Coupling for a bicycle
OwnerOskar R. Lohmaninventor
Life of this patent
Estimating the term…
Abstract
A coupling for a bicycle provided with a pedal operated brake actuator (8) which is separated from the drive chain, comprising a first freewheel coupling (8) which is associated with the pedal assembly for torque transfer to the brake actuator (8) at reverse rotation of the pedal crank, and a second freewheel coupling (43; 64; 143) for torque transfer to the drive wheel at forward rotation of the pedal crank, and a third freewheel coupling which is associated with the drive wheel and arranged to deactivate either of said first freewheel coupling or said second freewheel coupling (43; 64; 143) by means of a shifter (30; 65; 130) at reverse rotation of the drive wheel. A slip clutch (35, 36; 67, 69; 135, 136) is arranged to enable greater freedom of rotation as said third freewheel coupling is engaged.
Claims14
Coupling means for a bicycle having a drive wheel, a drive wheel hub, and a pedal crank assembly which operates a drive transmission and a brake activating means, said coupling means comprising:
- a first freewheel coupling associated with the pedal crank assembly for torque transfer to the brake activating means at reverse rotation of the pedal crank;
- a second freewheel coupling associated with the drive wheel hub of the bicycle for torque transfer to the drive wheel upon forward rotation of the pedal crank assembly;
- a third freewheel coupling associated with the drive transmission and adapted to be activated upon a reverse rotation of the drive wheel;
- and
- shifting means associated with said third freewheel coupling for preventing engagement of said second freewheel coupling when said third freewheel coupling is activated.
Coupling means for a bicycle having a drive wheel, a drive wheel hub, and a pedal crank assembly for operating a drive transmission and a brake activating means, said coupling means comprising:
- a first freewheel coupling associated with the pedal crank assembly for torque transfer to the brake activating means at reverse rotation of the pedal crank;
- a second freewheel coupling associated with the drive wheel hub of the bicycle for torque transfer to the drive wheel upon forward rotation of the pedal crank assembly;
- a third freewheel coupling associated with the drive transmission;
- means for activating and deactivating said third freewheel coupling;
- and
- shifting means associated with said third freewheel coupling for preventing engagement of said first freewheel coupling when said third freewheel coupling is activated.
Coupling means for a bicycle having a drive wheel, a drive wheel hub, and a pedal crank assembly for operating a drive transmission and a brake activating means, said coupling means comprising:
- a first freewheel coupling associated with the pedal crank assembly for torque transfer to the brake activating means at reverse rotation of the pedal crank;
- means in association with the drive wheel hub of the bicycle for torque transfer to the drive wheel hub upon forward rotation of the pedal crank assembly;
- a second freewheel coupling associated with the drive wheel hub and adapted to be engaged upon reverse rotation of the drive wheel;
- and
- engagement prevention means associated with said second freewheel coupling for preventing engagement of said first freewheel coupling while said second freewheel coupling is activated.
Coupling means for a bicycle provided with a pedal crank assembly for operation of a drive transmission including a drive chain and a brake activating means which is separate from the drive chain, comprising:
- a first freewheel coupling associated with the pedal crank assembly for torque transfer to the brake activating means at reverse rotation of the pedal crank;
- a second freewheel coupling associated with the pedal crank assembly for torque transfer to the drive chain at forward rotation of the pedal crank;
- and
- a third freewheel coupling associated with the pedal crank assembly of the bicycle and a shifting means connected to said third freewheel coupling and arranged to be activated by said third freewheel coupling at reverse rotation of the pedal crank assembly, and said shifting means including means for preventing engagement of said second freewheel coupling when said third freewheel coupling is activated.
Dependencies are inferred from the claim text.