CA2015240C - Cover element for a bearing - Google Patents
Cover element for a bearingInfo
- Publication number
- CA2015240C CA2015240C CA 2015240 CA2015240A CA2015240C CA 2015240 C CA2015240 C CA 2015240C CA 2015240 CA2015240 CA 2015240 CA 2015240 A CA2015240 A CA 2015240A CA 2015240 C CA2015240 C CA 2015240C
- Authority
- CA
- Canada
- Prior art keywords
- bearing
- shaft
- cover
- opening
- slit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000004519 grease Substances 0.000 claims abstract description 3
- 239000004743 Polypropylene Substances 0.000 claims abstract 4
- -1 polypropylene Polymers 0.000 claims abstract 4
- 229920001155 polypropylene Polymers 0.000 claims abstract 4
- 239000000463 material Substances 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 239000004033 plastic Substances 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 239000002991 molded plastic Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 229920002457 flexible plastic Polymers 0.000 claims 1
- 239000000314 lubricant Substances 0.000 claims 1
- 239000000356 contaminant Substances 0.000 description 6
- SCJNCDSAIRBRIA-DOFZRALJSA-N arachidonyl-2'-chloroethylamide Chemical compound CCCCC\C=C/C\C=C/C\C=C/C\C=C/CCCC(=O)NCCCl SCJNCDSAIRBRIA-DOFZRALJSA-N 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- PBAYDYUZOSNJGU-UHFFFAOYSA-N chelidonic acid Natural products OC(=O)C1=CC(=O)C=C(C(O)=O)O1 PBAYDYUZOSNJGU-UHFFFAOYSA-N 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 125000000446 sulfanediyl group Chemical group *S* 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding-Contact Bearings (AREA)
- Auxiliary Devices For Machine Tools (AREA)
- Mounting Of Bearings Or Others (AREA)
- Rolling Contact Bearings (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
COVER ELEMENT FOR A BEARING
Bearings of the pillow block type ace protected by a cover which extends over the pillow block and is shaped to substantially follow the contour of the pillow block and includes a slit from a lower edge of the device to an opening for allowing the shaft to pass into the cover to the opening.
The cover is formed from polypropylene which is highly flexible and resistant to impact damage. Grease can be inserted into a recess or clearance between the end face of the bearing and the inside surface of the cover. In an alternative arrangement, the cover can be formed in two parts to be clamped on respective sides of plates supporting the bearing. Again there is provided a slit and a central opening to be inserted over the shaft.
COVER ELEMENT FOR A BEARING
Bearings of the pillow block type ace protected by a cover which extends over the pillow block and is shaped to substantially follow the contour of the pillow block and includes a slit from a lower edge of the device to an opening for allowing the shaft to pass into the cover to the opening.
The cover is formed from polypropylene which is highly flexible and resistant to impact damage. Grease can be inserted into a recess or clearance between the end face of the bearing and the inside surface of the cover. In an alternative arrangement, the cover can be formed in two parts to be clamped on respective sides of plates supporting the bearing. Again there is provided a slit and a central opening to be inserted over the shaft.
Description
201~240 .. . .
COVER ELEMENT FOR A BEARING
BACKGROUND OF THE_INVENTION
This invention celates to a covec element for a beacing of the type which includes an innec beacing element for engaging a ~otatable shaft, an outec bearing element for mounting on a suitable support and beacing mean_ generally in the focm of ballq mounted in an annulac chambec between the innec and outer elements to allow fciction fcee cotation.
.
Genecally beacings of this type ace filled with gcease and ace then sealed by an end plate which iq fixed to one of the elements 90 as to bcidge the end face of the annulac chambec. Bearings of thi~ type are of coucse ve~y widely u~s~ed in various applications and are oftén u_ed in acea~ which ace open to high levels of contamination fcom duqt and other pacticulate contaminant3.
Beacings of this type have a celatively high rate of failure often due to the entcy of the contaminants into the beacing itself where the contaminants inccease friction and cause wear eventually leading to a breakdown of the pacts and often seizure. While clo~e attention has been given to the structuce of the bearing seals, a secious problem cemains which leads to cegular ceplacement of the beacings at celatively high cost. ~
qp.~
20152~0 One problem which arises with beacings of this type is that the heating and cooling of the beacing which occuc ~-during peciods of uqe and periods of standing can cause gcease to be pumped out of the bearing and then back into the beacing -as it c0019 with the gcease returning to the beacing tending to caccy contaminant~ into the beacing which collect on the exterior of the bearing. - ~`
8eacings of this type can be u~ed in the following different applications; -`
- vacious conveying systems; ~-:
- drilling rigs, pump jackets and offshore equipment;
- liting and conveying equipment;
- mining equipment;
- ventilatocs;
- motoc vehicles (dcive axles); ~.
- agcicultucal machinery; .
- vibcating scceen~ and vibcatoc~
- ocest industcy;
- tunnelling machines;
- hydraulic components;
- textile machinery;
- housing and bearing units;
- equipment or beacing mounting and di~mounting;
.,: ' , .
. :' ,' ,' ' ~ .':-; '::
~ 3 ~ 2 0 152 40 - pressure forming of metal components;
- aviation;
- rail vehicles; -- paper making machinery and calendars;
- steel work and rolling mill equipment. -SUMMARY OF THE INVENTION .-., It i~ one object of the present invention, therefore to provide an improved bearing and cover combination which eanbles an improved protection of the bearing and significantly increased life.
It is a further object of the present invention to provide a i3pecific design of cover element which can be used in relation to pillow blocks.
It is, a yet further object of the present invention tp provide a specific de~ign of cover which can be used with bearings of the type clamped between two support plates.
According to the first aspect of the invention there is provided a bearing and cover combination comprising a shaft, a support member, a bearing comprising an inner bearing element mounted on the shaft for rotation therewith, an outer bearing element having an outer peripheral surface and defining an annular chamber between the inner and outer bearing elements and having end faces of the chamber at axially facing end faces of the bearing, and bearing means mounted in the chamber for supporting the inner element relative to the outer element for rotation relative thereto, , ~
~ A ;:~
. r, ~ : ~
_ 4 _ 201~240 means mounting the outer bearing element in fixed position on the support element for rotation of the shaft relative to the support element and sealing means fully enclosing and substantially sealing the bearing from exposure to the environment, said sealing mean~ including a cover element for the bearing comprising an integrally molded plastics body defining at least an end wall portion covering one of said end faces of said bearing and a peripheral wall portion covering the outer peripheral surface of the outer element, said cover element having means thereon engaging the support element to hold said cover element on said bearing.
