公开(公告)号：US20230279258A1

公开(公告)日：2023-09-07

申请号：US18116710

申请日：2023-03-02

Applicant: Roller Bearing Company of America, Inc

Inventor： Nolan Richard

IPC: C09D163/00 ,  C09D171/08 ,  C09D127/18

CPC classification number: C09D163/00 ,  C09D171/08 ,  C09D127/18

Abstract: A coating composition includes an epoxy resin including an epoxy monomer, a toughener and one or more self-lubricating fillers. The coating composition can be employed in a bearing that has an outer member that has a radially inwardly facing surface that defines an interior area. An inner member is disposed in the interior area. The inner member has a radially outward facing bearing surface. The coating composition is disposed between the radially inwardly facing surface and the radially outward facing bearing surface.

公开(公告)号：US11668342B2

公开(公告)日：2023-06-06

申请号：US17389529

申请日：2021-07-30

Applicant: Roller Company of America, Inc.

Inventor： Alex Habibvand ,  John H. Cowles, Jr. ,  Richard Murphy

IPC: F16C19/18 ,  F16C35/04

CPC classification number: F16C19/183 ,  F16C35/042

Abstract: A ball bearing and housing assembly includes a shaft having a stepped bore extending therethrough. The stepped bore is defined by a first bore segment having an inboard cylindrical interior surface that has a first bore diameter. The first bore segment extends from a shaft end and terminates at a shoulder. The shoulder is axially located between a first radial centerline of a plurality of balls and an inner axial end. The stepped bore is further defined by a second bore segment having an outboard cylindrical interior surface that has second bore diameter. The second bore segment extends axially from the inner axial end towards the shaft end and terminates at the shoulder. The second bore diameter is greater than the first bore diameter. A fastener is fitted through the first bore segment and threaded into a housing.

公开(公告)号：US20210316850A1

公开(公告)日：2021-10-14

申请号：US17225763

申请日：2021-04-08

Applicant: Roller Bearing Company of America, Inc.

Inventor： Mark Alger ,  Randall Kohuth ,  Dean Campbell

IPC: B64C27/51

Abstract: A piston assembly for a lead-lag damper for a blade mounted on a rotor of a helicopter includes a piston-rod that has an inside surface and a piston-head that extends radially outward therefrom. The piston-rod has two ports extending therethrough on opposing sides of the piston-head. A sleeve is positioned in the piston-rod and has two annular passages that communicate with the respective ports. A valve spool is disposed in and slidingly engages the sleeve. The valve spool has a channel which is in variable fluid communication with two passages. The piston assembly includes a biasing member that biases the valve spool axially away from it. The channel has an axial width configured to variably regulate fluid flow between the two ports to control dampening of the piston-rod in response to centrifugal forces applied to the valve spool.

公开(公告)号：US11111936B2

公开(公告)日：2021-09-07

申请号：US16998643

申请日：2020-08-20

Applicant: Roller Bearing Company of America, Inc.

Inventor： Mark Alger ,  Brandon Brown ,  Jeremy Ulliman

IPC: F15B15/17 ,  F16J1/00 ,  F16J1/04 ,  F15B15/22

Abstract: A piston assembly including a shaft having a piston arrangement. The piston arrangement has a retract-area on one side and a extend-area on the opposite side. The retract-area is larger than the extend-area so that when fluid exerts a force on the retract-area the piston arrangement generates and applies a retract force to the shaft. Upon release of the fluid pressure to the retract-area and application of the fluid pressure to the extend-area the piston arrangement generates and applies an extend force to the shaft. The retract force is greater than or equal to the extend force.

公开(公告)号：US11028928B2

公开(公告)日：2021-06-08

申请号：US16375258

申请日：2019-04-04

Applicant: Roller Bearing Company of America, Inc.

Inventor： Mark Alger ,  David Lynde ,  Brandon Brown ,  Jeremy Ulliman

IPC: F16K3/26 ,  F16K5/02 ,  F16L15/00 ,  F16K11/02 ,  F16K3/24

Abstract: A sleeve for a valve assembly has an inside surface having an interior area and a first cylindrical section extending from a first axial end and a second cylindrical section located between the first cylindrical section and second axial end. A conical interior seating surface extends between the first and second cylindrical sections. The conical interior seating surface is metallic. The sleeve includes a groove that extends circumferentially around and radially outward in the first cylindrical section. The groove extends axially away from the conical interior seating surface towards the first axial end. The sleeve has one or more ports extending radially through the first cylindrical section proximate the groove and are spaced apart from the groove by a lip formed by the first cylindrical section. The lip extends a predetermined axial distance between the groove and the port. The lip extends around the first cylindrical section and radially inward.

