior surfaces of the left and fight cantilever brake arms and exterior surfaces of the left and right legs collectively have a teardrop aerodynamic cross sectional configuration. - View Dependent Claims (2, 3)
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4. A bicycle having an aerodynamic brake system, the bicycle comprising:
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left and right cantilever brake arms, each of the left and right cantilever brake arms define a pivoting portion and an actuation portion with the pivoting potion being stiffer than the actuation portion; and a frame defining a bottom bracket shell and lea and right chain stays, each chain stay having a recess at a bottom side of the chain stays, the recess sized and configured to receive the left or right cantilever brake arm and match a profile of the left or right cantilever brake arm so that the left and right cantilever brake arms are entiriely behind the bottom bracket shell arid out of the air flow as the bicycle is moving forward; bolts attached to both the left and right cantilever brake arms for pivotally securing the left and right cantilever brake arms to the left and right chain stays; and a cable attached to the left and right cantilever brake arms for actuating the brake system. - View Dependent Claims (5)
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6. A bicycle having an aerodynamic brake system, the bicycle comprising:
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left and right cantilever brake arms, each of the left and right cantilever brake arms define a pivoting portion and an actuation portion with the pivoting portion being stiffer than the actuation portion; and a frame defining a bottom bracket shell and left and right chain stays, each chain stay having a recess at a bottom side of the chain stays, the recess sized and configured to receive the left or right cantilever brake arm and match a profile of the left or right cantilever brake arm so that the left and right cantilever brake arms are substantially or entirely behind the bottom bracket shell and out of the air flow as the bicycle is moving forward; wherein the pivoting portions of the left and right cantilever brake arms are pivotally mounted within the recesses of the left and right chain stays, and a first depth of the recesses adjacent the pivoting portions is greater than a second depth of the recesses adjacent to the actuation portions to provide for sufficiently stiff chain stays.
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7. A bicycle having an aerodynamic brake system, the bicycle comprising:
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left and right brake arms, each of the left and right brake arms defining a pivoting portion and an actuation portion; and a front fork having left and right legs, each of the legs having a recess for receiving the left and right brake arms, the recesses being closer to a crown of the leg than front dropouts, the left and right brake arms disposed within the recesses of the left and right legs, a first depth of the recesses adjacent the pivoting portions is greater than a second depth of the recesses adjacent to the actuation portions to provide for a sufficiently strong fork crown. - View Dependent Claims (8)
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9. A bicycle haying an aerodynamic brake system, the bicycle comprising:
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left and right brake arms, each of the left and right brake arms define a pivoting portion and an actuation portion; and left and right chain stays, each of the chain stays having a recess for receiving the left and right brake arms, the recesses being closer to a bottom bracket shell than rear dropouts, the left and right brake arms disposed within the recesses of the left and right legs, a first depth of the recesses adjacent the pivoting portions is greater than a second depth of the recesses adjacent to the actuation portions to provide for a sufficiently strong fork crown. - View Dependent Claims (10)
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11. A disc brake system mounted to a road bicycle, the bicycle comprising:
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a front fork of the road bicycle, the from fork having left and right legs; a front wheel of the road bicycle mounted to the left and right legs; left and right discs mounted on opposed left and right sides of the front wheel; left and right brake pads mounted to the left and right legs of the front fork for applying brake forces to the left and right disc pads simultaneously to mitigate pulling to one side and reducing load on any one of the left and right legs of the front fork.
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12. A bicycle having a braking system, the bicycle comprising:
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a handlebar; front and rear brake levers mounted to the handlebar; a front fork attached to the handlebar; a frame with the handlebar and front fork rotatably attached to the frame; front brakes mounted to the front fork; rear brakes mounted to the frame; brake lines internally routed through the frame and handlebar to improve aerodynamic characteristics of the bicycle. - View Dependent Claims (13)
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14. A bicycle having an aerodynamic brake system, the bicycle comprising:
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left and right brake arms, each of the left and right cantilever brake arms define a pivoting portion and an actuation portion with the pivoting portion being stiffer than the actuation portion; a front fork having left and right legs, each of the left and right legs having recesses for receiving the left and right brake arms, the recess sized and configured to receive the left or right brake arm and match a profile of the left or right cantilever brake arm; bolts attached to both the left and right cantilever brake arms for pivotally securing the left and right cantilever brake arms to the left and right legs; and a cable attached to the left and right cantilever brake arms for actuating the brake system. - View Dependent Claims (15, 16, 17)
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Specification