|
DE290450C
(it)
*
|
|
|
|
|
|
US1366731A
(en)
*
|
1919-03-31 |
1921-01-25 |
Baker Ice Machine Company |
Automatic electric switch
|
|
US1678129A
(en)
*
|
1927-04-13 |
1928-07-24 |
Packard Electric Company |
Tap changer
|
|
US1709724A
(en)
*
|
1928-07-21 |
1929-04-16 |
Westinghouse Electric & Mfg Co |
Transformer-tap-changing system
|
|
BE367607A
(it)
*
|
1929-02-08 |
|
|
|
|
DE526809C
(de)
*
|
1930-01-24 |
1931-06-10 |
Bernhard Jansen Dr Ing |
Lastumschalter fuer Anzapftransformatoren mit zwei gegenlaeufig bewegten Schaltern
|
|
US1867147A
(en)
*
|
1930-06-10 |
1932-07-12 |
Bbc Brown Boveri & Cie |
Tap changing switch and system
|
|
DE580086C
(de)
*
|
1931-10-02 |
1933-07-05 |
Bernhard Jansen Dr Ing |
Stufenwaehler
|
|
FR764405A
(fr)
*
|
1933-03-10 |
1934-05-22 |
Anker Werke Ag |
Dispositif de fermeture du couvercle du crochet des machines à coudre
|
|
US2026356A
(en)
*
|
1934-03-31 |
1935-12-31 |
Gen Electric |
Electric switch mechanism
|
|
US2231627A
(en)
*
|
1934-04-20 |
1941-02-11 |
Jansen Bernhard |
Step switch device for regulating transformers
|
|
US2046979A
(en)
*
|
1934-10-09 |
1936-07-07 |
Gen Electric |
Transformer switching arrangement
|
|
US2009383A
(en)
*
|
1934-11-01 |
1935-07-30 |
Gen Electric |
Transformer tap-changing apparatus
|
|
US2222719A
(en)
*
|
1939-07-08 |
1940-11-26 |
Gen Electric |
Air blast circuit breaker
|
|
DE895028C
(de)
*
|
1943-04-06 |
1953-10-29 |
Siemens Ag |
Synchron arbeitende Ausloesevorrichtung fuer einen Lastschalter eines Stufentransformators
|
|
GB604632A
(en)
*
|
1945-11-29 |
1948-07-07 |
John Fowler |
Improvements relating to regulator switching arrangements for polyphase electrical systems
|
|
DE915242C
(de)
*
|
1946-01-16 |
1954-11-02 |
Ct D Etudes M B A |
Elektromechanische Vorrichtung zur Steuerung vorbestimmter Verschiebungen von Teilen und mit dieser Vorrichtung zusammengesetzte Einrichtungen
|
|
US2470625A
(en)
*
|
1947-09-20 |
1949-05-17 |
Westinghouse Electric Corp |
No-load tap changer
|
|
NL141798B
(nl)
*
|
1948-08-09 |
|
Schrauben & Drahtlager Gmbh |
Permanent magneetsysteem voor het afzonderen en verzamelen van magnetiseerbare deeltjes uit vloeistoffen of gassen.
|
|
NL78133C
(it)
*
|
1948-10-08 |
|
|
|
|
US2513677A
(en)
*
|
1949-03-05 |
1950-07-04 |
Mcgraw Electric Co |
Multiple step switch
|
|
DE866208C
(de)
*
|
1950-07-30 |
1953-02-09 |
Siemens Ag |
Lichtbogenfrei arbeitender Schalter, insbesondere Lastschalter fuer Stufenregeleinrichtungen von Transformatoren, Drosseln u. dgl.
|
|
US2680790A
(en)
*
|
1951-03-07 |
1954-06-08 |
Jansen Bernhard |
Load changeover switch for tapped transformers using a combination of contact movements
|
|
US2675519A
(en)
*
|
1951-12-21 |
1954-04-13 |
Allis Chalmers Mfg Co |
Tap changing under load apparatus with paralleling reactors common to all taps
|
|
US2680164A
(en)
*
|
1952-03-19 |
1954-06-01 |
Gen Electric |
Contact speed control in springdriven step type switches
|
|
US2915720A
(en)
*
|
1954-01-13 |
1959-12-01 |
Elin Union Ag Fur Elek Sche In |
Transformer with a bell-shaped cover and an on-load-tap-changing device
|
|
FR1185131A
(fr)
*
|
1957-10-24 |
1959-07-30 |
Acec |
Commutateur de réglage sous charge
|