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公开(公告)号：US11766761B1
公开(公告)日：2023-09-26
申请号：US16993055
申请日：2020-08-13
发明人： Daniel Marin Scott , Daren Nathaniel Heaton , Jeremy Brett Lynn , Mark Pehrson Chapman , Oakley D. Bond
IPC分类号： B24D18/00 , B24D3/00 , B24D3/10 , C25F7/00 , B24D99/00 , F16C33/04 , F16C33/26 , C25F3/02 , B24D3/02 , B24D11/00 , F16C17/04 , F16C17/02
CPC分类号： B24D3/005 , B24D3/10 , B24D18/00 , B24D18/0009 , B24D99/005 , C25F3/02 , C25F7/00 , F16C33/043 , F16C33/26 , B22F2999/00 , F16C17/02 , F16C17/04
摘要： A method of processing a superabrasive element includes providing a superabrasive element including a polycrystalline diamond table that includes a metallic material disposed in interstitial spaces defined within the polycrystalline diamond table. The polycrystalline diamond table includes a superabrasive face and a superabrasive side surface extending around an outer periphery of the superabrasive face. The method also includes leaching the metallic material from at least a volume of the polycrystalline diamond table to produce a leached volume in the polycrystalline diamond table by (1) exposing at least a portion of the polycrystalline diamond table to a processing solution, (2) exposing an electrode to the processing solution, and (3) applying a charge to the electrode such that a voltage is generated between the polycrystalline diamond table and the electrode and the voltage is applied to the processing solution. The method includes the use of an improved processing solution, including an organic acid and a divalent (e.g., Group II) metal salt, to increase the leaching depth.
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公开(公告)号：US11753873B1
公开(公告)日：2023-09-12
申请号：US17323537
申请日：2021-05-18
发明人： Greg Carlos Topham , Renato Ventura
IPC分类号： E21B10/56 , E21B10/62 , E21B10/46 , F16C33/26 , C22C26/00 , E21B10/567 , E21B10/573 , B24D18/00 , E21B10/54
CPC分类号： E21B10/567 , B24D18/0009 , C22C26/00 , E21B10/46 , E21B10/54 , E21B10/5676 , E21B10/573 , E21B10/62 , F16C33/26 , F16C2206/04 , F16C2240/48
摘要： Embodiments of the invention relate to polycrystalline diamond compacts (“PDCs”) including a polycrystalline diamond (“PCD”) table having a structure for enhancing at least one of abrasion resistance, thermal stability, or impact resistance. In an embodiment, a PDC includes a PCD table. The PCD table includes a lower region including a plurality of diamond grains exhibiting a lower average grain size and at least an upper region adjacent to the lower region and including a plurality of diamond grains exhibiting an upper average grain size. The lower average grain size may be at least two times greater than that of the upper average grain size. The PDC includes a substrate having an interfacial surface that is bonded to the lower region of the PCD table. Other embodiments are directed methods of forming PDCs, and various applications for such PDCs in rotary drill bits, bearing apparatuses, and wire-drawing dies.
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公开(公告)号：US20230100593A1
公开(公告)日：2023-03-30
申请号：US18077868
申请日：2022-12-08
发明人： S. Barrett Peterson
摘要： Methods of manufacturing a radial sliding bearing may include coupling superhard contact elements to support rings where each superhard contact element includes a superhard contact surface and forming at least some of the superhard contact surfaces to comprise an arcute or a planar surface.
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4.发明申请公开(公告)号：US20220388121A1
公开(公告)日：2022-12-08
申请号：US17890218
申请日：2022-08-17
发明人： David P. Miess , Andrew E. Dadson
摘要： A method of processing a polycrystalline diamond element includes forming a protective layer over a selected portion of a polycrystalline diamond element, the polycrystalline diamond element having a polycrystalline diamond table that includes a superabrasive face, a superabrasive side surface, and a chamfer extending between the superabrasive face and the superabrasive side surface. A portion of the superabrasive side surface is covered by the protective layer and the protective layer is not formed over the chamfer. The method includes exposing at least a portion of the polycrystalline diamond element to a leaching solution. A polycrystalline diamond element has a polycrystalline diamond table that includes a leached volume extending from the superabrasive face to a portion of the chamfer proximate to the superabrasive side surface, and the leached volume does not substantially extend along the superabrasive side surface.
