CA1209190A - Starter motor bearing seal - Google Patents
Starter motor bearing sealInfo
- Publication number
- CA1209190A CA1209190A CA000452496A CA452496A CA1209190A CA 1209190 A CA1209190 A CA 1209190A CA 000452496 A CA000452496 A CA 000452496A CA 452496 A CA452496 A CA 452496A CA 1209190 A CA1209190 A CA 1209190A
- Authority
- CA
- Canada
- Prior art keywords
- bearing
- housing
- starter motor
- sleeve
- shaft
- 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
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
- H02K5/1672—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings radially supporting the rotary shaft at both ends of the rotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/124—Sealing of shafts
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Motor Or Generator Frames (AREA)
- Sealing Of Bearings (AREA)
- Sliding-Contact Bearings (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Abstract of the Disclosure A bearing support structure in a starter motor housing includes a housing having a bore which receives a bearing and seal member disposed axially inwardly from the bearing.
The bearing is exposed from the end of the starter motor to permit introduction of fluid lubricant to the bearing from a remote source while the seal prevents lubricant, particulate matter and environmental debris from entering the interior of the starter motor housing, thereby preventing harmful deposits on the electrical components within the starter motor. In the preferred embodiment, the housing comprises an end plate for a tubular starter motor housing.
The bearing is exposed from the end of the starter motor to permit introduction of fluid lubricant to the bearing from a remote source while the seal prevents lubricant, particulate matter and environmental debris from entering the interior of the starter motor housing, thereby preventing harmful deposits on the electrical components within the starter motor. In the preferred embodiment, the housing comprises an end plate for a tubular starter motor housing.
Description
STARTER MOTOR BEARING SEAL
Background of the Xnvention I. Field of the Present Invention The present invention relates generally to a housing for an electrical starter motor, and more particularly to particular construction of a bearing support for rotatably supporting a rotor shaft within the motor housing.
II. Description of the Prior Art As is well known, electric motors such as starter motors for internal combustion engines include a rotor shaft rotatably mounted within the motor housing. A rotor winding is secured to the rotor shaft for rotation there-with which is coaxially arranged within a set of stator windings. While the interaction of the electromagnetic forces between the stator windings and rotor windings causes rotation of the rotor shaft, it is necessary to support the shaft in a manner which maintains the align-ment between the stator winding and the rotor winding.
Thus, bearings are provided in the starter motor housing for rotatably supporting the shaft therein.
Quite often the bearing assemblies are ball or roller bearing assemblies which require lubrication to minimize resistance to rotation and to prolong the life of the bearing parts. Thus, the bearing support structure is often provided with fluid passageways to direct a supply of lubricant to the bearing. Thus, construction of the bearing support to include such lubricating means increases the cost and complexity of the bearing housing.
I
/
P~.~3~9~
In addition, it is necessary to protect the elec-trical components of the starter motor from environmental conditions and debris, and the housing is, therefore, constructed so as to completely enclose the windings and other electrical components within the housing. However, the space intermediate the rollers between the inner and outer race of the bearing permit dust and other environmental debris to enter within the housing and build up upon the internal parts of the starter motor. Thus, the axially outermost end of the bearing may be provided with a seal to prevent the introduction of foreign matter through the bearing and into the interior of the motor housing. However, such placement of the seal further complicates or restricts placement of lubricant passages which provide lubricant to the bearingO Moreover, such an arrange-ment does not prevent lubricant from entering the interior of the starter motor housing and contaminating the components therein.
While self-lubricating bearing materials can be used to eliminate the needfor continuous lubrication of the bearing, the above described seal arrangement fails to protect the starter motor components from particulate debris which can result from wear on the self-lubricating material. In addition, disassembly of the housing or modified construction of the housing would be necessary to provide supplemental lubrication to the bearing.
Summary of the Present Invention .
The present invention overcomes the above-mentioned disadvantages by providing a starter motor housing having a shaft rotatably mounted therein comprising: a tubular and cylindrical housing member, said housing member open at one end and forming an interior housing chamber, a circular end plate 3~
having an integral elongate sleeve with an axial bore extending axially outwardly from one side of said end plate, means for detachably securing said end plate to said open end of said housing so that said sleeve extends axially inwardly into said housing chamber, said axial sleeve bore forming a bearing surface for the shaft, a resilient seal carried adjacent an inner end of said sleeve, said seal engaging an outer peri-pheral surface of the shaft; said seal being radially compressed between said sleeve and the shaft to thereby form a fluid tight seal between said sleeve and the shaft. A bearing is positioned in the bore axially outwardly of the seal to be exposed to the exterior of the housing so that a supplemental lubricant can be readily introduced into the bearing structure.
nevertheless, the lubricant and the other environmental debris are sealed from the interior of the housing so that the elec-trical components remain clean and can operate at the highest capacity.
Thus, the present invention provides a bearing support structure which permits support of the rotor shaft by a well lubricated bearing and which prevents contamination of the components within the housing by the lubricant or environmental debris. Since the structure is simple, the device is inexpen-sively produced and is easy to maintain. The construction includes a minimum number of parts and thus substantially decreases the wear and complexity of the 1~9~
starter motor, and is therefore, especially advantageous for use in a starter mctor for an engine in an aircraft, although as will be apparent, it will have use in engines for other applications as well.
Brief Description of the Drawing The present invention and its advantages will be more clearly understood by reference to the following detailed description of a preferred embodiment, when read in conjunction with the accompanying drawing in which like reference characters refer to like parts in the views, and ir, which:
FIG. 1 is a broken side plan view showing a sectional elevation of a portion of a starter motor constructed in accordance with the present invention; and FIG. 2 is a front plan view of the starter motor shown in FIG. 1.
Detailed Description of a Preferred Embodiment of the Present Invention Referring now to FIG. 1, a starter motor 10 according to the present invention is thereshown comprising a tubu-lar housing 12 coaxially aligned with a rotor shaft 14 about an axis 16. The rotor shaft 14 supports a rotor winding (not shown) axially aligned with a stator winding (not shown) disposed along the inner circumfery of the tubular housing 12 in the conventional manner.
One end of the tubular housing 12 is enclosed by an end plate 18 having an annular peripheral wall portion 20 which is slidably received in thy open end of the housing 12. Appropriate means such as welds, bolts or the like go No. 5 are used to secure the end plate 18 to the tubular housing 12. The end plate 18 also includes a central annular sleeve portion 22 which forms a bearing support for a bearing 28 through which the shaft 14 can be inserted.
The annular sleeve portion 22 defines a bore 24 within a.
peripheral wal.l portion 26 engaging the outer surface of the bearing 28. The bearing 28 is positioned at the axially outward end of the bore 24 so that the bearing 28 is exposed exteriorly of the axial end of the starter motor 10 and, is therefore, positioned so that lubricant can be introduced to the bearing 28 from the axial end of the starter motor 10.
While the particular means for directing lubricant to the bearing can be varied--it can for instance, comprise a splash system or a pressurized injection system--placement of the bearing at the axial end of the bore 24 permits the use of a wide variety of previously known lubrication systems.
In addition, the annular sleeve portion 22 of the end plate 18 includes a bore portion 30 axially positioned inwardly from the bore portion 24. An annular seal ring 32 preferably formed from a pliable, resilient material is entrained in the bore portion 30. The central opening in annular ring 32 has a diameter the same as or slightly less than the diameter of the shaft 14 so that the ring 32 compressively seals against the shaft 14 and prevents lubri-cant or environmental debris from entering into the interior of the housing 12, thus protecting the electrical components of the starter motor.
UP
~z~
No. 6 The bearing 28 us,ed in the pre,ferred embodiment of the present invention comprises a sleeve made of a self-lubricating material. Such a wearing is substantially less expensive than ball or roller bearings and, thus, further serves to decrease the cost and weight ox the starter motor according to the present invention. The useful life of the bearing is prolonged by positioning it at the axially out-ward end of the bore 24 as discussed above so that the bearing is exposed to a remote lubrication system 29. Moreover, any particulate matter caused by wearing out the bearing material is prevented from entering the interior of the housing by the annular seal ring 32.
Referring now to FIG. 2, the end plate 18 also includes a peripheral end flange 40 which abuts against the axial end of the tubular housing 12 and which includes extended flange portions 42 on opposite sides of the flange.
Each extended flange portion 42 includes a mounting hole 44 through which an appropriate fastener (not shown) can be inserted to secure the end plate 18 and thus the starter motor 10 to an appropriate support structure. As shown in FIG. 1, the end plate 18 is secured to the driving end of the starter motor 10 at which a premium gear is secured to the shaft 14. Thus, the extended flange portions 42 permit the starter motor 10 to be secured to a fly wheel housing in a well known manner. However, it is to be understood that the end plate 18 could also be provided at the opposite end of the starter motor.
~2~9~
Thus, the present invention pro~7ides a bearing support structure for a starter motor housing in which the bearing is disposed at an axial end of the starter motor and is, therefore, exposed exteriorly of the starter motor for connection to a lubricant system. In addition, the bearing support structure includes sealing means which prevents lubricant, particulate matter and environmental debris from entering into the interior of the starter motor housing because it is disposed axially inwardly of the bearing. While the bearing support in the preferred embodiment is provided in an end cap for a tubular starter motor housing, it will be understood that the structure can also be employed in a closed end starter motor housing without departing from the scope of the present invention.
moreover, when a single piece sleeve bearing made of a self-lubricating material is used as a bearing, a starter motor according to the present invention is substantially lighter and less expensive than previously known bearing supports for rotor shafts in a starter motor.
Having thus described my invention, many modifications thereto will become apparent to those skilled in the art to which it pertains without departing from the scope and spirit of the present invention as defined in the appended claims.
What is claimed is:
Background of the Xnvention I. Field of the Present Invention The present invention relates generally to a housing for an electrical starter motor, and more particularly to particular construction of a bearing support for rotatably supporting a rotor shaft within the motor housing.
II. Description of the Prior Art As is well known, electric motors such as starter motors for internal combustion engines include a rotor shaft rotatably mounted within the motor housing. A rotor winding is secured to the rotor shaft for rotation there-with which is coaxially arranged within a set of stator windings. While the interaction of the electromagnetic forces between the stator windings and rotor windings causes rotation of the rotor shaft, it is necessary to support the shaft in a manner which maintains the align-ment between the stator winding and the rotor winding.
Thus, bearings are provided in the starter motor housing for rotatably supporting the shaft therein.
Quite often the bearing assemblies are ball or roller bearing assemblies which require lubrication to minimize resistance to rotation and to prolong the life of the bearing parts. Thus, the bearing support structure is often provided with fluid passageways to direct a supply of lubricant to the bearing. Thus, construction of the bearing support to include such lubricating means increases the cost and complexity of the bearing housing.
I
/
P~.~3~9~
In addition, it is necessary to protect the elec-trical components of the starter motor from environmental conditions and debris, and the housing is, therefore, constructed so as to completely enclose the windings and other electrical components within the housing. However, the space intermediate the rollers between the inner and outer race of the bearing permit dust and other environmental debris to enter within the housing and build up upon the internal parts of the starter motor. Thus, the axially outermost end of the bearing may be provided with a seal to prevent the introduction of foreign matter through the bearing and into the interior of the motor housing. However, such placement of the seal further complicates or restricts placement of lubricant passages which provide lubricant to the bearingO Moreover, such an arrange-ment does not prevent lubricant from entering the interior of the starter motor housing and contaminating the components therein.
While self-lubricating bearing materials can be used to eliminate the needfor continuous lubrication of the bearing, the above described seal arrangement fails to protect the starter motor components from particulate debris which can result from wear on the self-lubricating material. In addition, disassembly of the housing or modified construction of the housing would be necessary to provide supplemental lubrication to the bearing.
Summary of the Present Invention .
The present invention overcomes the above-mentioned disadvantages by providing a starter motor housing having a shaft rotatably mounted therein comprising: a tubular and cylindrical housing member, said housing member open at one end and forming an interior housing chamber, a circular end plate 3~
having an integral elongate sleeve with an axial bore extending axially outwardly from one side of said end plate, means for detachably securing said end plate to said open end of said housing so that said sleeve extends axially inwardly into said housing chamber, said axial sleeve bore forming a bearing surface for the shaft, a resilient seal carried adjacent an inner end of said sleeve, said seal engaging an outer peri-pheral surface of the shaft; said seal being radially compressed between said sleeve and the shaft to thereby form a fluid tight seal between said sleeve and the shaft. A bearing is positioned in the bore axially outwardly of the seal to be exposed to the exterior of the housing so that a supplemental lubricant can be readily introduced into the bearing structure.
nevertheless, the lubricant and the other environmental debris are sealed from the interior of the housing so that the elec-trical components remain clean and can operate at the highest capacity.
Thus, the present invention provides a bearing support structure which permits support of the rotor shaft by a well lubricated bearing and which prevents contamination of the components within the housing by the lubricant or environmental debris. Since the structure is simple, the device is inexpen-sively produced and is easy to maintain. The construction includes a minimum number of parts and thus substantially decreases the wear and complexity of the 1~9~
starter motor, and is therefore, especially advantageous for use in a starter mctor for an engine in an aircraft, although as will be apparent, it will have use in engines for other applications as well.
Brief Description of the Drawing The present invention and its advantages will be more clearly understood by reference to the following detailed description of a preferred embodiment, when read in conjunction with the accompanying drawing in which like reference characters refer to like parts in the views, and ir, which:
FIG. 1 is a broken side plan view showing a sectional elevation of a portion of a starter motor constructed in accordance with the present invention; and FIG. 2 is a front plan view of the starter motor shown in FIG. 1.
Detailed Description of a Preferred Embodiment of the Present Invention Referring now to FIG. 1, a starter motor 10 according to the present invention is thereshown comprising a tubu-lar housing 12 coaxially aligned with a rotor shaft 14 about an axis 16. The rotor shaft 14 supports a rotor winding (not shown) axially aligned with a stator winding (not shown) disposed along the inner circumfery of the tubular housing 12 in the conventional manner.
One end of the tubular housing 12 is enclosed by an end plate 18 having an annular peripheral wall portion 20 which is slidably received in thy open end of the housing 12. Appropriate means such as welds, bolts or the like go No. 5 are used to secure the end plate 18 to the tubular housing 12. The end plate 18 also includes a central annular sleeve portion 22 which forms a bearing support for a bearing 28 through which the shaft 14 can be inserted.
The annular sleeve portion 22 defines a bore 24 within a.
peripheral wal.l portion 26 engaging the outer surface of the bearing 28. The bearing 28 is positioned at the axially outward end of the bore 24 so that the bearing 28 is exposed exteriorly of the axial end of the starter motor 10 and, is therefore, positioned so that lubricant can be introduced to the bearing 28 from the axial end of the starter motor 10.
While the particular means for directing lubricant to the bearing can be varied--it can for instance, comprise a splash system or a pressurized injection system--placement of the bearing at the axial end of the bore 24 permits the use of a wide variety of previously known lubrication systems.
In addition, the annular sleeve portion 22 of the end plate 18 includes a bore portion 30 axially positioned inwardly from the bore portion 24. An annular seal ring 32 preferably formed from a pliable, resilient material is entrained in the bore portion 30. The central opening in annular ring 32 has a diameter the same as or slightly less than the diameter of the shaft 14 so that the ring 32 compressively seals against the shaft 14 and prevents lubri-cant or environmental debris from entering into the interior of the housing 12, thus protecting the electrical components of the starter motor.
UP
~z~
No. 6 The bearing 28 us,ed in the pre,ferred embodiment of the present invention comprises a sleeve made of a self-lubricating material. Such a wearing is substantially less expensive than ball or roller bearings and, thus, further serves to decrease the cost and weight ox the starter motor according to the present invention. The useful life of the bearing is prolonged by positioning it at the axially out-ward end of the bore 24 as discussed above so that the bearing is exposed to a remote lubrication system 29. Moreover, any particulate matter caused by wearing out the bearing material is prevented from entering the interior of the housing by the annular seal ring 32.
Referring now to FIG. 2, the end plate 18 also includes a peripheral end flange 40 which abuts against the axial end of the tubular housing 12 and which includes extended flange portions 42 on opposite sides of the flange.
Each extended flange portion 42 includes a mounting hole 44 through which an appropriate fastener (not shown) can be inserted to secure the end plate 18 and thus the starter motor 10 to an appropriate support structure. As shown in FIG. 1, the end plate 18 is secured to the driving end of the starter motor 10 at which a premium gear is secured to the shaft 14. Thus, the extended flange portions 42 permit the starter motor 10 to be secured to a fly wheel housing in a well known manner. However, it is to be understood that the end plate 18 could also be provided at the opposite end of the starter motor.
~2~9~
Thus, the present invention pro~7ides a bearing support structure for a starter motor housing in which the bearing is disposed at an axial end of the starter motor and is, therefore, exposed exteriorly of the starter motor for connection to a lubricant system. In addition, the bearing support structure includes sealing means which prevents lubricant, particulate matter and environmental debris from entering into the interior of the starter motor housing because it is disposed axially inwardly of the bearing. While the bearing support in the preferred embodiment is provided in an end cap for a tubular starter motor housing, it will be understood that the structure can also be employed in a closed end starter motor housing without departing from the scope of the present invention.
moreover, when a single piece sleeve bearing made of a self-lubricating material is used as a bearing, a starter motor according to the present invention is substantially lighter and less expensive than previously known bearing supports for rotor shafts in a starter motor.
Having thus described my invention, many modifications thereto will become apparent to those skilled in the art to which it pertains without departing from the scope and spirit of the present invention as defined in the appended claims.
What is claimed is:
Claims (6)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A starter motor housing having a shaft rotatably mounted therein comprising:
a tubular and cylindrical housing member, said housing member open at one end and forming an interior housing chamber, a circular end plate having an integral elongate sleeve with an axial bore extending axially outwardly from one side of said end plate, means for detachably securing said end plate to said open end of said housing so that said sleeve extends axially inwardly into said housing chamber, said axial sleeve bore forming a bearing surface for the shaft, a resilient seal carried adjacent an inner end of said sleeve, said seal engaging an outer peripheral surface of the shaft; said seal being radially compressed between said sleeve and the shaft to thereby form a fluid tight seal between said sleeve and the shaft.
a tubular and cylindrical housing member, said housing member open at one end and forming an interior housing chamber, a circular end plate having an integral elongate sleeve with an axial bore extending axially outwardly from one side of said end plate, means for detachably securing said end plate to said open end of said housing so that said sleeve extends axially inwardly into said housing chamber, said axial sleeve bore forming a bearing surface for the shaft, a resilient seal carried adjacent an inner end of said sleeve, said seal engaging an outer peripheral surface of the shaft; said seal being radially compressed between said sleeve and the shaft to thereby form a fluid tight seal between said sleeve and the shaft.
2. The invention as defined in claim 1 wherein said axial bore slidably receives a bearing therein.
3. The invention as defined in claim 2, wherein said bearing positioned in said bore is exposed exteriorly of said housing.
4. The invention as defined in claim 3 wherein said bearing is a sleeve made of a self-lubricating bearing material.
5. The invention as defined in claim 3 and further comprising a lubricant supply means remote from said housing means for introducing lubricant to the exposed bearing.
6. The invention as defined in claim 1, 2 or 3 wherein said end plate includes a radial flange having means for mounting said plate to a support frame.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US48726483A | 1983-04-21 | 1983-04-21 | |
| US487,264 | 1983-04-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1209190A true CA1209190A (en) | 1986-08-05 |
Family
ID=23935031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000452496A Expired CA1209190A (en) | 1983-04-21 | 1984-04-19 | Starter motor bearing seal |
Country Status (9)
| Country | Link |
|---|---|
| AU (1) | AU565681B2 (en) |
| BR (1) | BR8401925A (en) |
| CA (1) | CA1209190A (en) |
| DE (1) | DE3414425A1 (en) |
| FR (1) | FR2544837A1 (en) |
| GB (1) | GB2139014B (en) |
| IT (1) | IT1199597B (en) |
| SE (1) | SE8401894L (en) |
| ZA (1) | ZA842912B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6008556A (en) * | 1995-05-03 | 1999-12-28 | Packaging Corporation Of America | Seal device for isolating bearing assemblies in a motor |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE527042C (en) * | 1931-06-13 | Sachsenwerk Licht & Kraft Ag | Small electric motor | |
| DE8205105U1 (en) * | 1982-06-24 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Flameproof shaft bushing, especially for explosion-proof electrical machines | |
| DE460383C (en) * | 1925-09-08 | 1928-05-25 | Schweinfurter Praez S Kugel La | Sealing, especially for bearings in which a flexible material is pressed against the shaft by the conical surfaces of the sealing device |
| US1685651A (en) * | 1925-10-31 | 1928-09-25 | Gen Electric | Dynamo-electric machine |
| GB369642A (en) * | 1930-12-22 | 1932-03-22 | Gen Electric Co Ltd | Improvements in or relating to electric motors |
| GB386841A (en) * | 1932-04-21 | 1933-01-26 | Paul Groschopp | Improvements in or relating to electric motors |
| US2210836A (en) * | 1936-10-21 | 1940-08-06 | Sullivan Machinery Co | Motor bearing seal lubricating means |
| US2473139A (en) * | 1945-11-07 | 1949-06-14 | United Aircraft Corp | Piston rod packing lubricator |
| GB647070A (en) * | 1947-11-06 | 1950-12-06 | Abraham Schmukler | Improvements in electrical metal polishing and the like devices |
| GB735673A (en) * | 1952-04-03 | 1955-08-24 | Leder & Co A G | Driving device for belt drives |
| GB1028515A (en) * | 1961-12-27 | 1966-05-04 | Gen Electric | Improvements in bearing assemblies of contra-rotating electric motors |
| DE1849761U (en) * | 1962-01-27 | 1962-04-12 | Elektrotechnik Maschb A Loell | ELECTRIC MOTOR FOR DRIVING LAUNDRY SPIN. |
| FR1451212A (en) * | 1964-06-19 | 1966-01-07 | Commissariat Energie Atomique | Stator sealing jacket for rotating machine |
| DE2001166B2 (en) * | 1970-01-13 | 1972-04-20 | Siemens AG, 1000 Berlin u 8000 München | SMALL ENGINE WITH A POROUS SLIDING BEARING |
| CH552907A (en) * | 1972-12-07 | 1974-08-15 | Bbc Brown Boveri & Cie | BEARING ARRANGEMENT OF THE ROTOR OF AN ELECTRIC MACHINE. |
| ZA783651B (en) * | 1977-07-01 | 1979-06-27 | Lucas Industries Ltd | Starter motor |
| DE8018284U1 (en) * | 1980-07-08 | 1980-10-02 | Robert Bosch Gmbh, 7000 Stuttgart | ELECTRIC MACHINE |
-
1984
- 1984-04-05 SE SE8401894A patent/SE8401894L/en not_active Application Discontinuation
- 1984-04-12 GB GB08409507A patent/GB2139014B/en not_active Expired
- 1984-04-17 DE DE19843414425 patent/DE3414425A1/en not_active Withdrawn
- 1984-04-17 AU AU27001/84A patent/AU565681B2/en not_active Ceased
- 1984-04-18 BR BR8401925A patent/BR8401925A/en unknown
- 1984-04-18 ZA ZA842912A patent/ZA842912B/en unknown
- 1984-04-19 CA CA000452496A patent/CA1209190A/en not_active Expired
- 1984-04-19 FR FR8406210A patent/FR2544837A1/en active Pending
- 1984-04-24 IT IT83619/84A patent/IT1199597B/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6008556A (en) * | 1995-05-03 | 1999-12-28 | Packaging Corporation Of America | Seal device for isolating bearing assemblies in a motor |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2700184A (en) | 1984-10-25 |
| ZA842912B (en) | 1984-11-28 |
| DE3414425A1 (en) | 1984-10-25 |
| SE8401894D0 (en) | 1984-04-05 |
| BR8401925A (en) | 1984-11-27 |
| FR2544837A1 (en) | 1984-10-26 |
| IT1199597B (en) | 1988-12-30 |
| AU565681B2 (en) | 1987-09-24 |
| GB2139014B (en) | 1986-10-15 |
| IT8483619A0 (en) | 1984-04-24 |
| GB2139014A (en) | 1984-10-31 |
| SE8401894L (en) | 1984-10-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |