Rolled threaded filter bowl
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United States of America Patent
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-
Apr 6, 1999
Grant Date -
N/A
app pub date -
Apr 9, 1997
filing date -
Jan 3, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A filter bowl is disclosed. The filter bowl includes an elongated canister having an open end, a closed end and a wall having an exterior surface, the exterior surface having a plurality of rolled threads. The exterior surface includes an unthreaded portion disposed between the open end and the plurality of rolled threads. The filter bowl is preferably made of steel and is produced in a process including the steps of: 1) deep drawing the elongated canister and 2) rolling threads onto the exterior surface of the canister.
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