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公开(公告)号：US12104135B2
公开(公告)日：2024-10-01
申请号：US17752575
申请日：2022-05-24
IPC分类号： C10M105/18 , C10N20/00 , C10N30/00 , C10N40/02 , C10N40/18
CPC分类号： C10M105/18 , C10M2207/0406 , C10N2020/079 , C10N2030/30 , C10N2030/40 , C10N2040/02 , C10N2040/18
摘要： Provided is a lubricant composition including a bicyclic liquid crystal of formula (1), tricyclic liquid crystal compounds of formula (2), and formula (3). The composition is suitable for use in a clean environment, under a high vacuum, under high temperature and a bearing.
R1 and R2 are the same or different from each other, and each is —OCH2CH2CH(R′)CH2CH2OR.
R11 and R21 are the same or different from each other, and each is —OR. R12, R13, R22 and R23 are the same or different from each other, and each is hydrogen or a group —OR.
R31 and R41 are the same or different from each other, and each is —OCH2CH2CH(R′)CH2CH2OR. R32, R33, R42, and R43 are the same or different from each other, and each is hydrogen or —OCH2CH2CH(R′)CH2CH2OR. R is a linear or branched CnH2n+1, 1≤n≤20, and R′ is methyl or ethyl.-
公开(公告)号：US12071977B2
公开(公告)日：2024-08-27
申请号：US17759238
申请日：2020-11-12
发明人： Kenichiro Tsuruta
CPC分类号： F16C29/005 , F16C29/048 , F16C29/06
摘要： A linear motion guide bearing 1 includes a rail 10, a slider 20, and a plurality of rolling elements. The slider 20 has formed therein a pair of circulation passages, which are spaces connecting one end and another end in each of a pair of load-carrying races, which are spaces between a pair of first rolling surfaces 41 and a pair of second rolling surfaces 42. In a cross section perpendicular to the longitudinal direction, the rail 10 includes a bottom wall portion 11, a first side wall portion 12, a second side wall portion 13, and a top wall portion 14. One first rolling surface 41 is made up of a wall surface 15A on an inner side of a first corner portion 15, which is a region where the second side wall portion 13 and the bottom wall portion 11 are connected. The other first rolling surface 41 is made up of a wall surface 16A on an inner side of a second corner portion 16, which is a region where the first side wall portion 12 and the top wall portion 14 are connected.
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公开(公告)号：US20240200602A1
公开(公告)日：2024-06-20
申请号：US17904238
申请日：2021-09-17
发明人： Kenichiro TSURUTA
摘要： A rolling bearing includes a steel outer ring, a steel inner ring having a common central axis with the outer ring and disposed on an inner circumference side of the outer ring, and a plurality of rolling elements disposed to be able to roll on an inner circumferential surface of the outer ring and an outer circumferential surface of the inner ring. The outer ring includes a first outer ring and a second outer ring that is arranged alongside the first outer ring in a first axis direction in which the central axis extends and is fixed to the first outer ring. The inner ring includes a first inner ring and a second inner ring that is arranged alongside the first inner ring in the first axis direction and is fixed to the first inner ring. One and the other of opposing portions in the first and second outer rings and in the first and second inner rings have a protruding portion and a through hole corresponding to the protruding portion formed respectively therein. The protruding portion and the through hole are fitted together, and the protruding portion and the through hole are bonded to each other.
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公开(公告)号：US11988276B2
公开(公告)日：2024-05-21
申请号：US17758831
申请日：2020-12-10
发明人： Tetsuya Sakai , Kousuke Tobari
IPC分类号： F16H57/04 , B23Q1/25 , F16H19/08 , F16H57/021 , F16H57/039 , F16H57/12 , F16H57/031
CPC分类号： F16H57/12 , B23Q1/25 , F16H19/08 , F16H57/021 , F16H57/039 , F16H2057/0213 , F16H57/031 , F16H57/0424 , F16H57/0498
摘要： A rotary table (1) includes a base body (10), a worm wheel (21), an inner ring (22), a plurality of rolling elements, and a worm screw unit (30). The worm screw unit (30) includes a worm screw (31) held to be rotatable around an axis and having a second gear (31A) meshing with the first gear (215), and a worm screw housing (32) surrounding and holding the worm screw (31) and being fixed to contact the holding surface at a planar contacting surface thereof. One of the holding and contacting surfaces has a cylindrical pin (33) arranged to protrude therefrom. The other of the holding and contacting surfaces has a first recess (11) formed to receive the pin (33), the first recess having a width corresponding to the pin (33) and being elongated in the radial direction of the worm wheel (21).
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公开(公告)号：US20240044370A1
公开(公告)日：2024-02-08
申请号：US17904233
申请日：2021-09-17
发明人： Kenichiro TSURUTA
摘要： A rolling bearing includes a steel outer ring, a steel inner ring having a common central axis with the outer ring and disposed on an inner circumference side of the outer ring, and a plurality of rolling elements disposed to be able to roll on an inner circumferential surface of the outer ring and an outer circumferential surface of the inner ring. The outer ring includes a first outer ring and a second outer ring that is arranged alongside the first outer ring in a first axis direction in which the central axis extends and is fixed to the first outer ring. The inner ring includes a first inner ring and a second inner ring that is arranged alongside the first inner ring in the first axis direction and is fixed to the first inner ring. The outer ring has a protruding portion and a through hole corresponding to the protruding portion formed in one and the other of opposing portions in the first and second outer rings, the protruding portion and the through hole being fitted together. The inner ring has a protruding portion and a through hole corresponding to the protruding portion formed in one and the other of opposing portions in the first and second inner rings, the protruding portion and the through hole being fitted together. A slit is provided around either one or both of the protruding portion and the through hole.
