For Crosshead Patents (Class 384/11)
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Patent number: 11953000Abstract: A linear drive assembly configured for use within a power end assembly. The linear drive assembly is configured to interconnect a crankshaft and a pony rod and comprises a crosshead assembly attached to a connecting rod assembly. In one or more embodiments disclosed herein, the connecting rod assembly is configured to attach to opposite sides of the crosshead assembly so that no portion of the connecting rod assembly is disposed within an interior of a crosshead included in the crosshead assembly.Type: GrantFiled: April 24, 2023Date of Patent: April 9, 2024Assignee: Kerr Machine Co.Inventors: Kelcy Jake Foster, Micheal Cole Thomas, Christopher Todd Barnett, Nicholas Son, John Keith, Guy J. Lapointe
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Patent number: 9163535Abstract: A system, in certain embodiments, includes a crosshead having a crosshead body, a recess formed in an outer surface of the crosshead body, and a lubricant port extending through the crosshead body from the recess to an aperture of the crosshead, wherein the crosshead is configured to move in a reciprocating motion in a machine.Type: GrantFiled: November 12, 2012Date of Patent: October 20, 2015Assignee: GE Oil & Gas Compression Systems, LLCInventors: Omar M. Kabir, John C. Bartos, Kent Pearl
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Patent number: 8875673Abstract: An improvement to the Waissi type opposed piston internal combustion engine is proposed. The engine has at least one pair of aligned and opposed cylinders with one reciprocating double-headed piston assembly in each cylinder pair. The reciprocating motion of the piston is transmitted to the driveshaft by a rotating crankdisk, which is off-centered mounted to the driveshaft. The high friction metal to metal contact between the crankdisk and the piston contact wall is replaced by a combination of a roll resistance and friction under hydrodynamic conditions resulting to a significantly reduced total resistance between the piston and the crankdisk. This is accomplished by utilizing a bearing ring assembly slidably installed on the annular perimeter surface of the crankdisk. The bearing ring is held in place by a linear U-profile groove, which is casted or machined on each the piston contact slot wall of the integrated piston assembly respectively.Type: GrantFiled: January 15, 2013Date of Patent: November 4, 2014Inventors: Gary Ray Robert Waissi, Robert Waissi
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Publication number: 20140133786Abstract: A system, in certain embodiments, includes a composite crosshead. The composite crosshead comprises a crosshead body made of a first composite material, wherein the first composite material comprises a first reinforcing material distributed in a first matrix material, wherein the composite crosshead is configured to move in a reciprocating motion in a machine.Type: ApplicationFiled: November 12, 2012Publication date: May 15, 2014Applicant: CAMERON INTERNATIONAL CORPORATIONInventors: Omar M. Kabir, John C. Bartos, Kent Pearl
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Publication number: 20100242720Abstract: A reciprocating pump assembly having a crankshaft rotatable by an attached motor and coupled by a connecting rod to a crosshead member. On a side opposite the connection to the connecting rod, the crosshead member connects to a plunger. The plunger is coaxially disposed in a cylinder provided in a cylinder block. Rotating the crankshaft reciprocates the crosshead member and attached plunger. In an embodiment the crosshead member includes an outer shell and a core portion within the shell formed from a material different from the shell material.Type: ApplicationFiled: March 26, 2010Publication date: September 30, 2010Applicant: Weir SPM, Inc.Inventors: Mark D. Matzner, Vladimir Kugelev
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Patent number: 7651273Abstract: There is provided a semispherical shoe which is formed into a substantially semispherical shape by a convex semispherical surface 2 and a flat end surface 3, the semispherical surface having a slidably contacting surface 6 that is in slidable contact with a semispherical concave portion and non slidably contacting surfaces 7 and 8 that are not in slidable contact with the concave portion. When the semispherical shoe is manufactured, first, after a semispherical material having a semispherical surface following the concave portion has been formed, the surface of the portion that is to be the slidably contacting surface on the semispherical surface is quenched to expand the quenched portion from the original surface of the semispherical surface, whereby the sliding surface is formed on the surface of the expanded portion, and the other portions are made the non slidably contacting portions.Type: GrantFiled: August 23, 2005Date of Patent: January 26, 2010Assignee: Taiho Kogyo Co., Ltd.Inventors: Hiroshi Kanemitsu, Masaharu Hatta
