Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1992-08-18
1994-11-29
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310233, 310234, 310236, H02K 1304
Patent
active
053693264
ABSTRACT:
Carbon commutator segments are secured to a base member by means of integral anchor pieces disposed within axially extending, cruciform-section slots formed in the outer cylindrical surface of an insulating base member. Elongate contact members having lateral edges seated in lateral parts of the slots are embedded in the anchor pieces and are each provided, at one end, with a terminal for connection to an armature winding lead wire. The carbon segments and the integral anchor pieces are formed by enclosing the base member, together with assembled contact members, in a mould and then injecting a mouldable mixture of carbon powder and carrier material into space between the mould and the assembly. When the injection moulded layer has solidified, an annular-section outer portion of this injection moulded layer is divided into segments by means of axially-extending radial cuts. Holes, formed in a central part of each contact member, facilitate the flow of mouldable mixture and ensure that the mouldable mixture fills that part of each slot which is not occupied by the contact member disposed within slot.
REFERENCES:
patent: 3473062 (1969-10-01), Forste
patent: 3473063 (1969-10-01), Forste
patent: 3777367 (1973-12-01), Kalagidis
patent: 4349384 (1982-09-01), Weinert
patent: 4769627 (1988-09-01), Baines
patent: 4876474 (1989-10-01), Wang
patent: 4975612 (1990-12-01), Strobl
patent: 5008577 (1991-04-01), Wang
Johnson Electric S.A.
Skudy R.
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