Segmented Piston Ring Patents (Class 277/493)
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Patent number: 10605311Abstract: An interference apparatus is provided for a motor shaft transmission assembly. The interference apparatus may include split-ring shells and a retaining device. The interference apparatus may be mounted to an intermediate sleeve of the motor shaft transmission assembly. The interference apparatus is configured to prevent the loss of certain motor shaft transmission assembly components downhole in the event of a failure of the motor transmission due to dynamic loads.Type: GrantFiled: January 28, 2015Date of Patent: March 31, 2020Assignee: Halliburton Energy Service, Inc.Inventors: Steven W. Park, Geoffrey A. Samuel, Steven Graham Bell
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Patent number: 10359002Abstract: The present disclosure provides an open-faced piston with a circumferential groove into which a piston ring assembly is arranged. Openings at the bottom of the circumferential groove and between a front land of the open-faced piston and the piston face are provided. The openings are arranged to allow for a combustion reaction to propagate through the volume defined between the bottom of the piston ring assembly and the piston face such that at least a portion of an air and fuel mixture located in that volume is reacted.Type: GrantFiled: November 21, 2017Date of Patent: July 23, 2019Assignee: EtaGen, Inc.Inventor: Matt Svrcek
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Patent number: 9334830Abstract: A power cylinder system for a reciprocating engine includes a piston configured to be disposed within a cylinder and to move in a reciprocating manner within the cylinder. The piston also includes a top-most groove extending circumferentially about the piston beneath a top land of the piston and a ring disposed within the top-most groove. A single channel is formed in the top land or the ring, and the single channel extends from an outer perimeter of the piston to a space between an inner surface of the top-most groove and an inner face of the ring.Type: GrantFiled: June 6, 2014Date of Patent: May 10, 2016Assignee: General Electric CompanyInventor: Richard John Donahue
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Patent number: 8857820Abstract: A piston ring, in particular a compression piston ring, includes a running surface, upper and lower flank areas, an inner peripheral area and a joint. The wall thickness of the piston ring is uniform over its periphery and at least the running surface is provided with a PVD coating or a CVD layer in such a manner that the running surface layer has a lesser layer thickness in the peripheral area close to the joint than in the remaining peripheral area of the running surface.Type: GrantFiled: October 14, 2010Date of Patent: October 14, 2014Assignee: Federal-Mogul Burscheid GmbHInventors: Christian Herbst-Dederichs, Peter-Klaus Esser, Ralf Lammers, Sebastian Bresinski
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Patent number: 8348280Abstract: A seal apparatus including at least first and second adjacent seal segments, each including an elongate body with ends defined at opposing elongate body ends, to be arranged such that an end of the first seal segment joins with a complementary end of the second seal segment, the end of the first seal segment including a first male component protruding from a plane of a first seal surface to define a first female mating section about the first male component, the end of the second seal segment including a second male component protruding from a plane of a second seal surface to define a second female mating section about the second male component, the first and second male components being receivable in the second and first female mating sections, respectively, to form first and second male component overlaps in at least two dimensions.Type: GrantFiled: October 22, 2010Date of Patent: January 8, 2013Assignee: General Electric CompanyInventors: Vishwas Kumar Pandey, Upendra Prabhu Nath Vemula Gopinath, Bhaskar Mani, Donkada Santhosh
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Patent number: 7997584Abstract: A piston ring for the piston of an internal combustion engine, comprising, on a lower side of the piston ring, a circular, radially inner bezel, the width thereof reducing, on both sides of the ring stop, up to the side of the piston ring that is opposite the ring stop, in a symmetrical manner in relation to a radially situated axis and runs through the ring stop, and the bezel on the lower side of the piston ring is arranged away from the piston base. A good oil-scraping effect of the piston ring is obtained over the entire periphery of the inner wall of the cylinder.Type: GrantFiled: June 13, 2008Date of Patent: August 16, 2011Assignee: MAHLE International GmbHInventors: Tino Gallas, Klaus Koeble, Leandro Mileo Martins
