Redundant control circuit for hot melt adhesive hose assembly heater circuits and temperature sensors
US7605351B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2005 |
| Grant date | Oct 20, 2009 |
| Priority date | — |
| Expiry date | May 14, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B19/048
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A hot melt adhesive hose assembly has a redundant control circuit fixedly mounted thereon which comprises a pair of heater circuits for heating a hot melt adhesive hose assembly to a predetermined temperature level, and a pair of temperature sensors which are used to sense the temperature of the hot melt adhesive hose assembly wherein the sensed temperature level will be used to control energization of the heater circuits in order to maintain the desired temperature level. A first one of the heater circuits is initially electrically connected to the hot melt adhesive hose assembly electrical circuitry, and in a similar manner, a first one of the temperature sensors is likewise electrically connected to the hot melt adhesive hose assembly electrical circuitry. Should a failure occur within the first one of the heater circuits, or within a first one of the temperature sensors, electrical switch mechanisms are activated so as to effectively remove the first, failed heater circuit or the first failed temperature sensor from the hot melt adhesive hose assembly electrical circuitry, and substantially simultaneously therewith, electrically connect the second one of the heater circuits or …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.