With Casing Or Support For Rotary Shaft Patents (Class 92/147)
  • Patent number: 11635068
    Abstract: A power end assembly includes a crankshaft section, a crosshead section, and a connector section coupled together by one, two, or more sets of stay rods. The power end may include one or more support plates that are coupled to the crankshaft section and/or crosshead section. The crosshead section includes a plurality of individual crosshead frames. The connector section may include a plurality of individual connector plates or may be a unitary connector plate. The power end is configured to be coupled to a fluid end assembly by coupling the fluid end assembly to the connector plates.
    Type: Grant
    Filed: December 14, 2021
    Date of Patent: April 25, 2023
    Assignee: Kerr Machine Co.
    Inventors: Kelcy Jake Foster, Micheal Cole Thomas, Christopher Todd Barnett, Nicholas Son, John Keith, Mark S. Nowell, Guy J. Lapointe, Michael Eugene May
  • Patent number: 11635151
    Abstract: A power end assembly includes a crankshaft section, a crosshead section, and a connector section coupled together by one, two, or more sets of stay rods. The power end may include one or more support plates that are coupled to the crankshaft section and/or crosshead section. The crosshead section includes a plurality of individual crosshead frames. The connector section may include a plurality of individual connector plates or may be a unitary connector plate. The power end is configured to be coupled to a fluid end assembly by coupling the fluid end assembly to the connector plates.
    Type: Grant
    Filed: December 27, 2021
    Date of Patent: April 25, 2023
    Assignee: Kerr Machine Co
    Inventors: Kelcy Jake Foster, Micheal Cole Thomas, Christopher Todd Barnett, Nicholas Son, John Keith, Mark S. Nowell, Guy J. Lapointe, Michael Eugene May
  • Patent number: 8991298
    Abstract: Apparatus for drainage by well points, including a piston pump and a drive motor coupled to the piston pump by means of a transmission and provided with a drive shaft, which transmission is received in a housing and includes at least one crankshaft and a drive rod coupled thereto, the drive rod is coupled by means of a cross-head to a piston rod of the piston pump and the housing forms an oil sump and the transmission further includes an assembly of a worm and a worm wheel co-acting therewith and mounted on the crankshaft and the worm is provided on a worm shaft extending transversely relative to the crankshaft and vertically in operating mode of the apparatus for drainage by well points.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: March 31, 2015
    Assignee: B.B.A. Participaties B.V.
    Inventors: Johannes Bruin, Harmen Bruin
  • Patent number: 8893609
    Abstract: An engine body includes a crankcase with a crank chamber therein, a cylinder block attached to the crankcase, and a breather passage which selectively permits fluid communication between the crank chamber and an area outside of the crank chamber. The engine body includes a one-way valve between the crank chamber and the breather passage, which allows a one-way flow of gases from the crank chamber to the breather passage. The one-way valve is pressure-operated and is operatively attached to a side wall of the engine body proximate a cylinder sleeve. The one-way valve may be mounted in a mounting window in a side wall of the crankcase, and a timing chamber may function as the breather passage. In an illustrative embodiment, the one-way valve includes a base plate having a valve hole formed therein, and a flexible reed valve plate with one end affixed to the base plate.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: November 25, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Masafumi Taki, Hideyuki Tawara, Masaji Narushima, Toru Nishi
  • Patent number: 8701546
    Abstract: A coupling for a pump connects a plunger to a plunger adaptor. The coupling provides a space between an end of the plunger and an end of the adaptor. Upon disconnecting the plunger from the adaptor, the space provides for removal of the plunger from and through a well of the pump.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: April 22, 2014
    Assignee: Gardner Denver Water Jetting Systems, Inc.
    Inventor: Amos Pacht
  • Patent number: 8528462
    Abstract: A coupling for a pump connects a plunger to a plunger adaptor. The coupling provides a space between an end of the plunger and an end of the adaptor. Upon disconnecting the plunger from the adaptor, the space provides for removal of the plunger from and through a well of the pump.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: September 10, 2013
    Assignee: Gardner Denver Water Jetting Systems, Inc.
