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1. (WO2018222280) OIL FILTER/LIQUID INDICATOR ASSEMBLY
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WHAT IS CLAIMED IS:

1 . A bearing housing assembly comprising:

a bearing housing having

a bearing housing wall portion with a bearing assembly chamber configured or formed therein for receiving a combination of a bearing assembly and a shaft to be rotated,

an oil sump configured or formed therein for receiving and containing oil for lubricating the bearing assembly when the shaft is rotated,

an oil path channel configured or formed therein as an oil path for receiving dirty oil from the bearing assembly chamber for traveling down the oil path, and

a filter assembly wall portion configured to form a filter assembly cavity that is coupled fluidically between the oil sump and the oil path channel; and a filter assembly configured to mount in the filter assembly cavity, couple to the filter assembly wall portion, receive the dirty oil traveling down the oil path, filter the dirty oil and provide filtered oil to the oil sump, so the filtered oil can be recirculated to lubricate the bearing assembly when the shaft is rotated.

2. A bearing housing assembly according to claim 1 , wherein the filter assembly comprises a plug having a filter assembly mounting portion configured to couple to the filter assembly wall portion of the bearing housing.

3. A bearing housing assembly according to claim 2, wherein the filter assembly mounting portion and the filter assembly wall portion are coupled togethe using a threaded coupling arrangement, including where the filter assembly

mounting portion has threads that couple into corresponding threads of the filter assembly wall portion of the bearing housing.

4. A bearing housing assembly according to claim 2, wherein the plug

5 comprises a plug housing configured with a plug groove/hole to receive and guide the dirty oil into the filter assembly, including where the plug groove/hole is configured to pass completely through the plug housing.

5. A bearing housing assembly according to claim 4, wherein the filter i o assembly comprises a filter or filter cartridge coupled to a bottom end of the plug housing and configured to filter the dirty oil and provide filtered oil to the oil sump, including where the filter cartridge includes a pleated filtering material arranged in a cartridge mounting assembly.

15 6. A bearing housing assembly according to claim 5, wherein the filter

assembly comprises a filter indicator stem, a filter indicator configured on the filter indicator stem, and an internal retainer ring configured to flex inwardly and outwardly for retaining the filter indicator stem and the filter indicator within the plug housing, the filter indicator combination configured to pass the dirty oil received in the plug

20 groove/hole and provide the dirty oil to the filter cartridge.

7. A bearing housing assembly according to claim 6, wherein the plug housing comprises a lower plug housing inner wall having a lower annular channel configured or formed therein;

the filter indicator comprises a top portion and a bottom hollow portion, the top portion including, or being formed in part by, indicator paper for indicating the quality of the oil;

the filter indicator stem comprises a base portion and a stem portion, the base portion configured with holes formed therein to pass the dirty oil to the filter assembly, the stem portion configured to receive the bottom hollow portion of the filter indicator; and

the internal retainer ring is configured to flex and fit into the lower annular channel and retain the filter indicator combination in the lower plug housing inner wall.

8. A bearing housing assembly according to claim 5, wherein the filter cartridge is a replaceable filter cartridge, including where the cartridge mounting assembly has threads that couple to corresponding threads of the bottom end of the plug housing.

9. A bearing housing assembly according to claim 5, wherein

the filter cartridge is configured or formed with a filter cavity; and

the filter cartridge comprises moisture absorbing beads or crystals that reside in the filter cavity.

10. A bearing housing assembly according to claim 2, wherein the filter assembly comprises a glass window, an O-ring and a glass retainer configured to flex inwardly and outwardly; and

the plug housing includes an upper plug housing inner wall having an upper annular portion configured or formed therein to receive the O-ring and the glass retainer by flexing and fitting the glass retainer into the upper annular portion, and the glass window being arranged and sealed between the O-ring, the glass retainer and the upper annular portion.

1 1 . A bearing housing assembly according to claim 1 , wherein the bearing housing assembly comprises a plurality of filter assemblies, each filter assembly configured to mount in a respective filter assembly cavity configured or formed in the bearing housing, couple to a respective filter assembly wall portion configured or formed in the bearing housing, receive respective dirty oil traveling down respective oil path channels configured or formed in the bearing housing, filter the respective dirty oil and provide respective filtered oil to the oil sump, so that the filtered oil can be recirculated to lubricate the bearing assembly when the shaft is rotated.

12. A bearing housing assembly according to claim 1 , wherein the bearing housing wall portion includes an oil ring channel or groove configured or formed therein; and

the bearing housing assembly includes an oil ring arranged in the oil ring channel or groove configured to fling, provide or guide oil into the oil path channel.

