Systems Patents (Class 184/6)
  • Patent number: 5327996
    Abstract: A central swivel joint for optimizing ground adaptation of front machinery of farm tractors has a central beam and a support beam that are rigidly connected to one another to form a constructive unitary part. A support is provided which has a friction bearing in which the support beam is supported. The friction bearing includes a floating bearing and a stationary bearing and is connected to the lubrication system of the motor of the farm tractor for lubrication purposes. The central beam can be in the form of a conventional square beam. Furthermore, the stationary bearing for receiving the axial forces that are exerted onto the central beam is freely accessible as long as the support has not been connected to the oil pan.
    Type: Grant
    Filed: March 26, 1993
    Date of Patent: July 12, 1994
    Assignee: MAN Nutzfahrzeuge AG
    Inventor: Heribert Moller
  • Patent number: 5263552
    Abstract: Apparatus and method for automatically and continuously lubricating a rotary drive of an industrial drive such as a pump, roll, or other driven member is disclosed. The apparatus includes a rotary drive coupling assembly that is connected between an input shaft and an output shaft which drives the driven member. There is an axial bore drilled through the center of an input shaft and a transverse bore which communicates with the axial bore and terminates at an exterior of the input shaft. The shaft coupling assembly preferably comprises a first shaft coupling and a second shaft coupling which are connected by a connecting member. A bridge conduit spans the first shaft coupling and terminates at a manifold which is carried about the connecting member. From the manifold, a plurality of injector valves distribute pressurized lubricant delivered by a timed pressure pump to the shaft couplings. Preferably the shaft couplings comprise universal type joint couplings having a plurality of bearings.
    Type: Grant
    Filed: July 6, 1992
    Date of Patent: November 23, 1993
    Assignee: The Cline Company
    Inventors: David M. Cline, William B. Richmond, Kenneth S. Rice
  • Patent number: 5246087
    Abstract: A device for sealingly transporting medium, for instance lubricating oil, from a source to a receiving station rotatably movable relative thereto, which device comprises: a source for the medium; and a rotation bearing assembly comprising: at least one rotation bearing; means for receiving the medium from the source, transporting thereof through the rotation bearing assembly in at least partially radial direction and for feeding the medium to the receiving station; and mechanical sealing means.
    Type: Grant
    Filed: July 29, 1991
    Date of Patent: September 21, 1993
    Assignee: Hulleman Techniek B.V.
    Inventor: Dirk J. Schipper
  • Patent number: 5235944
    Abstract: A lubrication system for the internal combustion engine of a motorcycle that includes a pump that outputs a constant amount of fluid per cycle of operation and a delivery valve which selectively passes lubricant to the engine or returns lubricant back to the system to vary the amount of lubricant supplied by the lubricant pump. The system is designed so as to self purge air from the system by mounting the lubricant pump and the delivery valve in close proximity to each other and at a lower level than the lubricant storage tank. In addition, the engine is supplied with arrangement to preclude lubricant from draining into the engine through the delivery valve when the engine is not running.
    Type: Grant
    Filed: June 2, 1992
    Date of Patent: August 17, 1993
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Yoshihiko Adachi
  • Patent number: 5232068
    Abstract: A conveyor apparatus includes a drive unit with a drive sprocket assembly of an armored face conveyor having a central drive shaft for rotation within a lubricated bearing. A bearing housing encloses the bearing and includes an array of access ports circumferentially spaced around the perimeter. A split conveyor frame defines semicircular mounting rings for receiving the bearing housing and securely mounting the drive sprocket assembly. A lubricant channel is provided in the surface of one mounting ring, and the surface of the other mounting ring provides a lubricant seal. The lubricant channel aligns with the access ports of the bearing housing, and includes stopper plugs at each end to restrict the lubricant flow. A transfer tube having a lubricant fitting on a first end transversely extends across the conveyor assembly. A lubricant passage in the conveyor frame extends between the lubricant channel and a feed orifice of the transfer tube.
    Type: Grant
    Filed: February 14, 1992
    Date of Patent: August 3, 1993
    Assignee: American Longwall Mining Corporation
    Inventor: Clarence L. Bandy, Jr.
