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公开(公告)号：JPH01297449A
公开(公告)日：1989-11-30
申请号：JP12749188
申请日：1988-05-24
Applicant: NAT AEROSPACE LAB , NTN RULON CORP
Inventor： NOSAKA MASATAKA , KIKUCHI MASATAKA , UMEMOTO NOBORU
Abstract: PURPOSE:To obtain the title composition outstanding in creep resistance, lubricity and wear resistance in addition to the excellent characteristics inherent in the resin, suitable as a sliding member by incorporating a tetrafluoroethylene resin with calcium fluoride and/or calcium oxide. CONSTITUTION:The objective composition can be obtained by incorporating (A) 100 pts.wt. of a tetrafluoroethylene resin, i.e. tetrafluoroethylene homopolymer with (B) 5-90 pts.wt. of calcium fluoride and/or calcium oxide (with reaction with the moisture in air suppressed by e.g., treatment of the surface), pref.
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公开(公告)号：JPH0492116A
公开(公告)日：1992-03-25
申请号：JP20695490
申请日：1990-08-02
Applicant: NAT AEROSPACE LAB , NTN ENG PLAST CORP
Inventor： NOSAKA MASATAKA , KIKUCHI MASATAKA , UMEMOTO NOBORU
Abstract: PURPOSE:To permit use under severe conditions and obtain a material which is excellent in slide characteristics and wear resistance by using tetrafluoroethylene resin containing magnesium oxide. CONSTITUTION:Tetrafluoroethylene resin containing magnesium oxide is used as a material for an antifriction bearing holder. The material for the antifriction bearing holder is provided with wear resistant characteristics added by magnesium oxide to the tetrafluoroethylene resin which is a main mold material and has self lubrication, so that the material is excellent in wear resistance and lubrication even at an extremely low temperature.
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公开(公告)号：JPS63167118A
公开(公告)日：1988-07-11
申请号：JP31455286
申请日：1986-12-27
Applicant: NAT AEROSPACE LAB , NTN TOYO BEARING CO LTD
Inventor： NOSAKA MASATAKA , TAJIRI MASANORI , ARIMITSU TADAO
IPC: F16C19/26
Abstract: PURPOSE:To prevent a bearing from its seizure, by constituting either an outer ring or an inner ring of a bearing ring and loose ribs and forming a low friction layer on at least an inside surface of each loose rib. CONSTITUTION:An outer ring 4 comprises a bearing ring 8 and loose ribs 9 which are attached coming into contact with both side surfaces of the bearing ring 8. The loose rib 9 forms its internal diameter and external diameter smaller than the internal diameter and the external diameter of the bearing ring 8. The loose rib 9 is mounted so that it can freely move in the axial direction by guide pins 10 protrusively provided in the both side surfaces of the bearing ring 8. While the loose rib 9 forms on its internal peripheral surface and peripheral surface a low friction layer 11, causing friction resistance, generated in contact surfaces with the end surface of a roller 7 and with a device main unit 1, to be reduced.
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公开(公告)号：JPH06272716A
公开(公告)日：1994-09-27
申请号：JP5731893
申请日：1993-03-17
Applicant: NAT AEROSPACE LAB , NAT SPACE DEV AGENCY , NTN TOYO BEARING CO LTD
Inventor： KIKUCHI MASATAKA , NOSAKA MASATAKA , TAJIRI MASANORI , KONDO HIROMITSU
Abstract: PURPOSE:To enable a solid lubrication rolling bearing to be sufficiently resistant even to the use in such a condition that it is brought into contact with liquid or gaseous oxygen especially under a very low temperature by providing a gold coat that has been improved in the adhesiveness to a substrate, lubricity, and wear resistance to the frictional surface thereof. CONSTITUTION:On the frictional surface of a rolling bearing, a coat of a binary alloy in which copper of 15 to 35wt.%, cobalt of 1 to 3wt.%, or nickle of 2 to 7wt% have been added making a principal component of gold is formed by the ion plating method.
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公开(公告)号：JPS62261718A
公开(公告)日：1987-11-13
申请号：JP10589986
申请日：1986-05-09
Applicant: NAT AEROSPACE LAB , NAT SPACE DEV AGENCY
Inventor： NOSAKA MASATAKA , OIKE MAMORU , SUZUKI HIROYOSHI , KATSUTA HIDEAKI , OKI SHUNEI , OKAYASU AKIRA , IKEDA TATSUO , KABAYAMA KAORU
Abstract: PURPOSE:To improve lubricating property, extend a service life and suppress heat generation by melting and removing glass fibers on the machined surface part of a bearing retainer made of a self-lubricating type material reinforced by adding glass fibers. CONSTITUTION:A partially processed material of a short cylindrical shape is formed with a glass fiber reinforced PTFE compound material formed by impregnating the PTFE having self-lubricating property into glass-woven cloth. Its outer circumference is then ground to a specified diameter and a number of pocket holes 2 are machined on its peripheral surface to form a bearing retainer 1. The bearing retainer 1 is then immersed in hydrofluoric acid to melt and remove glass fibers to a depth of PTFE layer necessary for working as a lubricant. Accordingly, since the glass fibers are not exposed on the surfaces of the pocket holes 2 down to an appropriate depth, lubricating property is improved, life is extended and heat generation is suppressed.