According to the second aspect of the invention there is provided a cover member for a pillow block bearing arrangement comprising an integrally molded plastic~ body defining a part cylindrical upper wall surrounding an axis of the bearing, a pair of parallel side faces at right angle~ to the axis, each side face having an opening therein concentric to the axis for receiving a shaft of the bearing arrangement, a pair of end wall~ spaced outwardly from the part cylindrical wall in a direction at right angles to the axis~
with each end wall lying in a plane paraIlel to the axis, a pair of upper wall portions each extending from the part cylindrcial wall to . :' .: : ' : ,',. ~' 2~2~0 , a cespective one of the end walls, an undec~ide of the covec element being open to expoQe a hollow intecioc theceof foc pressing ovec the pillow block beacing aceangement and means defining a paic of cuts each extending fcom the undecside to a cespective one of the openings.
Accocding to a third aspect of the invention there is pcovided a covec membec for a bearing assembly of the type compcising a ficst plate membec and a ~econd plate membec clamped togethec in substantially parallel contacting celationship 90 as to engage an outec beacing membec thecebetween in a cecess thecein succounding a haft, the covec membec compcising a ficst poction mounted on one side of one of the plate membecs and a second portion mounted on one side of the othec of the plate membecs 90 as to clamp the plate membecs therebetween, each of the poctions being focmed of a cesilient plastics material having a cece~s thecein fo~ engaging ovec the beacing a ficst opening at a base of the cecess for succounding the shaft, a cut extending fcom the first opening to one outside edge of the poction, and a plucality of second openings therethcough at spaced positions succounding said ficst opening for ~eceiving fastenecs therein, each second opening having a cigid in~ect the~ein oc communication of focce in a dicection pacallel to the opening to clamp said plate membecs togethec.
,'~:~ `';' ' ,, ., ~ ,... .
2~52~0 With the foeegoing in view, and other advantages as will become apparent to those skilled in the art to which this invention relates as this specification pcoceed~, the invention i~i herein described by reference to the accompanying drawings forming a part hereof, which includes a description of the best mode known to the applicant and of the peeferced typical embodiment of the principles of the present invention, in which:
DESCRIPTION OF THE DRAWINGS
Eigure 1 is an isometric view of a covec for a pillow block bearing construction according to the present invention.
Figure 2 is a front elevational view of the cover of Figure 1.
Figure 3 is an underside view of the covec of Figure 1.
Figure 4 i9i a ccoss-sectional view along the lines 4-4 of Figure 2 showing also the pillow block bearing . .:
construction.
: : .
Figuee 5 is a cross-secitonal view along the lines 5-5 of Figure 3 again showing in additionally bearing con4truction. ;
Figure 6 is a front elevational view of one part ~' ' "
: , - . ' .~
j,.:,....
. .
..:: .
201~2A0 of a ~econd con~truction of cover.
Figure 7 is an isometric view of the covec of Figure 6.
Figure 8 i9 a rear elevational view of the cover of Figure 6.
Figure 9 i~ a cros3 sectional view along the lines 9-9 of Figure 8 ~howing an additional bearing constcuction .
In the drawing like character~ of reference indicate corresponding parts in the different figures.
DETAILED DESCRIPTION
A pillow block bearing is indicated in Figure 5 generally at 10 and comprises a shaft 11 which i9 mounted for rotation relative to a support plate 12. The 3haft 11 cacries an inner bearing element 13 which is rotatable with the shaft.
An outer bearing element 14 is carried in a pillow block e}ement 15 which has an upper wall portion at least partly 3urcounding the outer bearing element and a pair of flange~ 16 and 17 which pcoject outwardly from an annular support po~tion 18.
Mounted between the innec and outer bearing elementJ is provided a plurality of balls 19 and foc convenience of illustcation the cage which supports the balls ~, ,, ,' .~ , .
is omitted. The balls of course pcovide a ~ubAtantially friction free cotation of the innec eace oc beacing element celative to the outec race thus allowing the ~haft 11 to cotate celative to the suppoct plate 12. Between the innec and outec bearing elements i~ provided a channel which is annular in ~hape and which pcovides the acea foc receiving the balls 19.
The channel breaks out in eithec end of the beacing and is coveced by a beacing seal 20 which i~ attached to eithec the innec oc the outer beacing element ~o as to cotate celative to the othec. The beacing seal is designed to retain the grea e within the beacing and to pcevent the entcy of contamination -into the beacing. --- -~
The above descciption of the pillow block and -~
beacing as~embly i3 of a conventional natuce and very many examples of devices of thi~ type are available and well used.
Accocding to the invention thece iA pcovided a covec membec shown in most detail in Figuces 1, 2 and 3 but ~-also it i9 shown mounted in place in Figuces 4 and 5.
The covec member comprises a pair of aide walls ;
25 and 26, a pair of end walls 27 and 28 and a covecing wall 29. The covering wall defines a part cylindrical portion 30 --which is arcanged to extend over the upper part of the pillow -~
block and ha~ a curvature following the cucvature of the outec ' ' '~ -:' ' ,'.," ' ' '-:
'' ':""'.:"
-- 20152~0 isurface of the pillow block. On either side of the cylindrical portion 30 is provided a paic of outwardly extending surfaces 31 and 32 which are inclined downwardly and outwardly from a lower edge of the cylindrical portion 30 to the top edge of the -end wall 27, 28 respectively. As shown in Figure 2 the side wall in elevation haq a shape so that it matchei3 the edge of the uppee wall. ~ach of the side walls has an opening 34 provided thecein of a size to receive the i~qhaft 11 with a slight clearance between the outer sueface of the i~qhaft and the edge of the opening 34. -As shown in Figure 3, the side walls 25 and 26 and the upper wall 29 are thin relative to the iqize of the cover member 90 as to form a hollow interioc which can engage -~
over the pillow block.
