专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH074953A SCANNER FOR SCANNING PROBE MICROSCOPE AND SCANNING PROBE MICROSCOPE PROVIDED WITH THE SCANNING PROBE MICROSCOPE 失效
公开(公告)号：JPH074953A
公开(公告)日：1995-01-10
申请号：JP14812393
申请日：1993-06-18
申请人： HITACHI LTD , HITACHI CONSTRUCTION MACHINERY
发明人： AOKI KAZUO , HAZAKI EIICHI , HASHIMOTO AKIRA
IPC分类号： G01B21/30 , G01N37/00 , G01Q10/04 , H01J37/28
摘要： PURPOSE:To detect the displacement of a scanner with high accuracy irrespective of an irregularity in the characteristic of individual piezoelectric elements by a method wherein the displacement is measured and, at the same time, it is optically measured. CONSTITUTION:A scanner is provided with a cantilever receiver 4 fixed to a probe 5, with a cantilever 6, with a cantilever base 7 fixing the cantilever, with a laser 10, with a PSD (a position sensor) 11, with a microhead 9 as a mechanism to move the cantilever with reference to a scanner base and with a base retainer 8 fixed to the scanner base. The displacement of the probe 6 is converted into a change in the angle of the cantilever 6, and it is measured by using the principle of an optical lever.

2. 发明专利

JPH05126515A PROBE FINE-MOVE MECHANISM OF SCANNING-TYPE TUNNEL MICROSCOPE 失效
公开(公告)号：JPH05126515A
公开(公告)日：1993-05-21
申请号：JP10585691
申请日：1991-05-10
申请人： HITACHI CONSTRUCTION MACHINERY , HITACHI LTD
发明人： TAKADA RYUJI , HOSOKI SHIGEYUKI , HOSAKA SUMIO , YAMADA OSAMU , HAZAKI EIICHI
IPC分类号： G01B7/34 , G01N37/00 , G01Q10/04 , G01Q60/10 , G01Q60/16 , G05D3/00 , H01J37/28
摘要： PURPOSE:To prevent a drive voltage which is applied to a piezoelectric element from affecting a tunnel current by forming an insulator at a probe-mounting part, covering the surface with a conductive substance, and then interposing a conductive substance between the probe-mounting part and a piezoelectric element. CONSTITUTION:By forming a plating layer 9 with conductivity on a surface part which is exposed outside an insulator 8 which supports a probe-mounting part 5 outside, this part is shielded, thus preventing surface magnetization of the insulator 8 due to the electron beam even if STM is combined with an electron microscope and enabling noise included in a tunnel current due to charge by the electron beam to be reduced. Also, since the former can be shielded from the latter by a plating layer 9 which is provided between the mounting part 5 and a piezoelectric element 2C, noise in the tunnel current caused by a drive voltage which is applied to the element 2C can be reduced drastically.

3. 发明专利

JPS6426015A BEARING DEVICE OF SEMI-CONDUCTOR MANUFACTURING APPARATUS 失效
公开(公告)号：JPS6426015A
公开(公告)日：1989-01-27
申请号：JP18102787
申请日：1987-07-22
申请人： HITACHI LTD
发明人： HAZAKI EIICHI , KITSUNAI HIROYUKI
IPC分类号： F16C17/02
摘要： PURPOSE:To prevent abrasion powder from being discharged out of a bearing by making a clearance between a bearing periphery and a shaft to be slightly larger than a clearance between the shaft and the sliding surface of the bearing. CONSTITUTION:Abrasion powder generated by sliding between a shaft 3 and the sliding portion of a bearing 2 is captured in peripheral direction grooves 4a, 4b. Inasmuch as the diameters of peripheral portions 6a, 6b are set larger than the diameter of a sliding portion 7, these portions are out of contact with a shaft 3 and any abrasion powder is not generated from these portions. Since the diameters of the peripheral portions 6a, 6b are also set slightly larger than the diameter of the sliding portion 7, there is extremely less probability that the abrasion powder generated at the sliding portion and captured in the peripheral direction grooves 4a, 4b may be discharged out of the bearing. In this manner, the abrasion powder generated on the sliding surface of the bearing is prevented from being discharged out of the bearing, so that it is effective to prevent environmental contamination in surroundings.