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Publication number: 20090179386Abstract: Gastight piston ring arrangements require an active seal in the axial and radial directions in order to be able to obtain a high sealing effect. At the same time, the piston ring arrangement, while maintaining the sealing effect both on the sealing surface and between the parts of the piston ring arrangement, must be capable of readjustment in the event of continued wear. For a segmented piston ring comprising piston ring segments 2 having stepped ends 5, 6, this is achieved according to the invention by the fact that on at least one piston ring segment 2, on the radially inner peripheral surface 9 over a part of the width of the piston ring segment 2, a radial step 4 is provided, and a single-cut sealing ring 3 is provided, which bears radially against the inside of the peripheral surface 9 of the piston ring segments 2, and on the sealing ring 3 an axial recess 10, 12 is provided, which cooperates with the radial step 4 of the piston ring segment 2.Type: ApplicationFiled: January 7, 2009Publication date: July 16, 2009Inventors: Tino Lindner-Silwester, Christian Hold, Martin Molnar
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Publication number: 20080309021Abstract: A packing seal for the piston of a reciprocating engine can be inserted into a circumferential groove of the piston and is provided with three segment rings that adjoin each other in an axial direction, i.e. a second (lower) segment ring, a first (top) segment ring thereabove, and a conical pressure securing ring above the first segment ring. The second (lower) segment ring is characterized in that the ends of the seal segments and the lock parts which adjoin each other in the peripheral direction radially engage behind one another in a hook-like manner, the seal segments being provided with an inward-pointing hook and the lock parts being equipped with an outward-pointing hook.Type: ApplicationFiled: May 18, 2006Publication date: December 18, 2008Inventor: Hans Helpap
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Patent number: 6976399Abstract: A wiper ring to be applied to a nut of a ball screw having a screw shaft comprises a plurality of segments each constituted as independent element having a seal portion to be contacted to the screw shaft, support pins extending in an axial direction of the screw shaft so as to correspond to the segments, respectively, the segments being arranged in a circumferential direction of the screw shaft to be rotatable about the pins, the pins being connected to each other through support members so as to limit the relative movement of the respective pins, and a spring member for urging the segments arranged circumferential direction of the screw shaft so as to be directed towards radially central side of the screw shaft.Type: GrantFiled: March 30, 2004Date of Patent: December 20, 2005Assignee: THK Co., LTDInventors: Hidekazu Michioka, Katsuya Iida, Tetsuhiro Nishide
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Patent number: 6793222Abstract: An oil scraper piston ring includes an inner circumferential surface; an outer circumferential surface adapted to contact and slide along an inner wall of an engine cylinder; a radial wall thickness defined by a radial distance between the inner and outer circumferential surfaces; and a plurality of circumferentially distributed recesses each extending radially from the inner circumferential surface toward the outer circumferential surface to reduce the radial wall thickness. Each recess has a first recess region open at the inner circumferential surface and extending radially toward the outer circumferential surface and a second recess region merging into the first recess region. The two recess regions have different shapes, and the area of the second recess region is larger than the area of the first recess region.Type: GrantFiled: August 27, 2001Date of Patent: September 21, 2004Assignee: Federal-Mogul Burscheid GmbHInventors: Evangelos Katsaounis, Mario Solia
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Patent number: 6712363Abstract: A sealing method and method according to which a first and second ring are each provided with split ends, and an arcuate lip extends from one end portion of the each ring and in an axial direction relative to the ring and projects outwardly from the face of the ring. The rings are disposed in an interlocking relationship with the second portion of the lip of the first ring extending within, and in a closely spaced relation to, the corresponding inner surface of the second ring; and with the second portion of each lip of the second ring extending within, and in a closely spaced relation to, the corresponding inner surface of the first ring.Type: GrantFiled: January 8, 2002Date of Patent: March 30, 2004Assignee: Dresser-Rand CompanyInventors: Robert A. Bennitt, Larry A. Schnautz
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Publication number: 20030127802Abstract: A sealing method and method according to which a first and second ring are each provided with split ends, and an arcuate lip extends from one end portion of the each ring and in an axial direction relative to the ring and projects outwardly from the face of the ring. The rings are disposed in an interlocking relationship with the second portion of the lip of the first ring extending within, and in a closely spaced relation to, the corresponding inner surface of the second ring; and with the second portion of each lip of the second ring extending within, and in a closely spaced relation to, the corresponding inner surface of the first ring.Type: ApplicationFiled: January 8, 2002Publication date: July 10, 2003Applicant: Dresser-Rand CompanyInventors: Robert A. Bennitt, Larry A. Schnautz, Donna A. Schnautz
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Patent number: 6457722Abstract: A sealing element for dry running systems has a segmented sealing ring (2) which comprises at least two ring segments (21) which are arranged adjacently in its peripheral direction, with two adjacent ring segments (21) each contacting one another in the assembled state along an intersection line (22) which subtends an intersection angle (&agr;) which is different from 90° to a tangent (23) at the inner jacket surface (24) of the sealing ring (2). The sealing ring (2) has an axial height (H1) which amounts to at most 5.5 mm, in particular to between 2 mm and 4.5 mm.Type: GrantFiled: November 29, 1999Date of Patent: October 1, 2002Assignee: Maschinenfabrik Sulzer-BurckhardtInventor: Norbert Feistel
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Patent number: 6378875Abstract: The invention relates to a sealing ring for sealing a piston rod of a piston compressor. The sealing ring comprises three segments, wherein the segments have portions extending in the circumferential direction of the sealing ring, which form an overlapping joint. The overlapping joint brings about an excellent sealing effect in the axial direction.Type: GrantFiled: December 12, 1997Date of Patent: April 30, 2002Assignee: Maschinenfabrik Sulzer-Burckhardt AGInventor: Norbert Feistel
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Patent number: 6367805Abstract: In a stripping arrangement for preventing liquid from penetrating at the peripheral gap (1) between a reciprocating component (2) and a casing opening (3) surrounding the latter, a choke ring (8) is provided on the side facing the inlet of the liquid to be stripped in the stripping bushing (4) in addition to at least one stripping ring (5) arranged in a stripping bushing (4), wherein this choke ring is designed with a smooth annular surface (9) on its front side facing the inlet of the liquid, and adheres to the smooth inner front surface (10) of the stripping bushing (4) facing it, exposed to the adhesive forces (S1) in the liquid. In this way, a significant path of entry for the liquid to be stripped into the stripping bushing (4) is blocked, so that the stripping ring (5) has to strip substantially less liquid from the reciprocating component (2).Type: GrantFiled: May 31, 2000Date of Patent: April 9, 2002Assignee: Hoerbiger Ventilwerke GmbHInventors: Christopher D. Radcliffe, Jonathan G. White
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Patent number: 6286837Abstract: A set of piston rod packing rings for use in each of the packing cups of a gas compressor is disclosed. The packing ring set includes segmented first and second rings constructed of a material such as plastic, nylon, Teflon or bronze. The segments of the first ring have a plurality of opposing ends, each of which plurality preferably forms a radial cut butt joint. The segments of the second ring also have a plurality of opposing ends, each of which plurality preferably forms a butt/tangent joint. The second ring is disposed next to and on a low pressure side of the first ring as measured during a compressor piston rod compression stroke. The packing ring set also includes a third uncut ring constructed of a compressible, non-metallic material and a fourth uncut, anti-extrusion ring constructed of a relatively less compressible material than the third ring such as cast iron, bronze or hard plastic.Type: GrantFiled: August 24, 1999Date of Patent: September 11, 2001Assignee: Delaware Capital Formation, Inc.Inventor: Joseph R. Humphrey
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Patent number: 6193236Abstract: A packing seal is provided which is intended in particular for reciprocating piston engines and which can be placed into a circumferential groove of a piston of such a reciprocating piston engine. The packing seal includes a first segment ring (1), which has at least two sealing segments (3) and locking segments (4) arranged between them in alternating order. These locking segments (4) and sealing segments (3) taper wedge-shaped in opposite directions radially inward and outward, respectively. In addition, the packing seal includes at least one additional or second segment ring (20) which also has at least two sealing segments (23) and locking segments (24) arranged between them in alternating order. The sealing segments (23) and locking segments (24) both taper radially inward in this case. The locking segments (24) extend over a larger arc area than the sealing segments (23).Type: GrantFiled: February 1, 1999Date of Patent: February 27, 2001Inventor: Hans Helpap