Electrical generator or motor structure – Dynamoelectric – Linear
Reexamination Certificate
2007-06-12
2007-06-12
Lam, Thanh (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Linear
Reexamination Certificate
active
11018980
ABSTRACT:
An improved linear hybrid brushless servo motor is disclosed. The motor comprises a forcer and a platen. The forcer has a plurality of stacks, permanent magnets, and coils which form a three-phase motor. The platen has a low cost ferromagnetic steel plate. The stacks, permanent magnets and phase coils of the forcer are specially designed to have the optimal electromagnetic coupling between the forcer and platen to achieve a high force density servomotor. In one embodiment, two E-shaped stacks are used to physically couple two phases to substantially minimize the unexpected cogging force and force ripple. Three other forcer configurations which achieve a three-phase, highly cost effective and high force density linear hybrid brushless servo motor are also disclosed.
REFERENCES:
patent: RE27436 (1972-07-01), Sawyer
patent: 3878411 (1975-04-01), Nocito et al.
patent: 3950663 (1976-04-01), Mead
patent: 4078192 (1978-03-01), Fultz
patent: 4315171 (1982-02-01), Schaeffer
patent: 4335338 (1982-06-01), Sawyer
patent: 4404509 (1983-09-01), Hartwig
patent: 4509001 (1985-04-01), Wakabayashi et al.
patent: 4578622 (1986-03-01), Nakagawa et al.
patent: 4661730 (1987-04-01), Maruyama et al.
patent: 4725750 (1988-02-01), Welch
patent: 4749921 (1988-06-01), Chitayat
patent: 4757220 (1988-07-01), Pouillang
patent: 4912746 (1990-03-01), Oishi
patent: 4972108 (1990-11-01), Venturini
patent: 5010262 (1991-04-01), Nakagawa et al.
patent: 5218250 (1993-06-01), Nakagawa
patent: 5528210 (1996-06-01), Huang et al.
patent: 5642013 (1997-06-01), Wavre
patent: 5723917 (1998-03-01), Chitayat
patent: 5910691 (1999-06-01), Wavre
patent: 5965962 (1999-10-01), Hinds
patent: 6069417 (2000-05-01), Yuan et al.
patent: 6160327 (2000-12-01), Wang
patent: 6215260 (2001-04-01), Hinds
patent: 6242822 (2001-06-01), Strothmann
patent: 6522035 (2003-02-01), Smit
patent: 6674186 (2004-01-01), Yajima et al.
patent: 6798089 (2004-09-01), Smit
patent: 7148590 (2006-12-01), Lampson
patent: 2005/0173992 (2005-08-01), Yang et al.
Heilig John Andrew
Lin Huai
Baldor Electric Company
Lam Thanh
Thompson & Coburn LLP
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