  • Patent number: 5212952
    Abstract: A compact portable electrical generator powered by a gas fueled internal combustion engine. A combined starter and generator is coupled to the engine for starting of the engine and for generating electrical power when the engine is running. The engine includes a lubricating system including lubricant that is supplied from a separately insertable lubricant cartridge and which is pumped by a hose compressing type of pump so as to insure adequate delivery of small amounts of lubricant regardless of the orientation of the unit and also so as to insure that lubricant cannot leak from the system when the unit is not being operated.
    Type: Grant
    Filed: January 29, 1992
    Date of Patent: May 25, 1993
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Yoshiharu Yokoyama, Shigeru Akiyama, Kazuhito Kitano
  • Patent number: 5099955
    Abstract: A lubrication system including a lubricant reservoir connected to a pump assembly which selectively operates in either of two modes of operation. In one mode of operation, the pump assembly provides pressurized lubricant to various lubricant receiving areas. In a second mode of operation, the same pump assembly is used to refill the lubricant reservoir from a lubricant supply source.
    Type: Grant
    Filed: December 5, 1990
    Date of Patent: March 31, 1992
    Assignee: J. I. Case Company
    Inventors: Lyle P. Mangen, Jesse H. Orsborn, Kevin S. Richman
  • Patent number: 4964420
    Abstract: A distributor is connected through a main pipe to a discharge port or discharge ports of a lubricating apparatus. Deaerating valves of the distributor are disposed in connection with at least one of a main pipe flow passage and discharge ports of the distributor.
    Type: Grant
    Filed: November 3, 1989
    Date of Patent: October 23, 1990
    Assignee: Daido Metal Company
    Inventors: Minoru Ichikawa, Kotaro Kashiyama, Tomomitsu Furukawa
  • Patent number: 4947963
    Abstract: Swirl vessel (14) located within oil tank (28) receives return oil (12) and delivers supply oil (10). The vessel is vented (50) to outside the oil tank. Surplus oil continuously drains (36) to the tank (10) interior. Make up oil from the tank is continuously ejected back into the swirl vessel (14) by various make up lines (46, 56, 68, 60) connected to the low pressure zone (49) of swirl inducing nozzles or injectors (18). The apparatus will operate at any attitude.
    Type: Grant
    Filed: May 11, 1989
    Date of Patent: August 14, 1990
    Assignee: United Technologies Corporation
    Inventor: Wilho V. Aho, Jr.
  • Patent number: 4926970
    Abstract: A device is provided for the circulation of fluid through and about the rotary shaft of a rotating piece of equipment. The circulation is induced by a plurality of radially extending passageways from a center bore in the rotor shaft which extend to the external periphery of the shaft. Rotation causes the center of the shaft to be evacuated by pumping action created by the radial slots thereby producing a lowered pressure area producing a circulation path axially along the outside periphery of the shaft in one direction and axially along an internal through bore in the shaft towards the other end containing the radial slots. Bearings for mounting the shaft being disposed about the outer periphery of the shaft are thereby provided with lubrication and a cooling flow of fluids.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: May 22, 1990
    Assignee: Ingersoll-Rand Company
    Inventor: Robert R. Kimberlin
  • Patent number: 4915194
    Abstract: A lubricating system for supplying oil to the bearings of a shaft having a central oil pumping passage open at one end. An oil delivery tube reaches into the oil pumping passage. To achieve a positive transfer of the oil from the oil delivery tube to the inner wall of the oil pumping passage, means are associated with the upper end of the oil delivery tube for bringing the oil onto the inner wall of the oil pumping passage.
