US3674112A - Centralized lubrication system - Google Patents
Centralized lubrication system Download PDFInfo
- Publication number
- US3674112A US3674112A US51059A US3674112DA US3674112A US 3674112 A US3674112 A US 3674112A US 51059 A US51059 A US 51059A US 3674112D A US3674112D A US 3674112DA US 3674112 A US3674112 A US 3674112A
- Authority
- US
- United States
- Prior art keywords
- lubricant
- temperature
- sensor
- thermistor
- points
- 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 - Lifetime
Links
- 238000005461 lubrication Methods 0.000 title claims abstract description 19
- 239000000314 lubricant Substances 0.000 claims abstract description 53
- 125000004122 cyclic group Chemical group 0.000 claims description 4
- 230000001050 lubricating effect Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 2
- 230000011664 signaling Effects 0.000 claims description 2
- 238000002347 injection Methods 0.000 description 9
- 239000007924 injection Substances 0.000 description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 8
- 229910052710 silicon Inorganic materials 0.000 description 8
- 239000010703 silicon Substances 0.000 description 8
- 210000002445 nipple Anatomy 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000004382 potting Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/18—Indicating or safety devices
-
- 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
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/12—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load
- F16C17/24—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with devices affected by abnormal or undesired positions, e.g. for preventing overheating, for safety
- F16C17/243—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with devices affected by abnormal or undesired positions, e.g. for preventing overheating, for safety related to temperature and heat, e.g. for preventing overheating
-
- 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
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/1045—Details of supply of the liquid to the bearing
-
- 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
- F16N—LUBRICATING
- F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
- F16N29/02—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems for influencing the supply of lubricant
-
- 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
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned
-
- 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
- F16N—LUBRICATING
- F16N2230/00—Signal processing
- F16N2230/10—Timing network
Definitions
- Patent Roberts [45] July4, 1972 [54] CENTRALIZED LUBRICATION SYSTEM [72] Inventor: Robert D. Roberts, Streetsboro, Ohio [73] Assignee: Houdaille Industries, luc., Buffalo, N.Y.
- ABSTRACT A centralized lubrication system of the type in which a distributor periodically injects a predetermined quantity of lubri cant to each of a plurality of lubrication sites in a predetermined sequence, including sensor means associated with each of the sites, a control means which receives signals from each of the sensor means, and an auxiliary delivery means actuated by the control means to inject additional amounts of lubricant to flood the lubrication site when the sensor associated with that site indicates that an excessive temperature has been reached.
- the control means may also include means for resetting the sensors after the condition of excessive temperature is reached to determine whether the flooding ofthe site has been effective to reduce the temperature below the predetermined maximum. Additionally, the system may include a timer which cuts off the additional supply of lubricant and signals that the particular site is in such a condition that additional amounts of lubricant are ineffective to reduce the temperature to an acceptable value.
- This invention is in the field of centralized lubrication systems which operate to inject controlled amounts of lubricant periodically into a plurality of lubrication sites.
- the invention is particularly concerned with a control system which automatically dispenses additional amounts of lubricant to one or more sites which are overheated, and automatically terminates this additional lubricant injection if it is ineffective to reduce the temperature to below a predetermined maximum.
- the present invention is concerned with a centralized lubrication system which, for purposes of illustration, will be assumed to be a bearing lubrication system for simultaneous lubrication of a plurality of bearings.
- Each of the bearings being lubricated is provided with a sensor which is capable of indicating the existence of an over-temperature condition and transmitting an electrical signal in response thereto.
- These electrical signals are fed to a control means which utilizes the signals to operate a secondary injection system for injecting additional quantities of lubricant into the overheated bearing, flooding the bearing with additional lubricant.
- Timing means are also provided to reset the sensor and verify that the additional injection of lubricant has served its function of reducing the temperature to below the predetermined maximum.
- Additional control means are also provided which are actuated upon the expiration of the cycle of the aforementioned timer to terminate further injection of the additional lubricant into the bearing to avoid pumping copious quantities of lubricant into a bearing which is not in a condition to be benefited by the additional lubricant injection.
