Motorcycle brakes

Claim 2

In a motorcycle including a frame a rear wheel having an axle a pair of trailing suspension arms pivotally mounted on said frame for simultaneous pivotal movement about a transverse axis, and a pair of resiliently compressible suspension elements extending from the free ends of said suspension arms upward to said frame that improvement which consists of: a rear wheel brake assembly comprising a brake disk mounted on said wheel a brake caliper element assembly a caliper element assembly arm pivotally mounted on said frame above and spaced from one of said trailing suspension arms and generally parallel thereto, said brake caliper element assembly being mounted on the free end of said caliper element arm extending downwardly therefrom for cooperation with the upper portion of said brake disk and a positioning radius link pivotally connected to said brake caliper element assembly adjacent the lower end thereof, extending downwardly therefrom and pivotally connected adjacent said axle for positioning said caliper element.

Claim 3

In a motorcycle as claimed in claim 1 wherein said caliper element assembly arms is positioned inside of one of said suspension elements and a portion of said frame between them and said rear wheel for protection of said caliper element assembly arm.

Claim 4

In a motorcycle as claimed in claim 2 wherein said positioning radius link is connected to said axle concentrically thereto.

Claim 5

In a motorcycle as claimed in claim 3 wherein said brake caliper element is hydraulically operated and further including a hydraulic brake piston and cylinder connected to said brake caliper element and a brake lever pivotally mounted on said motorcycle for operating said piston.

Claim 6

In a motorcycle comprising a frame having a bottom portion a rear wheel having an axle a pair of trailing suspension arms pivotally mounted on said frame for simultaneous pivotal movement about a horizontal axis, a pair of resiliently compressible suspension elements extending from the free ends of said suspension arms upwardly to said frame that improvement which consists of: a rear wheel brake assembly comprising a brake disk mounted on said wheel a hydraulic brake caliper element assembly a caliper element arm pivotally mounted on said frame above and spaced from one of said trailing suspension arms and generally parallel thereto, said brake caliper element assembly being mounted on the free end of said caliper element arm extending downwardly therefrom for cooperation with the upper portion of said brake disk a positioning radius link pivotally connected to said caliper elEment assembly adjacent the lower end thereof, extending downwardly therefrom and pivotally connected to said axle concentrically thereto for positioning said caliper element assembly, and a brake pedal assembly mounted on the lower portion of said frame including a rearwardly extending brake pedal arm pivotally mounted on the lower portion of said frame and having an upwardly extending rigid operating arm, a hydraulic brake piston and cylinder mounted on the lower portion of said frame and connected to said hydraulic brake caliper element and a generally horizontal connecting link extending rearwardly from said operating arm to said piston.

Claim 7

In a motorcycle comprising a frame having a bottom portion a rear wheel having an axle a pair of trailing suspension arms pivotally mounted on said frame for simultaneous pivotal movement about a horizontal axis, a pair of resiliently compressible suspension elements extending from the free ends of said suspension arms upwardly to said frame that improvement which consists of: a rear wheel brake assembly comprising a brake disk mounted on said wheel a hydraulic brake caliper element assembly a caliper element arm pivotally mounted on said frame above and spaced from one of said trailing suspension arms and generally parallel thereto, said brake caliper element assembly being mounted on the free end of said caliper element arm extending downwardly therefrom for cooperation with the upper portion of said brake disk a positioning radius link pivotally connected to said caliper elEment assembly adjacent the lower end thereof, extending downwardly therefrom and pivotally connected to said axle concentrically thereto for positioning said caliper element assembly, and a brake pedal assembly mounted on the lower portion of said frame including a rearwardly extending brake pedal arm pivotally mounted on the lower portion of said frame and having an upwardly extending rigid operating arm, a hydraulic brake piston and cylinder mounted on the lower portion of said frame and connected to said hydraulic brake caliper element and a generally horizontal connecting link extending rearwardly from said operating arm to said piston.

Claim 8

In a motorcycle including a frame having a bottom portion and a rear wheel having a hydraulic brake that improvement which consists of: a brake pedal assembly mounted on the lower portion of said frame including a rearwardly extending brake pedal arm pivotally mounted on the lower portion of said frame and having an upwardly extending rigid operating arm, a rear hydraulic brake piston and cylinder mounted on the lower portion of said frame and connected to said hydraulic brake caliper element and a generally horizontal connecting link extending rearwardly from said operating arm to said piston.

Claim 9

In a motorcycle including a frame having a bottom portion and a rear wheel having a hydraulic brake that improvement which consists of: a brake pedal assembly mounted on the lower portion of said frame including a rearwardly extending brake pedal arm pivotally mounted on the lower portion of said frame and having an upwardly extending rigid operating arm, a rear hydraulic brake piston and cylinder mounted on the lower portion of said frame and connected to said hydraulic brake caliper element and a generally horizontal connecting link extending rearwardly from said operating arm to said piston.

Claim 10

A motorcycle comprising a frame having a bottom portion a rear wheel having an axle and a chain sprocket a power unit having a chain sprocket and mounted in fixed position on said frame bottom portion a chain trained around said sprockets for driving said rear wheel a pair of trailing suspension arms pivotally mounted on said frame for simultaneous pivotal movement about a horizontal axis, said suspension arms at their trailing ends having adjustable axle mounting means for adjusting said chain a pair of resiliently compressible suspension elements extending from the free ends of said suspension arms upwardly to said frame a brake disk mounted on said wheel a hydraulic brake caliper element assembly cooperating with said brake disk a caliper element assembly arm pivotally mounted on said frame above and spaced from one of said trailing suspension arms and generally parallel thereto, behind one of said suspension elements and a portion of said frame said caliper element assembly being mounted on the free end of said caliper element arm extending downwardly therefrom for cooperation with the upper portion of said brake disk a positioning radius link pivotally connected to said caliper element assembly adjacent the lower end thereof, extending downwardly therefrom and pivotally connected to said axle concentrically thereof for positioning said caliper element assembly during rear wheel adjustment.

Claim 11

A motorcycle comprising a frame having a bottom portion a rear wheel having an axle and a chain sprocket a power unit having a chain sprocket and mounted in fixed position on said frame bottom portion a chain trained around said sprockets for driving said rear wheel a pair of trailing suspension arms pivotally mounted on said frame for simultaneous pivotal movement about a horizontal axis, said suspension arms at their trailing ends having adjustable axle mounting means for adjusting said chain a pair of resiliently compressible suspension elements extending from the free ends of said suspension arms upwardly to said frame a brake disk mounted on said wheel a hydraulic brake caliper element assembly cooperating with said brake disk a caliper element assembly arm pivotally mounted on said frame above and spaced from one of said trailing suspension arms and generally parallel thereto, behind one of said suspension elements and a portion of said frame said caliper element assembly being mounted on the free end of said caliper element arm extending downwardly therefrom for cooperation with the upper portion of said brake disk a positioning radius link pivotally connected to said caliper element assembly adjacent the lower end thereof, extending downwardly therefrom and pivotally connected to said axle concentrically thereof for positioning said caliper element assembly during rear wheel adjustment.

Claim 12

A motorcycle as claimed in claim 7 wherein the bottom portion of said frame includes a pair of transversely spaced frame members having a sheet metal plate extending therebetween the central portion of said plate being formed to provide a pair of longitudinal upwardly extending spaced vertical walls with a horizontal transverse wall extending between the upper ends thereof providing an upwardly extending open bottomed recess between said vertical walls and a plurality of bolts mounting said power unit on the upper surface of said horizontal transverse wall, said bolts having heads positioned beneath the lower surface of said transverse wall recessed above the lower ends of said upwardly extending walls for protecting said bolt heads while providing access thereto.

Claim 13

A motorcycle as claimed in claim 8 further including a brake pedal assembly mounted on the bottom portion of said frame including a rearwardly extending brake pedal arm pivotally mounted on the lower portion of said frame and having an upwardly extending rigid operating arm, a rear hydraulic brake piston and cylinder connected to said hydraulic brake caliper element a plurality of bolts mounting said brake cylinder on one of said longitudinal upwardly extending walls and a generally horizontal connecting link extending rearwardly from said operating arm to said piston.

Claim 14

A motorcycle as claimed in claim 9 further including a vertically extending guard plate mounted adjacent the free end of said brake pedal arm extending upwardly closely adjacent to and beside the lower portion of said frame.