    Type: Grant
    Filed: November 1, 1988
    Date of Patent: April 10, 1990
    Assignee: Leybold Heraeus GmbH
    Inventors: Heinrich Englander, Frank Fleischmann, Hans-Peter Kabelitz, Winfried Kaiser, Friedrich Schmaus, Gunter Schutz, Ralf Steffens, Dietrich Urban
  • Patent number: 4911267
    Abstract: An oiler with a drippage preventing device, to jet lubricating oil on a die or workpiece placed in a press machine. A freely inclinable arm is attached to a freely movable stand, and a nozzle is attached to the arm. A compressed-air-driven high-pressure booster pump sucks up lubricating oil from an oil tank and jets it from the nozzle onto the die or workpiece as a fluid under pressure. A drip pan is mounted on the nozzle and is connected to a compressed-air-driven vacuum block, with the vacuum block functioning to withdraw the lubricating oil from the drip pan and into the oil tank so as to recirculate it in the oiler. The pump, vacuum block, oil tank and associated controls can be housed together in a casing.
    Type: Grant
    Filed: August 1, 1988
    Date of Patent: March 27, 1990
    Assignee: Yohwa Trading Co., Ltd.
    Inventors: Hiroshi Matsuda, Eiji Sugahara
  • Patent number: 4898225
    Abstract: In a mold lubricant exhausting apparatus for a knocking-out mechanism to be installed in a press machine, etc., to prevent the knocking-out mechanism from being damaged due to mold lubricant, overflowed a mold, the apparatus has a nozzle (11) disposed at an end thereof in a reserving chamber (2), and an air pump connected to the base end of the nozzle (11) for supplying air to the nozzle (11) for forcibly exhausting the mold lubricant accumulated in the reserving chamber (2).
    Type: Grant
    Filed: November 30, 1988
    Date of Patent: February 6, 1990
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventor: Chieo Urata
  • Patent number: 4898262
    Abstract: A device for lubricating hydrodynamic bearings comprising an oil tank (2) and a pump (1) connected to the bearings (8) through a delivery line (5). The delivery line (5) has a value (9) placed below the oil level in the tank (2) . The valve has a casing with an inlet port (10) and an outlet port (11) end an auxiliary port (14). A movable member (12) with an axial passage (13) is mounted in the casing to take two positions so that in the first position it shuts-off the auxiliary port (14), the port (10) communicating with the port (11) via the passage (13). end in the second positions, it opens the port (14), the outlet port (11) communicating with the tank (2) through the port (14).
    Type: Grant
    Filed: June 29, 1988
    Date of Patent: February 6, 1990
    Assignee: Moskovskoe Nauchno-Proizvod-stennoe Obiedinenie "Biophizpribor"
    Inventors: Boris P. Gorodissky, Jury A. Lotts, Lev N. Veretenov
  • Patent number: 4898207
    Abstract: An oil relief valve for lubrication systems for internal combustion engines comprising a valve body having a hollow cylindrical shape, a valve seat provided at a bottom end of the valve body, a valve plug placed in the seat, a port bored in the seat to bring the oil relief valve into fluid communication with a lubrication line which supplies oil from an oil pump to various engine parts to be lubricated, a spring mounted on top of the valve plug and adapted to urge the plug against the seat to close the port, and slits cut in the valve body and provided to bring the valve in fluid communication with an oil pan. The spring has a free length smaller than the distance of the space defined between the valve plug and the top end of the valve body.
    Type: Grant
    Filed: January 9, 1989
    Date of Patent: February 6, 1990
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Noriyuki Ueki, Shigeru Nishimura
  • Patent number: 4844201
    Abstract: Lubricating oil supplied to the annular antifriction bearing mounting a rotary ring log barker ring on ring-mounting means, and lubricating oil supplied to air seals for a rotary ring log barker annular air plenum chamber is returned to an annular oil-collecting chamber in the inner periphery of the rotary ring. From such oil-collecting chamber oil is scavenged by a stationary scoop tube in the upper portion of the rotary ring-mounting structure and drained by gravity to a reservoir from which it may be pumped for recirculation through the components of the barker requiring lubrication.
    Type: Grant
    Filed: April 29, 1987
    Date of Patent: July 4, 1989
    Assignee: Nicholson Manufacturing Company
    Inventor: Robert T. Ackerman
  • Patent number: 4786264
    Abstract: A stern tube bearing system of contra-rotating propeller includes an inner shaft having a rear propeller and an outer shaft having a front propeller, both shafts being rotated in opposite directions. A shaft center portion of the inner shaft is made hollow, a plurality of oil supply holes are bores radially in the inner shaft so as to pass therethrough perpendicularly to the outer peripheral surface thereof, and a plurality of rows of these oil supply holes are arranged in the longitudinal direction of the inner shaft, whereby seizing of the bearing owing to offset contact at its rear end caused by the propeller being overhung can be prevented.
