Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1991-06-25
1993-03-16
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 68R, 310 71, 310 91, 310180, 310207, H02K 1300
Patent
active
051947749
ABSTRACT:
An electric-powered tool comprises: a housing; and a brush motor contained in the housing, having: brush holders, each of brush holders holding a carbon brush; and brush terminals, made of an electrical conductive and elastic material having at least one blade portion, a palm portion, and an arm portion, for providing electrical connection thereof to the brushes through the brush holder by catching and griping the brush holder by the blade and the palm portions, the arm portion extending from the palm portion to an end where a fixing portion is provided, each of the brush terminals being fixed by the fixing portion with a positional offset to develop a contact pressure between the palm portion and the brush holder. Further, the arm portion is further extending over the fixing portion to form a connecting portion. On the other hand, one end of a field coil is connected to a connector. Thus, the brush holder is connected to the field coil through the connection portion and the connector.
REFERENCES:
patent: 670119 (1901-03-01), Trier
patent: 3942056 (1976-03-01), Gehring, Jr.
patent: 4090098 (1978-05-01), Kranzler
patent: 4370579 (1983-01-01), Kobayashi
patent: 4613781 (1986-09-01), Sanders
patent: 4851730 (1989-07-01), Fushiya
patent: 4963779 (1990-10-01), Lentino
patent: 4978877 (1990-12-01), Quirijnen
McGraw-Hill Encyclopedia of Science and Technology, 3rd Edition; No Publication Date; 2 pages; (Exhibit "A").
McGraw-Hill Dictionary of Scientific and Technical Terms by D. N. Lapedes, (No Month) 1974; New York, St. Louis, San Francisco.
Abo Kimitaka
Kikuchi Junichi
Osada Yoshio
Hitachi Koki Company Limited
Skudy R.
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