Other

The Dow Chemical Company

James H Cullen

James Taranto

Joseph Ellison

Dale H Schultz

Peter A Troisi

Susan J Johnson

Stanley R Nunn

James E Uban

James D Allbery, Jr

James P Ferreira

Chiman L Patel

Richard L Butler

An intelligent front-end communication system which is interposed between a plurality of actively redundant process control computers and a computer network. The intelligent front end communication system includes at least one front end computer which is coupled to the computer network, and a serial communication interface which is coupled between the actively redundant process control computers and the front end computer. The serial communication interface transmits sequential sets of dynamic data from the actively redundant process control computers to the front end computer. The front end computer includes a plurality of reflective or shadow memory buffers for storing and time aligning corresponding sets of dynamic data which are asynchronously received from the serial communication interface.

Intelligent process control communication system and method having

A method and apparatus for the automatic connection of battery cables to eliminate spark or other undesirable effects from misconnection includes apparatus for sensing the polarity of the batteries to which the cables are attached and for automatically switching the connection cables so that the polarities are matched. Other portions of the circuit inhibit charging if one of the clamps becomes disconnected from a battery post or if a battery is below a predetermined small voltage indicating either an unchargeable battery or a disconnected cable condition. A specialized battery cable clamp is provided in which one set of jaws is insulated from the other, with a standoff preventing the jaws from touching each other. Once predetermined conditions have been met and the sense of the terminals on each of the batteries has been periodically ascertained, the main switching relays are activated so as to connect the appropriate main battery cables from one battery to another.

Method and apparatus for the automatic connection of battery cables

The device includes a speedometer in an automobile, having a speed scale and a pointer; the speedometer has photo-electric means and a shield on the pointer to interrupt the light rays in the photo-electric means, above a predetermined speed, for effecting warning signals or inhibiting excess speed; the PE arrangement eliminates mechanical contacts in the speedometer; the warning signals include external warning light viewable by others than those in the automobile such as other drivers and the traffic police, and includes a shifting down of automatic trasmission, for reducing speed; other forms of the invention are adapted to industrial installations.

Speed-control system for an engine-powered vehicle

Growing community of inventors

Bedford, MA, United States of America

James H Cullen