    Type: Grant
    Filed: November 4, 1986
    Date of Patent: November 22, 1988
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Sadao Asanabe, Kunio Saki, Susumu Matsumoto, Susumu Taniguchi, Shozo Morohoshi, Masatoshi Koda
  • Patent number: 4771864
    Abstract: A lubricating spline joint for providing a viscous damping function includes a first member defining an internal spline, a second member defining an external spline engaged therewith, a seal ring between the members at one end of the splines, and a radially inwardly facing chamber at the other end which is exposed to lubrication fluid. The improvement features an internal barrier for assuring a fixed internal radius R and thus a preselected centrifugal pressure head of the fluid mass in the chamber and about the splines, and a plurality of venting passages located radially outwardly of the radius R for continually exhausting fluid from the splines as a result of centrifugal force so that fresh and/or less aerated fluid is circulated through the splines.
    Type: Grant
    Filed: September 9, 1987
    Date of Patent: September 20, 1988
    Assignee: Caterpillar Inc.
    Inventors: Larry W. Lorimor, Dwight V. Stone, Ronald E. Tomevi
  • Patent number: 4769978
    Abstract: A single constant displacement pump provides lubricant under pressure from an on-board grease reservoir through a two-position valve to a selected group of distribution manifolds mounted on a cotton harvester. Each manifold of the group is connected to a plurality of conduits which lead to harvester row unit lubrication points, such as on the picker bar cam tracks, picker drum drive gears and the lubricant cavity for each of the picker drums. A line from the picker drum cavity opens into and lubricates the drum thrust washer area. The quantity of lubricant to each point is determined primarily by relative conduit resistance, which in turn is controlled by conduit length and cross section so that individual metering valves or pumps for each lubrication point are obviated. Conduits of substantially equal length and cross section are provided for each group of points which are to receive equal amounts of lubricant.
    Type: Grant
    Filed: June 24, 1987
    Date of Patent: September 13, 1988
    Assignee: Deere & Company
    Inventors: Ronald L. Reichen, Bruce L. Hubbard
  • Patent number: 4719768
    Abstract: The machine comprises: a space defined between the needle cylinder and cylinder holder, and in communication with the delivery conduit of a feed pump, delivery ports defined on the needle cylinder for connecting the space to the outside, a collector pan located in the proximity of the needle cylinder base and supplying an oil collecting case in communication with the feed conduit of the cited pump. The delivery conduit is in communication with the cited space through the needle cylinder bearing and the oil collecting case houses the gear train for transmitting the rotary motion to the needle cylinder. The delivery ports are provided on the bottom of the needle cylinder flutes which accommodate the needles and jacks. Thus, thorough and continuous lubrication of the machine main members is achieved.
    Type: Grant
    Filed: December 5, 1985
    Date of Patent: January 19, 1988
    Assignee: LONATI S.p.A.
    Inventor: Francesco Lonati
  • Patent number: 4693282
    Abstract: A weaving machine having a lubricating system for lubricating the surface of picking instrumentalities during the operation of the weaving machine by supplying controlled droplets of lubricant in the amount of 0.01 through 0.05 cc at predetermined intervals and at consistent pressure in the range of from 50 to 300 psi.
    Type: Grant
    Filed: April 22, 1986
    Date of Patent: September 15, 1987
    Inventor: Leonard Campbell
  • Patent number: 4637355
    Abstract: A lubricating system for a two-cycle outboard motor in which lubricant is mixed with the fuel prior to delivery to the fuel bowl of the carburetor in a chamber located externally of the carburetor. The lubricant is supplied by a relatively large storage tank to a relatively smaller delivery tank that is positioned in proximity to the engine. A float operated control device is provided for maintaining an adequate lubricant level in the delivery tank and an arrangement is incorporated for insuring against operation of the pump in response to momentary changes in liquid level in the delivery tank due to inertial effects.
