Cranks And Wrist Pins Patents (Class 74/595)
  • Patent number: 9315092
    Abstract: An articulated device includes a rivet assembly for connecting first and second linkage assembly support arms together at common ends thereof. The rivet assembly includes a blind rivet having a rivet sleeve and a mandrel shaft with a mandrel head. The rivet sleeve and the mandrel shaft extend through first and second bearing holes in the common ends with the mandrel head being on the first arm adjacent to the first bearing hole. The rivet sleeve has a rivet sleeve head on the second arm adjacent to the second bearing hole. The rivet assembly includes a bearing sleeve extending between the rivet sleeve and the bearing holes. The bearing sleeve has a collar-type stop and a shoulder-type shaft stop with the collar-type stop lying against the first arm and the shoulder-type shaft stop lying against the mandrel head. The bearing sleeve has a ring-shaped stop adjacent the rivet sleeve head.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: April 19, 2016
    Assignee: Magna Car Top Systems GmbH
    Inventors: Frank Zehnder, Markus Sczuka, Michael Wohlfarth
  • Patent number: 9261131
    Abstract: A crankshaft structure includes a crank pin section, a crank journal section, and a counter weight section arranged between the crank pin section and the crank journal section in a direction of a crankshaft. A crank arm section connecting the crank pin section and the crank journal section is formed with each of lateral edge portions extending substantially along a circumscribed tangential line connecting a base of the crank pin section and a base of the crank journal section when viewed in the direction of the crankshaft. Each of the lateral edge portions of the crank arm section includes an edge groove having a length extending between a central axis of the crank pin section and a central axis of the crank journal section when viewed in a direction to cross the crankshaft. The edge groove has a groove bottom portion formed between two reinforcing ribs.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: February 16, 2016
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Motoki Harada, Tadashi Niino, Mitsuyoshi Kamiya
  • Patent number: 9032839
    Abstract: A crankshaft and method for manufacturing the same are disclosed. The crankshaft may comprise a web and a rod journal disposed adjacent to the web. The rod journal includes a fillet disposed proximal to the web. The fillet includes a tapered undercut having a concave shape with a graduated depth. The undercut is defined by a sweep angle and an offset angle.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: May 19, 2015
    Assignee: Caterpillar Inc.
    Inventor: James Jay Cress
  • Patent number: 8985084
    Abstract: A crankshaft includes a coupling portion, a first functional portion, and a second functional portion. The coupling portion is coupled to a connecting rod. The first functional portion is provided on an upper portion of the crankshaft protruding from a crankcase. The first functional portion drives a first functional component. The second functional portion is provided on a lower portion of the crankshaft protruding from the crankcase. The second functional portion drives a second functional component. The entire crankshaft has been processed by a first treatment to at least enhance the corrosion resistance thereof. At least a coupling portion of the crankshaft has been processed by a second treatment to at least enhance the strength thereof. Neither of the first functional portion and the second functional portion has been processed by the second treatment.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: March 24, 2015
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Makoto Kuroiwa, Isamu Naruse, Satoshi Miyazaki, Hirokazu Kaneko
  • Publication number: 20150000461
    Abstract: A crankshaft and method for manufacturing the same are disclosed. The crankshaft may comprise a web and a rod journal disposed adjacent to the web. The rod journal includes a fillet disposed proximal to the web. The fillet includes a tapered undercut having a concave shape with a graduated depth. The undercut is defined by a sweep angle and an offset angle.
    Type: Application
    Filed: June 26, 2013
    Publication date: January 1, 2015
    Inventor: James Jay Cress
  • Publication number: 20140318310
    Abstract: In a crankshaft 200, one hole 213L formed in a crankpin 213 has a bottom surface having a larger area and a depth from a surface of the crankpin less than those of another hole 213M. In forming the hole 213L and the hole 213M, a preformed product 200 of the crankshaft having a shape smaller than that of a cavity is disposed in a die set and punches are simultaneously inserted into the crankpin 213. By this operation, the hole 213L and the hole 213M are simultaneously formed in each crankpin 213 of the preformed product 200.
    Type: Application
    Filed: July 9, 2014
    Publication date: October 30, 2014
    Inventors: Takayuki Ohnuma, Tsutomu Ando, Yasuhiro Ito
  • Patent number: 8857404
    Abstract: A piston-powered internal explosion engine for providing power output through a rotating crankshaft. The engine includes an engine block having power cylinders for receiving working pistons, bearing means for supporting the crankshaft, and a crankshaft supported within the bearing means having an output end extending outside of the engine block and a plurality of offset power cranks. The engine includes connecting rods operably coupled to the power cranks and configured to transfer power from the working pistons to rotate the crankshaft, and working pistons that are received into the power cylinders and operably coupled to the power cranks. Each working piston has a head end positioned adjacent to a cylinder head to form a compression chamber and is configured to receive power from an explosion of a compressed volume located within the compression chamber, and to transfer the received power to the connecting rods.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: October 14, 2014
    Inventor: Douglas K. Furr
  • Publication number: 20140283782
    Abstract: An apparatus for rotating a crankshaft is described. The crankshaft includes a main shaft and an axially offset crank pin with each end of the crank pin connected to the main shaft by a respective crank arm. The apparatus includes at least a first piston. A connecting frame is attached to the first piston, and the first piston is configured to alternately drive the connecting frame in reciprocating motion. A hub is rotatably mounted within the connecting frame with the hub defining a channel therein, and the crank pin is disposed within the channel. The apparatus also includes a locking mechanism that has a locked state in which the hub is prevented by the locking mechanism from rotating within the connecting frame and has an unlocked state in which the hub may freely rotate within the connecting frame.