4. 发明专利

JPS6316562B2 失效
公开(公告)号：JPS6316562B2
公开(公告)日：1988-04-09
申请号：JP5854881
申请日：1981-04-20
申请人： HITACHI LTD
发明人： HAZAKI EIICHI , IMAI MASAYA , TOJO KENJI , SHIIBAYASHI MASAO
IPC分类号： F04C2/02 , F01C1/02 , F01C19/00 , F04C18/02 , F04C23/02 , F04C27/00 , F04C29/02

5. 发明专利

JPS614525A VACCUM VESSEL MADE OF ALUMINUM ALLOY AND FORMATION OF OXIDIZED FILM OF PARTS FOR VACCUM APPARATUS 失效
公开(公告)号：JPS614525A
公开(公告)日：1986-01-10
申请号：JP12511184
申请日：1984-06-20
申请人： HITACHI LTD
发明人： HAZAKI EIICHI , ARAYA TAKESHI , HANEDA MITSUAKI , IMAI MASAYA
IPC分类号： C23C8/36 , B01J3/00
摘要： PURPOSE:To form a compact and high-purity oxidized film by performing the cleaning of the body to be worked with electric discharge in the gaseous atmosphere for cleaning and thereafter introducing oxygen or gaseous mixture contg. oxygen to form an oxidized film on the surface of the body to be worked. CONSTITUTION:An inert gas such as Ar and He, oxidizing or reducing gas or gaseous mixture is introduced into a closed vessel 1. High frequency voltage, DC voltage or pulse voltage is impressed between an electrode 4 and the parts 6 made of aluminum alloy to generate glow discharge and arc discharge and thereby the hydrated oxide having been formed on the surface of the parts 6 is removed with the cleaning due to the discharge. Thereafter, a valve 8 is closed and a vacuum pump 2 is actuated to draw out the cleaning gas after discharging from the vacuum vessel 1. Furthermore, a valve 10 is opened to introduce oxygen into the vacuum vessel 1 from an introduction pipe 11 and a compact and high-purity oxidized film is formed on the surface of the parts 6 made of aluminum alloy.

6. 发明专利

JPS58160581A SCROLL COMPRESSOR 失效
公开(公告)号：JPS58160581A
公开(公告)日：1983-09-24
申请号：JP4273482
申请日：1982-03-19
申请人： HITACHI LTD
发明人： SHIIBAYASHI MASAO , TOUJIYOU KENJI , HAZAKI EIICHI
IPC分类号： F04C23/02 , F04C29/02
摘要： PURPOSE:To limit a leak amount of oil and maintain the pressure in a back pressure chamber, by successively providing each of a journal bearing part and thrust bearing part to a boss bearing in the back side of a turning scroll and a main bearing and finely forming upper and bottom gaps of a balance weight between both thrust bearings. CONSTITUTION:To limit a leak amount of oil to the side of a back pressure chamber 14, a thrust space used as the lead oil passage, that is, gaps formed between upper and bottom end faces of a balance weight 16 and a thrust bearing part 8a of a main bearing and a thrust bearing part 19a of a turning scroll boss part bearing 19 are finely formed. These gaps are assumed for delta3, delta4. Accordingly, the fine gaps delta3, delta4 provided to the upper and bottom end faces of the balance weight 16 permit the slide contact between the part 8a of the bearing 8 and the part 19a of the bearing 19 located at a face-to-face position.

7. 发明专利

JPS58126491A OIL FEED DEVICE OF SCROLL FLUID MACHINE 失效
公开(公告)号：JPS58126491A
公开(公告)日：1983-07-27
申请号：JP891582
申请日：1982-01-25
申请人： HITACHI LTD
发明人： MIZUNO TAKAO , UCHIKAWA NAOSHI , MURAYAMA AKIRA , HAZAKI EIICHI
IPC分类号： F04C18/02 , F01C1/02 , F01C21/04 , F04C29/02
摘要： PURPOSE:To feed a required quantity of oil to each bearing with a simple structure by feeding oil to each bearing with a central oil feed hole provided in a crank shaft and branch pipes opening on the bearing surface, etc. CONSTITUTION:An oil suction pipe 20 is press fit to the central oil feed hole 19 provided on the rotating center of a crank shaft 9 and opened in oil 22 at the lower section of a chamber is sucked an fed to individual bearings 8, 11, 12. That is, the feed oil for the bearings 8, 11 is sucked through said central hole 19 by means of the pressure difference between a discharge pressure and an intermediate chamber pressure, and the oil passes through branch pipes 19a, 19b and further lubricates the bearings 8, 11 through grooves 19x, 19y, then the discharge oil is returned to the lower section of a chamber 1 through a communicating hole 4a togehter with discharge gas. The lower bearing 12 is likewise fed with oil through a branch pipe 19c and a groove 19z. Accordingly, a required quantity of oil can be fed to each bearing with a simple structure.