13. A bearing housing assembly according to claim 1 , wherein the filter assembly comprises an upper O-ring and a lower O-ring for proving an upper and lower seal between the filter assembly and the bearing housing wall portion.

The Filter Assembly

14. A filter assembly comprising:

a plug having a plug housing with a filter assembly mounting portion configured to mount to a filter assembly wall portion of a bearing housing for arranging the filter assembly in a filter assembly cavity of the bearing housing, the plug housing configured with a plug/groove formed therein for receiving and guiding dirty oil provided from a bearing assembly chamber having a bearing assembly and a shaft to be rotated, to an oil path channel of the bearing housing for traveling down an oil path;

a filter indicator combination arranged in the plug housing to receive the dirty oil from in the plug groove/hole and configured with holes formed therein to provide the dirty oil to a bottom end of the plug housing; and

a filter coupled to the bottom end of the plug housing and configured to receive the dirty oil provided from the filter indicator combination, filter the dirty oil and provide filtered oil to an oil sump of the bearing housing, so the filtered oil can be recirculated to lubricate the bearing assembly when the shaft is rotated.

15. A filter assembly according to claim 14, wherein the filter assembly mounting portion comprises threads for coupling to corresponding threads of the filter assembly wall portion of the bearing housing.

16. A filter assembly according to claim 14, wherein the plug groove/hole is configured to pass completely through the plug housing.

17. A filter assembly according to claim 16, wherein the filter includes, or takes the form of, a filter cartridge having a pleated filtering material arranged in cartridge mounting assembly.

18. A filter assembly according to claim 16, wherein the filter indicator combination comprises a filter indicator stem, a filter indicator configured on the filter indicator stem, and an internal retainer ring configured to flex inwardly and outwardly for retaining the filter indicator stem and the filter indicator within the plug housing.

19. A filter assembly according to claim 18, wherein

the plug housing comprises a lower plug housing inner wall having a lower annular channel configured or formed therein;

the filter indicator comprises a top portion and a bottom hollow portion, the top portion including, or being formed in part by, indicator paper for indicating the quality of the oil;

the filter indicator stem comprises a base portion and a stem portion, the base portion configured with holes formed therein to pass the dirty oil to the filter

assembly, the stem portion configured to receive the bottom hollow portion of the filter indicator; and

the internal retainer ring is configured to flex and fit into the lower annular channel and retain the filter indicator combination in the lower plug housing inner wall.

20. A filter assembly according to claim 17, wherein the filter cartridge is a replaceable filter cartridge, including where the cartridge mounting assembly has threads that couple to corresponding threads of the bottom end of the plug housing.

21 . A filter assembly according to claim 17, wherein

the filter cartridge is configured or formed with a filter cavity; and

the filter cartridge comprises moisture absorbing beads or crystals that reside in the filter cavity.

22. A filter assembly according to claim 14, wherein

the filter assembly comprises a glass window, an O-ring and a glass retainer configured to flex inwardly and outwardly; and

the plug housing includes an upper plug housing inner wall having an upper annular portion configured or formed therein to receive the O-ring and the glass retainer by flexing and fitting the glass retainer into the upper annular portion, and the glass window being arranged and sealed between the O-ring, the glass retainer and the upper annular portion.

The Bearing Housing

23. A bearing housing for a bearing housing assembly, comprising:

a bearing housing wall portion configured to form a bearing assembly chamber for receiving a combination of a bearing assembly and a shaft to be rotated; an oil sump configured or formed within the bearing housing for receiving and containing oil for lubricating the bearing assembly when the shaft is rotated;

an oil path channel configured or formed within the bearing housing as an oil path to receive dirty oil from the bearing assembly chamber for traveling down the oil path; and

a filter assembly wall portion configured to form a filter assembly cavity that is coupled fluidically between the oil sump and the oil path channel and also configured to receive a filter assembly for filtering the dirty oil traveling along the oil path and providing filter oil to the oil sump, so the filtered oil can be recirculated to lubricate the bearing assembly when the shaft is rotated.

24. A bearing housing according to claim 23, wherein the filter assembly wall portion includes threads for coupling to corresponding threads of a filter assembly mounting portion of the filter assembly.

25. A bearing housing according to claim 23, wherein

the bearing housing wall portion includes an oil ring channel or groove configured or formed therein; and

the bearing housing includes an oil ring arranged in the oil ring channel or groove configured to fling, provide or guide the dirty oil from the bearing assembly chamber to the oil path channel.