A3 best shown in Figure 3 and 4, the side wall 25 and 26 includes a step 35 90 as to form a thinner portion aligned with the bearing thus defining a recess or clearance betwen the outec face of the bearing and the inner surface of the wall 25,26 respectively. Each of the side walls includes a 91it 36 extending fcom the undecside of the opening 34 directly downwaedly to the bottom edge of the side wall. The slit is focmed by hot-cutting through the body of the cover 90 as to focm a slit without removal of any significant amount of -- ., ~, ; ~
`- 201~240 material 90 that in a celaxed condition of the covec the slit i9 closed. Fucthecmoce the slit is cut in a dicection pacallel to the axi~ 90 that the side3 of the slit as best shown in Figure 3 lie dicectly acros~ the thicknes of the wall at cight angles to the qucface of the wall. The slit thUC lies in an axial plane. ~
The cover is focmed fcom polypcopylene of high --flexibility so that it can be twisted and defocmed fcom the ~ :
cest condition shown in the drawings to a distocted condition in which the slit i_ fully opened by twisting of the ~ide wall -:-to allow the slit to pas~ ovec the shaft until the shaft enter3 .
the opening 34.
Pcolypropylene of this type has a vecy high - -~
degcee of flexibility and impact cesistance even at .~:~
tempecatuces down to -50 degcees C. The matecial includes a Uv inhibitocs which pcevent damage due to sunlight action on the pla~tics material.
As best shown in Figure 4, the flanges 16 and 17 . - ~-often caccy caised lettecing 37 on the side sucfaces. The step :~
35 allows the inside sucface of the wall 25 and 26 at the -.
position aligned with the flanges 16 and 17 to engage the side -~
:
sucfaces of flanges in a pcess-fit oc fciction fit thus tending to hold the lowec edge of the side wallq down into contact with . ' ' ~ .'': ., '.
~ '.. '".'.. ~' ;
- ~ ',',"'.~ ,'' :' 201~24~
the plate 12. This action of the pcess fit onto the sides of the flanges also tends to close the slit 36.
~ efoce attachment into place on top of the conventional pillow block, the covec can have a suitable amount of gcease applied into the intecioc of the covec 90 that the acea between the side~ of the bearing and the inside of the side walls 25 and 26 i9 pceferably substantially filled with the grease.
The cover thus act~ to pcotect the bearing fcom impact, moii3tuce, dust and othec contaminant~ and sunlight which can othecwise cause significant degeadation of the bea~ing, the shaft and the suppocting elements~
In an altecnative accangement (not shown) the covec can be pcovided with a filling nipple of conventional type for insection of gcease on a coutine maintenance basis.
In a furthec altecnative (not shown) the simple opening 34 can be incceased in i3ize and pcovided with an insect seal accangement separate com the cove~ and caccied by the covec 90 as to engage the shaft and pcevent moce effectively the escape of greai3e and the entry of contaminants.
The cleacance between the side walls 25 and 26 and the adjacent end face of the bearing iis pceferably at least 1/16th inch which is sufficient to ceceive a sufficient amount - .:
':
`- 2015240 of gcease to pcevent the expansion and contraction causing the pumping of contaminants into the cover and subsequently into the beacing.
Tucning now to Figures 6 thcough 9 thece is shown an alternative con~tcuction of beacing of the type in which a shaft 40 is mounted for cotation and carcied cela~ive to a paic of plates 41 and 42 with an opening thecein thcough which the shaft 40 passes. In this ca~e each of the plates is deformed to form a cup poction 43, 44 for the outec race ~5 of a bearing assembly 46. The beacing assembly include~ an inner race 47 and balls 48. The inner race 47 is attached to the shaft 40 foc rotation therewith. The outer race 45 is cacried in the cup shaped element defined by the defamation of the plates 41 and 42. A bearing arrangement of this type is well known and is used in many locations on many different types of machine.
In this case the covec arcangement is formed in two parts each of which is substantially of the shape ~hown in Figures 6, 7 and 8. In thio case the outer shape of the device i8 substantially triangular with the apexes 50 chamfeced thus forming an irregular hexagon. At aach of the apexes is drilled an opening 51 extending axially of the covec pact. The opening receiYe3 a metal sleeve 52 foc reinforcement of the pact and extending thcough the full thickness of the part. Centcally of ,::
-`- 201524~
the part is formed a countec bore 53 of an outside diameter substantially equal to the outside of the cup defined in the plates 41 and 42. An opening 54 coaxial to the bore 53 extends through the end wall of the part defined by the bore 53. A~ in the pcevious embodiment, a slit 55 extends from the opening 54 through to one edge 56 of the part.
As shown in ~igure 9 the two pacts are slightly different in that one i9 thicker than the other thus defining a bore 53 of one which is deeper than the bore 53A of the other pact. This arrangement accomodate~ the a~symetcy in the cup shaped elements 43 and 44 of the plate~ 41 and 42 respectively.
In opecation the conventional bolts holding togethec the plates 41 and 42 at three positions surcounding the bearing are removed and the cover parts located in po~ition by twisting of the part about the slit 55 to allow it to pass over the shaft 40. The parts are then moved into position on respective side~ of the bearing ~o that the beacing i~ cupped within the boce 53 and the bore 53A of the second part. The metal sleeves 52 then abutt up against the outer surface of the plate3 41 and 42 with the op-ning 51 aligned with the conventional opening in the plates. At this position bolts of incceased length can be in~erted through the openings 51 to clamp the covec against the plates thu~ pcoviding a compressing : ' 20~S~40 action on the plates holding the plates togethec and the bearing in place. The ~leeves prevent compcession of the plastic molded member 90 that it is prevented fcom di~torting --~
under the compre~sive action of the screw fastener.
As previously described the cover can be filled ~ - -with gcease to maintain the beaeing fully covered and --pcotected. ;
An alternative arrangement (not shown) the exterioc shape and the location of the openings 51 is modified 90 that four such openings can be provided in a body which i9 .
substantially cectangular in end elevation.
