Oil filter/liquid indicator assembly

Abstract

A bearing housing assembly featuring a bearing housing having a bearing housing wall portion with a bearing assembly chamber for receiving a bearing assembly and a shaft to be rotated, an oil sump for receiving and containing oil for lubricating the bearing assembly when the shaft is rotated, an oil path channel formed 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 forming a filter assembly cavity coupled fluidically between the oil sump and the oil path channel; and a filter assembly arranged in the filter assembly cavity, to 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.

Claims

1. A housing assembly comprising: a housing comprising a first bearing housing wall portion that defines a chamber formed therein, wherein the chamber is configured to receive a combination of a bearing assembly and a shaft to be rotated, a filter assembly wall portion that defines a filter cavity formed therein, wherein the filter assembly wall portion is distinct from the first bearing housing wall portion such that the filter cavity is distinct from the chamber, a second bearing housing wall portion that defines a channel formed therein such that the channel is fluidically coupled between the chamber and the filter cavity effective to allow dirty oil to flow from the chamber to the filter cavity via the channel, and a third bearing housing wall portion that defines an oil sump formed therein, wherein the third bearing housing wall portion is distinct from the filter assembly wall portion such that the oil sump is distinct from the filter cavity, the oil sump is fluidically coupled to the chamber and the filter cavity, and the oil sump is configured to receive and contain filtered oil from the filter cavity effective to lubricate the bearing assembly when the shaft is rotated; and a filter assembly configured to mount in the filter cavity, receive the dirty oil from the channel, filter the dirty oil, and provide the filtered oil to the oil sump, such that the filtered oil is recirculated effective to lubricate the bearing assembly when the shaft is rotated.

2. The housing assembly according to claim 1, wherein the filter assembly comprises a plug with a filter assembly mounting portion configured to couple to the housing.

3. The housing assembly according to claim 2, wherein the filter assembly mounting portion and the housing are coupled together through a threaded coupling arrangement, and the filter assembly mounting portion includes threads configured to couple into corresponding threads of the housing.

4. The housing assembly according to claim 2, wherein the plug further comprises a plug housing configured with a plug groove/hole to receive and guide the dirty oil into the filter assembly, and the plug groove/hole is configured to pass completely through the plug housing.

5. The housing assembly according to claim 2, wherein the filter assembly comprises a filter or a filter cartridge configured to filter the dirty oil and provide the filtered oil to the oil sump, and the filter cartridge includes a pleated filtering material arranged in a cartridge mounting assembly.

6. The 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 to retain the filter indicator stem and the filter indicator within the plug housing, the filter indicator and the filter indicator stem configured to provide the dirty oil received in the plug to a filter cartridge.

7. The housing assembly according to claim 2, wherein the plug further comprises a plug housing comprising a lower plug housing inner wall with a lower annular channel formed therein; the filter comprises a filter indicator comprising a top portion and a bottom hollow portion, the top portion including, or being formed in part by, an indicator paper to indicate a quality of the received dirty oil; the filter further comprises a filter indicator stem comprising 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 filter further comprises internal retainer ring configured to flex and fit into the lower annular channel and retain the filter indicator combination in a lower plug housing inner wall.

8. The housing assembly according to claim 2, wherein the filter assembly comprises a replaceable filter cartridge and a cartridge mounting assembly that includes threads configured to couple to corresponding threads of a bottom end of a plug housing of the plug.

9. The housing assembly according to claim 1, wherein the filter assembly comprises a filter cartridge formed within the filter cavity; and the filter cartridge comprises moisture absorbing beads or crystals that reside in the filter cavity.

10. The bearing housing assembly according to claim 1, wherein the filter assembly comprises a glass window, an O-ring and a glass retainer configured to flex inwardly and outwardly, a plug housing that includes an upper plug housing inner wall with an upper annular portion configured 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 is arranged and sealed between the O-ring, the glass retainer and the upper annular portion.