    Type: Grant
    Filed: October 9, 1985
    Date of Patent: January 20, 1987
    Assignees: Sanshin Kogyo Kabushiki Kaisha, Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Rou Odashima
  • Patent number: 4630712
    Abstract: A lubricating system which uses a chain sprocket to determine the precise chain pin location and deliver the lubricant to preselected points along an endless moving chain is disclosed. In accordance with the invention, steel bars or plates are mounted on alternate sprockets or gear teeth such that as the sprocket rotates the steel bars pass in proximity to a magnetic sensing means which creates a signal to energize fastacting solenoid valves so as to cause the lubricant to be delivered through lubricant nozzles positioned in alignment with the links of the chain.
    Type: Grant
    Filed: August 24, 1981
    Date of Patent: December 23, 1986
    Assignee: United States Postal Service
    Inventor: Rex A. Hoseley
  • Patent number: 4616609
    Abstract: To control the viscosity of oil circulating in a forced-oil circulation path of an engine, oil is conducted to a receptacle located, for example, within the oil pan of the engine or in communication with the overflow outlet stub (14) of the oil pump (3), and oil is conducted from this intermediate receptacle, for example in form of a pan (6) in two parallel paths. One of the paths conducts the oil directly to the suction inlet of the pump after, however, having to overcome a static pressure, for example by flowing over an elevated weir, notch, or through an overpressure valve; the other path is through a flow resistance element (7), for example a constricted tube, a lamella package, or the like, and then to the cooling portion of the oil pan, remote from the suction inlet of the pump.
    Type: Grant
    Filed: June 27, 1985
    Date of Patent: October 14, 1986
    Inventors: Otto Munch, Thomas Schibli
  • Patent number: 4520848
    Abstract: In the rapier or gripper weaving machine a rapier or gripper rod is moved to-and-fro by a drive gear or wheel. An oil lubricating device is provided whose spray nozzle opens in the vicinity of the drive gear or wheel. This spray nozzle is connected to a pressure conduit located at the exit or outlet side of a mixing chamber. In the mixing chamber, a predeterminable quantity of oil taken from an oil reservoir can be admixed with a continuously transmitted flow of compressed air. A timer serves for the periodic activation of an oil dosing and injecting device located upstream or forwardly of the mixing chamber. The dosing action controlled by the timer periodically mixes a predetermined volume of oil into the continuous flow of compressed air being supplied to the spray nozzle. The spray nozzle is a molecular atomizing nozzle.
    Type: Grant
    Filed: March 6, 1984
    Date of Patent: June 4, 1985
    Assignee: Aktiengesellschaft Adolph Saurer
    Inventors: Anton Lucian, Kurt Geiger
  • Patent number: 4467892
    Abstract: Microlubrication system to divide and distribute a flow of lubricant automatically to one or more machines needing lubrication. Fail-safe, accurate distribution is provided by diverting flow of lubricant from the distribution system most of the time, allowing lubricant to be distributed only at intervals. When the lubricant is being distributed, it flows at a high enough rate to allow accurate metering and division of flow, but the overall delivery rate is low enough to prevent wasting the lubricant. The system is preferably provided with fail-safe means to ensure lubrication or to shut off the machines to be lubricated in the event lubrication fails and cannot be quickly restored.
    Type: Grant
    Filed: May 8, 1981
    Date of Patent: August 28, 1984
    Inventor: David L. Van de Bogert
  • Patent number: 4464946
    Abstract: In an infinitely variable traction roller transmission with traction rollers arranged between, and in engagement with, opposite toric discs for the transmission of motion therebetween, the traction rollers and the toric discs are axially supported by hydrostatic axial thrust bearings supplied with lubricant by a single high pressure lubricant pump through high pressure lubricant branch conduits each including a flow control orifice to limit the high pressure lubricant supply to each bearing and a low pressure lubricant supply including a pressure reducing valve and having branch conduits to the various bearings with a check valve in each branch conduit to prevent backflow of lubricant from the high pressure branch conduits such that the high load bearings are always supplied with high pressure lubricant and the low load, high speed bearings obtain additional low pressure lubricant which increases the lubricant film thickness in the bearings and thereby greatly reduces shear losses in the high speed bearings.