公开(公告)号：US20210033195A1

公开(公告)日：2021-02-04

申请号：US16942370

申请日：2020-07-29

Applicant: Roller Bearing Company of America, Inc.

Inventor： John Reinhardt ,  Samantha Brees

IPC: F16J15/3272 ,  F16J15/3212 ,  F16J9/14 ,  F16J9/06

Abstract: A sealing system for sealing a cylindrically shaped surface containing a first annular seal and a second annular seal. Each annular seal has a gap penetrating from the outer diameter to the inner diameter. The angle of the gap in the first annular seal and the angle of the gap in the second annular seal and the arrangement of the seals relative to an expander ring and a biasing ring minimizes leakage without the need for an anti-rotation pin or other means that would significantly decrease efficiency and reliability.

公开(公告)号：US10767688B2

公开(公告)日：2020-09-08

申请号：US16366565

申请日：2019-03-27

Applicant: Roller Bearing Company of America, Inc.

Inventor： Robert Pallini ,  Michael Coppola

IPC: F16C19/18 ,  F16C33/78 ,  F16C19/54 ,  H02K5/173 ,  F16C13/00

Abstract: A bearing system for a rotating vertical shaft includes a first ball bearing, having a first pitch diameter and a first axial stiffness and a second ball bearing having a second pitch diameter and a second axial stiffness. The first ball bearing is a deep groove Conrad bearing. The second ball bearing is an angular contact bearing. The first and second ball bearings are coaxial, secured to one another and rotatable together. The first pitch diameter is at least 1.5 times greater than the second pitch diameter. The bearing system has an axial stiffness ratio defined by the first axial stiffness divided by the second axial stiffness. The axial stiffness ratio is based on an axial preload force applied to the second outer ring such that an operating torque of the bearing system is within a predetermined range at temperatures from minus 40 to positive 85 degrees Celsius.

公开(公告)号：US20200032838A1

公开(公告)日：2020-01-30

申请号：US16454404

申请日：2019-06-27

Applicant: Roller Bearing Company of America, Inc.

Inventor： George Roehr ,  James Prescavage

IPC: F16C9/02 ,  F16C33/46

Abstract: A roller bearing assembly for use in a fracking pump crank shaft includes an inner ring being positioned an outer ring and a plurality of rolling elements disposed therebetween. Each of the rolling elements have a bore extending therein. The roller bearing assembly includes a cage having an annular disc with pins extending axially inward therefrom and into the bore. The pins are positioned on the annular disc so that the rolling elements are spaced apart from one another with a gap extending continuously therebetween. The gap is of a predetermined magnitude to maximize the number of rolling elements that fit between the inner ring and the outer ring to maximize load carrying capacity of the roller bearing assembly.

公开(公告)号：US20200011360A1

公开(公告)日：2020-01-09

申请号：US16456654

申请日：2019-06-28

Applicant: Roller Bearing Company of America, Inc.

Inventor： Michael J. Hartnett ,  Curtis M. Swartley ,  Charles Houle ,  Phil Smith ,  Giovanni C. Albini

IPC: F16B19/02 ,  F16B4/00

Abstract: An expandable sleeve for an interference fastener has a hollow elongate stem extending axially between an insertion end and a head portion. The elongate stem has an inside surface and an outside surface. A portion of the stem has a fluted shape and/or has a cylindrical shape with a conical portion.

公开(公告)号：US10520012B1

公开(公告)日：2019-12-31

申请号：US14999260

申请日：2016-04-14

Applicant: Roller Bearing Company of America, Inc.

Inventor： Scott McNeil ,  Sean Vintinner

IPC: F16C11/00 ,  F16C7/02 ,  F16C11/06

Abstract: A rod end includes a shaft and a head extending from the shaft. The head has an opening extending therethrough. The rod end includes a spherical bearing rotatably disposed in the opening. The spherical bearing is manufactured from an austenitic stainless steel alloy that includes 16 to 17 weight percent chromium and 0.1 to 0.18 weight percent nitrogen.