Speed and direction control mechanism
US4406980A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 1981 |
| Grant date | Sep 27, 1983 |
| Priority date | — |
| Expiry date | May 26, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2009/068
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A mechanism for controlling the speed and direction of a self-propelled machine, such as, for example, a floor cleaning machine, or the like. A rotatable control handle is provided and includes a speed control cam which moves a variable resistor slide member by means of a speed control arm connected to the cam follower. The variable resistor is connected between a battery power source and a propulsion motor to control the voltage to a speed control. The handle has a neutral position at which the machine is stationary, and rotation of the handle about its own axis in either direction will cause the motor to move the machine, the direction of rotation determining the direction of movement. The control handle carries a series of direction control cams which operate switches to control the direction of flow of current to the motor and thereby the direction in which the machine moves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.