专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明专利

JP2555419B2 失效
公开(公告)号：JP2555419B2
公开(公告)日：1996-11-20
申请号：JP17309588
申请日：1988-07-12
申请人： HITACHI LTD
发明人： MASUDA KATSUTARO , TAKEDA KAZUTOSHI , SASAKI HIDEKAZU , ONOSE TAKAHISA
IPC分类号： B66B5/02 , B66B1/06 , B66B7/04 , B66B9/04 , B66B11/02

22. 发明专利

JPH04129991A PASSENGER CONVEYER AND RIDING SPOT FLOOR THEREOF AND COMB BODY FOR RIDING SPOT FLOOR 失效
公开(公告)号：JPH04129991A
公开(公告)日：1992-04-30
申请号：JP24754990
申请日：1990-09-19
申请人： HITACHI LTD
发明人： SAITO CHUICHI , TAKIZAWA MASAO , TAKEDA KAZUTOSHI , OJIMA KAZUHIRA , SAITO MITSUO
IPC分类号： B66B23/12 , B66B29/06 , B66B29/08
摘要： PURPOSE:To smoothly move a handcart by setting a length in the footboard moving direction of a tilt part in a riding spot floor, set up in a forward path side on-off getting port of a footboard, to a length or more of one footboard and further horizontally arranging one footboard under the tilt part. CONSTITUTION:In a riding spot floor 7 provided with a comb body 11 in the point end, a tilt part L is formed continuous to a horizontal part H, to decrease a step difference from a footboard 2. A length of this tilt part L is set to the length of a single unit length L0 or more along a moving direction of the footboard 2. Further, at least a single quantity of the footboard 2 in a forward path side is positioned in a horizontal condition below the tilt part L of the riding spot floor 7. In this way, the inverting footboard 2R, even when it is pushed up, is dislocated from the tilt part L and emptied while enabling a handcart or the like to smoothly move by moderating a tilt angle of the tilt part L, and collision of the footboard against the riding spot floor can be avoided.

23. 发明专利

JPH03122195A LOW-ODOR HYDRAULIC OIL 失效
公开(公告)号：JPH03122195A
公开(公告)日：1991-05-24
申请号：JP26140789
申请日：1989-10-06
申请人： KYOSEKI SEIHIN GIJUTSU KENK , HITACHI LTD , HITACHI ELEVATOR ENG & SERVICE
发明人： FUKATSU HIDEO , TAKEDA KAZUTOSHI , ASAKA MASAYA , NAGANUMA KIYOSHI
IPC分类号： C10M169/04 , C10N20/00 , C10N20/02 , C10N30/00 , C10N30/02 , C10N30/10 , C10N30/12 , C10N40/08
摘要： PURPOSE:To obtain the subject hydraulic oil having the original characteristic features of hydraulic oil and free from generation of odor even after the use for a long period by compounding a specific base oil with 4,4-methylenebis-2,6-di- t-butylphenol and s succinimide derivative ester, etc. CONSTITUTION:The objective hydraulic oil is produced by compounding a base oil having a kinetic viscosity of 20-100 cst at 40 deg.C and composed of a mineral oil and/or a poly-alpha-olefin having a 10 vol.% distillation temperature of >=380 deg.C with (A) 0.1-1 wt.% of 4,4-methylenebis-2,6-di-t-butylphenol, (B) 0.03-0.2 wt.% of a partial ester of a succinimide derivative, (C) 0-0.5 wt.% of a condensed olymer of wax and naphtalene and (D) 0-2 wt.% of a polybutene having a molec ular weight of 500-50,000 or an ethylene/propylene copolymer having a molecular weight of 10,000-100,000.

24. 发明专利

JPH01281279A FLOW CONTROL VALVE FOR HYDRAULIC ELEVATOR 失效
公开(公告)号：JPH01281279A
公开(公告)日：1989-11-13
申请号：JP10904388
申请日：1988-05-06
申请人： HITACHI LTD
发明人： SASAKI HIDEKAZU , TAKEDA KAZUTOSHI , HIROSE MASAYUKI
IPC分类号： B66B9/04 , F15B11/04
摘要： PURPOSE:To obtain constant speed without a change of ullage under any oil temperature condition by providing an open type seal for a main control valve. CONSTITUTION:In case of lifting a cage, for example, a pump is driven to conduct pressure oil to a pump port 11. The pressure oil flows out of a notch portion of a lifting control valve 2 to the pump port 11. According to a lifting command, a pilot valve 6 closes a hydraulic circuit, a pilot valve 5 is driven with a certain pulse duration, and pump pressure is stored in a pilot chamber 9. Secondly, when a certain speed is detected, the pilot valve 5 closes the hydraulic circuit to capture pressure oil in the pilot chamber 9, and the lifting control valve 2 is kept at a fixed position, whereby the speed of an elevator can be kept constant. When pressure oil is conducted through a sliding gap between the lifting control valve 2 and the control valve main body 1 from the pump port 11 to the pilot chamber 9, the lifting control valve 2 is moved in the closing direction so that the lifting speed of the elevator is increased. At this time, a seal 14 is worked in the closing direction so that pressure oil is kept from being conducted to the pilot chamber 9.