In a yet fucther embodiment (not shown) for use with bearings mounted at the end of the shaft whe~e there is no shaft projecting outwardly, the opening 54 and the slit 55 can -be omitted and the cove~ simply clamped over the end of the shaft by bolts passing through the part and into the conventional mounting arrangement of the bearing.
.... .
Since various modifications can be made in my invention as hereinabova desccibed, and many apparent}y widely different embodiments of same made within the spicit and scope of the claims without depacting fcom such spicit and scope, it - :.
i9 intended that all matter contained in the accompanying specification shall be intecpceted as illustcative only and not in a limiting sens~.
' '' ., .
' .' ' ,;.
"'..~
COVER ELEMENT FOR A BEARING
BACKGROUND OF THE_INVENTION
This invention celates to a covec element for a beacing of the type which includes an innec beacing element for engaging a ~otatable shaft, an outec bearing element for mounting on a suitable support and beacing mean_ generally in the focm of ballq mounted in an annulac chambec between the innec and outer elements to allow fciction fcee cotation.
.
Genecally beacings of this type ace filled with gcease and ace then sealed by an end plate which iq fixed to one of the elements 90 as to bcidge the end face of the annulac chambec. Bearings of thi~ type are of coucse ve~y widely u~s~ed in various applications and are oftén u_ed in acea~ which ace open to high levels of contamination fcom duqt and other pacticulate contaminant3.
Beacings of this type have a celatively high rate of failure often due to the entcy of the contaminants into the beacing itself where the contaminants inccease friction and cause wear eventually leading to a breakdown of the pacts and often seizure. While clo~e attention has been given to the structuce of the bearing seals, a secious problem cemains which leads to cegular ceplacement of the beacings at celatively high cost. ~
qp.~
20152~0 One problem which arises with beacings of this type is that the heating and cooling of the beacing which occuc ~-during peciods of uqe and periods of standing can cause gcease to be pumped out of the bearing and then back into the beacing -as it c0019 with the gcease returning to the beacing tending to caccy contaminant~ into the beacing which collect on the exterior of the bearing. - ~`
8eacings of this type can be u~ed in the following different applications; -`
- vacious conveying systems; ~-:
- drilling rigs, pump jackets and offshore equipment;
- liting and conveying equipment;
- mining equipment;
- ventilatocs;
- motoc vehicles (dcive axles); ~.
- agcicultucal machinery; .
- vibcating scceen~ and vibcatoc~
- ocest industcy;
- tunnelling machines;
- hydraulic components;
- textile machinery;
- housing and bearing units;
- equipment or beacing mounting and di~mounting;
.,: ' , .
. :' ,' ,' ' ~ .':-; '::
~ 3 ~ 2 0 152 40 - pressure forming of metal components;
- aviation;
- rail vehicles; -- paper making machinery and calendars;
- steel work and rolling mill equipment. -SUMMARY OF THE INVENTION .-., It i~ one object of the present invention, therefore to provide an improved bearing and cover combination which eanbles an improved protection of the bearing and significantly increased life.
It is a further object of the present invention to provide a i3pecific design of cover element which can be used in relation to pillow blocks.
It is, a yet further object of the present invention tp provide a specific de~ign of cover which can be used with bearings of the type clamped between two support plates.
According to the first aspect of the invention there is provided a bearing and cover combination comprising a shaft, a support member, a bearing comprising an inner bearing element mounted on the shaft for rotation therewith, an outer bearing element having an outer peripheral surface and defining an annular chamber between the inner and outer bearing elements and having end faces of the chamber at axially facing end faces of the bearing, and bearing means mounted in the chamber for supporting the inner element relative to the outer element for rotation relative thereto, , ~
~ A ;:~
. r, ~ : ~
_ 4 _ 201~240 means mounting the outer bearing element in fixed position on the support element for rotation of the shaft relative to the support element and sealing means fully enclosing and substantially sealing the bearing from exposure to the environment, said sealing mean~ including a cover element for the bearing comprising an integrally molded plastics body defining at least an end wall portion covering one of said end faces of said bearing and a peripheral wall portion covering the outer peripheral surface of the outer element, said cover element having means thereon engaging the support element to hold said cover element on said bearing.
According to the second aspect of the invention there is provided a cover member for a pillow block bearing arrangement comprising an integrally molded plastic~ body defining a part cylindrical upper wall surrounding an axis of the bearing, a pair of parallel side faces at right angle~ to the axis, each side face having an opening therein concentric to the axis for receiving a shaft of the bearing arrangement, a pair of end wall~ spaced outwardly from the part cylindrical wall in a direction at right angles to the axis~
with each end wall lying in a plane paraIlel to the axis, a pair of upper wall portions each extending from the part cylindrcial wall to . :' .: : ' : ,',. ~' 2~2~0 , a cespective one of the end walls, an undec~ide of the covec element being open to expoQe a hollow intecioc theceof foc pressing ovec the pillow block beacing aceangement and means defining a paic of cuts each extending fcom the undecside to a cespective one of the openings.
Accocding to a third aspect of the invention there is pcovided a covec membec for a bearing assembly of the type compcising a ficst plate membec and a ~econd plate membec clamped togethec in substantially parallel contacting celationship 90 as to engage an outec beacing membec thecebetween in a cecess thecein succounding a haft, the covec membec compcising a ficst poction mounted on one side of one of the plate membecs and a second portion mounted on one side of the othec of the plate membecs 90 as to clamp the plate membecs therebetween, each of the poctions being focmed of a cesilient plastics material having a cece~s thecein fo~ engaging ovec the beacing a ficst opening at a base of the cecess for succounding the shaft, a cut extending fcom the first opening to one outside edge of the poction, and a plucality of second openings therethcough at spaced positions succounding said ficst opening for ~eceiving fastenecs therein, each second opening having a cigid in~ect the~ein oc communication of focce in a dicection pacallel to the opening to clamp said plate membecs togethec.
,'~:~ `';' ' ,, ., ~ ,... .
