Inflation assemblies
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United States of America Patent
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-
Apr 3, 2001
Grant Date -
N/A
app pub date -
Nov 10, 1998
filing date -
Mar 24, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A pump is formed by a pair of sleeves 1,2 each of which is closed at one end. The end of sleeve 2 incorporates an inlet valve in the form of a membrane 11 which lifts to allow air to enter the pump through an opening 22 as the pump sleeves 1,2 are extended. When the sleeves 1,2 are closed against one another, the membrane 11 closes and a second membrane 12 lifts to allow air to pass through opening 15 communicating with a connection 16 for attachment to the inflation inlet 5 of an inflatable mattress 3. A pressure relief valve 17 prevents the mattress 3 from being over-inflated. The deflated mattress 3 can be stored in the space within the two sleeves 1,2.
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