US PATENT SUBCLASS 123 / 479
.~.~.~.~ Backup systems, fail-safe, failure indicator

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


123 /   HD   INTERNAL-COMBUSTION ENGINES

434  DF  CHARGE FORMING DEVICE (E.G., POLLUTION CONTROL) {29}
445  DF  .~ Fuel injection system {5}
472  DF  .~.~ Electrically actuated injector {5}
478  DF  .~.~.~ Actuator circuit (e.g., engine condition responsive electronic circuit actuates injector valve) {15}
479.~.~.~.~ Backup systems, fail-safe, failure indicator

DEFINITION

Classification: 123/479

Backup systems, fail-safe, and failure indicator:

(under subclass 478) Subject matter wherein the system includes means to provide backup operation, or physical indication upon failure of any part of the system.

SEE OR SEARCH CLASS

701, Data Processing, Navigation, and Relative Location,

114, for backup, interrupt, reset, test of internal-combustion engines which include digital or programmable data processors.