    Type: Application
    Filed: March 20, 2013
    Publication date: September 25, 2014
    Inventor: Achim H. HEDRICH
  • Patent number: 8813603
    Abstract: A crank drive has a crankshaft having at least one crank pin having a bearing surface with a concavely curved shape in a longitudinal crankshaft section and a conrod having a big end fitted to the crank pin and having a bearing surface with a convex shape in contact with the concave shape of the bearing surface of the crank pin in a load-bearing area that transmits forces acting between the big end of the conrod and the crank pin when the drive is in use. The shapes of the bearing surfaces are in accordance with the principle of uniformly distributed stresses such that essentially the same equivalent stress is distributed overall in the bearing surfaces in time average.
    Type: Grant
    Filed: April 17, 2008
    Date of Patent: August 26, 2014
    Assignee: Thyssenkrupp Metalurgica Campo Limpo Ltda
    Inventors: Sergio Stefano Guerreiro, Luis Antonio Fonseca Galli, Walter Tavares De Oliveira, Alex De Souza Rodrigues
  • Publication number: 20140182414
    Abstract: There is provided an induction hardening steel excellent in quenching crack resistance. The induction hardening steel of the present embodiment includes, by mass percent, C: 0.35 to 0.6%, Si: at least 0.01% and less than 0.40%, Mn: 1.0 to 2.0%, S: more than 0.010% and at most 0.05%, Cr: 0.01 to 0.5%, Al: 0.001 to 0.05%, N: Ti/3.4 to 0.02%, and Ti: 0.005 to 0.05%, the balance being Fe and impurities, and satisfies the following formula (1): 2S-3Ti<0.040??(1) where, into each element symbol in formula (1), the content (mass %) of the corresponding element is substituted.
    Type: Application
    Filed: July 4, 2012
    Publication date: July 3, 2014
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Kisung Kim, Hiroaki Tahira, Kaori Kawano, Koji Watari
  • Patent number: 8757028
    Abstract: A crankshaft has a receiving platform for catching lubricant dropping from a main bearing assembly. The receiving platform has at least one wall disposed thereon. The wall has one point that is the furthest from the rotational axis of the crankshaft. One channel is defined in the platform and has an inlet disposed close to the point of the wall that is furthest from the rotational axis of the crankshaft. The channel has an outlet in the vicinity of a connecting rod bearing assembly, so that lubricant dropped on the receiving platform will flow to the connecting rod bearing assembly.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: June 24, 2014
    Assignee: BRP US Inc.
    Inventors: George Broughton, Andrew Findlay, John Valek, James E. Macier
  • Patent number: 8720393
    Abstract: An engine structure having a conjugate cam assembly is provided and includes a piston which can be used to push or pulled by the conjugate cam assembly mounted on a camshaft through a connection rod, a roller rocker and two rollers. The conjugate cam assembly has two cams with cam profiles and relative arrangement angle which can be varied according to actual operational desire, so as to vary the ratio of intake/exhaust strokes and the ratio of compression/power strokes. Thus, the combustion efficiency and the exhaustion efficiency can be enhanced. When the camshaft finishes four strokes of an operational cycle, the camshaft only rotates one circle (i.e. 360 degree), so that the rotation speed of the camshaft can be lowered.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: May 13, 2014
    Assignee: National Sun Yat-Sen University
    Inventors: Der-min Tsay, Hsin-pao Chen, Ting-hao Cheng
  • Patent number: 8596240
    Abstract: An integrally cast four-stroke engine mono-block (10) includes integrally cast cylinder block (20), cylinder head (40), and portion of a crankcase (30) including crankcase 10 outboard and inboard walls (89, 90). At least parts of outer and inner bearing bosses (21a, 21b) are integrally cast with the cylinder block (20) with the inner bearing boss (21b) integrally cast in the inboard wall (90). At least one cored out longitudinally extending open valve 15 train chamber (88) is disposed between the outboard wall (89) and the cast cylinder block (20).
