Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1980-05-28
1982-10-12
Duggan, Donovan F.
Electrical generator or motor structure
Dynamoelectric
Rotary
310104, H02K 4900
Patent
active
043541259
ABSTRACT:
The invention is concerned with a magnetically coupled arrangement for a driving and a driven member, which arrangement is operable by a pressure medium and is used in a conveying system. A slidable piston (16) within a tube (10) has an arrangement of annular magnets (20) provided at each end with sealing and sliding members (24, 26). A driven assembly (18) slidable on the outer surface of the tube (10) has an arrangement of annular magnets (32) corresponding to the magnets (20) and provided at each end with a sliding ring (44). The members (24, 26, 44) prevent ingress of foreign bodies to the magnet locations, and consequently enable the spacing between the magnets and the tube (10) to be very small. A good magnetic coupling is achieved resulting in effective transmission of power. Several pistons (16) abutting one another can be used for conveying heavy loads.
REFERENCES:
patent: 1697142 (1929-01-01), Roller
patent: 2898485 (1959-08-01), Richter et al.
patent: 3391289 (1968-07-01), Danilewicz et al.
patent: 3462666 (1969-08-01), Martinek
patent: 3483412 (1969-12-01), Bakker et al.
patent: 3847502 (1974-11-01), Isbell
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