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Patent Agency Ranking
公开(公告)号：JP2003227784A
公开(公告)日：2003-08-15
申请号：JP2002024716
申请日：2002-01-31
Applicant: NAT AEROSPACE LAB
Inventor： YOSHIDA MAKOTO , NOSAKA MASATAKA , SUDO TAKAYUKI , KIKUCHI MASATAKA , SATO MASAKI , TAKADA HITOSHI
Abstract: PROBLEM TO BE SOLVED: To provide a stress-testing method and a stress-testing apparatus for greatly improving the evaluation of a light material such as a compound material by allowing a stress state to be solved in a state of including the lamination structure of a shell-like specimen and end face treatment and obtaining the temperature dependency of the amount of permeation of helium. SOLUTION: A shell-like specimen 1 comprising a carbon-fiber reinforced resin-based compound material that is used for a thin shell structure is fixed to an apparatus body 11, and the pressure of a helium gas supplied to a pressure chamber 21 is allowed to operate on the recessed surface side of a dome section 2 in the shell-like specimen 1. The displacement in a top section 2a of the dome section 2 is detected by a laser displacement meter 12. The shell-like specimen 1 is cooled to an arbitrary temperature via a partition board 18 that is cooled by an extremely low-temperature fluid supplied to a cooling chamber 22. The amount of the helium gas through the shell-like specimen 1 is detected by a helium leakage detector 33 for sucking through a negative pressure chamber 30. COPYRIGHT: (C)2003,JPO
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公开(公告)号：JPH01299316A
公开(公告)日：1989-12-04
申请号：JP12749088
申请日：1988-05-24
Applicant: NAT AEROSPACE LAB , NTN RULON CORP
Inventor： NOSAKA MASATAKA , OIKE MAMORU , UMEMOTO NOBORU
Abstract: PURPOSE:To obtain a roller bearing fit for use under severe ambience like high vacuum and cryogenic condition by composing a roller bearing cage with tetrafluoroethelene resin. CONSTITUTION:A bearing cage is composed of tetrafluoroethelene resin containing at least calcium fluoride or calcium oxide. A bearing incorporating this roller bearing cage requires less operating torque in a condition where no lubricant is supplied, and the amount of wear of the cage itself becomes lesser so that a stabilized operation is assured under severe ambience.
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公开(公告)号：JPS63302166A
公开(公告)日：1988-12-09
申请号：JP13791487
申请日：1987-06-01
Applicant: NAT AEROSPACE LAB
Inventor： NOSAKA MASATAKA , KAMIJO KENJIRO
Abstract: PURPOSE:To increase the amount of a liquid having high liquid oxygen concentration and augment a driving force by separating liquid air into a liquid of high liquid oxygen concentration and another liquid of high liquid nitrogen concentration, and using the liquid of high liquid nitrogen as a cooling source for intake air after the decompression and temperature reduction thereof. CONSTITUTION:Liquid hydrogen 4 stored in a tank 1 installed on a flying body is pressurized and fed via a pump 2, and cools intake air 5 via an air condenser 3 and an air precooler 10. And then hydrogen 4 is supplied to an engine combustor 14. In the aforesaid constitution, liquid air 6 is separated into a liquid 8 of high liquid Oxygen concentration and another liquid 9 of high liquid nitrogen concentration via a separator 7. And the liquid 9 of high nitrogen concentration is decompressed by a throttle 18 and then an air partial condenser 20 in the upstream of the air condenser 3. According to the aforesaid system, the intake air 5 from an air duct 11 is cooled.
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公开(公告)号：JPS60113820A
公开(公告)日：1985-06-20
申请号：JP21911083
申请日：1983-11-21
Applicant: NAT AEROSPACE LAB
Inventor： NOSAKA MASATAKA , OIKE MAMORU
Abstract: PURPOSE:To prevent separation of solid lubricant from organic material by forming a retainer by means of alternately laminating a solid lubricant impregnated organic material layer and a cloth-layer. CONSTITUTION:A cloth 7' impregnated with organic material like plastics, etc. and a sheet 8 made of organic material like plastics, etc. impregnated with molybdeniumdisulfide, graphite, etc. are wrapped alternately around a spindle 9' in a multilayer form until the desired thickness is achieved. While wrapping or after wrapping, both the cloth 7' and the sheet 8 are heated and pressurized together to become an integral construction. An obtained cylindrical laminated body is cut off vertically to the spindle at the desired intervals and then a retainer 4' can be formed by drilling pockets supporting balls in each cut-laminated body.
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公开(公告)号：FR2826117A1
公开(公告)日：2002-12-20
申请号：FR0207254
申请日：2002-06-13
Applicant: NAT AEROSPACE LAB
Inventor： YOSHIDA MAKOTO , OIKE MAMORU , NOSAKA MASATAKA , KIKUCHI MASATAKA , SUDO TAKAYUKI , WATANABE YOSHIAKI
Abstract: The system has double-cylinder type cartridge whose inner cylindrical portion is made to internally contact the bearing balls and an outer cylindrical portion is connected to the inner cylindrical portion through a ring-type support. The strain gauges for measuring bearing load are arranged on the surface of the outer cylindrical portion.
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