    Type: Grant
    Filed: September 25, 2010
    Date of Patent: December 3, 2013
    Inventors: Nagesh Mavinahally, Jay Veerathappa, Pushpa Nagesh Mavinahally
  • Patent number: 8544362
    Abstract: A crankshaft flange protector comprising a cover having a top wall, a bottom wall and a sidewall, the top wall having a recessed portion formed of an interior sidewall and a recessed portion bottom wall sized to correspondingly receive and support the crankshaft flange therein.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: October 1, 2013
    Assignee: SpeedRanger Aviation, LLC
    Inventor: Curtis L. Nielson
  • Patent number: 8539860
    Abstract: A bearing apparatus for including a camshaft, a plurality of cam blocks disposed in an axial direction on the camshaft, a housing member including an arc concave portion, a cap member which is fixed to the housing and includes an arc concave portion, a roller bearing interposed between the arc concave portion of the housing member and the arc concave portion of the cap member so as to rotatably support the camshaft, and annular first and second control rings which are separately provided from the camshaft, and are press-fitted and fixed to an outer surface of the camshaft at opposite side portions of the roller bearing in the axial direction. Surfaces of the first and second rings that face each other are formed as slide surfaces, and the slide surfaces come in contact with opposite side surfaces of at least one of the housing member and the cap member to receive an axial load.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: September 24, 2013
    Assignee: JTEKT Corporation
    Inventor: Yoshitaka Waseda
  • Patent number: 8533946
    Abstract: A crankshaft is cast in a mold to define a plurality of pin bearing journals and a plurality of main bearing journals, at least one of each has a hollow section extending therethrough. A single core is positioned within the mold to form all of the hollow sections. The single core may include a cross-section defining an elliptical shape to form hollow sections having an elliptical cross-sectional shape to further reduce the weight of the crankshaft. The hollow sections are each positioned along a path that minimizes stress within the crankshaft. The path may include a non-linear path relative to a longitudinal axis of the crankshaft or a linear path angled relative to the longitudinal axis to bend or direct the hollow sections away from high stress regions of the crankshaft. The non-circular cross section of the core may spiral about its own axis to maximize mass reduction.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: September 17, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Dale Edward Murrish, Mark Helmle, Keith Hart, Maurice G. Meyer
  • Publication number: 20130187071
    Abstract: A crank for a valve linkage system includes a pin sleeve having a bore for receiving a connecting pin to connect the crank to a link; a shaft sleeve having a bore for receiving a shaft; an arm between the pin bore and shaft sleeve; and a first stiffening rib extending from the shaft sleeve toward the pin bore.
    Type: Application
    Filed: January 20, 2012
    Publication date: July 25, 2013
    Applicant: HAMILTON SUNDSTRAND CORPORATION
    Inventor: Francis P. Marocchini
  • Patent number: 8468910
    Abstract: A filler member to be installed in a crankshaft including a crank web includes: an arm member, extending in a diametrical direction of a crank journal, and a weight member extending in a radial direction of the crank journal. The filler member includes: a fitting member, a connecting member mounted on the bodies. The fitting member is fixed to an outer side face of the crank web. The connecting member is mounted on the bodies to stride the arm member on inner side face of the crank web.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: June 25, 2013
    Assignee: Yamabiko Corporation
    Inventors: Hisato Osawa, Takahiro Yamazaki, Ken Shirai, Yuji Numakunai
  • Publication number: 20130152731
    Abstract: A crankshaft is cast in a mold to define a plurality of pin bearing journals and a plurality of main bearing journals, at least one of each has a hollow section extending therethrough. A single core is positioned within the mold to form all of the hollow sections. The single core may include a cross-section defining an elliptical shape to form hollow sections having an elliptical cross-sectional shape to further reduce the weight of the crankshaft. The hollow sections are each positioned along a path that minimizes stress within the crankshaft. The path may include a non-linear path relative to a longitudinal axis of the crankshaft or a linear path angled relative to the longitudinal axis to bend or direct the hollow sections away from high stress regions of the crankshaft. The non-circular cross section of the core may spiral about its own axis to maximize mass reduction.
    Type: Application
    Filed: May 15, 2012
    Publication date: June 20, 2013
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Dale Edward Murrish, Mark Helmle, Keith Hart, Maurice G. Meyer
  • Publication number: 20130087014
    Abstract: To provide a forged crankshaft having an excellent wear resistance. The forged crankshaft according to the present embodiment includes a non-heat treated steel material. The non-heat treated steel material has a chemical composition which contains, by mass %, C: 0.45 to 0.70%, Si: 0.75 to 1.30%, Mn: 1.00 to 2.00%, S: 0.03 to 0.30%, Cr: 0.05 to 0.30%, Al: 0.005 to 0.050%, and N: 0.005 to 0.020%, the balance being Fe and impurities, and satisfies the following Formula (1): 1.1C+Mn+0.2Cr>2.0 ??(1) where a symbol of each element in Formula (1) is substituted by the content (mass %) of the each element. A matrix of the non-heat treated steel material is a ferrite-pearlite microstructure in which an area ratio of pro-eutectoid ferrite is less than 10% or a pearlite microstructure.
