公开(公告)号：DE3274780D1

公开(公告)日：1987-01-29

申请号：DE3274780

申请日：1982-12-30

Applicant: IBM

Inventor： BRYANT-JEFFRIES KEITH CHARLES ,  DICKIE HUGH GRAHAM ,  VAUGHAN ERIC VICTOR

IPC: H02K3/00 ,  H02K15/12 ,  H02K33/18 ,  H02K15/02

Abstract: A method of making a rotor, for a dynamo-electric machine, which has a number of arcuately formed rectangular loop coils arranged edgewise in a cylindrical configuration, employs injection moulding. Moulding material is injected between adjacent coils and penetrates between and around them to form an encapsulating framework. Entry of moulding material into the central apertures of the coils is prevented by inserts. By directing the moulding material inwardly, and spacing the coils slightly from the mould core, encapsulant also penetrates behind the coil faces to form a thin skin. By use of a shutter member, which may be an integral end cap, coil terminations can be led out of the mould cavity through apertures in the shutter to protect them from damage during the moulding process.

公开(公告)号：DE3067011D1

公开(公告)日：1984-04-19

申请号：DE3067011

申请日：1980-10-07

Applicant: IBM

Inventor： DICKIE HUGH GRAHAM ,  HEARN ANTHONY ROGER ,  HEATH JOHN STEWART

IPC: G11B21/02 ,  H02K3/47 ,  H02K33/18

公开(公告)号：GB1200572A

公开(公告)日：1970-07-29

申请号：GB1581869

申请日：1969-03-26

Applicant: IBM

Inventor： RIGBEY LEO JOHN ,  CROUCH HOWARD STANLEY ,  DICKIE HUGH GRAHAM ,  METCALFE ALBERT HOWARD

IPC: G11B17/022 ,  G11B17/03 ,  G11B23/03

Abstract: 1,200,572. Magnetic disc cartridges. INTERNATIONAL BUSINESS MACHINES CORP. 26 March, 1969, No. 15818/69. Heading G5R. A cartridge for a magnetic disc assembly 3 comprises a cover 2a having a bottom portion 2b permitting coupling of the assembly to a drive unit and a transducer side opening adapted to be covered by a removable base 4. As shown, one or more discs 3 are clamped by a plate 9 to a hub having a flexible portion 10 locatable over a machine spindle and carrying a magnetic ring 6 co-operable either with magnets 5 in the base, to hold the base and cover together, or with magnets (23, Fig. 4, not shown) in a drive unit, to transmit drive to the discs. A handle 8, foldable into a well in the cover, is raised to lift a bar 13 connected by pillars 14 to a plate 15 so as to engage and lift the clamping plate 9 to thereby break the attraction of the ring 6 and magnets. The handle includes a latch (Figs. 5, 6, not shown) allowing the handle to be raised without the bar 13 for carrying, and a lock preventing the latch from being released when the handle is raised. The cover includes further side apertures (20, 21, Fig. 3, not shown) for brushes and for ensuring correct orientation, and the base has a filtered air vent 38 to assist removal of the base which may then be clamped atop the cover. The cartridge contains a magnetic shield.