Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2006-08-08
2006-08-08
Nguyen, Tran (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S156130, C310S043000, C029S596000, C029S597000, C029S598000
Reexamination Certificate
active
07088024
ABSTRACT:
A stator of an electric motor is formed by inserting pre-formed magnets on a cylinder having anchors and plastic is molded around the magnets and anchors to secure the magnets to a surface of the cylinder, forming a cylinder/magnet assembly. A pilot feature is formed in at least one endwall of the plastic molding when it is molded. An end plate is located with respect to the cylinder/magnet assembly by mating a corresponding pilot feature of the end plate with the pilot feature in the endwall of the plastic molding. In another aspect of the invention, magnets are inserted into magnet receiving pockets of a cylinder and plastic molded therearound with the magnet pockets holding the magnets in place during molding of the plastic. In another aspect of the invention, the north and south poles of a cylinder and magnet assembly have unequal distribution angles. In another aspect of the invention, the north and south poles of a cylinder and magnet assembly have unequal numbers of magnets. In another aspect of the invention, the anchors are also formed as flux spreaders. In another aspect of the invention, the stator is used in a power tool.
REFERENCES:
patent: 787184 (1905-04-01), Jacobson
patent: 3258623 (1966-06-01), Phelon et al.
patent: 3296471 (1967-01-01), Cochardt
patent: 3390291 (1968-06-01), Eberline et al.
patent: 3422294 (1969-01-01), Parker
patent: 3436815 (1969-04-01), Sheets
patent: 3445692 (1969-05-01), Kato
patent: 3445693 (1969-05-01), Crawshaw et al.
patent: 3510707 (1970-05-01), Stone
patent: 3710291 (1973-01-01), Nicoud
patent: 3766418 (1973-10-01), Apostoleris
patent: 3789250 (1974-01-01), Macoit et al.
patent: 3887826 (1975-06-01), Apostoleris
patent: 4012651 (1977-03-01), Burson
patent: 4015154 (1977-03-01), Tanaka et al.
patent: 4155021 (1979-05-01), Corbach et al.
patent: 4159562 (1979-07-01), Liptak et al.
patent: 4209724 (1980-06-01), Periou
patent: 4219752 (1980-08-01), Katou
patent: 4260916 (1981-04-01), Theissig
patent: 4309815 (1982-01-01), Schmitt et al.
patent: 4323806 (1982-04-01), Aoki
patent: 4383192 (1983-05-01), Sikorra
patent: 4453097 (1984-06-01), Lordo
patent: 4464595 (1984-08-01), Hamano et al.
patent: 4573258 (1986-03-01), Ito et al.
patent: 4591749 (1986-05-01), Gauthier et al.
patent: 4594525 (1986-06-01), Stokes
patent: 4625392 (1986-12-01), Stokes
patent: 4665333 (1987-05-01), Heim et al.
patent: 4683393 (1987-07-01), Stokes
patent: 4724348 (1988-02-01), Stokes
patent: 4757603 (1988-07-01), Stokes
patent: 4769624 (1988-09-01), Merritt et al.
patent: 4777717 (1988-10-01), Okamoto
patent: 4792712 (1988-12-01), Stokes
patent: 4793054 (1988-12-01), Abbratozzato et al.
patent: 4795932 (1989-01-01), Long
patent: 4801834 (1989-01-01), Stokes
patent: 4827173 (1989-05-01), Corbach et al.
patent: 4850100 (1989-07-01), Stokes
patent: 4873461 (1989-10-01), Brennan et al.
patent: 4877986 (1989-10-01), Shimizu
patent: 4879485 (1989-11-01), Tassinario
patent: 4910861 (1990-03-01), Dohogne
patent: 4916344 (1990-04-01), Hammer et al.
patent: 4918801 (1990-04-01), Schwarz et al.
patent: 4953284 (1990-09-01), Hammer et al.
patent: 4954736 (1990-09-01), Kawamoto et al.
patent: 4973872 (1990-11-01), Dohogne
patent: 5038460 (1991-08-01), Ide et al.
patent: 5075605 (1991-12-01), Hendricks et al.
patent: 5121021 (1992-06-01), Ward
patent: 5264749 (1993-11-01), Maeda et al.
patent: 5268607 (1993-12-01), McManus
patent: 5341561 (1994-08-01), Schorm et al.
patent: 5353491 (1994-10-01), Gentry et al.
patent: 5475276 (1995-12-01), Shiga et al.
patent: 5584114 (1996-12-01), McManus
patent: 5646467 (1997-07-01), Floresta et al.
