公开(公告)号：US3578578A

公开(公告)日：1971-05-11

申请号：US3578578D

申请日：1968-09-30

Applicant: ASEA AB

Inventor： KRUSENSTIERNA OTTO VON

IPC: G01D21/02 ,  G01N27/407 ,  G01N27/416 ,  G01N33/20 ,  G01N27/46

CPC classification number: G01N27/4111

Abstract: MEASURING MEANS FOR MEASURING THE EXYGEN CONTENT IN A LIQUID OR GASEOUS MEDIUM, COMPRISIG A SOLID OXYGEN ION CONDUCTING ELECTROLYTE ARRANGED IN CONTACT WITH A REFERENCE SYSTEM HAVING KNOWN OXYGEN POTENTIAL AND CONSISTING OF A METAL AND ITS OXIDE WHICH IS ARRANGED IN CONTACT WITH A CURRENT COLLECTOR. THE CURRENT COLLECTOR IS

DESIGNED AS A CARRYING ELEMENT FOR THE REFERENCE SYSTEM AND THE ELECTROLYTE WHICH ARE BOTH ARRANGED AS LAYERS ON THE CURRENT COLLECTOR WITH THE ELECTROLYTE OUTSIDE THE REFERENCE SYSTEM.

公开(公告)号：US3577048A

公开(公告)日：1971-05-04

申请号：US3577048D

申请日：1968-12-26

Applicant: ASEA AB

Inventor： NORDIN TORE

IPC: B60L3/10 ,  B61C15/08

CPC classification number: B60L3/10 ,  B60L2200/26 ,  Y02T10/646 ,  Y02T10/648

Abstract: A driving system for an electric locomotive has a plurality of parallel-connected direct current motors each connected to a pair of wheels and connected by their armature windings to a variable alternating current source by a rectifier. Each motor has a field winding connected to a control current source to receive signals from the source to reduce the field. Each armature circuit feeds to a selection device a magnitude proportional to the armature current. The selection device selects the greatest of these magnitudes, which is compared with each of the magnitudes proportional to the armature current, which signal is then fed to the field winding. The control signal is maintained below a certain maximum value.

公开(公告)号：US3571854A

公开(公告)日：1971-03-23

申请号：US3571854D

申请日：1967-12-26

Applicant: ASEA AB

Inventor： LUNDSTROM HANS

IPC: B22F3/02 ,  B29C43/10 ,  B30B11/00 ,  B29C3/00

CPC classification number: B29C43/10 ,  B22F3/02 ,  B29C2043/3628 ,  B29C2043/3652 ,  B29K2303/06 ,  B29L2023/00 ,  B30B11/001

Abstract: A pressed powder body is formed by introducing powder into a space on the outside of a mandrel and inside a rubber sleeve to the outside of which fluid under pressure is supplied. Punches move downward from above and upward from below into the space between the mandrel and sleeve to precompact the powder.

公开(公告)号：US3570189A

公开(公告)日：1971-03-16

申请号：US3570189D

申请日：1968-05-01

Applicant: ASEA AB

Inventor： KEDING OLLE ,  FAHLMAN PER-OLA

IPC: B23Q15/10 ,  B24B47/18 ,  B24B5/00

CPC classification number: B23Q15/10 ,  B24B47/18

Abstract: IN A PROTECTIVE DEVICE FOR A GRINDING MACHINE HAVING A MOTOR DRIVING A GRINDING WHEEL, THE SPEED OF ROTATION OF THE GRINDING WHEEL IS MAINTAINED SUBSTANTIALLY INVERSELY PROPORTIONAL BY A RELAY WHICH IS RESPONSIVE TO THE DIFFERENCE BETWEEN TWO SIGNALS WHICH VARY WITH THE DIAMETER AND SPEED RESPECTIVELY. A SECOND RELAY IS FURNISHED ADDITIONALLY WITH A CONSTANT SIGNAL AND OPENS A SWITCH IN THE CIRCUIT TO THE MOTOR WHEN THE DIFFERENCE BETWEEN THE FIRST TWO SIGNALS IS GREATER THAN THE THIRD SIGNAL. A TIME-DELAY RELAY IS PROVIDED WHICH, WHEN THE MOTOR STARTER BUTTON IS OPERATED, BYPASSES THIS SWITCH FOR A LONG ENOUGH TIME TO ALLOW THE MOTOR TO COME UP TO MINIMUM SPEED.