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公开(公告)号：US11486446B2
公开(公告)日：2022-11-01
申请号：US17434889
申请日：2020-03-04
摘要： A sliding bearing includes:—an inner ring element;—an outer ring element;—at least one sliding bearing element, which is arranged between the inner ring element and the outer ring element. The sliding bearing element has multiple sliding bearing pads, wherein the individual sliding bearing pads each have a radial bearing surface and a fastening profile located opposite the radial bearing surface. The inner ring element has at least one receiving profile on its radial outside, which receiving profile serves for the positive locking connection between the sliding bearing pads and the inner ring element.
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公开(公告)号：US11378122B2
公开(公告)日：2022-07-05
申请号：US17150396
申请日：2021-01-15
摘要： Bearing assemblies and methods of using bearings are provided in the present disclosure. In one embodiment, a bearing ring is provided having a plurality of carrier components removably coupled therewith. Each carrier component may carry one or more bearing elements. Upon wearing of the bearing elements beyond a desired amount, the carrier components may be removed from the bearing ring and installed in a different bearing ring to place the mearing elements at their original bearing surface radius. In another embodiment, individual bearing elements may be radially adjustable relative to the bearing ring to define and redefine the radius of a radial bearing surface.
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公开(公告)号：US20210317870A1
公开(公告)日：2021-10-14
申请号：US17103365
申请日：2020-11-24
申请人： The Heil Co.
发明人： David C. GENTRY , Bryan STEWART
IPC分类号： F16C11/04 , F16B7/10 , F16C17/02 , F16C35/02 , B66C23/70 , F16C29/02 , F16C29/12 , F16C33/26 , B66C23/00 , B65F3/04 , B65F3/00
摘要： A telescopic side arm for a refuse vehicle has an inner and outer boom. A mounting assembly secures the outer boom with a refuse vehicle. A plurality of bearing pads is positioned between the inner and outer booms to provide smooth movement between the inner and outer booms. A plurality of shims is associated with the bearing pads to assure a tight fit between the inner and outer booms.
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公开(公告)号：US10995795B2
公开(公告)日：2021-05-04
申请号：US16551674
申请日：2019-08-26
发明人： S. Barrett Peterson
摘要： A bearing assembly includes a support ring circumferentially surrounding a central bearing axis and a plurality of superhard bearing elements coupled to the support ring. Each of the plurality of superhard bearing elements has a base, a superhard bearing surface, and a lateral periphery extending between the base and the superhard bearing surface. The superhard bearing surface has a partial-ellipsoidal surface shape. A bearing apparatus includes an inner bearing assembly and an outer bearing assembly. A subterranean drilling system includes an output shaft operably coupled to a bearing apparatus.
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公开(公告)号：US10962056B2
公开(公告)日：2021-03-30
申请号：US16399161
申请日：2019-04-30
申请人： Mark Hunt , Chad Daigle
发明人： Mark Hunt , Chad Daigle
摘要： A method of manufacturing a radial bearing assembly having a bearing surface created from a plurality of spherical bearing inserts positioned within insert retainer channels extending diagonally along the length of the bearing sleeve. The method of manufacture includes providing insert retainer channels having a curved bottom surface. The method of manufacture utilizes a mold for simultaneously brazing and bonding the spherical bearing inserts to the surface of the bearing sleeve.
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公开(公告)号：US10883591B2
公开(公告)日：2021-01-05
申请号：US15760671
申请日：2015-09-29
发明人： Masaru Kobayashi
IPC分类号： F16H1/32 , F16H49/00 , F16C33/26 , F16C17/18 , F16C17/04 , F16C19/55 , F16C19/24 , F16C33/58 , F16C19/50
摘要： The wave generator of a strain wave gearing is provided with an ellipsoidally contoured wave generator plug and a wave generator bearing. The wave generator bearing is provided with an annular body fitted between inner and outer races in a sliding contact state. The annular body is composed of an endless coil spring and has a rigidity that is able to maintain a constant gap between the inner and outer races. The annular body also has a specified overall flexibility in the radial direction so that the annular body can be flexed into an ellipsoidal shape by the wave generator plug. Since sliding occurs between the annular body and the inner race when the wave generator plug rotates, it is possible to generate a wave motion in an externally toothed gear with a small rotational torque.
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