    Inventor: Amos Pacht
  • Patent number: 8322270
    Abstract: A reciprocating piston machine, such as an air-conditioning compressor for motor vehicles, having a housing, a rotationally drivable shaft, a shaft sealing device, in particular a mechanical shaft seal, at least one radial shaft bearing, especially a radial rolling-contact bearing, and at least one axial shaft bearing, in particular an axial rolling-contact bearing, a bearing sleeve which accommodates at least the radial shaft bearing, being configured within an opening in the housing, extending into the same.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: December 4, 2012
    Assignee: LUK Fahrzeug-Hydraulik GmbH & Co. KG
    Inventor: Jan Hinrichs
  • Publication number: 20120297972
    Abstract: The present invention relates to a subassembly for forming a hydraulic motor after assembly onto an assembly including a shaft, said subassembly including a cover forming a housing element, a multilobe cam, a cylinder block opposite the cam, pistons guided so as to slide radially within the respective cylinders of the cylinder block and bearing on the lobes of the cam, and a valve intended to apply pressurized fluid to said pistons in series, wherein said subassembly includes means for temporarily attaching the cylinder block to the cover and means for accessing an element of the valve through the cover in order to enable, during installation, the angular positioning of said element with respect to the shaft, followed by the attachment thereof to the shaft. The present invention also relates to a method for assembling such a hydrobase.
    Type: Application
    Filed: January 28, 2011
    Publication date: November 29, 2012
    Applicant: Poclain Hydraulics Industrie
    Inventors: Bernard Allart, Cécile Borgnon, Gery Depierre, Hervé Desumeur, Philippe Lucienne, Clément Recoura, Julien Viard
  • Patent number: 8220381
    Abstract: The invention concerns a combined piston-expander compressor comprising a plurality of pistons (3, 14) which are mechanically coupled together by a piston rod (4), as well as a main slide (6), an auxiliary slide (7) and a control valve (9) for control purposes, characterized in that the main slide (6) is formed from a plurality of slide elements that are not interconnected, two outer slide bodies (6a, 6b) being provided. Control pistons (6c) with control edges and simple slide elements (6d) are arranged in a row between the outer slide elements, in the form of a small piston (6a) and a large piston (6b), such that a differential pressure acting on the outer slide elements (6a, 6b) automatically and mechanically holds together the main slide (6).
    Type: Grant
    Filed: October 29, 2005
    Date of Patent: July 17, 2012
    Assignee: Technische Universität Dresden
    Inventor: Jörg Nickl
  • Publication number: 20110138996
    Abstract: An axial piston machine of an inclined axis design includes a housing in which a cylinder drum is disposed. The cylinder drum is rotatably supported on a central journal which is hingedly connected to a drive shaft. The central journal is inserted, in an axially displaceable manner, in a central journal bore formed in the cylinder drum which extends approximately coaxially to the longitudinal axis of the cylinder drum. A compression spring is disposed in central journal bore which bears against an end face facing away from the drive shaft, and loads the cylinder drum against a control disk. A radial groove is formed in central journal, in which an O-ring is accommodated, by way of which the central journal is held in a non-positive manner in the central journal bore when the axial piston machine is assembled and disassembled.
    Type: Application
    Filed: November 8, 2010
    Publication date: June 16, 2011
    Inventor: Njegos Maric-Colic
  • Publication number: 20090126562
    Abstract: The invention concerns a combined piston-expander compressor comprising a plurality of pistons (3, 14) which are mechanically coupled together by a piston rod (4), as well as a main slide (6), an auxiliary slide (7) and a control valve (9) for control purposes, characterised in that the main slide (6) is formed from a plurality of slide elements that are not interconnected, two outer slide bodies (6a, 6b) being provided. Control pistons (6c) with control edges and simple slide elements (6d) are arranged in a row between the outer slide elements, in the form of a small piston (6a) and a large piston (6b), such that a differential pressure acting on the outer slide elements (6a, 6b) automatically and mechanically holds together the main slide (6).
    Type: Application
    Filed: October 29, 2005
    Publication date: May 21, 2009
    Inventor: Jorg Nickl
  • Publication number: 20090016917
    Abstract: A dual rocking piston pump is disclosed which includes a first piston with a first connecting rod eccentrically mounted to a rotor shaft and a second piston with a second connecting rod eccentrically mounted to the rotor shaft. The rotor shaft passes through a first bearing and a second bearing before being connected to a rotor body. The rotor body is disposed within a stator. The first and second bearings and stator are supported by a bracket. The bracket includes a hub which, in turn includes a first end connected to a wall at an opening in the wall. The hub also includes a second end. The first end of the hub supports the first bearing at the wall and the second end of the hub supports the second bearing. Both the first and second bearings are disposed to “in front” of the motor or in front of both the rotor and stator.
    Type: Application
    Filed: April 28, 2008
    Publication date: January 15, 2009
    Applicant: GAST MANUFACTURING, INC.