    Type: Application
    Filed: June 13, 2011
    Publication date: April 11, 2013
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Kisung Kim, Hiroaki Tahira, Taketo Maejima
  • Patent number: 8312752
    Abstract: A kinematic system of movement for the clamping/pressing unit of a semifinished piece, that is to say of sheet metal or the like, of panelling machines, the kinematic system comprising a frame on which a presser unit is hinged to a pin and which is free to make angular movements around the pin, the presser unit consisting of elements v fixed to a head supporting the upper presser tool, the presser unit being moved angularly by at least one connecting rod driven by a first lower crank, in which the presser unit is driven by a second upper crank, the first and second crank defining an articulated mechanism, for driving the punch-presser unit, with two degrees of freedom in sequence that can be activated independently or simultaneously.
    Type: Grant
    Filed: September 4, 2006
    Date of Patent: November 20, 2012
    Assignee: Finn-Power Oy
    Inventor: Luigi Patuzzi
  • Publication number: 20120288392
    Abstract: An assembly includes a composite metal-polymer bushing having an outer metal layer with an inner surface, metal particles sintered to the inner surface, a polymer material between the metal particles, a finished interior surface collectively defined by the polymer material and exposed portions of the metal particles, a plurality of interstices formed between the metal particles and the polymer material, and a plurality of ridges defined by the polymer material that protrude above the metal particles. The ridges occupy at least about 8% of the area of a cylindrical reference surface nominally coinciding with the finished interior surface. The assembly also includes a crankshaft having a journal at least partially received within the bushing and supported by the finished interior surface. The journal is polished to a surface finish of about 0.1 microns or less to reduce a wear rate of the bushing.
    Type: Application
    Filed: May 9, 2011
    Publication date: November 15, 2012
    Applicant: TRANE INTERNATIONAL INC.
    Inventors: Michael G. Benco, William E. Lapp, Derrick J. Lepak, Arther L. Butterworth, David Janda, Dennis R. Dorman
  • Publication number: 20120260440
    Abstract: The utility model relates to a technical field of eccentric structure, which is about an eccentric component and a cleaning brush. The eccentric component comprise of: an axle and a cylinder connected coaxially with such axle, a wedge is set eccentrically on a bottom surface of the cylinder. Said wedge has a convex curved cylindrical surface. The utility model can improve the antiwear property of the eccentric component and prolong its service life through the convex cruved cylindrical surface, which applies the force by linear contact onto the driving block on the application end to make it move reciprocatingly.
    Type: Application
    Filed: March 19, 2012
    Publication date: October 18, 2012
    Applicant: TRULY INSTRUMENT LIMITED
    Inventors: Ruiyu HE, Weilin Hu
  • Patent number: 8281764
    Abstract: An internal combustion engine having a piston reciprocating in a cylinder between TDC and BDC positions to influence a drive shaft. The drive shaft is associated with an expandable piston rod extension which in turn attaches to a piston rod to connect the piston with the drive shaft. The piston rod extension's length may increase and decrease in accordance with the angular position of the drive shaft. The increasing and decreasing length is governed by a guide pin which travels within a channel formed by a portion of the engine block. Increasing the length of the piston rod extension during the power phase of the engine increases the available torque of the engine without any alteration of the displacement. The assembly may also include a counterweight, which itself may travel along an eccentric path generally equal and opposite to the eccentric path along which the piston rod extension guide travels.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: October 9, 2012
    Inventor: Onur Gurler
  • Publication number: 20120234270
    Abstract: An engine assembly may include an engine structure and a crankshaft. The engine structure may include an engine block defining a first bank of cylinders defining two cylinders and a second bank of cylinders defining two cylinders forming a V4 arrangement. The crankshaft may include a first crank pin, a second crank pin, a third crank pin and a fourth crank. The fourth crank pin may be rotationally offset from the first crank pin by a first angle of less than two hundred and seventy degrees in the rotational direction of the crankshaft. The second and third crank pins may be located rotationally between the first crank pin and the fourth crank pin in the rotational direction.
    Type: Application
    Filed: March 17, 2011
    Publication date: September 20, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: EDWARD J. KEATING, ROBERT S. MCALPINE, AKRAM R. ZAHDEH, HATEM ZAKARIA ORBAN
  • Publication number: 20120204848
    Abstract: A crankshaft has a receiving platform for catching lubricant dropping from a main bearing assembly. The receiving platform has at least one wall disposed thereon. The wall has one point that is the furthest from the rotational axis of the crankshaft. One channel is defined in the platform and has an inlet disposed close to the point of the wall that is furthest from the rotational axis of the crankshaft. The channel has an outlet in the vicinity of a connecting rod bearing assembly, so that lubricant dropped on the receiving platform will flow to the connecting rod bearing assembly.
    Type: Application
    Filed: December 21, 2011
    Publication date: August 16, 2012
    Applicant: BRP US INC.
