Browse Prior Art Database

Solvent Dispensing Hood

IP.com Disclosure Number: IPCOM000051739D
Original Publication Date: 1981-Mar-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 2 page(s) / 69K

Publishing Venue

IBM

Related People

Cohen, AJ: AUTHOR

Abstract

The amount of exhaust air required at a solvent-dispensing station can be markedly reduced by providing a vent hood with attached exhaust plenum which is movable over a perforated table surface from one to another of the dispensing valves.

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Solvent Dispensing Hood

The amount of exhaust air required at a solvent-dispensing station can be markedly reduced by providing a vent hood with attached exhaust plenum which is movable over a perforated table surface from one to another of the dispensing valves.

Referring to the figure, a hood 1, closed on three sides, has secured beneath it an exhaust air plenum 2 with an exhausting duct 3 connected to a fan system (not shown). Worktable surface 4 is perforated to allow air to be drawn downwardly from the open portions of the hood into the exhaust system. The hood and air chamber are provided with rollers 5 which move in rails 6 on support members 7 secured to legs 8. An enclosed service module 9 is provided at the rear of the dispensing station to which supply pipes for various solvents are brought. The service module can enclose timing valves and filters, as necessary. Along the front surface 10 of the service module is a series of hand operated valves 11 and safety switches 12.

When the hood is pushed to the selected valve and centered in position, it will activate a switch (not shown) which starts the exhaust fan. This fan circuit also activates the safety switch circuit which has to be energized before liquid is supplied to the corresponding manually-operated valve. The exhaust system and valve control system can be timer-monitored, requiring resetting if dispensing exceeds the present time.

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