- Indicator means are also provided to notify an operator that the bearing remains overheated, so that the equipment can be shut down before catastrophic failure might occur.
- FIG. 1 is a somewhat schematic view of a centralized lubrication system according to the present invention for lubricating a plurality of bearings;
- FIG. 2 is a view partly in elevation and partly in cross-section illustrating one type of bearing temperature sensing device which can be employed;
- FIG. 3 is a somewhat enlarged sectional view of the sensing element shown in FIG. 2;
- FIG. 4 is a block diagram of a control system ofthe type employed in the present invention.
- FIG. 5 is a circuit diagram of one of the module units shown in the block diagram of FIG. 4;
- FIG. 6 is a view of a modied form of the invention where-in the temperature sensing means is applied to the periphery of a bearing assembly;
- FIG. 7 is a cross-sectional view on an enlarged scale of the temperature sensor employed in FIG. 6.
- reference numeral l0 has been applied to a pump which delivers lubricant under pressure from a source (not shown) to a tee fitting 11, the pump being driven by means of a motor l2.
- a pressure sensitive switch 13 also communicates with the tee fitting 11 and operates to deenergize the motor 12 in the event that the discharge pressure of the pump exceeds a predetermined value.
- a portion of the pump output is directed to a cyclic lubricant distributor generally indicated at reference numeral 14 of the drawings.
- the particular distributor is schematically illustrated in FIG. 1 and is a single line cyclic lubricant distributor of the type well known in the art. A typical illustration of such a distributor will be found in Harter U.S. Pat. No. 2,792,9I l.
- the details of the distributor, per se, do not form a novel part of the present invention, and any distributor system which operates to cyclically inject predetermined quantities of lubricant in sequence with a plurality of lubricating sites can be employed for purposes of the present invention.
- the particular distributor 14, as shown in FIG. 1, includes an inlet block unit 15, two intennediate block units 16 and 17 and an end block unit 18.
- a conduit 19 is provided to direct pressurized lubricant discharged from the intermediate block unit 16 into a bearing 20, and another conduit 21 is provided to discharge the pressurized lubricant from this unit cyclically into a bearing 22.
- the conduit 23 conveys the pressurized lubricant from the intermediate block unit 17 into a bearing 24 and a conduit 25 associated with the same intermediate block unit delivers pressurized lubricant to a bearing assembly 26.
- each of the bearings 20, 22, 24 and 26 are sensor units 27, 28, 29 and 30, respectively.
- sensor units 27, 28, 29 and 30, are Associated with each of the bearings 20, 22, 24 and 26.
- each of the bearing assemblies may be provided with troughs 31, 32, 33 and 34 for collecting the excess lubricant.
- conduit 35 Another portion ofthe pressurized lubricant is conveyed via conduit 35 to serve as a secondary distribution system for injecting additional quantities of lubricant selectively into the individual bearings upon the attainment of an overtemperature condition.
- a branch line 36 under the control of a valve 37 operated by a solenoid 38 directs lubricant, as required, from the conduit 35 into the bearing 20.
- conduits 39, 40 and 41 are provided with solenoid operated valves 42, 43 and 44 under the control of solenoids 45, 46 and 47, respectively, to deliver lubricant, as needed, to the bearings 24, 30 and 28.
- the sensing elements and the various solenoids are all electrically connected to a central control box 48 which contains most of the electrical control circuitry illustrated in FIG. 4 of the drawings.
- FIGS. 2 and 3 illustrate one such device wherein the sensor unit is applied to a bearing housing generally indicated at reference numeral 50, the housing having a shaft 51 journaled for rotation therein.
- the device shown in FIGS. 2 and 3 is a combined temperature sensor and lubrication inlet, and consists of a tee fitting 52 which has one leg receiving a temperature sensing device generally indicated at reference numeral 53 and has another leg 54 used for the introduction of a lubricant into the bearing assembly.