    Inventors: George BROUGHTON, Andrew FINDLAY, John VALEK, James E. MACIER
  • Publication number: 20120186444
    Abstract: A wrist pin and method of reducing wear between members thereof, a piston, a connecting rod, and methods of construction thereof are provided. The wrist pin has a first portion extending between opposite ends configured for receipt in piston pin bores and a second portion extending between opposite ends configured for receipt in the pin bores. The second portion is configured for relative movement with the first portion. The piston includes a piston body having axially aligned pin bores, wherein at least one of the pin bores has a feature to prevent relative rotation of a wrist pin member. The connecting rod includes a connecting rod body having small end bore. The small end bore has a contour to allow relative rotation of a first wrist pin member therein and a feature to prevent relative rotation of a second wrist pin member therein.
    Type: Application
    Filed: March 29, 2012
    Publication date: July 26, 2012
    Inventors: Quigmin Yang, Andrew Miller, Frank Zlamal
  • Patent number: 8220434
    Abstract: The Internal-Combustion Engine is set forth, in which when in use there is no lateral component of the force on the piston which is taken up by the slider rolling by the bearings. As a result of this the cylinder compression is improved, power losses on friction are reduced and wear out of the cylinder is decreased. Also due to the absence of the lateral component of the force on the piston, the latter can be made in a relieved version, e.g. without a skirt and with two compressing rings in one groove.
    Type: Grant
    Filed: May 11, 2009
    Date of Patent: July 17, 2012
    Inventor: Tamerlan Mouradov
  • Patent number: 8215280
    Abstract: A four-stroke, piston-powered internal explosion (“IE”) engine for providing power output through a rotating crankshaft. The IE engine includes an engine block having power cylinders formed therein for receiving working pistons, bearing means for supporting the crankshaft, and a crankshaft supported within the bearing means having an output end extending outside of the engine block and a plurality of offset power cranks. The IE engine further includes connecting rods operably coupled to the power cranks and configured to transfer power from the working pistons to rotate the crankshaft, and working pistons that are received into the power cylinders and operably coupled to the power cranks. Each working piston has a head end positioned adjacent to a cylinder head to form a compression chamber and is configured to receive power from an explosion of a compressed volume of air/fuel mixture located within the compression chamber, and to transfer the received power to the connecting rods.
    Type: Grant
    Filed: March 2, 2009
    Date of Patent: July 10, 2012
    Assignee: DF Reserve, LC
    Inventor: Douglas K. Furr
  • Patent number: 8176891
    Abstract: A multi-cylinder engine with a plurality of cylinders may include at least one variable cylinder that performs a power stroke or is deactivated, normal cylinders that perform power strokes at equal rotation intervals, and a control portion that activates or deactivates the at least one variable cylinder according to a predetermined load condition, wherein deactivation position of the at least one variable cylinder is determined based on rotation angle of a crankshaft.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: May 15, 2012
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Byong Young Choi
  • Publication number: 20120048390
    Abstract: Aluminum-based alloys for casting or wrought processing having improved combinations of properties, including improved high temperature strength, are provided. The alloys generally comprise copper, magnesium, silver, and titanium, along with scandium and/or cobalt. Zirconium, zinc, and/or vanadium may also optionally be present in the alloy. When cobalt is present in the alloy, nickel may also optionally be present. Cast and wrought products, as well as methods of making the same using the alloys, are also disclosed.
    Type: Application
    Filed: August 25, 2011
    Publication date: March 1, 2012
    Applicant: SPIRIT AEROSYSTEMS, INC.
    Inventors: Rahbar Nasserrafi, LaVerne L. Waalkes, Gerald E. Hicks, Kevin Obrachta, David E. Jakstis
  • Publication number: 20120024105
    Abstract: In a crankshaft 200, one hole 213L formed in a crankpin 213 has a bottom surface having a larger area and a depth from a surface of the crankpin less than those of another hole 213M. In forming the hole 213L and the hole 213M, a preformed product 200 of the crankshaft having a shape smaller than that of a cavity is disposed in a die set and punches are simultaneously inserted into the crankpin 213. By this operation, the hole 213L and the hole 213M are simultaneously formed in each crankpin 213 of the preformed product 200.
    Type: Application
    Filed: March 10, 2010
    Publication date: February 2, 2012
    Applicant: HONDA MOTOR CO., LTD
    Inventors: Takayuki Ohnuma, Tsutomu Ando, Yasuhiro Ito
  • Publication number: 20120017867
    Abstract: Reciprocating powered driven engine having a piston with multiplier connecting rods, driving multiplier crankshafts. Maximum crankshaft torque output positioned closer to the detonation timing and piston “top dead center” when cylinder above piston volume is at a lower value. Reduced engine friction losses by canceling piston side forces with the use of multiplier crankshafts positioned in offset and mirror image from piston and cylinder center line.