11. The housing assembly according to claim 1, further comprising: a plurality of filter assemblies and a plurality of channels, each filter assembly configured to mount in a respective filter assembly cavity formed in the housing distinct from the oil sump, couple to a respective portion of the housing, receive respective dirty oil from respective channels formed in the housing, filter the received respective dirty oil, and provide respective filtered oil to the oil sump, such that the filtered oil is recirculated effective to lubricate the bearing assembly when the shaft is rotated.

12. The housing assembly according to claim 1, further comprising: a fourth bearing housing wall that includes an oil ring channel or groove formed therein; and the housing assembly includes an oil ring arranged in the oil ring channel or groove configured to fling, provide, or guide oil into the channel.

13. The housing assembly according to claim 1, wherein the filter assembly comprises an upper O-ring and a lower O-ring to provide an upper and lower seal between the filter assembly and the housing.

14. An pump assembly comprising: a bearing assembly comprising: a housing comprising a first housing wall portion that defines a chamber formed therein, wherein the chamber is configured to receive a combination of a bearing assembly and a shaft, a filter assembly wall portion that defines a filter cavity formed therein, wherein the filter cavity is formed distinctly from the chamber, a second housing wall portion that defines a channel formed therein, wherein the channel is fluidically coupled between the chamber and the filter cavity effective to allow dirty oil to flow from the chamber to the filter cavity via the channel, and a third housing wall portion that defines an oil sump formed therein, wherein the oil sump is formed distinctly from the filter cavity, the oil sump is fluidically coupled to the chamber and the filter cavity, and the oil sump is configured to receive and contain filtered oil from the filter cavity effective to lubricate the bearing assembly in the chamber when the shaft is rotated; and a filter assembly mounted in the filter cavity, wherein the filter assembly is configured to: filter the dirty oil received from the channel, and provide the filtered oil to the oil sump to be recirculated to the chamber; and a pump configured to pump a liquid from the bearing assembly.

15. The apparatus according to claim 14, wherein the at least one filter assembly comprises a mounting portion configured to be coupled to a portion of the housing through a threaded coupling arrangement.

16. The apparatus according to claim 14, wherein the at least one filter assembly further comprises at least one plug, each of the at least one plug comprising a plug housing configured with a plug groove/hole to receive and guide the dirty oil into the filter assembly.

17. The apparatus according to claim 14, wherein the at least one filter assembly further comprises at least one replaceable filter cartridge configured to filter the dirty oil and provide the filtered oil to the oil sump.

18. The apparatus according to claim 14, wherein the at least one filter assembly further comprises at least one filter cartridge configured to filter the dirty oil and provide the filtered oil to the oil sump, and each of the at least one filter cartridge includes a pleated filtering material arranged in a cartridge mounting assembly.

19. The apparatus according to claim 14, wherein the at least one filter assembly further comprises at least one filter cartridge configured to filter the dirty oil and provide the filtered oil to the oil sump, and each of the at least one filter cartridge comprises moisture absorbing beads or crystals that reside in the filter cavity.

Description

BRIEF DESCRIPTION OF THE DRAWING

(1) The drawing, not necessarily drawn to scale, includes the following Figures:

(2) FIG. 1A is an illustration of a front view in cross-section (in a plane perpendicular to a longitudinal axis (front to back into the page)) of a shaft and bearing assembly combination) of a bearing housing assembly having one or more filter assemblies arranged in a bearing housing, according to some embodiments of the present invention.

(3) FIG. 1B is an illustration of a back perspective view in cross-section (in a plane parallel to the longitudinal axis (front to back into the page)) of a shaft and bearing assembly combination) of part of a bearing housing assembly having one or more filter assemblies arranged in a bearing housing, according to some embodiments of the present invention.

(4) FIG. 2A is an illustration of a perspective view in cross-section (in a plane parallel to the longitudinal axis (top to bottom of the page)) of a filter assembly, according to some embodiments of the present invention.

(5) FIG. 2B is a photograph of a filter assembly and a plug P for using when the filter assembly is not being used, according to some embodiments of the present invention.

