Patents Examined by Vishal A Patel
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Patent number: 11971105Abstract: Disclosed is a swivel including inner and outer mutually rotatable swivel members having respective inner fluid paths communicating with each other through an annular space at an interface between the swivel members and being provided with a sealing arrangement on a side of the annular space at the interface including a peripheral groove provided in the inner and/or outer swivel member, and a sealing element received therein and arranged for static sealing against a first one of the swivel members, inside the groove and for dynamic sealing against a second one of the swivel members, a surface inside the groove in the first one of the swivel members abutting the sealing element being a textured surface extending along at least a part of one or more inner surfaces of the groove and having three-dimensional textural elements for making frictional contact with the sealing element.Type: GrantFiled: December 10, 2020Date of Patent: April 30, 2024Assignee: SINGLE BUOY MOORINGS INC.Inventor: Liva Christian Randrianarivony
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Patent number: 11933442Abstract: A pipe sealing gasket is shown which is designed to be received within a raceway provided within the female, belled end of a section of plastic pipe which is assembled with a mating male pipe end to form a plastic pipe joint. The gasket is a two-component gasket having a softer, elastomeric portion and a harder, plastic ring portion. A splicing technique is used to form the softer, elastomeric portion with the harder, plastic portion being injection molded over the previously formed elastomeric portion.Type: GrantFiled: April 4, 2022Date of Patent: March 19, 2024Assignee: S & B TECHNICAL PRODUCTS, INC.Inventors: Mark A. Weih, Rodney Pacheco
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Patent number: 11873903Abstract: A segment of a seal assembly for forming a hydrodynamic seal against a rotating member can include a main body extending between first and second sides and defining a radial internal surface for forming a hydrodynamic seal with the rotating member. The main body can include a main surface extending between the main body first and second sides, a fluid inlet portion recessed from the main surface, and a hydrodynamic pad region located adjacent the fluid inlet portion and extending in a circumferential direction. The hydrodynamic pad region can include a first section and a second section separated by a land portion, wherein the first and second sections are recessed from the main surface.Type: GrantFiled: December 18, 2020Date of Patent: January 16, 2024Assignee: Eaton Intelligent Power LimitedInventors: Gerald Maurice Berard, Edward Nicholas Ruggeri
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Patent number: 11852240Abstract: A rotational seal assembly is associated with a rotating component. The rotational seal includes an outer casing, an inner casing, a rotational seal connected to the outer casing and the inner casing, and a followability enhancer. A section of the rotational seal includes a heel portion and a toe portion. The rotational seal is configured to contact, via a first surface of the section of the rotational seal and during operation of the rotating component, the rotating component. The followability enhancer is configured to contact, during the operation of the rotating component, a first region of a second surface of the section of the rotational seal that is associated with the toe portion. The followability enhancer is configured to not contact, during the operation of the rotating component, a second region of the second surface of the section of the rotational seal that is associated with the heel portion.Type: GrantFiled: February 24, 2022Date of Patent: December 26, 2023Assignee: Caterpillar Inc.Inventors: Elmer S Zanoria, Hong Lian, Keith Harmeyer, Daniel Joshua Smith
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Patent number: 11852241Abstract: There is provided a sliding component that supplies a sealed fluid to a leakage side in a gap between sliding surfaces to exhibit high lubricity and has a small leakage of the sealed fluid. A sliding component has an annular shape and is disposed in a place where relative rotation is performed in a rotary machine. The sliding component includes a plurality of dynamic pressure generating mechanisms provided in a sliding surface of the sliding component. Each of the dynamic pressure generating mechanisms includes a deep groove portion that communicates with a leakage side, and a shallow groove portion that communicates with the deep groove portion and extends from the deep groove portion in a circumferential direction. An end portion in an extending direction of the shallow groove portion is formed into a tapered shape in a plan view.Type: GrantFiled: January 31, 2020Date of Patent: December 26, 2023Inventor: Hiroshi Suzuki
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Patent number: 11852242Abstract: A packing ring for a sealing device, having at least two segments that are arranged around a common main axis (X). In order to be able to detect the current condition of wear, the packing ring has at least one indicator means that indicates a position of at least one of the segments in a radial direction (R) perpendicular to the main axis (X) of the packing ring.Type: GrantFiled: January 26, 2018Date of Patent: December 26, 2023Assignee: STASSKOL GMBHInventors: Marc Langela, Dennis Kranert, Uwe Morawa