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Publication number: 20090175566Abstract: A crosshead bearing is disclosed, in particular for stroke piston machines, including a bearing surface (1) that contains multiple oilways (2), each of which is connected through a rearward borehole (3) to a lubricant source. The goal of the invention is to lower the peak oil pressure at the central load positions (4a, 4b) of the crosshead bearing and thereby achieve an overall load increase. This is achieved according to the invention by having one oilway (2) at each of the opposing central load positions (4a, 4b) of the bearing surface (1) be designated as the main discharge oilway (5).Type: ApplicationFiled: January 7, 2009Publication date: July 9, 2009Inventor: Klaus Hubert Hoff
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Patent number: 6979125Abstract: A rod-guided crosshead assembly for use in a pump or similar machine. The assembly includes a crosshead having a rigid body with a pair of parallel passageways passing from the front to the rear of the body. The body also has a rearwardly opening cavity between the parallel passageways for receiving the ring-shaped link of a crank arm. Further, the body has a transverse aperture intersecting the cavity for receiving a pivot pin capable of passing through the ring-shaped link to pivotally connect the crank arm to the crosshead. The body additionally has a connecting rod extending from the front thereof for connecting to a reciprocating machine part. A conduit connects the parallel passageways and places them in fluid communication with one another. A pair of parallel guide rods extends through the parallel passageways. One of the guide rods is hollow so as to define an elongated aperture therein and has a peripheral groove around its exterior surface.Type: GrantFiled: May 6, 2003Date of Patent: December 27, 2005Assignee: Gardner Denver, Inc.Inventor: Berton L. Vicars
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Publication number: 20040223669Abstract: A rod-guided crosshead assembly for use in a pump or similar machine. The assembly includes a crosshead having a rigid body with a pair of parallel passageways passing from the front to the rear of the body. The body also has a rearwardly opening cavity between the parallel passageways for receiving the ring-shaped link of a crank arm. Further, the body has a transverse aperture intersecting the cavity for receiving a pivot pin capable of passing through the ring-shaped link to pivotally connect the crank arm to the crosshead. The body additionally has a connecting rod extending from the front thereof for connecting to a reciprocating machine part. A conduit connects the parallel passageways and places them in fluid communication with one another. A pair of parallel guide rods extends through the parallel passageways. One of the guide rods is hollow so as to define an elongated aperture therein and has a peripheral groove around its exterior surface.Type: ApplicationFiled: May 6, 2003Publication date: November 11, 2004Inventor: Berton L. Vicars
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Patent number: 5493953Abstract: A cylinder and piston construction for a compressor or vacuum pump has a cylinder defined by co-axial cylinder and guideway sleeves. The guideway sleeve is larger in diameter than the cylinder sleeve and the cylinder sleeve extends axially into the guideway sleeve. A piston has a cylindrical base which is guided via skirt bearings in the guideway and a head which extends from the base into the compression chamber defined by the cylinder sleeve and has a piston ring which forms a sliding seal with the cylinder sleeve. An annular cavity is defined between the piston head and the piston base into which the cylinder sleeve extends so that the top skirt bearing is positioned closer to the top of the piston head and further away from the bottom skirt bearing so as to steadily guide the piston head in the cylinder sleeve, thereby reducing wear and increasing the life of the pump.Type: GrantFiled: November 14, 1994Date of Patent: February 27, 1996Assignee: Thomas Industries Inc.Inventors: John H. Bolthouse, M. Wayne Meece
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Patent number: 5467687Abstract: The piston compressor has at least one cylinder (11) and a piston (10) guided therein in contact-free manner, which is connected via a piston rod (8) to a crosshead (6). The piston rod consists of a pipe (8) extending between the crosshead (6) and the piston (10). In this pipe extends a tension rod (9), which can be extended by means of a hydraulic stretching device (30) and under prestressing pulls the crosshead and the piston towards the pipe.Type: GrantFiled: July 28, 1994Date of Patent: November 21, 1995Assignee: Maschinenfabrik Sulzer Burckhardt AGInventor: Oskar Habegger