    Inventor: Troy Smits
  • Publication number: 20080098978
    Abstract: A reinforcement plate for a reciprocating engine that greatly reduces the elastic and plastic deformation of engine block components when the engine is run at high rpm and force is provided which reduces structural fatigue thereby increasing available horsepower. The one piece reinforcement plate ties together the main bearing caps to each other and to the engine block skirt, thereby increasing the rigidity of the main bearing caps and reducing the vibration of the engine. Crankshaft counterweight and crankshaft throw clearance openings, as well as other clearance areas, are provided in the reinforcement plate.
    Type: Application
    Filed: October 31, 2006
    Publication date: May 1, 2008
    Inventor: Timothy D. Oelerich
  • Patent number: 6896495
    Abstract: A reciprocating compressor that includes a cylinder block with a plurality of cylinder bores. A piston is positioned in each bore. Each piston is mounted to move in response to the a crankshaft, causing each piston to reciprocate within the cylinder bore. The compressor further includes a cylinder head which includes bores corresponding to the bores in the cylinder block. The cylinder head includes a suction port in fluid communication with a source of compressible gas and a plurality of suction plenum in the cylinder head. Protrusions or ribs extend into the suction plenum. The cylinder head also includes a discharge plenum in communication with the outlet ports of the valve plate Interposed between the cylinder head and the cylinder block is a valve plate assembly having a discharge valve, and a discharge valve retainer having a pair of radii assembled to the valve plate by snap fitting a cylinder head gasket over the discharge valve and retainer.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: May 24, 2005
    Assignee: Bristol Compressors, Inc.
    Inventors: Benjamin Alan Majerus, Peter Douglas Mantell, Philip Scott Leonard, David Turner Monk, John Richard Walters, Jr.
  • Patent number: 6848890
    Abstract: A pump assembly is provided which comprises a pump housing, an electric motor attached to the pump housing and having a casing and an output shaft that protrudes into the pump housing to drive a pump within the pump housing, the output shaft having at least two supported portions by way of which the output shaft is rotatably supporting on the casing and the housing, respectively, and an elastic device interposed between one of the supported portions and one of the casing and the pump housing for damping radial vibrations of the output shaft.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: February 1, 2005
    Assignee: Hitachi Unisia Automotive, Ltd.
    Inventor: Chiharu Nakazawa
  • Patent number: 6419459
    Abstract: A mounting assembly for mounting a pump to a fluid cylinder comprising a tie rod threaded at one end and providing a second end drivingly engageable with a sleeve-like threaded connection for clamping attachment directly into the cylinder block by the direct thread engagement of the connector internally of the cylinder block. The invention eliminates the requirement of machining a fluid cylinder block to provide engageable flanges and form nut pockets, thereby minimizing fabrication time and costs, while increasing strength, stability and alignment accuracy between pump pony rods and plunger assemblies of fluid cylinders generally of the type used for high pressure industrial applications.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: July 16, 2002
    Assignee: Gardner Denver, Inc.
    Inventor: Ronald Norbert Sibbing
  • Patent number: 6093003
    Abstract: The invention relates to a piston pump with a piston received axially displaceably in a pump bore. To improve the aspiration performance of the piston pump. A cuff with a U-shaped annular cross section is provided, the cuff is inserted into the pump bore surrounding the piston, an outer lip forms a diaphragm, which rests against a wall of the pump bore and is acted upon on its outside with ambient pressure through a venting bore. The cuff is part of a fluid storage element, which makes an additional fluid volume available to the piston pump. The diaphragm acted upon by ambient pressure creates a pumping effect, if a fluid pressure in the fluid storage element drops below ambient pressure in an intake stroke of the piston.
    Type: Grant
    Filed: March 23, 1998
    Date of Patent: July 25, 2000
    Assignee: Robert Bosch GmbH
    Inventors: Manfred Hauser, Ernst-Dieter Schaefer, Wolfgang Schuller, Erwin Sinnl, Peter Lang
  • Patent number: 5839888
    Abstract: A pump system has first and second pumps. Each pump has a housing, which housing has an inboard end and an outboard end. The pumps are arranged so that the inboard ends are adjacent to each other. The inboard ends each have a crankshaft, while the outboard ends each have an output manifold. Each crankshaft is connected to a plunger by way of a connecting rod and a crosshead. The crosshead reciprocates inside of a cylinder. The crosshead has an axis that is coplanar with a rotational axis of the crankshaft. The connecting rod is connected to the crosshead by way of a wrist pin. The wrist pin is offset from the cylinder axis in order to allow the respective pump to be compact in length. The first and second pumps are on a trailer. In the first pump, the wrist pin is offset on one side of the respective cylinder axis, while in the second pump, the wrist pin is offset on the opposite side of the respective cylinder axis.