2~52~0 With the foeegoing in view, and other advantages as will become apparent to those skilled in the art to which this invention relates as this specification pcoceed~, the invention i~i herein described by reference to the accompanying drawings forming a part hereof, which includes a description of the best mode known to the applicant and of the peeferced typical embodiment of the principles of the present invention, in which:
DESCRIPTION OF THE DRAWINGS
Eigure 1 is an isometric view of a covec for a pillow block bearing construction according to the present invention.
Figure 2 is a front elevational view of the cover of Figure 1.
Figure 3 is an underside view of the covec of Figure 1.
Figure 4 i9i a ccoss-sectional view along the lines 4-4 of Figure 2 showing also the pillow block bearing . .:
construction.
: : .
Figuee 5 is a cross-secitonal view along the lines 5-5 of Figure 3 again showing in additionally bearing con4truction. ;
Figure 6 is a front elevational view of one part ~' ' "
: , - . ' .~
j,.:,....
. .
..:: .
201~2A0 of a ~econd con~truction of cover.
Figure 7 is an isometric view of the covec of Figure 6.
Figure 8 i9 a rear elevational view of the cover of Figure 6.
Figure 9 i~ a cros3 sectional view along the lines 9-9 of Figure 8 ~howing an additional bearing constcuction .
In the drawing like character~ of reference indicate corresponding parts in the different figures.
DETAILED DESCRIPTION
A pillow block bearing is indicated in Figure 5 generally at 10 and comprises a shaft 11 which i9 mounted for rotation relative to a support plate 12. The 3haft 11 cacries an inner bearing element 13 which is rotatable with the shaft.
An outer bearing element 14 is carried in a pillow block e}ement 15 which has an upper wall portion at least partly 3urcounding the outer bearing element and a pair of flange~ 16 and 17 which pcoject outwardly from an annular support po~tion 18.
Mounted between the innec and outer bearing elementJ is provided a plurality of balls 19 and foc convenience of illustcation the cage which supports the balls ~, ,, ,' .~ , .
is omitted. The balls of course pcovide a ~ubAtantially friction free cotation of the innec eace oc beacing element celative to the outec race thus allowing the ~haft 11 to cotate celative to the suppoct plate 12. Between the innec and outec bearing elements i~ provided a channel which is annular in ~hape and which pcovides the acea foc receiving the balls 19.
The channel breaks out in eithec end of the beacing and is coveced by a beacing seal 20 which i~ attached to eithec the innec oc the outer beacing element ~o as to cotate celative to the othec. The beacing seal is designed to retain the grea e within the beacing and to pcevent the entcy of contamination -into the beacing. --- -~
The above descciption of the pillow block and -~
beacing as~embly i3 of a conventional natuce and very many examples of devices of thi~ type are available and well used.
Accocding to the invention thece iA pcovided a covec membec shown in most detail in Figuces 1, 2 and 3 but ~-also it i9 shown mounted in place in Figuces 4 and 5.
The covec member comprises a pair of aide walls ;
25 and 26, a pair of end walls 27 and 28 and a covecing wall 29. The covering wall defines a part cylindrical portion 30 --which is arcanged to extend over the upper part of the pillow -~
block and ha~ a curvature following the cucvature of the outec ' ' '~ -:' ' ,'.," ' ' '-:
'' ':""'.:"
-- 20152~0 isurface of the pillow block. On either side of the cylindrical portion 30 is provided a paic of outwardly extending surfaces 31 and 32 which are inclined downwardly and outwardly from a lower edge of the cylindrical portion 30 to the top edge of the -end wall 27, 28 respectively. As shown in Figure 2 the side wall in elevation haq a shape so that it matchei3 the edge of the uppee wall. ~ach of the side walls has an opening 34 provided thecein of a size to receive the i~qhaft 11 with a slight clearance between the outer sueface of the i~qhaft and the edge of the opening 34. -As shown in Figure 3, the side walls 25 and 26 and the upper wall 29 are thin relative to the iqize of the cover member 90 as to form a hollow interioc which can engage -~
over the pillow block.
A3 best shown in Figure 3 and 4, the side wall 25 and 26 includes a step 35 90 as to form a thinner portion aligned with the bearing thus defining a recess or clearance betwen the outec face of the bearing and the inner surface of the wall 25,26 respectively. Each of the side walls includes a 91it 36 extending fcom the undecside of the opening 34 directly downwaedly to the bottom edge of the side wall. The slit is focmed by hot-cutting through the body of the cover 90 as to focm a slit without removal of any significant amount of -- ., ~, ; ~
`- 201~240 material 90 that in a celaxed condition of the covec the slit i9 closed. Fucthecmoce the slit is cut in a dicection pacallel to the axi~ 90 that the side3 of the slit as best shown in Figure 3 lie dicectly acros~ the thicknes of the wall at cight angles to the qucface of the wall. The slit thUC lies in an axial plane. ~
The cover is focmed fcom polypcopylene of high --flexibility so that it can be twisted and defocmed fcom the ~ :
cest condition shown in the drawings to a distocted condition in which the slit i_ fully opened by twisting of the ~ide wall -:-to allow the slit to pas~ ovec the shaft until the shaft enter3 .
the opening 34.
Pcolypropylene of this type has a vecy high - -~
degcee of flexibility and impact cesistance even at .~:~
tempecatuces down to -50 degcees C. The matecial includes a Uv inhibitocs which pcevent damage due to sunlight action on the pla~tics material.
As best shown in Figure 4, the flanges 16 and 17 . - ~-often caccy caised lettecing 37 on the side sucfaces. The step :~
35 allows the inside sucface of the wall 25 and 26 at the -.
position aligned with the flanges 16 and 17 to engage the side -~
:
sucfaces of flanges in a pcess-fit oc fciction fit thus tending to hold the lowec edge of the side wallq down into contact with . ' ' ~ .'': ., '.
~ '.. '".'.. ~' ;
- ~ ',',"'.~ ,'' :' 201~24~
the plate 12. This action of the pcess fit onto the sides of the flanges also tends to close the slit 36.
~ efoce attachment into place on top of the conventional pillow block, the covec can have a suitable amount of gcease applied into the intecioc of the covec 90 that the acea between the side~ of the bearing and the inside of the side walls 25 and 26 i9 pceferably substantially filled with the grease.
