Adjuster systems for continuous variable transmissions
OwnerArmin Sebastian Tayinventor
Life of this patent
Estimating the term…
Abstract
Rotational position adjuster systems that can increase the performance of CVTs that suffer from either or both transition flexing and a limited duration at which the transmission ratio can be changed by providing proper rotational adjustment.
Claims9
A method for increasing the duration at which the transmission ratio can be changed for a CVT comprising of two alternating torque transmitting members, each positioned on a conical surface and each coupled directly or through the use of a means for coupling to a rotational energy conveying device, that are used to transmit torque from a common input shaft to a common output shaft,
- said alternating torque transmitting members are referred to as first torque transmitting member and second torque transmitting member,
- said first torque transmitting member is coupled to a first rotational energy conveying device and said second torque transmitting member is coupled to a second rotational energy conveying device,
- said method for increasing the duration at which the transmission ratio can be changed comprises of providing adjustments, in instances when both said first torque transmitting member and said second torque transmitting member are transmitting torque from or to their said rotational energy conveying device, that adjusts the rotational position of said first rotational energy conveying device relative to said second rotational energy conveying device in a manner as to compensate for the difference in rotation due to transmission ration change of said first torque transmitting member and said second torque transmitting member.
A method for eliminating or reducing transition flexing that occurs when a toothed second torque transmitting member engages with its means for coupling, such as a transmission belt or chain,
- for a rotating means for conveying rotational energy on which said second torque transmitting member is rotatably oppositely positioned relative to a toothed first torque transmitting member, which is currently engaged with said means for coupling comprising:
- a) in all instances except in instances where a critical non-torque transmitting arc, which is the circumferential arc length between said first torque transmitting member and said second torque transmitting member that is about to be covered by said means for coupling, is a multiple of the width of a tooth of the teeth of said first torque transmitting member and of the teeth of said second torque transmitting member, adjusting the rotational position of said second torque transmitting member relative to the rotational position of said first torque transmitting member in a manner such that said critical torque transmitting arc is multiple of the width of a tooth of the teeth of said first torque transmitting member and of the teeth of said second torque transmitting member.
A method for eliminating or reducing transition flexing that occurs when a toothed second torque transmitting member, mounted on a rotating second means for conveying rotational energy, comes into engagement with a second means for coupling, such as a transmission belt or chain,
- for a configuration where said second means for conveying rotational energy and a first means for conveying rotational energy, on which a toothed first torque transmitting member is mounted, have a common axis of rotation,
- and where said second means for conveying rotational energy is coupled to said second means for coupling such that it alternately comes in and out of engagement with a said second means for coupling, and where said first means for conveying rotational energy is coupled to said first means for coupling such that it alternately comes in and out of engagement with said first second means for coupling;
- and where said second means for conveying rotational energy and said first means for conveying rotational energy are rotationally mounted such that said second torque transmitting member is rotationally oppositely positioned relative to a said first torque transmitting member, which is currently engaged with a said first means for coupling comprising:
- a) in all instances except in instances where a critical non-torque transmitting arc length, which is the circumferential arc length between said first torque transmitting member and said second torque transmitting member, is a multiple of the width of a tooth of the teeth of said first torque transmitting member and of the teeth of said second torque transmitting member, adjusting the rotational position of said second means for coupling relative to the rotational position of said first means coupling as to compensate for the length of said critical non-torque transmitting arc length that exceeds a multiple of the width of a tooth of the teeth of said first torque transmitting member and of the teeth of said second torque transmitting member.
Dependencies are inferred from the claim text.