- the tee tting 52 has an externally threaded leg 55 received in threaded engagement in the bearing housing 50, and has an axial bore 56 delivering the lubricant to a registering bore 57 in the bearing housing.
- the temperature sensor 53 may consist of a nipple 58 havinga tapered threaded end portion 59 arranged to be received in the leg of the tee fitting 52.
- a hexagonal collar 60 integrally formed on the nipple 58 is provided to accommodate a wrench used in threading the nipple 58 securely within the tee fitting 52.
- the actual temperature sensing of the device is accomplished through the use of a thermistor 61 having a pair of insulated leads 62 and 63 which are electrically connected to the resistance sensing circuit.
- the leads are secured to the leads extending from the thermistor 6l by means of a tie wrap 65.
- the sensorassembly is securely anchored within the hollow interior of the nipple 58 by a deposit 66 of a potting compound such as an epoxy resin.
- a bearing housing 70 is shown surrounding a shaft 71 in which it is joumaled.
- the temperature sensing device in this instance is illustrated at reference numeral 72 and, as best shown in FIG. 7, includes a housing 73 having a mounting hole 74 formed therein through which there is received a bolt 75 which secures the sensor assembly to the housing 70.
- the sensing element in the assembly is a thermistor 76 which is joined to a pair of leads 77 and 78 through a tie wrap 79 contained within a piece of shrinkable plastic tubing 80.
- a deposit of potting compound 81 such as an epoxy resin is used to secure the electrical sensing elements within the housing 73.
- FIG. of the drawings A module embodying electrical circuitry for sensing the resistance of the temperature sensitive element is illustrated in FIG. of the drawings. ln the embodiment of the invention illustrated, there are four temperature sensing units employed. The corresponding modules have been identified at reference numerals 82, 83, 84 and 85 in FIG. 4. Since the structure of the modules is identical, a description of the module 82 associated with the temperature sensor 27 will suffice for all.V
- a step-down transformer 86 has its primary winding 87 connected to a suitable source of alternating current by means of terminals 88 and 89.
- a secondary winding 90 applies a reduced alternating current voltage across an alternating current relay coil 91, a capacitor 92 and a parallel combination of a diode 93 and a silicon controlled rectifier 94.
- Half wave pulses continuously pass through the relay coil 91 in the direction permitted by the diode 93, but the relay coil 91 does not become energized by these half wave pulses.
- the silicon controlled rectifier 94 is triggered from a voltage divider network including a resistor 95, the thermistor sensing element 96, a potentiometer 97, a diode 98 and a resistor 99.
- the resistor 95 has a resistance value of about 5,600 ohms
- the potentiometer has a maximum resistance of about 180,000 ohms
- the resistor 99 has a resistance of about 1,200 ohms.
- a reference diode such as a zener diode 100 is employed to limit the voltage applied to the gate of the silicon controlled rectifier 94.
- Energization of the relay coil 91 serves to close a pair of normally open contacts 101, to open a pair of normally closed contacts 102 and to close a pair of normally open contacts 103.
- the latter is in series with a nonnally closed relay contact 105 under the control of a relay coil 106. Closing of the contacts 103 insures that the thermistor element 96 is out of the circuit and applies a continuous voltage across the diode 100 and the resistor 99 suicient to maintain the silicon controlled rectier 94 conductive.
- an indicator light 107 is energized through the normally closed relay contact 102 from a pair of terminals 109 and 109 leading to a suitable source of alternating current voltage. Energization of the light 107 thereby indicates that the bearing temperature is below the particular temperature being sensed.
- a warning light 108 is then energized through the then closed contacts 101.
- a voltage is developed across the lines 110 and 1 1l to serve as a control voltage initiating operation of a cycle timer 112 shown diagrammatically in FIG. 4.
- These energizing voltages for modules 82 through 85, respectively, are illustrated at single lines l 13 through 116, respectively, of FIG. 4.
- the cycle timer 112 may be a conventional timing device including a synchronous motor which drives one or more cams to close energizing switches.
- the cycle timer 112 sends reset signals through lines 117, 118, 119 and 120 into the modules 82 through 85, respectively. As illustrated in FIG. 5, the reset signal is used to energize the relay coil 106 which in turn opens the normally closed relay contact 105. Opening of the relay contact 105 serves to inject the thermistor element 96 into the circuit again to resume its temperature sensing function.
- control relays 121 through 124 are energized, thereby actuating their associated solenoids 38, 45, 46 or 47 to inject additional quantities of lubricant as a continuous stream into their associated bearing assemblies.
- the cycle timer 112 sends its reset signal into the affected module and, if the temperature has dropped sufficiently so that it is below the predetermined maximum, the control relay 121, 122, 123 or 124, as the case may be, will be energized, and nonnal operation of the system will resume.
- the cycle timer sends a signal to line 125 to an overtime timer 126.
- the latter is connected by means of lines 127, 128, 129 and 130 to the respective control relays 121 through 124 to deenergize the particular relay involved.
- a warning device such as an indicator light 131 noties the operator that this continued malfunction exists so that the operator is then advised that the particular motor assembly has a hot bearing which cannot be corrected by flooding with additional lubricant.
- the centralized control system of the present invention thus provides a substantially automatic injection system for the relief of temporary overload conditions.
- a centralized lubrication system for lubricating a plurality of points comprising distributor means arranged for connection to a source of pressurized lubricant and including first delivery means for delivering a predetermined quantity of lubricant to each of said plurality of points in a predetermined sequence, sensor means at each of said points of use for sensing the temperatures thereof, a thermally responsive element in each of said sensor means whose electrical resistance varies as a function of temperature, control means including said thermally responsive element as a current determining element therein, and second delivery means actuated by said control means and responsive to a change in resistance of said thermally responsive element indicative of an excessive temperature condition to deliver amounts of lubricant in excess of said predetermined quantity to the ones of said points in which the temperature is excessive until the temperature thereof is reduced.
- each sensor means includes a thennistor.
- each of said sensor means includes a thermistor, a resistance sensing circuit including a relay having a coil, means for supplying said relay coil with half wave pulses, a gating device connected to said relay coil, means connecting said thermistor to said gating device whereby said relay coil is energized with half wave pulses of opposite polarity from the aforementioned pulses upon energization of the gating device by increased current flow through said thermistor, and indicator means operable by said relay upon energization of said gating device.
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Abstract
Description
Claims (8)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US5105970A | 1970-06-30 | 1970-06-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3674112A true US3674112A (en) | 1972-07-04 |
Family
ID=21969091
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US51059A Expired - Lifetime US3674112A (en) | 1970-06-30 | 1970-06-30 | Centralized lubrication system |
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Cited By (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3856114A (en) * | 1973-01-29 | 1974-12-24 | Kearney & Trecker Corp | Automatic lubrication system |
US4245575A (en) * | 1979-07-16 | 1981-01-20 | Union Special Corporation | Lubrication system for sewing machine |
US4326603A (en) * | 1979-12-17 | 1982-04-27 | International Business Machines Corporation | Lubrication control apparatus |
US4354183A (en) * | 1978-03-13 | 1982-10-12 | Interlube Systems Ltd. | Lubrication monitoring systems |
EP0078420A2 (en) * | 1981-10-29 | 1983-05-11 | KEARNEY & TRECKER CORPORATION | Lubrication system for machine tool or the like |
US4445168A (en) * | 1981-06-24 | 1984-04-24 | Houdaille Industries, Inc. | Apparatus and method for micro-computer control of lubrication system |
US4514123A (en) * | 1981-10-29 | 1985-04-30 | Kearney & Trecker Corporation | Adaptive control system for machine tool or the like |
US4534005A (en) * | 1981-05-14 | 1985-08-06 | Kioritz Corporation | Chain saw |
US4537285A (en) * | 1983-04-11 | 1985-08-27 | Brown Patrick A | Conveyor lubricating apparatus |
US4569562A (en) * | 1982-10-27 | 1986-02-11 | Canon Kabushiki Kaisha | Method of and apparatus for controlling a fluid bearing |
US4632648A (en) * | 1985-06-24 | 1986-12-30 | Goyne Thomas S | Grease pumps |
FR2647182A1 (en) * | 1989-05-22 | 1990-11-23 | Cit Alcatel | DEVICE FOR THE GREASE SUPPLY OF MULTIPLE BEARINGS |
US5020636A (en) * | 1988-07-11 | 1991-06-04 | Siemens Aktiengesellschaft | Piezoelectric lubricating device for a bearing |
US5080195A (en) * | 1988-12-23 | 1992-01-14 | Hitachi, Ltd. | Method of supplying lubricant and apparatus for the same |
US5186398A (en) * | 1982-09-30 | 1993-02-16 | Paul E. Vigneaux, Jr. | Paper shredder |
US5350040A (en) * | 1992-02-12 | 1994-09-27 | Gribble Douglas L | Vibration monitoring lubrication device |
WO1998054473A1 (en) * | 1997-05-31 | 1998-12-03 | Rebs Zentralschmiertechnik Gmbh | Device for distributing a lubricant-air mixture through different lubricating ducts in a machine housing |
US6122966A (en) * | 1996-11-15 | 2000-09-26 | Ue Systems, Inc. | Ultrasonic leak detecting lubrication apparatus and method of use |
US6339961B1 (en) | 1996-11-15 | 2002-01-22 | Ue Systems, Inc. | Ultrasonic detecting lubrication apparatus with acoustically isolated transducer |
US20040055825A1 (en) * | 2001-02-02 | 2004-03-25 | Fuerst Axel Guenter Albert | Method and device for monitoring the operation of a plain bearing |
WO2004027362A1 (en) * | 2002-09-23 | 2004-04-01 | Sikorsky Aircraft Corporation | Bearing overtemperature indicator |
US20090248188A1 (en) * | 2008-03-26 | 2009-10-01 | Haas Automation, Inc. | Smart machine tool lubrication system |
US20100224015A1 (en) * | 2009-03-06 | 2010-09-09 | Kris Paxton | Probe sensor shaft bearing adaptor assembly with conduit attachment |
US20110253480A1 (en) * | 2010-04-16 | 2011-10-20 | U.E. Systems, Inc. | Ultrasonically controllable grease dispensing tool |
US20120199421A1 (en) * | 2009-10-16 | 2012-08-09 | University Of Virginia Patent Foundation | Gas-Expanded Lubricants for Increased Energy Efficiency and Related Method and System |
US20120249079A1 (en) * | 2010-12-07 | 2012-10-04 | Bennett Scott K | Compliant tip thermistor for an energy storage system |
US8844679B2 (en) | 2010-11-29 | 2014-09-30 | Lincoln Industrial Corporation | Pump having venting and non-venting piston return |
US9222618B2 (en) | 2010-11-29 | 2015-12-29 | Lincoln Industrial Corporation | Stepper motor driving a lubrication pump providing uninterrupted lubricant flow |
US9388940B2 (en) | 2010-11-29 | 2016-07-12 | Lincoln Industrial Corporation | Variable speed stepper motor driving a lubrication pump system |
US9671065B2 (en) | 2013-10-17 | 2017-06-06 | Lincoln Industrial Corporation | Pump having wear and wear rate detection |