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公开(公告)号：US11807825B2
公开(公告)日：2023-11-07
申请号：US17761917
申请日：2020-08-11
IPC分类号： C10M105/18 , C10M125/18 , C10N30/00 , C10N20/00 , C10N30/06 , C10N30/12 , C10N40/02
CPC分类号： C10M105/18 , C10M125/18 , C10M2201/081 , C10M2207/04 , C10M2207/0406 , C10N2020/079 , C10N2030/06 , C10N2030/12 , C10N2030/41 , C10N2040/02
摘要： Provided are a lubricant composition which is advantageous in that, when applied to a contact area of metal parts, the lubricant composition can suppress generation of rust and can exhibit excellent lubricating performance, and a bearing the lubricant composition having sealed therein. A lubricant composition comprising at least one dicyclic liquid crystal compound represented by the following formula (1), at least one tricyclic liquid crystal compound represented by the following formula (2), and halogen ions, wherein the content of the halogen ions in the lubricant composition is 1 to 900 ppm.
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公开(公告)号：US11619262B2
公开(公告)日：2023-04-04
申请号：US17512010
申请日：2021-10-27
发明人： Tsuguyoshi Nara , Yusuke Yamaguchi , Daisuke Sato
摘要： A linear motion guide unit includes a rail having a raceway groove extending on each longitudinal side surface, and a slider fitting over the rail and movable relative to the rail. The rail includes a first rail member and a second rail member connected to each other in a longitudinal direction at a connecting portion. The first rail member has, at least at one end, a protrusion extending in the longitudinal direction. The second rail member has, at least at one end, a notch to be combined with the protrusion. In the connecting portion, the protrusion of the first rail member is combined with the notch of the second rail member to connect the first rail member and the second rail member. The protrusion and the notch are fixed with a columnar member extending in a direction intersecting the longitudinal direction.
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公开(公告)号：US20230051758A1
公开(公告)日：2023-02-16
申请号：US17759238
申请日：2021-11-12
发明人： Kenichiro TSURUTA
摘要： A linear motion guide bearing 1 includes a rail 10, a slider 20, and a plurality of rolling elements. The slider 20 has formed therein a pair of circulation passages, which are spaces connecting one end and another end in each of a pair of load-carrying races, which are spaces between a pair of first rolling surfaces 41 and a pair of second rolling surfaces 42. In a cross section perpendicular to the longitudinal direction, the rail 10 includes a bottom wall portion 11, a first side wall portion 12, a second side wall portion 13, and a top wall portion 14. One first rolling surface 41 is made up of a wall surface 15A on an inner side of a first corner portion 15, which is a region where the second side wall portion 13 and the bottom wall portion 11 are connected. The other first rolling surface 41 is made up of a wall surface 16A on an inner side of a second corner portion 16, which is a region where the first side wall portion 12 and the top wall portion 14 are connected.
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公开(公告)号：US20220186779A1
公开(公告)日：2022-06-16
申请号：US17550199
申请日：2021-12-14
IPC分类号： F16C29/06
摘要： A linear motion guide unit includes a rail, a slider slidable relative to the rail, and rolling elements rollable in a rolling groove formed with the rail and the slider. The slider has a lubricating oil supply device provided at least at one end face thereof. The lubricating oil supply device includes a lubricating member that retains lubricating oil and abuts against a raceway surface of the rail to supply the lubricating oil to the rail, a housing having front, rear, and bottom surfaces covering front, rear, and bottom surfaces of the lubricating member, with an upper surface of the housing being left open, and a cover that covers at least an upper surface of the lubricating member. The housing is fixed to the slider with a first fixing member. The cover is fixed to the housing with a second fixing member, without being fixed with the first fixing member.
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公开(公告)号：US20210348078A1
公开(公告)日：2021-11-11
申请号：US17261302
申请日：2019-07-16
IPC分类号： C10M105/18
摘要： This is to provide an electrically-conductive lubricant having characteristics in combination that it shows liquid crystallinity in a wide temperature range, retains low dynamic friction coefficient, has electrical-conductivity, has almost no loss due to evaporation, decomposition and the like, has a clean appearance, and emits fluorescence, and can find deterioration or leakage immediately.
This electrically-conductive lubricant comprises at least one kind of the compound (1) represented by the formula (1): [wherein, R11 and R21 are the same or different from each other, and each is hydrogen or a group —OCH2CH2CH(R′)CH2CH2OR (R is a linear or branched CnH2n+1, 4≤n≤12, and R′ is methyl or ethyl), and R12, R13, R22 and R23 are the same or different from each other, and each is a group —OCH2CH2CH(R′)CH2CH2OR (R is a linear or branched CnH2n+1, 4≤n≤12, and R′ is methyl or ethyl)].
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