The cover thus act~ to pcotect the bearing fcom impact, moii3tuce, dust and othec contaminant~ and sunlight which can othecwise cause significant degeadation of the bea~ing, the shaft and the suppocting elements~
In an altecnative accangement (not shown) the covec can be pcovided with a filling nipple of conventional type for insection of gcease on a coutine maintenance basis.
In a furthec altecnative (not shown) the simple opening 34 can be incceased in i3ize and pcovided with an insect seal accangement separate com the cove~ and caccied by the covec 90 as to engage the shaft and pcevent moce effectively the escape of greai3e and the entry of contaminants.
The cleacance between the side walls 25 and 26 and the adjacent end face of the bearing iis pceferably at least 1/16th inch which is sufficient to ceceive a sufficient amount - .:
':
`- 2015240 of gcease to pcevent the expansion and contraction causing the pumping of contaminants into the cover and subsequently into the beacing.
Tucning now to Figures 6 thcough 9 thece is shown an alternative con~tcuction of beacing of the type in which a shaft 40 is mounted for cotation and carcied cela~ive to a paic of plates 41 and 42 with an opening thecein thcough which the shaft 40 passes. In this ca~e each of the plates is deformed to form a cup poction 43, 44 for the outec race ~5 of a bearing assembly 46. The beacing assembly include~ an inner race 47 and balls 48. The inner race 47 is attached to the shaft 40 foc rotation therewith. The outer race 45 is cacried in the cup shaped element defined by the defamation of the plates 41 and 42. A bearing arrangement of this type is well known and is used in many locations on many different types of machine.
In this case the covec arcangement is formed in two parts each of which is substantially of the shape ~hown in Figures 6, 7 and 8. In thio case the outer shape of the device i8 substantially triangular with the apexes 50 chamfeced thus forming an irregular hexagon. At aach of the apexes is drilled an opening 51 extending axially of the covec pact. The opening receiYe3 a metal sleeve 52 foc reinforcement of the pact and extending thcough the full thickness of the part. Centcally of ,::
-`- 201524~
the part is formed a countec bore 53 of an outside diameter substantially equal to the outside of the cup defined in the plates 41 and 42. An opening 54 coaxial to the bore 53 extends through the end wall of the part defined by the bore 53. A~ in the pcevious embodiment, a slit 55 extends from the opening 54 through to one edge 56 of the part.
As shown in ~igure 9 the two pacts are slightly different in that one i9 thicker than the other thus defining a bore 53 of one which is deeper than the bore 53A of the other pact. This arrangement accomodate~ the a~symetcy in the cup shaped elements 43 and 44 of the plate~ 41 and 42 respectively.
In opecation the conventional bolts holding togethec the plates 41 and 42 at three positions surcounding the bearing are removed and the cover parts located in po~ition by twisting of the part about the slit 55 to allow it to pass over the shaft 40. The parts are then moved into position on respective side~ of the bearing ~o that the beacing i~ cupped within the boce 53 and the bore 53A of the second part. The metal sleeves 52 then abutt up against the outer surface of the plate3 41 and 42 with the op-ning 51 aligned with the conventional opening in the plates. At this position bolts of incceased length can be in~erted through the openings 51 to clamp the covec against the plates thu~ pcoviding a compressing : ' 20~S~40 action on the plates holding the plates togethec and the bearing in place. The ~leeves prevent compcession of the plastic molded member 90 that it is prevented fcom di~torting --~
under the compre~sive action of the screw fastener.
As previously described the cover can be filled ~ - -with gcease to maintain the beaeing fully covered and --pcotected. ;
An alternative arrangement (not shown) the exterioc shape and the location of the openings 51 is modified 90 that four such openings can be provided in a body which i9 .
substantially cectangular in end elevation.
In a yet fucther embodiment (not shown) for use with bearings mounted at the end of the shaft whe~e there is no shaft projecting outwardly, the opening 54 and the slit 55 can -be omitted and the cove~ simply clamped over the end of the shaft by bolts passing through the part and into the conventional mounting arrangement of the bearing.
.... .
Since various modifications can be made in my invention as hereinabova desccibed, and many apparent}y widely different embodiments of same made within the spicit and scope of the claims without depacting fcom such spicit and scope, it - :.
i9 intended that all matter contained in the accompanying specification shall be intecpceted as illustcative only and not in a limiting sens~.
' '' ., .
' .' ' ,;.
"'..~
Claims
CLAIMS:
(1) A bearing and cover combination comprising a shaft, a support member, a bearing comprising an inner bearing element mounted on the shaft for rotation therewith, an outer bearing element having an outer peripheral surface and defining an annular chamber between the inner and outer bearing elements and having end faces of the chamber at axially facing end faces of the bearing, and bearing means mounted in the chamber for supporting the inner element relative to the outer element for rotation relative thereto, means mounting the outer bearing element in fixed position on the support element for rotation of the shaft relative to the support element and sealing means fully enclosing and substantially sealing the bearing from exposure to the environment, said sealing means including a cover element for the bearing comprising an integrally molded plastics body defining at least an end wall portion covering one of said end faces of said bearing and a peripheral wall portion covering the outer peripheral surface of the outer element, said cover element having means thereon engaging the support element to hold said cover element on said bearing.
(2) The combination according to Claim 1 wherein the plastics material is a flexible polypropylene.
(3) The combination according to Claim 1 wherein the end wall portion includes an opening therein surrounding the shaft and wherein the end wall portion is cut from one edge of the end wall portion to the opening to allow the plastics body to be engaged around the shaft.
(4) The combination according to Claim 3 wherein the cut is formed as a slit of the material so that all of the material remains intact for a closing of the slit when the cover is engaged around the shaft.
(5) The combination according to Claim 4 wherein the slit lies in an axial plane.
(6) The combination according to Claim 1 wherein the end wall portion and the peripheral wall portion are spaced from the underlying portions of the bearing and wherein said engaging means forms a tight compacting fit with the support element.
(7) The combination according to Claim 6 wherein there is at least 1/16th inch clearance between the peripheral wall portion and the end wall portion and the underlying portions of the bearing.