25. 发明专利

JPH01275385A FLOW RATE CONTROL VALVE FOR HYDRAULIC ELEVATOR 失效
公开(公告)号：JPH01275385A
公开(公告)日：1989-11-06
申请号：JP10395688
申请日：1988-04-28
申请人： HITACHI LTD
发明人： SASAKI HIDEKAZU , TAKEDA KAZUTOSHI , HIROSE MASAYUKI
IPC分类号： B66B1/26 , B66B9/04 , F15B11/04
摘要： PURPOSE:To control the acceleration/deceleration speed of an elevator well at all times by providing a pilot circuit with a throttle valve, whereby operating an increase valve at the same speed even under any pump discharge pressure. CONSTITUTION:With the pilot chamber of an increase valve 12, a pilot circuit is communicated from a pump port and a tank port. With the pilot chamber of a decrease valve 7, a pilot circuit is communicated from a cylinder port and a tank port. On each circuit, electromagnetic valves 3, 4 or 8, 9 are provided. On each circuit in a flow rate control valve for hydraulic elevator, throttle valves 5, 5 or 10, 11 are provided for controlling the acceleration and deceleration of an elevator well at all times.

26. 发明专利

JPH01156292A FLOOR FOR ELEVATOR CAGE 失效
公开(公告)号：JPH01156292A
公开(公告)日：1989-06-19
申请号：JP31526987
申请日：1987-12-15
申请人： HITACHI LTD
发明人： TAKEDA KAZUTOSHI , SASAKI MAMORU , YAMAMOTO TAKEKI
IPC分类号： B66B11/02
摘要： PURPOSE: To reinforce a floorboard, and to facilitate side plate installing work by arranging an installing material having the almost same height as a finishing material in the left/right both edge parts of a car platform and arranging plural side plate holding spring materials on the upper surface of the installing material. CONSTITUTION: The long side part of a cross-sectional 7-shaped installing member 3 is installed in the left/right both edge parts of a floorboard 1 by a rivet 14 so that the head part becomes almost the same height as a finishing material 4. A side plate holding spring material 5 is also installed on the upper surface of the installing member 3 by a rivet 15. By this constitution, rigidity of the floorboard 1 can be enhanced, and weight of the floorboard 1 can be reduced. Since the finishing material 4 and the installing material 3 are formed in the almost same height, a side material 6 can be easily inserted between the spring material 5 and the installing member 3 by sliding it on the surface of the finishing material 4 by removing the lower bending part 6a so as to facilitate work.

27. 发明专利

JPS61188381A ELEVATOR DEVICE 失效
公开(公告)号：JPS61188381A
公开(公告)日：1986-08-22
申请号：JP2800285
申请日：1985-02-15
申请人： HITACHI LTD , HITACHI ELEVATOR ENG
发明人： NARA TOSHIHIKO , TAKEDA KAZUTOSHI , SUZUKI SHIGETAKA
IPC分类号： B66B7/00

28. 发明专利

JPS5952151B2 失效
公开(公告)号：JPS5952151B2
公开(公告)日：1984-12-18
申请号：JP9404680
申请日：1980-07-11
申请人： HITACHI LTD
发明人： TAKAHOSHI TAKEO , TAKEDA KAZUTOSHI
IPC分类号： B66B1/46 , B66B1/48 , B66B1/50 , B66B5/08 , B66B11/02

29. 发明专利

JPS5986585A VIBRATION PREVENTIVE STRUCTURE OF HOISTING MACHINE FOR ELEVATOR 失效
公开(公告)号：JPS5986585A
公开(公告)日：1984-05-18
申请号：JP19593582
申请日：1982-11-10
申请人： HITACHI LTD
发明人： TAKEDA KAZUTOSHI , NARA TOSHIHIKO , OOTA MASATOSHI , SATOU AKIHIRO , SAWAHATA OSAMU
IPC分类号： B66B11/04

30. 发明专利

JPS57199781A CAGE CHAMBER FOR ELEVATOR 失效
公开(公告)号：JPS57199781A
公开(公告)日：1982-12-07
申请号：JP8439581
申请日：1981-06-03
申请人： HITACHI LTD
发明人： YAMAMOTO TAKEKI , MASUDA KATSUTAROU , TAKEDA KAZUTOSHI
IPC分类号： B66B11/02

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