    Type: Grant
    Filed: January 26, 1983
    Date of Patent: August 14, 1984
    Assignee: Excelermatic Inc.
    Inventor: Charles E. Kraus
  • Patent number: 4444292
    Abstract: A method and apparatus for lubricating a machine is provided. In an embodiment a method is provided for generating pressure in a lubricating liquid and providing said liquid to a lubricating station at predetermined intervals. In another embodiment an apparatus is provided for pressurizing lubricating liquid in a reservoir and directing said liquid to a lubricating station.
    Type: Grant
    Filed: August 12, 1981
    Date of Patent: April 24, 1984
    Assignee: Standard Oil Company (Indiana)
    Inventors: Cloyce L. Brown, Darrell Tanner
  • Patent number: 4212372
    Abstract: An apparatus and system or process for lubrication of conveyor trolleys and similar moving bearing points as found in conveyor chain and associated conveyor equipment. The apparatus includes a wheel positioning locator in the form of a trolley track section having openings through the web and movement controlling cam blocks which engage and orient trolley wheels and chain assuring proper positional location of the bearings adjacent the emission point of lubricant capillaries and in avoidance of damaging contact between capillaries and moving trolleys or chain equipment. One track flange provides support for electrical equipment and limit switches. The other track flange supports the trolley wheels. The lubricating circuit is a constant pressure circulating system from a central storage tank and running to valves, and the valves located at the capillary tubes.
    Type: Grant
    Filed: June 22, 1978
    Date of Patent: July 15, 1980
    Assignee: Molychem, Inc.
    Inventors: William C. Murphy, Lyle G. Myers
  • Patent number: 4196748
    Abstract: Apparatus for the distribution of liquids of varying concentrations including a liquid source, first conduit means, at least one other conduit means and means for supplying diluent to the other conduit means. The first conduit means has an end leading from the liquid source and also has discharge means for distributing liquid from the source. The other conduit means lead from the first conduit means and also has discharge means. The apparatus is particularly useful for distributing lubricants to chain conveyor systems.
    Type: Grant
    Filed: December 16, 1977
    Date of Patent: April 8, 1980
    Assignee: Stauffer Chemical Company
    Inventor: Robert A. Gillespie
  • Patent number: 4191356
    Abstract: An engine mounting base (8) has a first hollow frame portion (34) containing fluid at generally atmospheric pressure, and a second hollow frame portion (36) containing fluid at a preselected pressure above atmospheric pressure. Preferably, the mounting base (8) includes a plurality of elongate tubes (46,48,50,52,56,60,62,64,76) having closed ends and connected together at various elevations to provide a plurality of chambers (54,58,66,77) useful for fluid distribution and collection purposes.
    Type: Grant
    Filed: June 8, 1978
    Date of Patent: March 4, 1980
    Assignee: Caterpillar Tractor Co.
    Inventors: Raymond V. Ashmun, Steven R. Baker, Jerry A. Damerell
  • Patent number: 4174031
    Abstract: A series of conveyor idler roll shafts in end-to-end relation supported by bearings provides a pressurized chamber for the flow of grease or oil to the bearings from a reservoir, which is capable of pumping the lubricant into the axial bore of each shaft. Small, radially directed holes connect the shaft bores to the bearings by providing a restricted passage having across it a suitable pressure drop capable of allowing lubricant to flow in sufficient quantities to each bearing regardless of its distance from the reservoir pressure source. Adjacent shaft ends are connected with a resilient cylindrical tubular coupler to provide the requisite flow passage continuity. A labyrinth seal provides a continuous path for lubricant to flow through the bearings, the seal and ultimately to the exterior of the system, where its appearance is visible and indicative of adequate lubricant flow to each bearing along the shaft assembly.
    Type: Grant
    Filed: March 27, 1978
    Date of Patent: November 13, 1979
    Assignee: Rexnord Inc.
