Liquid filter with bypass passage
This patent describes a liquid filter for filtering the lubricating oil of an internal combustion engine. It includes a housing defining a chamber therewithin, filtering media within the housing dividing the chamber into an inlet section and an outlet section, inlet means and outlet means for communicating the lubricating oil into the inlet section and out of the outlet section during normal running of the internal combustion engine, and bypass means permitting reverse flow of lubricating oil from the outlet section to the inlet section bypassing the media during initial filling of the engine with lubricating oil after manufacture of the engine but before the engine is first started, the bypass means including aperture means between the inlet and outlet sections for permitting the lubricating oil to pass from the outlet section to the inlet section and valve means responsive to liquid pressure in the inlet section.
- Assignee:
- Allied-Signal Inc., Morristown, NJ (USA)
- Patent Number(s):
- US 5037539; A
- Application Number:
- PPN: US 7-349682
- OSTI ID:
- 5774910
- Country of Publication:
- United States
- Language:
- English
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