    Type: Grant
    Filed: March 18, 1997
    Date of Patent: November 24, 1998
    Assignee: Geological Equipment Corp.
    Inventor: Curtis Harrison
  • Patent number: 5839349
    Abstract: A reduced noise radial piston pump with a driving motor for a controlled brake system. The noise reduction is primarily accomplished by locating and orienting the motor/pump bearings with respect to the pump pistons.
    Type: Grant
    Filed: July 19, 1995
    Date of Patent: November 24, 1998
    Assignee: ITT Automotive Europe GmbH
    Inventor: Peter Volz
  • Patent number: 5701799
    Abstract: A rotary actuator (1) comprising a housing (2), which defines a working chamber (3) for actuation with a pressure fluid and having at least partially circular section, a pivoting piston (5) which is arranged sealingly against the inner wall (4) of and rotatable between two end positions in the working chamber, is featured in that the pivoting piston (5) itself is pivotally supported in bearings (16) which are arranged in the housing (2) axially at each side of the working chamber (3), and wherein it comprises means for cooperation with an external rotary shaft, whereby the housing (2) on at least one of its end walls is adapted so as to be contacted against and be fixedly fastened to a corresponding end wall portions of a second rotary actuator housing (2), and whereby these housings are fixable to one another in such a way that the axes (X) of the pivoting pistons of the respective housings are coaxial and that the pivoting pistons thereby are capable of affecting one common outgoing shaft.
    Type: Grant
    Filed: March 28, 1996
    Date of Patent: December 30, 1997
    Assignee: AB Rexroth Mecman
    Inventor: Rune Granberg
  • Patent number: 5687634
    Abstract: A method for making a lightweight cylinder block composed of carbon--carbon is disclosed. The use of carbon--carbon over conventional materials, such as cast iron or aluminum, reduces the weight of the cylinder block and improves thermal efficiency of the internal combustion reciprocating engine. Due to the negligible coefficient of thermal expansion and unique strength at elevated temperatures of carbon--carbon, the piston-to-cylinder wall clearance can be small, especially when the carbon--carbon cylinder block is used in conjunction with a carbon--carbon piston. Use of the carbon--carbon cylinder block has the effect of reducing the weight of other reciprocating engine components allowing the piston to run at higher speeds and improving specific engine performance.
    Type: Grant
    Filed: May 23, 1996
    Date of Patent: November 18, 1997
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Philip O. Ransone
  • Patent number: 5685203
    Abstract: A compressor running gear and method for assembling the running gear. The running gear includes a split housing having a first housing portion having a first wall and a second wall. Each wall includes at least one shoulder and a shroud. The split housing also includes a second housing portion adapted to be mated with the first housing portion, the first and second housing portions together define a housing chamber. The running gear also includes a crank assembly located in the housing chamber. The crank assembly includes first and second bearing carriers which are mounted on a crankshaft. Each of the bearing carriers has at least one arm adapted to be seated on the at least one shoulder.
    Type: Grant
    Filed: December 1, 1995
    Date of Patent: November 11, 1997
    Assignee: Ingersoll-Rand Company
    Inventors: Russell D. Richardson, Rick G. Tatum
  • Patent number: 5638738
    Abstract: An air motor for hoists and the like utilizes opposed pistons interconnected by a rigid yoke having a single pivot link for each piston pair connected to the crank by means of standard press fit bearings which maintain yoke and piston alignment with the crank in oil free operation.
    Type: Grant
    Filed: January 24, 1996
    Date of Patent: June 17, 1997
    Assignee: Ingersoll-Rand Company
    Inventor: Leslie J. Sell
  • Patent number: 5529466
    Abstract: A pumping device is provided for pumping fluid from an inlet to an outlet. The pump comprises a piston reciprocable between an inlet chamber and an outlet chamber, a first valve between the inlet and the inlet chamber and responsive to reciprocation of the piston in a first direction to communicate the inlet to the inlet chamber, and a second valve between the inlet chamber and the outlet chamber responsive to reciprocation of the piston in a second direction to communicate the inlet chamber to the outlet chamber, whereby fluid is received in the inlet chamber when the piston reciprocates in the first direction and pumped from the outlet chamber when the piston reciprocates in either direction. Also provided is a pump assembly for pumping fluid for an anti-lock braking system. The pump assembly is a dual action pump including two pistons which are stroked 90.degree. out of phase with respect to each other by a common drive member.