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Patent number: 11852245Abstract: A device for adjusting and compensating working wear gaps of a floating seal ring, which is provided on a movable seat chamber, a floating seal ring and a rubber ring are provided in the movable seat chamber, the movable seat chamber and the shaft are sealed by a shaft sealing rubber ring, wherein: adjusting screw holes are provided on a center of the shaft along an axial direction, a bayonet slot for penetrating the shaft is provided on an outer side of the shaft along a radial direction, a bayonet is provided in the bayonet slot, and a locking groove is provided on an end portion of the movable seat chamber, an adjusting screw inserted into the adjusting screw hole is provided on an end portion of the shaft.Type: GrantFiled: August 10, 2020Date of Patent: December 26, 2023Assignee: WUHAN XINHUAFENG MACHINERY MANUFACTURING CO., LTDInventors: Zhenghao Yu, Sichun Yu
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Patent number: 11835141Abstract: To provide a dust cover capable of maintaining a state in which a first flexible part and a second flexible part of a bellows are fitted onto a mounting member. A dust cover includes a bushing, a bellows, and a mounting member. The mounting member has a main body and a flange part.Type: GrantFiled: June 18, 2020Date of Patent: December 5, 2023Assignee: NSK LTD.Inventor: Seiichi Moriyama
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Patent number: 11815183Abstract: A mechanical seal includes rotating seal ring which rotate with a rotary shaft, stationary seal rings, and an adaptor which holds the stationary seal rings, the adaptor being fixed to a seal cover by bolts. The mechanical seal further includes a plurality of holders brought into contact with the adapter and provided with through holes. A body part of each of the bolts passes through each of the through holes and is screwed into each of threaded holes formed in the seal cover. The plurality of holders being arranged so as to surround the rotary shaft.Type: GrantFiled: November 29, 2022Date of Patent: November 14, 2023Inventors: Masakazu Kito, Yoshiaki Takigahira
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Patent number: 11815182Abstract: A mechanical seal includes a pair of seal rings that rotate relative to each other; and a retainer that holds the seal ring. The retainer includes an annular base portion, an annular holding portion that is externally fitted to an outer periphery of the seal ring, and an annular connection portion that connects the base portion and the annular holding portion in an axial direction, and an annular space partially surrounded by the base portion, the annular connection portion, and the annular holding portion is formed between the outer periphery of the seal ring and an inner periphery of the retainer. The retainer has a plurality of beams which are disposed in the annular space to connect the annular base portion and the annular holding portion.Type: GrantFiled: May 21, 2020Date of Patent: November 14, 2023Inventor: Masakazu Kito
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Patent number: 11808360Abstract: A scraper ring is provided with a plurality of sealing sections on the radially inner circumferential surface, each including a scraping edge, wherein the sealing sections are spaced axially apart from each other by inner circumferential grooves, with at least one recess provided on the circumference of the scraper ring which extends at least partially from a first axial ring end to a second axial ring end and extends at least partially in a direction different from the axial direction of the scraper ring. At least one drainage opening is provided on the outer circumferential surface of the scraper ring, which is connected to at least one inner circumferential groove for removing scraped oil from the inner circumferential grooves.Type: GrantFiled: September 17, 2019Date of Patent: November 7, 2023Assignee: Hoerbiger Wien GmbHInventors: Marian Janko-Grasslober, Martin Lagler, Andreas Kaufmann
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Patent number: 11802623Abstract: A mechanical seal includes rotating seal ring which rotate with a rotary shaft, stationary seal rings, and an adaptor which holds the stationary seal rings 30, the adaptor 5 being fixed to a seal cover by bolts. The mechanical seal further includes a plurality of holders brought into contact with the adapter and provided with through holes. A body part of each of the bolts passes through each of the through holes and is screwed into each of threaded holes formed in the seal cover. The plurality of holders 9 being arranged so as to surround the rotary shaft.Type: GrantFiled: April 2, 2019Date of Patent: October 31, 2023Inventors: Masakazu Kito, Yoshiaki Takigahira
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Patent number: 11796063Abstract: A seal assembly for a rotatable shaft assembly includes a seal housing and each of a main seal and a dust seal extending circumferentially around a seal housing center axis. The dust seal includes a radially inward dust seal lip, and is formed by a sealing layer having a plurality of ventilation openings formed therein, and a debris-blocking filter layer attached to the sealing layer and positioned across the ventilation openings. The main seal and dust seal assist in maintaining lubricating oil within a seal cavity. The dust seal prevents entry of debris whilst ventilating the seal cavity to limit carbonization of oil on seal assembly components. In an implementation the seal assembly is part of a rotatable crankshaft assembly.Type: GrantFiled: May 27, 2021Date of Patent: October 24, 2023Assignee: Caterpillar Inc.Inventors: Keith Joseph Harmeyer, Elmer S. Zanoria, Daniel Joshua Smith
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Patent number: 11781655Abstract: A sealing member (2), for waterproof sealing of a volume, comprises a hollow, generally cylindrical body and a sealing area (5a, 5b) at the respective axial ends thereof. At least one sealing area (5a) comprises a first radially extending portion (6) and a second portion (7) extending in a reverse direction partly overlapping the first portion. The second portion (7) has a free end and is arranged for pressing towards the first portion (6), thereby forming a seal with the first portion (6). A sealing system comprises a sealing member (2) as above, a sealing seat (9) for abutment against the sealing member (2), and a counterpart surface (11), for pressing the sealing member (2) against the sealing seat (9). The sealing seat (9) comprises an inclined surface (10). A work tool (1) comprising the above-mentioned sealing system has at least one sealing area (5a) of the sealing member (2) pressed between a housing (4) and a chassis (3) of the work tool (1).Type: GrantFiled: May 24, 2021Date of Patent: October 10, 2023Assignee: HUSQVARNA ABInventors: Jörgen Johansson, Stefan Stark, Lars Ederfors
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Patent number: 11781439Abstract: A component for a gas turbine engine according to an example of the present disclosure includes, among other things, a body including a cold side surface adjacent to a mate face. A plurality of ridges extends from the cold side surface. A seal member abuts the plurality of ridges to define a plurality of cooling passages. The seal member is configured to move between a first position and a second position relative to the plurality of ridges. Each of the plurality of cooling passages includes a first inlet defined at the first position and a second, different inlet defined at the second position. A method of sealing between adjacent components of a gas turbine engine is also disclosed.Type: GrantFiled: September 16, 2019Date of Patent: October 10, 2023Assignee: RTX CORPORATIONInventors: Dominic J. Mongillo, Jr., Brandon W. Spangler, Lane Thornton
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Patent number: 11781399Abstract: Disclosed herein are seal assemblies that may each include: a metal ring that may have a metal convex outer surface and two metal outer edges; a ring that may have a non-metal concave inner surface and two protrusions, each of the non-metal protrusions may have a surface facing one of the two metal outer edges, wherein: the metal convex outer surface may be disposed against the non-metal concave inner surface; and at least one of the two metal outer edges may be abutted against the inner surface of one of the two protrusions.Type: GrantFiled: January 19, 2023Date of Patent: October 10, 2023Inventor: Merle Lynn Bell
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Patent number: 11773974Abstract: Embodiments of a combination piston and piston ring to reduce the volume of a crevice defined between the circumferential wall of a cylinder and a portion of the outer wall of a piston within the cylinder, the portion extending down from the top of the piston. The combination piston and piston ring is configured such that pressurized fluid within the cylinder reliably urges a radial face of the piston ring to sealingly engage the circumferential wall of the cylinder, even as the piston reciprocates within the cylinder.Type: GrantFiled: November 16, 2022Date of Patent: October 3, 2023Assignee: LiquidPiston, Inc.Inventors: Nikolay Shkolnik, Alexander Shkolnik
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Patent number: 11767916Abstract: To provide sliding components capable of suppressing dynamic pressure generation mechanisms from being deformed and damaged due to wear of sliding surfaces. In a pair of sliding components which is disposed at a relatively rotating position of a rotary machine, has a plurality of dynamic pressure generation mechanisms formed in a sliding surface of the sliding component by recessed portions, and is formed in an annular shape to seal a sealed fluid by sliding the sliding surfaces of the sliding components. A surface region in the periphery of the recessed portions of the sliding component is formed to be separated from an opposite region of the sliding component.Type: GrantFiled: February 12, 2020Date of Patent: September 26, 2023Inventors: Tadatsugu Imura, Hiroshi Suzuki, Iwa Ou, Yuichiro Tokunaga
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Patent number: 11761540Abstract: Systems and methods include providing an annular seal stack for an assembly. The seal stack is disposed within an annulus formed between a probe and a housing of the assembly and configured to provide a radial seal between the probe and the housing. The seal stack includes a first support retainer, a first lipseal, a first seal support system comprising at least one support ring disposed between the first support retainer and the first lipseal, a second support retainer configured to support the first lipseal, a second lipseal, a second seal support system comprising at least one support ring disposed between the second support retainer and the second lipseal, and a third support retainer configured to support the second lipseal.Type: GrantFiled: August 18, 2021Date of Patent: September 19, 2023Assignee: SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATIONInventors: Mark W. Armitage, Douglas George
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Patent number: 11754188Abstract: A cassette seal arrangement for sealing between a shaft and a housing includes a sleeve configured to be mounted to the shaft and including a cylindrical portion and a radially extending portion extending radially outward from the cylindrical portion. A retainer cartridge includes a main retainer configured to be mounted to the housing and supporting a seal member that includes a main seal lip and an exclusionary retainer connected to the main retainer and supporting an exclusionary seal configured to engage the shaft. An electrically conductive non-woven element is disposed longitudinally between the seal member and the exclusionary seal and engages the retainer cartridge and is configured to engage the shaft.Type: GrantFiled: October 29, 2021Date of Patent: September 12, 2023Assignee: Freudenberg-NOK General PartnershipInventors: D. Anthony Manley, Darin Battles, Christopher Beller