(6) FIG. 2C is an exploded view of a filter assembly, according to some embodiments of the present invention.

(7) FIG. 2D is a side view of a filter assembly as assembled (in a plane parallel to the longitudinal axis (top to bottom of the page)), according to some embodiments of the present invention.

(8) FIG. 2E is a cross-section view of the filter assembly in FIG. 2D along cross-section lines 2D-2D, according to some embodiments of the present invention.

(9) FIG. 2F is an exploded view of part of the filter assembly in FIG. 2E labeled as 2F, according to some embodiments of the present invention.

(10) FIG. 3 includes FIGS. 3A and 3B, where FIG. 3A shows a side view of a plug that forms part of the filter assembly, and where FIG. 3B shows a cross-sectional view of the plug in FIG. 3A along cross-section lines 3B-3B, according to some embodiments of the present invention.

(11) Not every reference numeral is included in every Figure, e.g., so as to reduce clutter in the drawing as a whole.

DETAILED DESCRIPTION OF THE INVENTION

(12) FIGS. 1A and 1B show a bearing housing assembly generally indicated as 10 having a bearing housing 12 and a filter assembly 14, according to some embodiments of the present invention. In FIG. 1A, reference arrow no. 1 indicates that sump oil flows through the filter assembly 14; reference arrow no. 2 indicates the sump oil enters the filter assembly 14; and reference arrow no. 3 indicates that filtered oil enters the oil sump from the filter assembly 14.

(13) The bearing housing 10 may include a bearing housing wall portion 10a with a bearing assembly chamber 10a configured or formed therein for receiving a combination of a bearing assembly generally indicated by BA and a shaft S to be rotated. The combination of the bearing assembly BA and shaft S is generally known in the art, e.g., and may include ball bearings, rings, inner and outer ball bearing sleeves, as one skilled in the art would appreciate. The bearing housing wall portion 10a with the bearing assembly chamber 10a may be configured or formed to receive and contain the combination of the bearing assembly BA and shaft S, e.g., consistent with that disclosed herein.

(14) The bearing housing 10 may include an oil sump generally indicated as 10b configured or formed therein for receiving and containing oil for lubricating the bearing assembly BA when the shaft S is rotated. By way of example, the oil sump 10b may configured in the lower part of the bearing housing 12, as shown in FIG. 1A.

(15) The bearing housing 10 may include an oil path channel 10c configured or formed therein as an oil path for receiving dirty oil from the bearing assembly chamber 10a for traveling down the oil path. (By way of example, the dirty oil may travel down the oil path via a gravity feed, or alternative by oil pressure caused by the combination of the bearing assembly BA and the rotating shaft S.)

(16) The bearing housing 10 may include a filter assembly wall portion 10d configured to form a filter assembly cavity generally indicated as 10d that is coupled fluidically between the oil sump 10b and the oil path channel 10c.

(17) The filter assembly 14 may be configured to mount in the filter assembly cavity 10d, e.g., as shown in FIG. 1A, couple to the filter assembly wall portion 10d, receive the dirty oil traveling down the oil path, filter the dirty oil and provide filtered oil to the oil sump 10b via an oil sump port/channel 10b, so the filtered oil can be recirculated to lubricate the bearing assembly BA when the shaft S is rotated. By way of example, an oil pump (not shown) may be configured to pump oil from the oil sump 10b to the bearing assembly chamber 10a, e.g., via one or more oil recirculation channels, conduits or ports configured or formed in the bearing housing 12.

(18) As shown in FIGS. 2A thru 2F, the filter assembly 14 may include a plug 14a having a filter assembly mounting portion 14a configured to couple to the filter assembly wall portion 12a of the bearing housing 12. In particular, see FIG. 2B. By way of example, the filter assembly mounting portion 14a and the filter assembly wall portion 12a may be coupled together using a threaded coupling arrangement, including where the filter assembly mounting portion 14a has threads 14a that couple into corresponding threads 12a (FIG. 1A) of the filter assembly wall portion 12a of the bearing housing 12.