(8) The combination according to Claim 7 wherein the clearance is filled with grease.
(9) The combination according to Claim 1 wherein the support member comprises a pillow block engaged against a plate of a support frame, the pillow block including a part cylindrical upper wall and a pair of flanges projecting outwardly from a lower part of the support member at right angles to the shaft, the cover element including a part cylindrical upper wall surrounding an axis of the bearing, a pair of parallel side faces at right angles to the axis, each side face having an opening therein concentric to the axis for receiving the shaft, a pair of end walls spaced outwardly from the part cylindrical wall in a direction at right angles to the axis with each end wall lying in a plane parallel to the axis, a pair of upper wall portions each extending from the part cylindrical wall to a respective one of the end walls, an underside of the cover element being open to expose a hollow interior thereof for pressing over the pillow block and means defining a pair of slots each extending from the underside to a respective one of the openings.
(10) The combination according to Claim 9 wherein each of the side walls has an inside wall surface defining a recess at a position thereon aligned with the bearing such that the inside wall surface lies substantially in contact with the pillow block at positions thereon spaced from the bearing and there is defined a clearance between the inside wall surface and the bearing for receiving lubricant material.
(11) The combination according to Claim 1 wherein the support member comprises a first plate member and a second plate member clamped together in substantially parallel contacting relationship so as to engage the outer bearing member therebetween in a recess therein surrounding the shaft, the cover element comprising a first portion mounted on one side of one of the plate members and a second portion mounted on one side of the other of the plate members so as to clamp the plate members therebetween, each of the portions having an opening therein for surrounding the shaft a slot extending from the opening to one outside edge of the part and a plurality of openings therethrough for receiving clamping fasteners therethrough.
(12) The combination according to Claim 11 wherein each of the parts is formed from a flexible plastics material and wherein there is provided a rigid insert in each of the openings for communication of force in a direction parallel to the opening to clamp said plate members together.
(13) A cover member for a pillow block bearing arrangement comprising an integrally molded plastics body defining a part cylindrical upper wall surrounding an axis of the bearing, a pair of parallel side faces at right angles to the axis, each side face having an opening therein concentric to the axis for receiving a shaft of the bearing arrangement, a pair of end walls spaced outwardly from the part cylindrical wall in a direction at right angles to the axis with each end wall lying in a plane parallel to the axis, a pair of upper wall portions each extending from the part cylindrical wall to a respective one of the end walls, an underside of the cover element being open to expose a hollow interior thereof for pressing over the pillow block bearing arrangement and means defining a pair of cuts each extending from the underside to a respective one of the openings.
(14) The cover member according to Claim 13 wherein the plastics material is a flexible polypropylene.
(15) The cover member according to Claim 13 wherein each cut is formed as a slit of the material so that all of the material remains intact for a closing of the slit when the cover is engaged around the shaft.
(16) The cover member according to Claim 15 wherein the slit lies in an axial plane.
(17) A cover member for a bearing assembly of the type comprising a first plate member and a second plate member clamped together in substantially parallel contacting relationship so as to engage an outer bearing member therebetween in a recess therein surrounding a shaft, the cover member comprising a first portion mounted on one side of one of the plate members and a second portion mounted on one side of the other of the plate members so as to clamp the plate members therebetween, each of the portions being formed of a resilient plastics material having a recess therein for engaging over the bearing a first opening at a base of the recess for surrounding the shaft, a cut extending from the first opening to one outside edge of the portion, and a plurality of second openings therethrough at spaced positions surrounding said first opening for receiving fasteners therein, each second opening having a rigid insert therein for communication of force in a direction parallel to the opening to clamp said plate members together.
(18) The cover member according to Claim 17 wherein the plastics material is a flexible polypropylene.
(19) The cover member according to Claim 17 wherein the cut is formed as a slit of the material so that all of the material remains intact for a closing of the slit when the cover is engaged around the shaft.
(20) The cover member according to Claim 19 wherein the slit lies in an axial plane.
(1) A bearing and cover combination comprising a shaft, a support member, a bearing comprising an inner bearing element mounted on the shaft for rotation therewith, an outer bearing element having an outer peripheral surface and defining an annular chamber between the inner and outer bearing elements and having end faces of the chamber at axially facing end faces of the bearing, and bearing means mounted in the chamber for supporting the inner element relative to the outer element for rotation relative thereto, means mounting the outer bearing element in fixed position on the support element for rotation of the shaft relative to the support element and sealing means fully enclosing and substantially sealing the bearing from exposure to the environment, said sealing means including a cover element for the bearing comprising an integrally molded plastics body defining at least an end wall portion covering one of said end faces of said bearing and a peripheral wall portion covering the outer peripheral surface of the outer element, said cover element having means thereon engaging the support element to hold said cover element on said bearing.
(2) The combination according to Claim 1 wherein the plastics material is a flexible polypropylene.
(3) The combination according to Claim 1 wherein the end wall portion includes an opening therein surrounding the shaft and wherein the end wall portion is cut from one edge of the end wall portion to the opening to allow the plastics body to be engaged around the shaft.
(4) The combination according to Claim 3 wherein the cut is formed as a slit of the material so that all of the material remains intact for a closing of the slit when the cover is engaged around the shaft.
(5) The combination according to Claim 4 wherein the slit lies in an axial plane.
(6) The combination according to Claim 1 wherein the end wall portion and the peripheral wall portion are spaced from the underlying portions of the bearing and wherein said engaging means forms a tight compacting fit with the support element.
(7) The combination according to Claim 6 wherein there is at least 1/16th inch clearance between the peripheral wall portion and the end wall portion and the underlying portions of the bearing.
(8) The combination according to Claim 7 wherein the clearance is filled with grease.