US10386015B2 (en) * | 2015-03-31 | 2019-08-20 | Aktiebolaget Skf | Lubricating device with a control unit for operating the lubricating pump |
US10969059B2 (en) * | 2017-01-13 | 2021-04-06 | Skf Lubrication Systems Germany Gmbh | Lubricant distribution system and method for its operation |
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US2283638A (en) * | 1940-08-12 | 1942-05-19 | Lincoln Eng Co | Injector |
US2468219A (en) * | 1945-08-14 | 1949-04-26 | Sr Howard H Mathews | Lubrication indicator |
US3381776A (en) * | 1965-06-03 | 1968-05-07 | Eaton Yale & Towne | Solid state timing control for single cycle progressive lubricating systems |
US3487467A (en) * | 1968-07-08 | 1969-12-30 | Eaton Yale & Towne | Thermal electric bearing monitoring system |
US3527322A (en) * | 1968-08-14 | 1970-09-08 | Houdaille Industries Inc | Lubricant distributor control means |
-
1970
- 1970-06-30 US US51059A patent/US3674112A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2283638A (en) * | 1940-08-12 | 1942-05-19 | Lincoln Eng Co | Injector |
US2468219A (en) * | 1945-08-14 | 1949-04-26 | Sr Howard H Mathews | Lubrication indicator |
US3381776A (en) * | 1965-06-03 | 1968-05-07 | Eaton Yale & Towne | Solid state timing control for single cycle progressive lubricating systems |
US3487467A (en) * | 1968-07-08 | 1969-12-30 | Eaton Yale & Towne | Thermal electric bearing monitoring system |
US3527322A (en) * | 1968-08-14 | 1970-09-08 | Houdaille Industries Inc | Lubricant distributor control means |
Cited By (52)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3856114A (en) * | 1973-01-29 | 1974-12-24 | Kearney & Trecker Corp | Automatic lubrication system |
US4354183A (en) * | 1978-03-13 | 1982-10-12 | Interlube Systems Ltd. | Lubrication monitoring systems |
US4245575A (en) * | 1979-07-16 | 1981-01-20 | Union Special Corporation | Lubrication system for sewing machine |
US4326603A (en) * | 1979-12-17 | 1982-04-27 | International Business Machines Corporation | Lubrication control apparatus |
EP0030694B1 (en) * | 1979-12-17 | 1985-03-20 | International Business Machines Corporation | Automatic lubrication system for sliding bearings and guides |
US4534005A (en) * | 1981-05-14 | 1985-08-06 | Kioritz Corporation | Chain saw |
US4445168A (en) * | 1981-06-24 | 1984-04-24 | Houdaille Industries, Inc. | Apparatus and method for micro-computer control of lubrication system |
EP0078420A2 (en) * | 1981-10-29 | 1983-05-11 | KEARNEY & TRECKER CORPORATION | Lubrication system for machine tool or the like |
EP0078420A3 (en) * | 1981-10-29 | 1983-06-08 | Kearney & Trecker Corporation | Lubrication system for machine tool or the like |
US4514123A (en) * | 1981-10-29 | 1985-04-30 | Kearney & Trecker Corporation | Adaptive control system for machine tool or the like |
US4527661A (en) * | 1981-10-29 | 1985-07-09 | Kearney & Trecker Corporation | Adaptive control system for machine tool or the like |
US5186398A (en) * | 1982-09-30 | 1993-02-16 | Paul E. Vigneaux, Jr. | Paper shredder |
US4569562A (en) * | 1982-10-27 | 1986-02-11 | Canon Kabushiki Kaisha | Method of and apparatus for controlling a fluid bearing |
US4537285A (en) * | 1983-04-11 | 1985-08-27 | Brown Patrick A | Conveyor lubricating apparatus |
US4632648A (en) * | 1985-06-24 | 1986-12-30 | Goyne Thomas S | Grease pumps |
US5020636A (en) * | 1988-07-11 | 1991-06-04 | Siemens Aktiengesellschaft | Piezoelectric lubricating device for a bearing |
US5080195A (en) * | 1988-12-23 | 1992-01-14 | Hitachi, Ltd. | Method of supplying lubricant and apparatus for the same |
FR2647182A1 (en) * | 1989-05-22 | 1990-11-23 | Cit Alcatel | DEVICE FOR THE GREASE SUPPLY OF MULTIPLE BEARINGS |
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