公开(公告)号：US2449396A

公开(公告)日：1948-09-14

申请号：US63247145

申请日：1945-12-03

Applicant: ASEA AB

Inventor： UNO LAMM

IPC: H02M7/06

CPC classification number: H02M7/062

公开(公告)号：US2386322A

公开(公告)日：1945-10-09

申请号：US47144643

申请日：1943-01-06

Applicant: ASEA AB

Inventor： UNO LAMM ,  JAN PLOEN

IPC: H01J13/32 ,  H01J13/50

CPC classification number: H01J13/32 ,  H01J13/50 ,  H01J2893/0088

公开(公告)号：US2130688A

公开(公告)日：1938-09-20

申请号：US72909134

申请日：1934-06-05

Applicant: ASEA AB

Inventor： UNO LAMM

IPC: H01H47/28 ,  H01J13/50

CPC classification number: H01H47/28 ,  H01J13/50 ,  H01J2893/0088

公开(公告)号：US2801357A

公开(公告)日：1957-07-30

申请号：US28402652

申请日：1952-04-24

Applicant: ASEA AB

Inventor： UNO LAMM

IPC: H01J17/56

CPC classification number: H01J17/56

公开(公告)号：US2774031A

公开(公告)日：1956-12-11

申请号：US43817854

申请日：1954-06-21

Applicant: ASEA AB

Inventor： UNO LAMM

IPC: H02P9/12

CPC classification number: H02P9/126

公开(公告)号：US2532107A

公开(公告)日：1950-11-28

申请号：US74780047

申请日：1947-05-13

Applicant: ASEA AB

Inventor： UNO LAMM

IPC: H02M7/51

CPC classification number: H02M7/51

公开(公告)号：US2470556A

公开(公告)日：1949-05-17

申请号：US70985046

申请日：1946-11-14

Applicant: ASEA AB

Inventor： SVEN-ERIC HEDSTROM ,  UNO LAMM

IPC: H02M7/06

CPC classification number: H02M7/066

公开(公告)号：US2429827A

公开(公告)日：1947-10-28

申请号：US43958642

申请日：1942-04-18

Applicant: ASEA AB

Inventor： UNO LAMM

IPC: G05D23/24

CPC classification number: G05D23/2456

公开(公告)号：US2403891A

公开(公告)日：1946-07-09

申请号：US45942142

申请日：1942-09-23

Applicant: ASEA AB

Inventor： UNO LAMM

IPC: H03F9/04

CPC classification number: H03F9/04

公开(公告)号：US2337253A

公开(公告)日：1943-12-21

申请号：US32275040

申请日：1940-03-07

Applicant: ASEA AB

Inventor： UNO LAMM

IPC: G05B11/01 ,  H03F9/02 ,  H03K3/45 ,  H03K17/288

CPC classification number: H03K17/288 ,  G05B11/016 ,  H03F9/02 ,  H03K3/45 ,  Y10T307/951

Abstract: 538,237. Non-contact-making relays. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Feb. 26, 1940, No. 3566. Convention date, March 3, 1939. [Class 40 (iv)] [Also in Group XXXV] An inductance 1 having a saturating winding 14 energized by a controlling direct current and a reaction winding 2 energized by rectifying the current in the inductance winding is arranged to act as a time-delay relay by including in the D.C. circuit an impedance delaying the rise of saturating current. Thus a condenser may be connected in parallel with either the control winding 1 or the reaction winding 2. An inductance may be connected in series with the winding, both being shunted by a resistance. A temperature-dependent resistance may be placed in series or parallel with the winding according as it has a negative or positive temperature co-efficient. The resistance may be heated from the exterior. Fig. 4 shows two mutually heated resistances 18, 19 in separate opposed saturation winding circuits arranged to produce a complex time-delay action. Resistances with positive and negative temperature co-efficients may be included in a bridge circuit with a saturation winding. Specifications 499,960 and 524,501, [Group XXXV], are referred to. The Specification as open to inspection under Sect. 91 comprises also the subject-matter of Specification 564,925, [Group XXXV]. This subject-matter does not appear in.the Specification as accepted.