    Inventor: Donald R. MacLeod
  • Patent number: 4153140
    Abstract: Lubrication for a rotary shaft positioned within the upper region of a blast furnace is accomplished by mounting a mechanically actuated pump for rotation with a reduction gear box through which the rotatable shaft is driven. The pump is periodically operated by means of an adjustable cam plate mounted on a sector gear which is affixed to the rotatable shaft; torque being transmitted to the shaft via the sector gear which is driven by a pinion coupled to the reduction gearing.
    Type: Grant
    Filed: July 25, 1977
    Date of Patent: May 8, 1979
    Assignee: S.A. des Anciens Etablissements Paul Wurth
    Inventors: Rene N. Mahr, Giovanni Cimenti
  • Patent number: 4121694
    Abstract: The embodiment of the invention disclosed is a conveyor roll having a cylindrical shell with integral end caps and axial sleeves extending inwardly from the end caps. The shell, end caps and sleeves are rotatably journalled about the shaft by roller bearings between the sleeves and the shaft. An internal labyrinth is provided in each sleeve between the bearing and the end of the shell, this internal labyrinth including a rotatable collar and a non-rotatable bushing carried respectively by the shell and shaft and having a series of facing cylindrical and annular surfaces providing a labyrinthine passageway of restricted cross-section extending from the bearing means to an annular outlet at the end of the shell. An external labyrinth is provided outside the end cap. This includes first and second annular flanges carried respectively by the shaft and shell and axially spaced from the annular outlet and from one another. These two flanges provide inner and outer radial passages.
    Type: Grant
    Filed: October 28, 1975
    Date of Patent: October 24, 1978
    Assignee: New River Manufacturing Company, Inc.
    Inventor: Robert C. Nelson
  • Patent number: 4113060
    Abstract: An annular lubrication reservoir is mounted on the periphery of a rotatable shaft, the reservoir defining a fluid tight annular enclosure having one or more apertures through its surface. Conduit means are connected to the apertures for conducting lubrication from the reservoir to a bearing surface. Valve means are mounted adjacent the aperture to limit the lubricant flow to one direction, out of the reservoir toward the bearing surface. A piston pump is mounted in association with the apertures whereby on rotation of the shaft the piston is driven radially outward to force lubricant out of the reservoir through the valve and into the conduit.
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: September 12, 1978
    Inventor: Roy B. Smith
  • Patent number: 4080788
    Abstract: An improved dividing assembly, useful in dividing the high pressure gas system from the lubricating system in a regenerative type Stirling engine, is disclosed. The closed thermally cycled gas system of a Stirling engine may vary between 20-200 atmospheres which complicates sealing and separation problems between fluid systems in the engine. One interface between said fluid occurs at the piston rods which reciprocate between an oil flushed environment within the driven assembly and the pure high pressure gas environment of the thermal cycling assembling. The two systems must be separated and yet allow access of each system to said rods. A piston rod sealing assembly is employed which uses a bleed of high pressure gas to (a) assist in forcing a tighter wiping of the piston rod surfaces, and (b) to convey wiped oil as a mixture away from the sealing assembly. A separator assembly is employed to reclaim substantially pure gas from said mixture and return separated oil to the oil system.
    Type: Grant
    Filed: July 6, 1976
    Date of Patent: March 28, 1978
    Assignee: Ford Motor Company
    Inventor: Don B. Kantz
  • Patent number: 4035113
    Abstract: A rotary fluid pressure device of the type including agerotor gear set having an externally-toothed rotor orbiting and rotating within an internally-toothed stator. An intermediate shaft has one end in splined engagement with the rotor and the other end defining a large set of internal splines. The device includes an output shaft assembly, also defining a large set of internal splines. A large dogbone shaft having external splines at each end transmits torque between the intermediate shaft and the output shaft assembly. The intermediate shaft has an axial bore which communicates pressurized lubricant to the one end of the dogbone shaft, a portion of the pressurized lubricant flowing radially outward over the end of the dogbone and through the spline connection between the dogbone and the intermediate shaft.