    Type: Application
    Filed: February 16, 2010
    Publication date: January 26, 2012
    Inventor: Hendrikus Johan Swienink
  • Patent number: 8011272
    Abstract: The epicyclical drive incorporates a dual flywheel carrying a pinion in a balanced axially compact assembly. The assembly includes a counterweight for the pinion nested between the flywheels, which also connects the flywheels and transfers loading conditions therebetween, to reduce and distribute torsional and eccentric loading conditions and reduce vibrations. The use of a second flywheel also provides an improved rotary seal capability for keeping out dust, debris and moisture. The drive is adapted for incorporation into a floor of a header of an agricultural harvesting machine for reciprocatingly driving a sickle thereof, advantageously jointly with a mirror image companion drive in a side by side relationship and timed such that forces generated by the reciprocating actions are cancelled.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: September 6, 2011
    Assignee: CNH America LLC
    Inventors: Gary L. Bich, Beau Carlson, David M. DeChristopher
  • Publication number: 20110197705
    Abstract: A single bell crank for a crankshaft of an internal combustion engine or a compressor includes a single bell crank main journal (5, 28, 39) and a crank pin (21, 31, 46), wherein the crank pin (21, 31, 46) is vertical to the single bell crank main journal (5, 28, 39) and extends out, the axis of the crank pin (21, 31, 46) is offset relative to that of the single bell crank main journal (5, 28, 39), the front end of the crank pin (21, 31, 46) is tapered, at least one first positioning half hole (10-1) is provided on the circumference of the end face of the tapered end (9) and can match with a second positioning half hole (10-02) in a crank to form a positioning pin hole.
    Type: Application
    Filed: August 14, 2009
    Publication date: August 18, 2011
    Applicant: BEIJING SINOCEP ENGINE TECHNOLOGY CO., LTD.
    Inventors: Ming Li, Zhengzhong Li
  • Publication number: 20110132138
    Abstract: A nitrocarburized crankshaft member made of a steel that includes C in an amount by weight of 0.25 to 0.32% as a required element and an optional element that may be included, and Fe and inevitable impurities in a remaining portion. The steel-made crankshaft member mainly includes ferrite and perlite, wherein at least a portion of the steel surface thereof having a ferrite surface area of 50% or greater is imparted with a nitrocarburized hard layer. The nitrocarburized hard layer includes a surface compound layer suppressed to a thickness of 10 to 35 ?m, and a nitrogen diffusion zone below the surface compound layer having a diffusion depth of 700 ?m or greater. The steel includes C, Si, Mn, Cu, Ni, and Cr as the required elements and Mo, N, s-Al, and Ti as the optional elements.
    Type: Application
    Filed: December 2, 2010
    Publication date: June 9, 2011
    Applicants: HONDA MOTOR CO., LTD., DAIDO STEEL CO., LTD.
    Inventors: Isamu SAITO, Yoshihiro TAKITANI, Shinichiro KATO, Makoto HOBO, Keiichiro KAMIYA, Takahiro MIYAZAKI, Takashi KANO
  • Publication number: 20100326235
    Abstract: An apparatus (30) for metal forging a crankshaft (100) having a plurality of throws (6, 7, 8, 9) having parallel axes (31, 32, 33, 34) comprises an upper die (40) and a lower die (50) each having cavities defining a negative shape of a corresponding half of the crankshaft (100). The two dies (40, 50) have mating surfaces (62, 63, 64, 65) lying on different parallel planes. A metal forged crankshaft (100) forged by such apparatus (30) comprises a plurality of throws (6, 7, 8, 9) having parallel throw axes (31, 32, 33, 34) lying in a same plane of symmetry (41) and split-lines (17, 18, 19, 20) from the forging process lying in planes (42, 43) substantially orthogonal to said plane of symmetry (41).
    Type: Application
    Filed: February 29, 2008
    Publication date: December 30, 2010
    Applicant: PERKINS ENGINES COMPANY LIMITED
    Inventor: Adam D. Kilbon
  • Patent number: 7827683
    Abstract: A method is provided for cold forming center web or webless tapered piston pins in one forming sequence. The method eliminates secondary operations such as but not limited to machining, annealing, coating and secondary forming. The method includes the steps of cutting a metal rod into a substantially cylindrical slug piece, die extruding the slug piece to form a first cavity in the slug piece, optionally die extruding the slug piece to form a second cavity in the slug piece, piercing the slug piece to form the slug piece into a hollow cylindrical piece, die extruding the hollow cylindrical piece at either end to form a hollow cylindrical piece having a taper on an internal surface of the hollow cylindrical piece at either end.
    Type: Grant
    Filed: August 11, 2006
    Date of Patent: November 9, 2010
    Assignee: Burgess - Norton Mfg. Co., Inc.