    Type: Grant
    Filed: September 27, 1994
    Date of Patent: June 25, 1996
    Assignee: Kelsey-Hayes Company
    Inventor: Wendell D. Tackett
  • Patent number: 5494135
    Abstract: A conjugate drive mechanism of a motion converter includes a conjugate driver, which is rotatably mounted on a crankpin, and a bearing conjugate, which is mounted on a linearly movable shuttle. The conjugate drive mechanism is lubricated by supplying lubricating fluid from a pressurized source to an interface between trackable profiles of the bearing conjugate and the conjugate driver. The trackable profiles, which are in continuous conjugating engagement, have equal circumferential lengths.
    Type: Grant
    Filed: October 3, 1994
    Date of Patent: February 27, 1996
    Inventor: Douglas C. Brackett
  • Patent number: 5456159
    Abstract: A device for translating rotary to linear motion and vice versa includes a reciprocating linearly moving shuttle with a central aperture. The aperture has a pair of opposing conjugate bearings protruding towards the center and which capture therebetween a pair of conjugate drivers rotatably mounted to the crankpin of a rotatable crankshaft with the axis of crankshaft rotation perpendicular to the linear path of the shuttle. The conjugate drivers are free to rotate about the crankpin and articulate independently of each other through a selected angular range. When the crankpin, including the conjugate drivers, is inserted into the aperture of the shuttle with the conjugate drivers engaging the racks, motion is transferable between the crankpin and the shuttle through the conjugate drivers.
    Type: Grant
    Filed: October 3, 1994
    Date of Patent: October 10, 1995
    Inventor: Douglas C. Brackett
  • Patent number: 5435232
    Abstract: A reciprocating piston (2) without any skirt is stabilized throughout its reciprocating motion by two or more connecting rods (4) connected between parallel spaced apart small ends (10) and parallel spaced apart crankshafts (5).
    Type: Grant
    Filed: September 2, 1993
    Date of Patent: July 25, 1995
    Inventor: Ian R. Hammerton
  • Patent number: 5419688
    Abstract: An oilless reciprocating air compressor that is mountable on the inside wall of a cargo container. The compressor has a high strength cast metal crank case and a lighter motor housing attached thereto. A special bracket is provided that attaches to both the crank case and the motor housing to support the motor shaft in a horizontal plane and the opposed cylinders of the compressor in a vertical plane adjacent to the wall. Because this compressor mounted inside the container cooling fans and the like are not required, thus lightening the compressor and allowing for a compact unit that can be safely secured to the cargo container wall.
    Type: Grant
    Filed: June 28, 1994
    Date of Patent: May 30, 1995
    Assignee: Carrier Corporation
    Inventors: Edward M. Basinski, Richard L. Martin, M. Wayne Meece, John H. Bolthouse, II
  • Patent number: 5307731
    Abstract: A housing for hydraulic units includes a single cast unitary hollow housing having a continuous side wall extending between opposing forward and rearward walls to form an enclosed housing. Preferably, the continuous side wall includes opposing top and bottom walls, and opposing right and left side walls. A rotary axis is located between the forward and rearward walls, and is generally centered in an opening formed in the forward wall. Access openings are provided in the continuous side wall, transverse to the rotary axis, for installation of components within the housing during assembly.
    Type: Grant
    Filed: November 19, 1992
    Date of Patent: May 3, 1994
    Assignee: Sauer Inc.
    Inventors: Patric N. Chamberlain, Jeffrey C. Hansell
  • Patent number: 5241895
    Abstract: An air-powered actuator having a body with first and second ends, an axially transverse annular bulkhead positioned therebetween, and an output shaft with a splined exterior portion. The body includes first and second end walls with each end wall having a sleeve mounted coaxially within the body about the shaft and projecting axially inward within the body. A piston sleeve is disposed for axial reciprocating movement within the body. The piston sleeve has a pair of piston heads, an outer sleeve, and an inner sleeve. The outer sleeve is mounted coaxially within the body inward of the bulkhead and about the first and second sleeves to define therewith a fluid-tight outer chamber containing the piston heads, each positioned to an opposite side of the bulkhead to define four fluid-tight chambers and to which pressurized air is applied. Also defined is a fluid-tight inner chamber containing lubricating oil. The outer sleeve is attached to the piston heads for reciprocating travel therewith.
    Type: Grant
    Filed: November 13, 1992
    Date of Patent: September 7, 1993
    Inventor: Paul P. Weyer
  • Patent number: 5195420
    Abstract: The crank mechanism of the piston compressor comprises individual crank disks (5), which each support on their outer circumference a rolling bearing (6) for the bearing of a connecting rod (4). The crank disks (5) are pressed together to form a package by means of tensioning bolts (7). The crank case (1) is preferably closed off by a case cover (10), the inside of which is formed as a bearing mount for the crank mechanism. Assembly and disassembly of a crank mechanism of this type is particularly simple and efficient and can be undertaken by personnel who are not specially trained. In addition, special relubrication devices provide simple and error free servicing, and thus greater longevity.