    Type: Grant
    Filed: January 30, 1976
    Date of Patent: July 12, 1977
    Assignee: Eaton Corporation
    Inventor: Hugh L. McDermott
  • Patent number: 4019718
    Abstract: A winch includes hydraulically operated brake and clutch means which comprise part of a drive train supported by and located within a cavity defined by a housing. The drive train includes an output shaft located as the uppermost shaft of the drive train and including a portion extending through a wall of the cavity and axially into one end of a hollow, open-ended cable drum located exteriorly of the cavity and having one end rotatably mounted in a wall of the housing and having its other end rotatably mounted on the output shaft. Coupled to hydraulic fluid circuitry for conveying operating fluid to the brake and clutch means is a lubrication fluid circuit for supplying lubricating fluid to bearings supporting the cable drum and to bearings and other components of the drive train, the lubrication fluid circuit including the interior of the cable drum.
    Type: Grant
    Filed: May 5, 1975
    Date of Patent: April 26, 1977
    Assignee: Deere & Company
    Inventor: Thomas William Freiburger
  • Patent number: 4018304
    Abstract: A lubrication system for a centrifugal liquid processing apparatus or the like having a bearing subject to operation in a centrifugal force field includes a reservoir wherein a quantity of fluid lubricant to be applied to the bearing is contained, an accumulator for receiving lubricant from the bearing, a first flow path from the reservoir through the bearing to the accumulator, and a second flow path from the accumulator to the reservoir. During operation of the apparatus lubricant is forced by the centrifugal force field to flow along the first flow path from the reservoir, through the bearing and into the accumulator under pressure. When the apparatus is stopped, lubricant is forced to return from the accumulator along the second flow path to the reservoir. An orifice is provided in the first flow path to control the flow and pressure of the lubricant within the bearing, and check valves are provided to restrict the lubricant to a circulating route through the bearing.
    Type: Grant
    Filed: October 8, 1975
    Date of Patent: April 19, 1977
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: Houshang Lolachi, Herbert Goldsmith
  • Patent number: 4005580
    Abstract: The invention is a system and method for sealing about a shaft employed for conveying power between the interior of a working chamber having working fluid under high pressure, and the exterior of such chamber. The working fluid is sealed from escape along the shaft by interposing a liquid lubricated seal to sustain substantially all of the pressure differential, and between the working chamber and the lubricated seal interposing a second seal employing a sealing fluid which is preferably gaseous at the temperatures and pressures to which it is subjected. This second seal fluid is not significantly soluble in the first seal fluid used in the lubricated seal and is compatible with the working fluid used in the working chamber.
    Type: Grant
    Filed: June 12, 1975
    Date of Patent: February 1, 1977
    Inventor: Judson S. Swearingen
  • Patent number: 3993164
    Abstract: A bearing arrangement and lubricant supply system for rotating machines, illustrated as embodied in a vacuum pump of the liquid vortex type comprises a stationary hollow shaft on which is mounted the rotor of the pump. The rotor includes a hollow shaft concentrically mounted about the stationary shaft on bearings near the ends thereof. Oil under pressure is supplied to the interior of the stationary shaft and from there to the annular space between the shafts. The stationary shaft is provided with inlet and discharge portions and the oil from the annular space is discharged through the discharge portion. The high pressure is maintained within the bearing spacer and throughout the spacer with the shafts. The rotor in effect floats on the lubricant and the volume of oil under pressure acts somewhat as a shock absorber and minimizes shock or unbalance occurring during operation of the pump.
    Type: Grant
    Filed: August 12, 1974
    Date of Patent: November 23, 1976
    Inventor: Kenard D. Brown
  • Patent number: 3960243
    Abstract: A series of flexible, substantially cylindrical tubes communicates with the hollow central shafts of adjacent idler rolls so that lubrication introduced through a grease fitting at one end of the idler roll assembly can be distributed evenly to all of the rolls. Each tube is secured in position by insertion of its opposite ends into the adjacent ends of the hollow shafts of the idler rolls. Conventionally, such shafts are counterbored and tapped at each end and thus require a thicker material shell with a smaller bore to suit the tap size; thus requiring more material and cost.
    Type: Grant
    Filed: May 7, 1975
    Date of Patent: June 1, 1976
    Assignee: Litton Systems, Inc.
    Inventor: Daniel Joseph Di Antonio