(9) The combination according to Claim 1 wherein the support member comprises a pillow block engaged against a plate of a support frame, the pillow block including a part cylindrical upper wall and a pair of flanges projecting outwardly from a lower part of the support member at right angles to the shaft, the cover element including a part cylindrical upper wall surrounding an axis of the bearing, a pair of parallel side faces at right angles to the axis, each side face having an opening therein concentric to the axis for receiving the shaft, a pair of end walls spaced outwardly from the part cylindrical wall in a direction at right angles to the axis with each end wall lying in a plane parallel to the axis, a pair of upper wall portions each extending from the part cylindrical wall to a respective one of the end walls, an underside of the cover element being open to expose a hollow interior thereof for pressing over the pillow block and means defining a pair of slots each extending from the underside to a respective one of the openings.
(10) The combination according to Claim 9 wherein each of the side walls has an inside wall surface defining a recess at a position thereon aligned with the bearing such that the inside wall surface lies substantially in contact with the pillow block at positions thereon spaced from the bearing and there is defined a clearance between the inside wall surface and the bearing for receiving lubricant material.
(11) The combination according to Claim 1 wherein the support member comprises a first plate member and a second plate member clamped together in substantially parallel contacting relationship so as to engage the outer bearing member therebetween in a recess therein surrounding the shaft, the cover element comprising a first portion mounted on one side of one of the plate members and a second portion mounted on one side of the other of the plate members so as to clamp the plate members therebetween, each of the portions having an opening therein for surrounding the shaft a slot extending from the opening to one outside edge of the part and a plurality of openings therethrough for receiving clamping fasteners therethrough.
(12) The combination according to Claim 11 wherein each of the parts is formed from a flexible plastics material and wherein there is provided a rigid insert in each of the openings for communication of force in a direction parallel to the opening to clamp said plate members together.
(13) A cover member for a pillow block bearing arrangement comprising an integrally molded plastics body defining a part cylindrical upper wall surrounding an axis of the bearing, a pair of parallel side faces at right angles to the axis, each side face having an opening therein concentric to the axis for receiving a shaft of the bearing arrangement, a pair of end walls spaced outwardly from the part cylindrical wall in a direction at right angles to the axis with each end wall lying in a plane parallel to the axis, a pair of upper wall portions each extending from the part cylindrical wall to a respective one of the end walls, an underside of the cover element being open to expose a hollow interior thereof for pressing over the pillow block bearing arrangement and means defining a pair of cuts each extending from the underside to a respective one of the openings.
(14) The cover member according to Claim 13 wherein the plastics material is a flexible polypropylene.
(15) The cover member according to Claim 13 wherein each cut is formed as a slit of the material so that all of the material remains intact for a closing of the slit when the cover is engaged around the shaft.
(16) The cover member according to Claim 15 wherein the slit lies in an axial plane.
(17) A cover member for a bearing assembly of the type comprising a first plate member and a second plate member clamped together in substantially parallel contacting relationship so as to engage an outer bearing member therebetween in a recess therein surrounding a shaft, the cover member comprising a first portion mounted on one side of one of the plate members and a second portion mounted on one side of the other of the plate members so as to clamp the plate members therebetween, each of the portions being formed of a resilient plastics material having a recess therein for engaging over the bearing a first opening at a base of the recess for surrounding the shaft, a cut extending from the first opening to one outside edge of the portion, and a plurality of second openings therethrough at spaced positions surrounding said first opening for receiving fasteners therein, each second opening having a rigid insert therein for communication of force in a direction parallel to the opening to clamp said plate members together.
(18) The cover member according to Claim 17 wherein the plastics material is a flexible polypropylene.
(19) The cover member according to Claim 17 wherein the cut is formed as a slit of the material so that all of the material remains intact for a closing of the slit when the cover is engaged around the shaft.
(20) The cover member according to Claim 19 wherein the slit lies in an axial plane.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2015240 CA2015240C (en) | 1990-04-24 | 1990-04-24 | Cover element for a bearing |
| AU76566/91A AU7656691A (en) | 1990-04-24 | 1991-04-23 | Cover element for a bearing |
| PCT/CA1991/000131 WO1991016548A1 (en) | 1990-04-24 | 1991-04-23 | Cover element for a bearing |
| CN 91103339 CN1058638A (en) | 1990-04-24 | 1991-04-24 | Bearing covering piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2015240 CA2015240C (en) | 1990-04-24 | 1990-04-24 | Cover element for a bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2015240A1 CA2015240A1 (en) | 1991-10-24 |
| CA2015240C true CA2015240C (en) | 1993-01-05 |
Family
ID=4144814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2015240 Expired - Fee Related CA2015240C (en) | 1990-04-24 | 1990-04-24 | Cover element for a bearing |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN1058638A (en) |
| AU (1) | AU7656691A (en) |
| CA (1) | CA2015240C (en) |
| WO (1) | WO1991016548A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107407335B (en) * | 2015-03-31 | 2019-07-23 | 斯凯孚公司 | Support components especially for movable shafts of food industry machinery |
| US9845860B2 (en) * | 2015-07-20 | 2017-12-19 | Dayco Ip Holdings, Llc | Retaining clamp for molded plastics |
| CN107023576A (en) * | 2016-03-28 | 2017-08-08 | 江阴市富明机械有限公司 | Strong supporting bearing base |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB380974A (en) * | 1930-10-25 | 1932-09-29 | British Thomson Houston Co Ltd | Improvements in and relating to shaft bearings |
| US4869602A (en) * | 1984-11-29 | 1989-09-26 | Winfred M. Berg, Inc. | Bearing seal and retainer |
| GB8504335D0 (en) * | 1985-02-20 | 1985-03-20 | Delfilt Ltd | Bearing cover |
| GB8706660D0 (en) * | 1987-03-20 | 1987-04-23 | Hepco Slide Systems Ltd | Slide systems |
-
1990
- 1990-04-24 CA CA 2015240 patent/CA2015240C/en not_active Expired - Fee Related
-
1991
- 1991-04-23 WO PCT/CA1991/000131 patent/WO1991016548A1/en not_active Ceased
- 1991-04-23 AU AU76566/91A patent/AU7656691A/en not_active Abandoned
- 1991-04-24 CN CN 91103339 patent/CN1058638A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN1058638A (en) | 1992-02-12 |
| AU7656691A (en) | 1991-11-11 |
| CA2015240A1 (en) | 1991-10-24 |
| WO1991016548A1 (en) | 1991-10-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |