Metal working – Method of mechanical manufacture – Electrical device making
Patent
1978-07-14
1980-04-22
Hall, Carl E.
Metal working
Method of mechanical manufacture
Electrical device making
29605, 29609, 310 15, 310 30, H02K 1502
Patent
active
041987438
ABSTRACT:
A method for forming a magnetic core for the magnetic circuit of a linear-motor compressor suitable for use in a refrigerant system. The compressor includes a conical armature which reciprocates in a complementary air-gap under the influence of an electromagnetic circuit and a pair of linear complementary return springs connected to the armature between the compressor piston and outboard bearing. The electromagnetic circuit includes a pair of abutting convoluted loops of spirally wound magnetic strip material with a conical air-gap fabricated in the area of abutment. The magnetic core is formed by forming a pair of stacks of magnetic strips having diverse lengths, bending each stack to form a generally C-shaped core section having a generally semi-circular air-gap space defined by the ends of the strips, fastening the C-shaped stacks in opposed abutment to form a generally cylindrical air-gap, and then machining the air-gap into the desired conical shape.
REFERENCES:
patent: 2906977 (1959-09-01), Rowley et al.
patent: 2968087 (1961-01-01), Thompson et al.
patent: 3542495 (1976-11-01), Barthalon
patent: 3955272 (1976-05-01), Hallerback
Hall Carl E.
Jeffers Albert L.
Tecumseh Products Company
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