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
GB224450A
Inventor
Edward Barnabas Angold
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.)
THERMIONIC PRODUCTS Ltd
Original Assignee
THERMIONIC PRODUCTS Ltd
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 THERMIONIC PRODUCTS LtdfiledCriticalTHERMIONIC PRODUCTS Ltd
Priority to GB224450ApriorityCriticalpatent/GB689101A/en
Publication of GB689101ApublicationCriticalpatent/GB689101A/en
G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
G11B5/127—Structure or manufacture of heads, e.g. inductive
G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
Abstract
689,101. Magnetic recording and reproducing apparatus. THERMIONIC PRODUCTS. Ltd. May 9, 1951 [Jan. 27, 1950], No. 2244/50. Class 40 (ii). A transducer for magnetic recording has its pole pieces 3 reinforced with layers 11, 12 of a non-magnetic material of such a nature that wear on the pole tips 7 of the pole pieces 3 is substantially reduced.
GB224450A1950-01-271950-01-27Improvements in or relating to electromagnetic transducers
ExpiredGB689101A
(en)