Temperature compensating vacuum delay valve
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United States of America Patent
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-
Feb 17, 1987
Issued Date -
N/A
app pub date -
Jun 2, 1986
filing date -
Dec 3, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
For use in applying a vacuum to a choke pull-off assembly, a temperature compensating vacuum delay valve comprising a housing a first opening adapted to be connected to manifold vacuum and a second opening adapted to be connected to a choke pull-off assembly which functions to partially open the choke when a vacuum is applied. The housing includes a valve disc, yieldingly urged against the seat. A restrictor permits restricted flow between the one side of the valve disc and the other side of the valve disc when the valve disc is in sealing and a bi-metallic disc is positioned in the housing between the first opening and the valve disc and is operable upon predetermined change of temperature to move the valve disc away from a seat and thereby permit unrestricted flow between the first opening and the second opening. The valve disc is spring loaded against the seat such that it will open and allow unrestricted flow in the reverse direction.
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