8. 发明专利

JPS5867985A BEARING OILING DEVICE OF SCROLL COMPRESSOR 失效
公开(公告)号：JPS5867985A
公开(公告)日：1983-04-22
申请号：JP16578781
申请日：1981-10-19
申请人： HITACHI LTD
发明人： HAZAKI EIICHI , TOUJIYOU KENJI , UCHIKAWA NAOSHI , MURAYAMA AKIRA
IPC分类号： F04C23/02 , F01C1/02 , F04C29/02
摘要： PURPOSE:To prevent the burning and abrasion of a bearing due to the unsatisfactory oiling at the time of starting by forming a lubricating oil reservoir around a thrust bearing by means of a frame catching the bearing. CONSTITUTION:The gas absorbed through a suction pipe 16 is compressed by a rotary scroll 3 and a stationary scroll and is discharged from a discharge pipe 18 through a discharge port 17. To perform the oiling, the oil at the chamber 1 bottom is sucked by the centrifugal pump action of an eccentric oiling passage 19b, flows through an oil chamber 20 and oiling groove 21, and lubricates a crank 8 and crank section 9b, then is discharged into an intermediate chamber 25. In addition, the oil sucked by an eccentric oiling passage 19a is fed to an oiling groove 32 to perform the oiling to a lower slide bearing 12.

9. 发明专利

JPS5835201A BEARING EQUIPMENT FOR SCROLL FLUID MACHINE 失效
公开(公告)号：JPS5835201A
公开(公告)日：1983-03-01
申请号：JP13409181
申请日：1981-08-28
申请人： HITACHI LTD
发明人： HAZAKI EIICHI , TOUJIYOU KENJI , UCHIKAWA NAOSHI , MURAYAMA AKIRA
IPC分类号： F16C17/26 , F01C1/02 , F01C21/02 , F03C2/02 , F04C2/02 , F04C23/02
摘要： PURPOSE:To reduce loss of each bearing in such a way that the side pressure is set up to be almost equal in response to the bearing load which is worked on the bearings by fluid pressure between a rotary scroll and a stationary scroll. CONSTITUTION:A stationary scroll 2 and a rotary scroll 3 provide respectively discoid end plates 4, 5, and helical laps 6, 7 which are formed in erection to them, a plain bearing 8 is attached to the rotary scroll 3, and a crankshaft 9 is turned by a motor 13. Besides, the load which works on the shaft part 9a of the shaft 9 is sustained by plain bearings 11, 12 through compression of fluid which has been cooped in by the scrolls 2, 3. And the plain bearing 8, the upper plain bearing 11 and the lower plain bearing 12 of the rotary scroll part have the respective bearing diameters set up so that the side pressures of the bearings 8, 11, 12 will be almost equal by the fluid pressure between the rotary scroll 3 and the stationary scroll 2.

10. 发明专利

JPS57206791A OIL FEED UNIT FOR SCREW COMPRESSOR 失效
公开(公告)号：JPS57206791A
公开(公告)日：1982-12-18
申请号：JP9097281
申请日：1981-06-15
申请人： HITACHI LTD
发明人： HAZAKI EIICHI , NAKAYAMA SUSUMU , URASHIN MASAYUKI , MATSUBARA KATSUMI , ISHII MASAHARU
IPC分类号： F04C18/16 , F04C29/02
摘要： PURPOSE:To properly control the quantity oil feed to bearings, prevent the bearings from a seizure, and improve the volume efficiency by providing a resistance means so that the flow resistance of a branch oil feed passage connecting to bearings of the discharge side is made smaller than that of a branch oil feed passage connecting to a bearings of the suction side. CONSTITUTION:The lubricating oil stored at the inner bottom of an auxiliary casing 11 flows into branch oil feed passages 18, 19 connecting to bearings 8, 10 of the discharge side and to bearings 9, 9 of the suction side under the pressure of screw rotors 2A, 2B, and it is decompressed by fine holes 32, 33 of flow resistance bodies 34, 35 respectively. In this case, the diameter of the fine hole 32 is made larger than that of the fine hole 33 and its flow resistance is smaller, then the degree of decomporession by the flow resistance body 34 is smaller than that by the flow resistance body 35. Thereby, the pressure in a ring groove 20 at the discharge side of the rotor becomes higher than that in a ring groove 21 at the suction side. Therefore, the oil feed can be smoothly supplied to the bearings 8, 10, the quantity of the lubricating oil can be properly supplied under control, a seizure of the bearings can be prevented, and the volume efficiency of the compressor can be improved.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式