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STIFF-END REED VALVE

IP.com Disclosure Number: IPCOM000025082D
Original Publication Date: 1983-Aug-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 57K

Publishing Venue

Xerox Disclosure Journal

Abstract

Vacuum corrugated feeders use valves to balance and control air flow. One type of valve used in such feeders is a reed valve. A conventional reed valve is simply a sheet of thin metal or other material fixed at one end and covering a vent on the other. High pressure behind the vent causes the metal to bend away from the vent which allows air to flow. '

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N XEROX DISCLOSURE JOURNAL

STIFF-END REED VALVE Proposed David Eisler Classification

U.S. C1. 137/803 Int. CI. F15c 1/00

Vacuum corrugated feeders use valves to balance and control air flow. One type of valve used in such feeders is a reed valve. A conventional reed valve is simply a sheet of thin metal or other material fixed at one end and covering a vent on the other. High pressure behind the vent causes the metal to bend away from the vent which allows air to flow. '

A problem with reed valves is that the bending ordinarily begins at the tip furthest from the fixed end and progresses towards the fixed end as the pressure increases. This requires the valve seat to be of a complex shape to minimize leaks which result in complicated flow behavior due to the varying shapes of the exhaust area. A solution is shown in the figure that comprises stiffening the end of the valve which covers the vent by increasing the material thickness or bending up the edge as shown. This solution allows the minimizing of leakage with a simple flat valve seat.

Volume 8 Number 4 July/August 1983 299

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  XEROX DISCLOSURE JOURNAL Volume 8 Number 4 July/August 1983

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