    Inventors: Robert Weiss, Stephen Bangs, James Engdahl, Paul Fecteau
  • Patent number: 7748292
    Abstract: A bearing system can reduce the relative velocity between a bearing member and a rotation shaft and a rotating member to decrease a load on the bearing member although the rotation shaft and the rotating member rotate in opposite directions with the bearing member therebetween. The bearing system includes a case and a rotation shaft supported by the case. A rotating member is disposed coaxially outside the rotation shaft and rotates in the direction opposite to that of the rotation shaft. A housing is interposed between the rotation shaft and the rotating member and is fixed to the case. A bearing member that rotatably supports the rotating member is interposed between the housing and the rotating member.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: July 6, 2010
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Yoshihiko Takeuchi
  • Publication number: 20100147013
    Abstract: A rotary compressor, in which formulas Rc<Rm+e and RC?Rs+e are established, when the radius of a main shaft is Rm, the radius of a countershaft is Rs, the radius of a crankshaft is Rc, and the eccentricity is e, a connecting part has a A-periphery which is formed on the counter-eccentric side periphery of the second crankshaft, and a B-periphery formed on the counter-eccentric side periphery of a first crankshaft, and a formula H>L?H?Cr?Cs is established, when the axial direction of the connecting part is L, the axial length of the first roller is H, the axial length of a bevel formed at the inside edge of the first roller is Cr, and the axial direction of a bevel of the second crankshaft is Cs.
    Type: Application
    Filed: February 25, 2010
    Publication date: June 17, 2010
    Applicant: TOSHIBA CARRIER CORPORATION
    Inventor: Takuya Hirayama
  • Publication number: 20100139451
    Abstract: The invention relates to a crankshaft member having high fatigue strength and good bending correctability, and its method of manufacture. The steel made crankshaft member mainly consists of a two-phase structure of ferrite and perlite. The steel includes C, Ni, Mn, and Cr as required elements and Si, Cu, Mo, Ti, V, Nb, Ca, and S as optional elements that may be included, in the amounts of C within the range of 0.20 to 0.50 wt %, Si within the range of 0 to 0.6 wt %, Mn within the range of 0.5 to 1.5 wt %, Cu within the range of 0 to 0.7 wt %, Ni within the range of 0.05 to 1.5 wt %, Cr within the range of 0.05 to 0.45 wt %, and Mo within the range of 0 to 0.5 wt % to satisfy the condition 115?70 C+8 Si+23 Mn+11 Cu+128 Cr+83 Mo?50. A portion of the member surface is provided at least with a hard nitride layer having an average hardness within the range of 300 to 450 HV. Lamellar spacing of the perlite is 0.3 ?m or less.
    Type: Application
    Filed: December 3, 2009
    Publication date: June 10, 2010
    Applicants: HONDA MOTOR CO., LTD., DAIDO STEEL CO., LTD.
    Inventors: Isamu SAITO, Yoshihiro Takitani, Shinichiro Kato, Makoto Hobo, Keiichiro Kamiya, Takahiro Miyazaki, Takashi Kano
  • Publication number: 20100083791
    Abstract: The invention relates to a device comprising a crankshaft (100) and least one conrod (200) having a big end (202) mounted on a crank pin (102) of the crankshaft (100). The crank pin (102) and the big end (201) of the conrod (200) comprise bearing surfaces (108, 202) which are in close contact to one another in a load-bearing area that bear the forces acting between the big end (201) of the conrod and crank pink (102) when the device is operated. According to the invention the bearing surface (108) of the crank pin (102) in its load-bearing area features a concavely curved profile in the longitudinal shaft section and the bearing surface of the big end (201) features a convex profile being in close contact with the concave profile of the crank pin (102).
    Type: Application
    Filed: April 17, 2008
    Publication date: April 8, 2010
    Inventors: Sergio Stefano Guerreiro, Luis Antonio Fonseca Galli, Walter Tavares De Oliveira, Alex De Souza Rodrigues
  • Publication number: 20100064847
    Abstract: A fabricated crankshaft for single and multi-throw crankshafts utilizes roller bearings for achieving energy savings and reducing the size of parts and components with the single throw crankshaft using two throws interconnected by one main bearing pin and one drive end unit connected to each throw and the multi-throw crankshaft including at least two pair of throws, one crank pin interconnecting each pair of throws, a main bearing pin interconnecting both pairs of throws, and a pair of drive end units, with the drive end units and the crank pins, the connecting pins, and main bearing pins being secured to the throws by configurations that include keys and keyways, splines, and left and right hand thread arrangements so that the fabricated crankshaft is adaptable to any number of cylinders required.
    Type: Application
    Filed: September 15, 2008
    Publication date: March 18, 2010
    Inventor: Tom Henderson
  • Publication number: 20090235779
    Abstract: In accordance with certain embodiments, a modular crankshaft features a connection system between modules that features opposed female receptacles. A pin having opposed beveled ends and hydraulic passages with it is inserted into the opposed receptacles. A pair of seals is disposed on the beveled ends and straddles a hydraulic fluid outlet. The crankshaft wall that defines each receptacle is designed to flex in response to applied hydraulic pressure between the seals on the tapered pin portion. A notch at the base of the receptacle in the crankshaft reduces stress concentration and enables the wall defining the crankshaft receptacle to come back when hydraulic pressure through the pin is removed. The opposed crankshaft receptacles are flanged to allow them to be pulled together over the pin. An interference fit results around the pin after the flanges are mated and the hydraulic pressure is removed.
