Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB20999/30A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Landis and Gyr AG
Original Assignee
Landis and Gyr AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Landis and Gyr AGfiledCriticalLandis and Gyr AG
Publication of GB354954ApublicationCriticalpatent/GB354954A/en
G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
G01R11/36—Induction meters, e.g. Ferraris meters
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Iron Core Of Rotating Electric Machines
(AREA)
Permanent Magnet Type Synchronous Machine
(AREA)
Abstract
354,954. Supply meters. LANDIS ET GYR, SOC. ANON., 1, Hofstrasse, Zug, Switzerland. July 11, 1930, No. 20999. Convention date, Aug. 24, 1929. Drawings to Specification. [Class 37.] In order to improve the curve of errors of an induction motor meter, the core of the series driving magnet is formed at least in part of electrolytic iron. Either the whole of the laminations of the current core or a part, for example, one-third, may be made of electrolytic iron. The Specification as open to inspection under Sect. 91 (3) (a) states also that other materials of high initial permeability, such as an alloy of 80À5. per cent of nickel and 19À5 per cent of iron, may be employed instead of the electrolytic iron. This subject-matter does not appear in the Specification as accepted.
GB20999/30A1929-08-241930-07-11Improvements relating to the driving systems of ferraris measuring instruments, moreespecially of electricity meters
ExpiredGB354954A
(en)
Improvements in or relating to electromagnetic responsive devices for use in watthour meters or other electromagnetic measuring instruments of the induction type