(19) As shown in FIG. 2A thru 2C, the plug 14a may include a plug housing 14c configured with a plug groove/hole 14d to receive and guide the dirty oil into the filter assembly 14, including where the plug groove/hole 14d is configured to pass completely through the plug housing 14c, as shown. See also FIG. 1A.

(20) As shown in FIG. 2A thru 2C, the filter assembly 14 may include a filter or filter cartridge 14e coupled to a bottom end 14c1 of the plug housing 14c and configured to filter the dirty oil and provide filtered oil to the oil sump 10b, including where the filter cartridge 14e includes a pleated filtering material 14e arranged in a cartridge mounting assembly 14e.

(21) The filter assembly 14 may include a filter indicator combination having a filter indicator stem 14f, a filter indicator 14g configured on the filter indicator stem 14f, and an internal retainer ring 14h configured to flex inwardly and outwardly for retaining the filter indicator stem 14f and the filter indicator 14g within the plug housing 14c, as described below. The filter indicator combination may be configured to pass the dirty oil received in the plug groove/hole 14d and provide the dirty oil to the filter or filter cartridge 14e.

(22) As best shown in FIG. 2F, the plug housing 14c may include a lower plug housing inner wall 14c2 having a lower annular channel 14c2 configured or formed therein. The filter indicator 14g may include a top portion 14g and a bottom hollow portion 14g, the top portion 14g including, or being formed in part by, indicator paper or indicating the quality of the oil. The filter indicator stem 14f may include a base portion 14f1 and a stem portion 14f2, the base portion 14f1 may be configured with holes, openings, apertures or slots 14f1 formed therein to pass the dirty oil to the filter cartridge 14e, the stem portion 14f2 may be configured to receive the bottom hollow portion 14g of the filter indicator 14g. The internal retainer ring 14h may be configured to flex and fit into the lower annular channel 14c2 and retain the filter indicator combination in the lower plug housing inner wall 14c2.

(23) The filter cartridge may be, or take the form of, a replaceable filter cartridge, including where the cartridge mounting assembly 14e has threads that couple to corresponding threads of the bottom end 14c1 of the plug housing 14c.

(24) The filter cartridge 14e may be configured or formed with a filter cavity 14e; and the filter cartridge 14e may include moisture absorbing beads or crystals B that reside in the filter cavity 14e.

(25) The filter assembly 14 may include a glass window 14i, an O-ring 14j and a glass retainer 14k configured to flex inwardly and outwardly. The plug housing 14c may include an upper plug housing inner wall 14c4 having an annular portion 14c4 and ledge 14c4 configured or formed therein to receive the O-ring 14j and the glass retainer 14k by flexing and fitting the glass retainer 14k. The glass window 14i may be arranged and sealed between the O-ring 14j, the glass retainer 14k and the upper annular portion 14c4.

(26) As shown in FIG. 1A, the bearing housing wall portion 12a may include an oil ring channel or groove 12a configured or formed therein. The bearing housing assembly 10 may include an oil ring R arranged in the oil ring channel or groove 12a configured to fling, provide or guide oil into the oil path channel 12c.

(27) The filter assembly 14 may include an upper O-ring O1 and a lower O-ring O2 for providing an upper and lower seal between the filter assembly 14 and the bearing housing wall portion 10a, as shown in FIGS. 1A and 2A thru 2E. By way of example, the lower O-ring O2 may be configured in an O-ring channel 14c5 formed in the plug housing 14c, as shown in FIG. 3B.

THE SCOPE OF THE INVENTION

(28) It should be understood that, unless stated otherwise herein, any of the features, characteristics, alternatives or modifications described regarding a particular embodiment herein may also be applied, used, or incorporated with any other embodiment described herein. Also, the drawing herein is not drawn to scale.

(29) Although the invention has been described and illustrated with respect to exemplary embodiments thereof, the foregoing and various other additions and omissions may be made therein and thereto without departing from the spirit and scope of the present invention.