Automatic speed control system for motorcycles

• US 4,966,247 A
• Filed: 10/24/1988
• Issued: 10/30/1990
• Est. Priority Date: 08/31/1983
• Status: Expired due to Term

• Current Assignee: Yamaha Hatsudoki Kabushiki Kaisha (Yamaha Corporation)
• Original Assignee: Yamaha Hatsudoki Kabushiki Kaisha (Yamaha Corporation)
• Inventors: Masuda, Yutaka
• Primary Examiner(s): Davis, Jr., Albert W.
• Application Number:
  US07/261,130
• Time in Patent Office: 736 Days
• Field of Search: 180/171, 180/176, 180/177, 180/170, 180/219, 340/54
• US Class Current: 180/171
• CPC Class Codes: B60K 31/06 including fluid pressure actuated servomechanism in which the vehicle velocity affecting element is actuated by fluid pressure
• CPC Class Codes: B60K 31/102 where at least one electrical quantity is set by the vehicle operator
• CPC Class Codes: B60K 31/18 including a device to audibly, visibly, or otherwise signal the existence of unusual or unintended speed to the driver of the vehicle devices primarily intended for indicating speed to other traffic B60Q1/54
• CPC Class Codes: B60K 35/60 Instruments characterised by their location or relative disposition in or on vehicles arrangements of lighting devices on dashboards B60Q3/10
• CPC Class Codes: B60Y 2200/12 Motorcycles, Trikes; Quads; Scooters

Abstract

An automatic speed control mechanism for a motorcycle that embodies a separately driven vacuum pump for controlling the throttle valve of the motorcycle independently of its induction system vacuum. In addition, an indicator system is provided that indicates when the automatic speed control is operative and further which indicates the preset speed and the actual speed of travel. A manual arrangement is provided for manually overriding the automatic speed control so as to reduce vehicle speed without disabling the automatic speed control device.

Claims

1. In an automatic speed control for a motorcycle comprising throttle means for controlling vehicle speed, operator control means for selectively positioning said throttle means, and selectively operable automatic speed control means for operating said throttle means to operate the vehicle at a preset speed, the improvement comprising indicator means for indicating only when the automatic speed control means is selectively energized to control engine speed.

2. In an automatic speed control as set forth in claim 1 wherein the indicator means comprises an indicator light.