Dispensing system and chemical flow heating means for use therein
US7490737B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2004 |
| Grant date | Feb 17, 2009 |
| Priority date | — |
| Expiry date | Aug 27, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1313
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A foam chemical dispenser apparatus having a chemical supply device and a dispenser device with housing and foam chemical output. A chemical passageway is provided from the source to the output. In a preferred embodiment, the passageway is at least partially defined by a hose and a chemical conduit formed in the dispenser housing. A heating system is included having a first heater element extending within the hose from a first end positioned closer to the chemical supply device to a second feedthrough supported end positioned closer to the dispenser device, and a second heating element is provided in the dispenser device. A temperature sensor system is included with a first temperature sensor positioned for sensing temperature of chemical in the hose and a second temperature sensor positioned for sensing chemical temperature in the dispenser device. A preferred embodiment has a control assembly communicating with the temperature sensor system and the heating system to maintain chemical traveling in the hose to the chemical outlet of the dispenser device at a chemical temperature above a predetermined minimum temperature (e.g., above 110 degrees F. despite the dispenser apparatus be…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.