专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

121. 实用新型

JPH0356984Y2 失效
公开(公告)号：JPH0356984Y2
公开(公告)日：1991-12-25
申请号：JP9577286
申请日：1986-06-23
IPC分类号： H01H35/34

122. 发明专利

JPH03265410A GAS-INSULATED ELECTRIC APPARATUS 失效
公开(公告)号：JPH03265410A
公开(公告)日：1991-11-26
申请号：JP6307190
申请日：1990-03-13
申请人： MITSUBISHI ELECTRIC CORP
发明人： INAMI KIYOSHI
IPC分类号： H02B13/00 , H01H35/34 , H02G5/06
摘要： PURPOSE:To allow the title apparatus to maintain a sufficient dielectric strength by actuating the apparatus by utilizing the pressure difference between the insulating gas in a pressure vessel and the gas in a small container and maintaining the insulating gas which tends to be liquefied in a gaseous state by energizing a heater by means of an interlocked switch. CONSTITUTION:When the ambient temperature drops, the saturated vapor pressures of SF6 gas 3 and nitrogen gas 14 also drop, but part of the SF6 gas 3 is liquefied to SF6 liquid 4 when the ambient temperature reaches a prescribed level, since the liquefaction temperature of the SF6 gas 3 is considerably lower than that of the nitrogen gas 14. Then the pressure of the SF6 gas 3 becomes lower than that of the nitrogen gas 14 and the pressure equilibrium condition between both sides of a flexible wall 12 is broken and the wall 12 moves towards a pressure vessel 1 side. As a result, a switch 13 is actuated to a turned-on state. Since a heater 15 is energized by means of an AC power source 16 and heats the SF6 liquid 4 collected in the lower section of the pressure vessel 1, the SF6 liquid 4 is again liquefied and the pressure of the SF6 gas 3 rises.

123. 实用新型

JPH0394741U 失效
公开(公告)号：JPH0394741U
公开(公告)日：1991-09-26
申请号：JP328990
申请日：1990-01-17
IPC分类号： H01H35/34

124. 发明专利

JPH03190029A PRESSURE SENSOR 失效
公开(公告)号：JPH03190029A
公开(公告)日：1991-08-20
申请号：JP33460689
申请日：1989-12-22
申请人： JIYAN BARINZU
发明人： JIYAN BARINZU
IPC分类号： G01L7/02 , B60C23/04 , G01L7/08 , G01L17/00 , H01H35/28 , H01H35/34
摘要： PURPOSE: To detect the sudden change of pressure by forming the walls of two pressure chambers out of a gas permeable wall for changing the pressure of the pressure chambers at the prescribed rate and a diaphragm moving to the prescribed position in response to the danger change rate of pressure. CONSTITUTION: The first and the second pressure chambers 38 and 40 are formed out of parts 16 and 15 in a cylindrical housing 12. In addition, one of the walls of the pressure chambers 38 and 40 is formed out of a flexible diaphragm 32, and independently movable between the first position and the second position in response to the danger change rate of pressure in the chamber 38. Also, one of the walls of the pressure chambers 38 and 40 is made of a gas permeable wall. In this case, the gas permeable wall is formed to have permeability so that the pressure of the pressure chambers 38 and 40 becomes uniform for preventing the diaphragm from detecting a pressure change when a pressure change rate in the chamber 38 is low, as well as to have permeability of such an extent as not preventing the travel of the diaphragm 32, upon the change of the pressure at the danger change rate. As a result, a sudden change in the pressure of the pressure chambers 38 and 40 is detected and the safety of a tire is improved.

125. 实用新型

JPH0376346U 失效
公开(公告)号：JPH0376346U
公开(公告)日：1991-07-31
申请号：JP13740389
申请日：1989-11-28
IPC分类号： H01H35/34

126. 实用新型

JPH0334823Y2 失效
公开(公告)号：JPH0334823Y2
公开(公告)日：1991-07-24
申请号：JP6016986
申请日：1986-04-23
IPC分类号： H01H35/28 , H01H35/34 , H01H37/54

127. 实用新型

JPH0330982Y2 失效
公开(公告)号：JPH0330982Y2
公开(公告)日：1991-07-01
申请号：JP128786
申请日：1986-01-08
IPC分类号： H01H35/34 , F24H1/00 , F24H1/46

128. 实用新型

JPH0344843U 失效
公开(公告)号：JPH0344843U
公开(公告)日：1991-04-25
申请号：JP10636689
申请日：1989-09-11
IPC分类号： H01H35/34

129. 发明专利

JPH0357120A PRESSURE SWITCH 失效
公开(公告)号：JPH0357120A
公开(公告)日：1991-03-12
申请号：JP19293789
申请日：1989-07-25
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： IWABUCHI HIROO , UNO TAKASHI
IPC分类号： H01H35/34
摘要： PURPOSE:To obtain a pressure switch resistant to excessive pressures on the positive and negative pressure sides by forming a pin guide into a shape laid along the form of the diaphragm, keeping a fixed minute space such that it never contact with the diaphragm within operating pressure range, and providing a negative pressure stopper keeping the same minute space on the pressure receiving side of the diaphragm. CONSTITUTION:A pin guide 18 laid along the form of a diaphragm 2 with keeping a fixed minute space such that it never contact with the diaphragm 2 by a pressure within operating pressure range and a negative pressure stopper 19 keeping the same minute space on the pressure receiving surface side of the diaphragm 2 are provided. When an excessive pressure is added to the positive pressure side, the diaphragm 2 is pushed onto the pin guide 18, but it is never deformed even if closely pushed, because the diaphragm side surface of the pin guide is suited to the form of the diaphragm. When an excess pressure is added to the negative pressure side similarly, the diaphragm 2 is conversely pushed onto the negative pressure stopper, but the diaphragm is never deformed as the diaphragm surface of the negative pressure stopper is also suited to the form of the diaphragm.

130. 实用新型

JPH035052Y2 失效
公开(公告)号：JPH035052Y2
公开(公告)日：1991-02-08
申请号：JP16818382
申请日：1982-11-06
IPC分类号： H01H35/34 , A61H23/00 , H01H13/20

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