Internal-combustion engines – Lubricators – Crankcase – pressure control
Patent
1988-07-13
1989-08-08
Cross, E. Rollins
Internal-combustion engines
Lubricators
Crankcase, pressure control
210238, 184 15, F01M 100
Patent
active
048542776
ABSTRACT:
A liquid flow blocking device for use during flushing of the crankcase of an internal combustion engine is disclosed including a plastic disk-shaped member having a central aperture through which the threaded pipe portion of a spin-on oil filter mounting assembly is received, after which a filter is mounted to retain the disk-shaped member adjacent the mounting assembly. Alternatively, a semi-spherical blocking device threadedly mounts to the mounting assembly, replacing the filter. Each device blocks external flow of liquid between oil outflow and inflow passages of the mounting assembly, therby causing flow of liquid through an internal filter bypass valve within the filter mounting assembly. A method of flushing an engine crankcase is disclosed using such a blocking device.
REFERENCES:
patent: 1509327 (1924-09-01), Winchester
patent: 1584505 (1926-05-01), Bevins
patent: 1696100 (1928-12-01), Osborne
patent: 3431145 (1969-03-01), Riley
patent: 3489245 (1970-01-01), Broadwell
patent: 4174231 (1979-11-01), Hobgood
patent: 4197140 (1980-04-01), Swan
patent: 4361207 (1982-11-01), Sylvestre et al.
patent: 4507199 (1985-03-01), Carlisle
Ahlersmeyer David L.
Cross E. Rollins
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