    Type: Grant
    Filed: March 12, 1992
    Date of Patent: March 23, 1993
    Assignee: Fritz Haug AG
    Inventor: Hans Wanner
  • Patent number: 4966067
    Abstract: A mechanism for converting linear displacement of a piston to angular displacement of a shaft by positioning a cam in a recess of a unitary piston which is adapted for positioning by differential fluid forces applied to opposite ends of the piston. To provide a linear displacement drive for a shaft positioned to rotate about an axis perpendicular to the axis of the piston, a cam profile consisting of two symmetrical, opposite and identical involutes is employed.
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: October 30, 1990
    Assignee: Sundstrand Corporation
    Inventors: John Ames, David J. Lang, Richard E. Walsh
  • Patent number: 4913033
    Abstract: A steam engine, which comprises a crankcase frame (1) arranged so as to rest on a foundation, a steam cylinder (25) supported by the crankcase frame, a cylinder bore (28) in the steam cylinder, a reciprocating piston (45) in the cylinder bore (1), a connecting rod (50), connected at one end with the piston by means of a piston rod (46), steam valves on the cylinder, a crankshaft (56) with crank webs (57, 65) supporting a crank pin (63), for the other end of the connecting rod a crank pin (63), and in the crankcase a plurality of crankshaft bearings (8) allowing rotation of the crankshaft.
    Type: Grant
    Filed: January 9, 1989
    Date of Patent: April 3, 1990
    Inventor: Martin Bernas
  • Patent number: 4887514
    Abstract: A housing of a reciprocating gas compressor comprises a partition member separating an upper suction chamber through which gas passes and a lower crankcase chamber in which a crankshaft rotates and which has an oil sump at the bottom. The partition member is imperforate except for sealed openings through which cylinder sleeves and hydraulic fluid lines extend between the chambers. A conduit located on the housing exterior and connected between the chambers performs three functions, namely: enables gas flow in either direction to effect pressure equalization; enables oil to flow by gravity from low points in the upper chamber into the sump; and enables oil mist in the gas flow through the conduit to coalesce on the inner walls of the conduit and flow by gravity into the sump.
    Type: Grant
    Filed: November 18, 1988
    Date of Patent: December 19, 1989
    Assignee: Vilter Manufacturing Corporation
    Inventor: Robert J. Schintgen
  • Patent number: 4846050
    Abstract: A device designed to actuate the positive clutches of gearbox sliding gears following synchronization of the respective pairs of gears. A cylinder mechanism is provided on each sliding plate of the gearbox, as well as solenoid valves which are controlled by an electronic calculator to select and actuate the cylinders. Each cylinder mechanism includes two oppositely acting pistons, each connected to the sliding plate, and each sliding in its own cylinder which also includes a return spring which operates against each piston and which practically eliminates the clearance above the piston as the piston is about to be actuated.
    Type: Grant
    Filed: August 17, 1987
    Date of Patent: July 11, 1989
    Assignee: Renault Vehicules Industriels
    Inventors: Jean P. Sibeud, Gerard Ellenberger
  • Patent number: 4790727
    Abstract: A swashplate air conditioning compressor comprising a two-part compressor housing with a generally cylindrical region and integral end plates, a pair of cylinder blocks disposed in said cylindrical region and defining axially disposed cylinder openings, a centrally disposed swashplate and shaft assembly within the cylinder blocks, and cast refrigerant intake and discharge passages in each end plate that cooperate with valve plate assemblies between the cylinder heads and the end plates.
    Type: Grant
    Filed: September 25, 1987
    Date of Patent: December 13, 1988
    Assignee: Ford Motor Company
    Inventor: Duane F. Steele
  • Patent number: 4771677
    Abstract: The invention relates to an axial piston machine having an oblique disk body (14) arranged in a housing (1) in a torsionally secure manner, having a drive shaft (4), which is mounted in the oblique disk body (14), and having a rotatable cylinder drum (7), which is coupled with the drive shaft (4) and in which a plurality of pistons (9) may be displaced axially in piston bore holes, their piston heads (11) being supported by means of sliding shoes (12) against the oblique surface (13) of the oblique disk body (14). The purpose of the invention is to construct the axial piston machine in such a way as to make possible torsional securement of the oblique disk body (14) which is simple in terms of production techniques and assembly, with a compact constructional form. This is achieved by mounting the oblique disk body (14) with its peripheral surface (16, 17) torsionally secured in a form-locking manner in a recess (19) of the housing (1) shaped to correspond to the peripheral surface (16, 17).