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Patent number: 5362154Abstract: Arrangements are disclosed for a highly improved pivoting slipper pad bearing construction offering a reduction in friction, an increase in efficiency and by virtue of their shape and simplicity of form, may be easily and inexpensively produced. Also a superior crosshead mechanism for swashplate engines, pumps and compressors that features a unique lubrication arrangement that assures low friction and long life.Type: GrantFiled: August 16, 1993Date of Patent: November 8, 1994Inventor: Bernard Wiesen
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Patent number: 5247873Abstract: A spherical joint and bearing assembly utilizes a ball and socket arrangement between a connecting rod and a crosshead in a power reciprocating fluid pump. The connecting rod is spherically shaped and is held in a thrust bearing having a matching interior surface. A split retraction ring is held between the rear portion of the sphere and a shoulder in the crosshead. The result is an increased bearing surface and reduction in misalignment.Type: GrantFiled: January 28, 1992Date of Patent: September 28, 1993Assignee: Cooper Industries, Inc.Inventors: John H. Owens, Joseph Spector
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Patent number: 5203219Abstract: A speed reducer, in particular for converting continuous rotary motion of a drive motor to alternating rotary motion of an output shaft for operating a wiper linkage, and a hollow casing, which is closed by a cover with, in the hollow interior of the casing, a toothed wheel carrying a crank pin which is eccentric with respect to the axis of rotation of the toothed wheel, the crank pin being freely rotatable and free to move axially, with the crank pin driving a crank and connecting rod system which converts the continuous rotary motion of the toothed wheel into the alternating motion of the output shaft. The cover has at least one flat sliding thickened portion, of a material having a low coefficient of friction, arranged on its inner face and directed into the hollow interior of the casing.Type: GrantFiled: October 3, 1991Date of Patent: April 20, 1993Assignee: Valeo Systemes d'EssuyageInventor: Pierre Blanchet
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Patent number: 5062311Abstract: A housing, feet therefor, and casings, formed of common, readily available tubular stock, of uniform thickness, are assembled and welded together to define a frame for a crankshaft and crosshead assemblies. The tubular housing has openings in the sides thereof in which to receive the casings, and has apertures, also in sides thereof, in which to journal a crankshaft. The casings include transverse webs with arcuate ways formed therein for slidably supporting crosshead shoes thereon.Type: GrantFiled: March 29, 1991Date of Patent: November 5, 1991Assignee: Dresser-Rand CompanyInventor: Robert A. Bennitt
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Patent number: 5031512Abstract: A crosshead for reciprocating piston machines, in particular reciprocating compressors, wherein the piston rod fixing flange is connected directly to the connecting rod gudgeon pin by clamping screws passing through corresponding holes in the flange and crosshead body and engaging in threaded bores provided in the gudgeon pin, the screws being tightened with a load much higher than the load which the connection has to transmit.Type: GrantFiled: April 10, 1990Date of Patent: July 16, 1991Assignee: Nuovopigone - Industrie Meccaniche E Fonderia S.p.A.Inventor: Franco Graziani
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Patent number: 4872395Abstract: The crosshead has a body formed of solid, metal plate, and of substantially U-shape. It comprises a pair of spaced-apart parallel limbs which are bridged between by an integral transverse member, and the latter is bored through to receive a piston rod therein. Shoe plates are joined to the limbs to guide the body in reciprocation. In the combination with a connecting rod assembly and a piston rod, an end of the piston rod is directly fastened to the connecting rod assembly, and the crosshead is coupled to an intermediate portion of the piston rod.Type: GrantFiled: November 23, 1987Date of Patent: October 10, 1989Assignee: Dresser-Rand CompanyInventors: Robert A. Bennitt, Alan C. Anderson
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Patent number: 4729249Abstract: A reciprocating plunger pump is provided with a power section frame having open sides and vertical load-bearing walls spaced apart along the length of the frame. Separate, individually removable cradles are mounted on both sides of the frame directly to and extending between pairs of vertical walls. The cradles provide guides for linear reciprocating motion of main crossheads, which are attached to connecting rods driven by a rotating crankshaft. The cradles and the vertical walls are load-bearing so that the crankshaft may be rotated in either direction. The individually removable cradles provide easy access to both sides of the power section of the pump for inspection and maintenance of the power section components.Type: GrantFiled: August 25, 1986Date of Patent: March 8, 1988Assignee: Dresser Industries, Inc.Inventor: Dragan Besic