Continuously variable transmission
US-2015226323-A1 · Aug 13, 2015 · US
Automatic transmissions and methods therefor
US9739375B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9739375-B2 |
| Application number | US-201615012420-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 1, 2016 |
| Priority date | Dec 21, 2007 |
| Publication date | Aug 22, 2017 |
| Grant date | Aug 22, 2017 |
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Abstract
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Systems and methods for controlling transmissions and associated vehicles, machines, equipment, etc., are disclosed. In one case, a transmission control system includes a control unit configured to use a sensed vehicle speed and a commanded, target constant input speed to maintain an input speed substantially constant. The system includes one or more maps that associate a speed ratio of a transmission with a vehicle speed. In one embodiment, one such map associates an encoder position with a vehicle speed. Regarding a specific application, an automatic bicycle transmission shifting system is contemplated. An exemplary automatic bicycle includes a control unit, a shift actuator, various sensors, and a user interface. The control unit is configured to cooperate with a logic module and an actuator controller to control the cadence of a rider. In one embodiment, a memory of, or in communication with, the control unit includes one or more constant cadence maps that associate transmission speed ratios with bicycle speeds.
First claim
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What is claimed is: 1. A method of controlling a ball-planetary continuously variable transmission (CVT) on a bicycle comprising a controller, the ball-planetary CVT having a plurality of balls, each ball being rotatable about a tiltable axle, the angle of the axle defining a transmission ratio, the method comprising: receiving, from a user, an input selecting one of a manual mode and an automatic mode; if the received input is associated with the manual mode, performing, using…
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Frequently asked questions
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- What does patent US9739375B2 cover?
- Systems and methods for controlling transmissions and associated vehicles, machines, equipment, etc., are disclosed. In one case, a transmission control system includes a control unit configured to use a sensed vehicle speed and a commanded, target constant input speed to maintain an input speed substantially constant. The system includes one or more maps that associate a speed ratio of a trans…
- Who is the assignee on this patent?
- Fallbrook Ip Co Llc
- What technology area does this patent fall under?
- Primary CPC classification B62M11/16. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Aug 22 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 12 related publications on this page (citations in our corpus or others sharing the same primary CPC).