    Type: Grant
    Filed: January 6, 1986
    Date of Patent: September 20, 1988
    Assignee: Hydromatik GmbH
    Inventors: Rolf Rohde, Herbert Kurz
  • Patent number: 4763563
    Abstract: A swash plate (3) incorporated in a swash plate type compressor and comprising a boss (10) typically formed of aluminum material, which is fixedly secured on a drive shaft (2), and a swash plate assembly (11) extending obliquely from the boss (10), which assembly comprises a pair of front and rear contact plates (12) made of iron and brought into contact with a pair of shoes (6) which are accommodated in recesses (15a) of a piston (5), a connecting member (13) made of iron rigidly connecting the pair of contact plates (12), and a filler (14) made of aluminum material which completely fills the internal spaced formed between the contact plates (12).
    Type: Grant
    Filed: November 18, 1987
    Date of Patent: August 16, 1988
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Hayato Ikeda, Masayuki Kurahashi, Fukuo Gomi
  • Patent number: 4756239
    Abstract: An anti-rolling structure for a double headed piston of a disc cam type reciprocative compressor, comprising a cylinder block (1) through which a plurality of pairs of front and rear cylinder bores (4) are provided in parallel to a drive shaft (3) rotatably secured in the center of the cylinder block (1), and a double headed piston (8) slidably inserted in the respective pair of cylinder bores (4) for reciprocation in the longitudinal direction. A disc cam (13) having opposite sinuous surfaces (13') and rotatably accommodated within a cam chamber (5) is fixedly secured to the drive shaft (3), and a pair of front and rear cam rollers (14F, 14R) are arranged between the disc cam (13) and the piston (8) in a slidable and rotatable manner so as to nip the disc cam (13) between both cam rollers (14F, 14R) to transmit the rotation of the disc cam (13) to the piston (8) as a reciprocation in the longitudinal direction thereof.
    Type: Grant
    Filed: November 18, 1987
    Date of Patent: July 12, 1988
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Mitsuhiro Hattori, Katsunori Kawai, Masayuki Tanikawa, Takashi Okamoto
  • Patent number: 4697468
    Abstract: A rotary mechanism for converting a reciprocal linear motion into an oscillating rotary motion with increased torque at the end positions. Two pressurized air cylinders 1,2 co-operate via links 14, 15 with a common lever arm 5 fastened to an output shaft. The cylinders provide an increased torque adjacent to each one of the end positions of the rotary motion.
    Type: Grant
    Filed: November 15, 1985
    Date of Patent: October 6, 1987
    Assignee: Moveco System AB
    Inventor: Gunnar Bergstrand
  • Patent number: 4566370
    Abstract: A piston pump arrangement is provided which includes a drivable crank shaft supported in a crank drive housing for rotational movement. The crank shaft is drivingly connected to horizontally disposed axially reciprocating pump pistons. In order to facilitate driving of the crank shaft from either the right side or the left side to accommodate the available space requirements and driving motor connections, the crank drive housing is provided with fastening support surfaces arranged symmetrically with respect to a plane through the axis of the crank shaft and the axes of the pump pistons. To accommodate attachment of auxiliary aggregates, such as lubricating/cooling circuit mechanisms, fastening points for such aggregates are also arranged symmetrically with respect to the plane of the crank shaft axis and the pump pistons.
    Type: Grant
    Filed: January 17, 1984
    Date of Patent: January 28, 1986
    Assignee: Uraca Pumpenfabrik GmbH & Co. KG
    Inventor: Nabil Hanafi
  • Patent number: 4532855
    Abstract: An improved construction for a thermal engine, particularly a Stirling engine, comprising a two-part drive shaft. One part of the drive shaft contains the swashplate mechanism and is journaled on the engine housing so that the component of force acting on the swashplate which induces bending of the drive shaft is reacted on the housing by the journaling of the one part of the shaft. The second shaft part is separate from but operatively coupled with the first-mentioned shaft part and has its own journal mounting on the housing. The operative coupling in the disclosed embodiment is by means of a spline connection between the two shaft parts which are in coaxial alignment. The second shaft part is journaled on a housing part which is separable from other parts of the housing on which the first shaft part is journaled.
    Type: Grant
    Filed: April 4, 1984
    Date of Patent: August 6, 1985
    Assignee: Stirling Thermal Motors, Inc.