公开(公告)号：US3566211A

公开(公告)日：1971-02-23

申请号：US3566211D

申请日：1967-10-23

Applicant: ASEA AB

Inventor： SVEDBERG PER

IPC: H01L21/18 ,  H01L23/58 ,  H01L29/00 ,  H01L29/06 ,  H01L29/36 ,  H01L29/74 ,  H01L29/76 ,  H01L9/00 ,  H01L11/00 ,  H01L13/00

CPC classification number: H01L29/74 ,  H01L21/18 ,  H01L23/58 ,  H01L29/00 ,  H01L29/06 ,  H01L29/36 ,  H01L29/76 ,  H01L2224/4918 ,  H01L2924/1301 ,  H01L2924/3011 ,  H01L2924/00

Abstract: A thyristor is constituted by a body having at least four alternately P conducting and N conducting layers with two main electrodes for the load current; one of the layers has a connection for ignition current; one part of the body has a blocking voltage lower than that of the other parts; an auxiliary contact applied on such part is connected to the ignition current connection so that, when the blocking voltage of such part is exceeded, current is supplied to the ignition current connection.

公开(公告)号：US3560688A

公开(公告)日：1971-02-02

申请号：US3560688D

申请日：1969-05-12

Applicant: ASEA AB

Inventor： BACHLER SVEN

IPC: H01H1/38 ,  H01H1/44 ,  H01H1/50

CPC classification number: H01H1/385

Abstract: A contact arrangement for circuit breakers includes a movable contact plug and a stationary sheath contact. In the sheath contact, a plurality of contact fingers are arranged in ring formation and are pressed against the contact plug by means of leaf springs punched out of sheet material. Each leaf spring is loosely inserted in a longitudinal groove in the associated contact finger in such a way that the spring action occurs in the plane of the spring.

公开(公告)号：US3536133A

公开(公告)日：1970-10-27

申请号：US3536133D

申请日：1968-05-01

Applicant: ASEA AB

Inventor： MATTSSON HUGO ,  MELLGREN GUNNAR

IPC: H01L23/473 ,  H01L25/03 ,  F28F7/00 ,  H01L1/12

CPC classification number: H01L23/473 ,  H01L25/03 ,  H01L2924/0002 ,  Y10S257/909 ,  H01L2924/00

公开(公告)号：US3532939A

公开(公告)日：1970-10-06

申请号：US3532939D

申请日：1968-06-17

Applicant: ASEA AB

Inventor： AVIANDER STIG

IPC: H01H47/18 ,  H03K17/28 ,  H03K17/292 ,  H03K17/26

CPC classification number: H01H47/18 ,  H03K17/28 ,  H03K17/292

公开(公告)号：US3529069A

公开(公告)日：1970-09-15

申请号：US3529069D

申请日：1968-10-03

Applicant: ASEA AB

Inventor： FREDRIKSSON BENGT ,  FOLGERO KARE

IPC: C21C7/10 ,  H05B5/00

CPC classification number: C21C7/10 ,  Y02P10/212

公开(公告)号：US3526286A

公开(公告)日：1970-09-01

申请号：US3526286D

申请日：1968-12-05

Applicant: ASEA AB

Inventor： FLINTH RUNE

IPC: G01G23/06 ,  G01L1/26 ,  G01G5/04 ,  G01G7/00 ,  G01G21/10

CPC classification number: G01L1/26 ,  G01G23/06