    Type: Application
    Filed: June 5, 2009
    Publication date: September 24, 2009
    Applicant: CAMERON INTERNATIONAL CORPORATION
    Inventors: Omar M. Kabir, Kent Pearl
  • Patent number: 7509890
    Abstract: A crankshaft has a non-homogenous structure is unitarily formed in a powder metallurgy process with at least two different metallic constituents providing dissimilar characteristics at discrete locations of the structure.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: March 31, 2009
    Assignee: International Engine Intellectual Property Company, LLC
    Inventors: John L. Cagney, Donald R. Van Der Moere
  • Publication number: 20090049951
    Abstract: The invention relates to an assembled crankshaft composed of a plurality of crank cheeks which can be connected at one side to a main bearing journal and at the other side to a connecting rod bearing journal. The invention is based on the object of providing a crankshaft which is assembled from a plurality of individual parts, which is simple and quick to mount, which is characterized by a weight reduction and with which satisfactory lubrication of the bearing regions can be provided. According to the invention, the crank cheeks are provided at both sides with a ring-shaped groove for receiving the tubular main bearing journal and connecting rod bearing journal. In addition, the crank cheeks are provided with openings for a sleeve, which sleeves are in each case arranged within the main bearing journal and connecting rod bearing journal and are connected in a form-fitting and/or force-fitting manner to the crank cheeks.
    Type: Application
    Filed: November 10, 2006
    Publication date: February 26, 2009
    Inventors: Roger Budde, Erik Schneider
  • Publication number: 20080302207
    Abstract: A crankshaft, in particular to be developed as part of an internal combustion engine of a motor vehicle, with at least one main bearing for connecting the crankshaft with an engine block, wherein the main bearing is developed at least partly, so that the axial border areas of the main bearing are convexly opposite the mid-section of the main bearing configured between the axial border areas, and/or with at least one large end bearing to connect the crankshaft with a connecting rod, wherein the large end bearing is at least partially developed so that the axial border areas of the large end bearings are convexly opposite the mid-section of the large end bearing, configured between the axial border areas. Through that it is possible to increase the stiffness of the crankshaft, without the need to alter the fittings on the main bearing and/or on the large end bearing.
    Type: Application
    Filed: June 5, 2008
    Publication date: December 11, 2008
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Paul Breidenbach, Frank Hilger
  • Publication number: 20080229877
    Abstract: A crankshaft having a crankpin, a crank journal, and a crank arm for linking the crankpin and the crank journal, includes a pin fillet portion located between the crankpin and the crank arm, and a journal fillet portion located between the crank journal and the crank arm. At least one of the crankpin and the crank journal has a diameter of no less than about 20 mm and no more than about 40 mm. At least one of the pin fillet portion and the journal fillet portion contains a quench-hardened layer having a thickness of no less than about 1 mm and no more than about 2 mm in the vicinity of a surface thereof. The crankpin and the crank journal substantially do not contain any quench-hardened layer having a thickness exceeding about 2 mm in the vicinity of a surface thereof.
    Type: Application
    Filed: March 21, 2008
    Publication date: September 25, 2008
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Shinya IWASAKI, Hiroshi YAMAGATA, Hirotaka KURITA
  • Publication number: 20080168859
    Abstract: Disclosed herein is a hollow-type crankshaft for use in an internal combustion engine and a reciprocal type air compressor, which includes a crankshaft web for connecting a crankshaft journal to a crankshaft pin, the crankshaft comprising: a reinforcing groove portion 4 formed on the outer peripheral surfaces of the crankshaft pin 1 and the crankshaft journal 2, and formed with a slope portion 41 inclined inwardly from both lateral walls of thereof, and a reinforcing member 40 made of metal different from the basic material, the reinforcing member being inserted into, melt-jointed and cast in the reinforcing groove portion 4.
    Type: Application
    Filed: August 7, 2007
    Publication date: July 17, 2008
    Applicant: SAMYOUNG MACHINERY CO., LTD
    Inventor: Geum Tai HAN
  • Publication number: 20080047125
    Abstract: A method is provided for cold forming center web or webless tapered piston pins in one forming sequence. The method eliminates secondary operations such as but not limited to machining, annealing, coating and secondary forming. The method includes the steps of cutting a metal rod into a substantially cylindrical slug piece, die extruding the slug piece to form a first cavity in the slug piece, optionally die extruding the slug piece to form a second cavity in the slug piece, piercing the slug piece to form the slug piece into a hollow cylindrical piece, die extruding the hollow cylindrical piece at either end to form a hollow cylindrical piece having a taper on an internal surface of the hollow cylindrical piece at either end.
    Type: Application
    Filed: August 11, 2006
    Publication date: February 28, 2008
    Inventors: Robert Weiss, Stephen Bangs, James Engdahl, Paul Fecteau