    Inventors: Roelf J. Meijer, Benjamine Ziph, Ted M. Godett
  • Patent number: 4494415
    Abstract: A triplex plunger pump for liquid cryogen service includes a power end frame comprising a casing formed of welded plate sections and elongated tubular members interconnected to form a main bearing support structure which minimizes the transmission of pump reaction forces to the casing outer walls. The power end frame is provided with removable guide sleeves for supporting respective cylindrical crossheads. The sleeves are retained in the power end frame in bores formed in spaced apart support plates. The crank or eccentric shaft is a multipart assembly including a cylindrical shaft having spaced apart splined sections which are interfittingly engaged with splines formed on removable eccentrics. The shaft main support bearings and the eccentric bearings are cylindrical roller bearing assemblies.
    Type: Grant
    Filed: March 25, 1982
    Date of Patent: January 22, 1985
    Assignee: Hydra-Rig, Incorporated
    Inventor: Thomas L. Elliston
  • Patent number: 4423667
    Abstract: A sleeve-type bearing includes an outer sleeve, an inner sleeve, and an oscillation-damping material fixedly disposed between the outer and inner sleeves. It is preferable that such a bearing is used to support a crankshaft of an automotive engine.
    Type: Grant
    Filed: May 5, 1980
    Date of Patent: January 3, 1984
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Yoshimasa Hayashi
  • Patent number: 4409888
    Abstract: A ring gear of a helically splined rotary actuator is separately and independently joined to the outer cylindrical body of the actuator and meshes with the splined piston sleeve of the rotary actuator. The outer cylindrical body is a smooth, continuous body. In one form of the invention, the ring gear is secured to the outer cylindrical body with flush mountings so that the entire body can be slid past end seals of a hollow boom or further outermost cylindrical tube. In a preferred embodiment, the ring gear is loosely joined to the outer cylindrical body so that it can conform to irregularities or tolerance errors in the splines of the piston sleeve and can accommodate bending in the outer cylindrical body or the rotary output shaft due to heavy bending loads on the actuator.
    Type: Grant
    Filed: May 2, 1980
    Date of Patent: October 18, 1983
    Inventor: Paul P. Weyer
  • Patent number: 4304173
    Abstract: A motor and especially a thermal motor has a connecting rod assembly comprising two radial rolling surfaces constituted by pairs of cones, one cone of each pair being fixed while the other is carried by a rotatable inclined seat.With this arrangement the position of the pistons of the motor at the end of their strokes is rigidly controlled and centered.
    Type: Grant
    Filed: September 19, 1978
    Date of Patent: December 8, 1981
    Assignee: Societe Civile de Recherches et d'Etudes de Moteurs a Barillet (S.C.R.E.B.)
    Inventor: Maurice Brille
  • Patent number: 4030404
    Abstract: A device comprising at least three reciprocable piston-shaped bodies, each of which is provided with a drive rod which cooperates, via a drive rod head accommodating sliding bodies, with a plate which is mounted on a rotatable shaft and which can be tilted about a tilting axis which is transverse to the center line of the shaft. The means for tilting the plate are formed by piston-shaped bodies which can rotate with the shaft and which can be adjusted in the direction of the shaft, the first of the said bodies being coupled to the plate on the one side of the tilting axis, the other body being coupled to the plate on the other side of the tilting axis. Each of the said piston-shaped bodies bounds a space whereto pressurized liquid can be applied, the masses of the said piston-shaped bodies also serving for balancing the unbalancing forces occurring during operation.
    Type: Grant
    Filed: August 4, 1975
    Date of Patent: June 21, 1977
    Assignee: U.S. Philips Corporation
    Inventor: Roelf Jan Meijer
  • Patent number: 3975990
    Abstract: A skid-steered vehicle, especially an end loader, having a hydrostatic transmission. The transmission will have a series pump unit comprising two pump sections separated by a midplane porting block. Each pump section includes an axial piston group rotating on a common axis on opposite sides of the block. A pair of arcuate ports in each side of the block circumjacent the axis of rotation are in fluid communication with each piston group. Internal passages within the block include at least one passage communicating with one arcuate port of each pair which crosses from one side of the axis of rotation to the other before reaching an exposed surface of the block. In this manner, the external crossing of hydraulic hoses is eliminated facilitating shorter, more direct hydraulic coupling with associated hydraulic components.
    Type: Grant
    Filed: January 23, 1975
    Date of Patent: August 24, 1976
    Assignee: Clark Equipment Company
    Inventor: Peter B. Kraus