patent: 5705970 (1998-01-01), Nishida et al.
patent: 5714827 (1998-02-01), Hansson
patent: 5731646 (1998-03-01), Heinze et al.
patent: 5806169 (1998-09-01), Trago et al.
patent: 5811908 (1998-09-01), Iwata et al.
patent: 5828152 (1998-10-01), Takeda et al.
patent: 5831364 (1998-11-01), Buse
patent: 5845389 (1998-12-01), Roberts et al.
patent: 5861695 (1999-01-01), Brassard
patent: 5874794 (1999-02-01), Trammell et al.
patent: 5942827 (1999-08-01), Neumann et al.
patent: 5960532 (1999-10-01), Hill
patent: 5998902 (1999-12-01), Sleder, Sr. et al.
patent: 6002185 (1999-12-01), Nakao et al.
patent: 6006416 (1999-12-01), Katagiri
patent: 6020661 (2000-02-01), Trago et al.
patent: 6058594 (2000-05-01), Neumann et al.
patent: 6060799 (2000-05-01), McManus et al.
patent: 6177751 (2001-01-01), Suzuki et al.
patent: 6191516 (2001-02-01), Froehlich et al.
patent: 6281612 (2001-08-01), Asao et al.
patent: 6522042 (2003-02-01), Du et al.
patent: 6 601 157 (1969-02-01), None
patent: 19 41 169 (1970-04-01), None
patent: 1 909 063 (1971-01-01), None
patent: 23 02 947 (1973-08-01), None
patent: 23 42 499 (1975-03-01), None
patent: 76 08 871 (1976-07-01), None
patent: 25 05 937 (1976-08-01), None
patent: 75 04 284 (1977-10-01), None
patent: 28 27 068 (1979-01-01), None
patent: 27 35 778 (1979-03-01), None
patent: 28 35 441 (1980-02-01), None
patent: 28 55 986 (1980-07-01), None
patent: 30 23 743 (1982-01-01), None
patent: 31 35 217 (1983-04-01), None
patent: 84 27 703 (1986-03-01), None
patent: 35 10 845 (1986-10-01), None
patent: 39 13 618 (1989-11-01), None
patent: 40 33 454 (1992-04-01), None
patent: 42 13 374 (1993-10-01), None
patent: 42 40 995 (1994-06-01), None
patent: 195 17 668 (1996-11-01), None
patent: 197 05 432 (1998-08-01), None
patent: 198 61 024 (1999-09-01), None
patent: 196 14 217 (2000-05-01), None
patent: 199 11 261 (2000-09-01), None
patent: 199 42 029 (2001-03-01), None
patent: 199 51 594 (2001-05-01), None
patent: 101 03 434 (2001-08-01), None
patent: 100 09 151 (2001-09-01), None
patent: 100 51 308 (2001-10-01), None
patent: 100 53 692 (2002-05-01), None
patent: 101 00 717 (2002-07-01), None
patent: 101 18 275 (2002-10-01), None
patent: 102 16 098 (2003-10-01), None
patent: 102 19 190 (2003-11-01), None
patent: 102 24 867 (2003-12-01), None
patent: 203 13 943 (2004-02-01), None
patent: 0 143 693 (1985-06-01), None
patent: 0 218 477 (1987-04-01), None
patent: 0 410 048 (1991-01-01), None
patent: 0 505 498 (1992-09-01), None
patent: 0 558 746 (1993-09-01), None
patent: 0 569 594 (1993-11-01), None
patent: 0 809 878 (1998-10-01), None
patent: 1 588 988 (1970-03-01), None
patent: 2 445 053 (1980-07-01), None
patent: 2 518 927 (1983-07-01), None
patent: 2 617 344 (1988-12-01), None
patent: 2617344 (1988-12-01), None
patent: 1 389 519 (1973-11-01), None
patent: 1 576 917 (1980-10-01), None
patent: 2202170 (1988-09-01), None
patent: 50-68807 (1975-06-01), None
patent: 54-164828 (1979-11-01), None
patent: 55-56476 (1980-04-01), None
patent: 64-64546 (1989-03-01), None
patent: 3-77247 (1991-08-01), None
patent: 3-265437 (1991-11-01), None
patent: 3-293943 (1991-12-01), None
patent: 09039027 (1997-02-01), None
patent: 10-256031 (1998-09-01), None
patent: 11-299147 (1999-10-01), None
patent: 2000-152535 (2000-05-01), None
patent: 2000-324733 (2000-11-01), None
patent: 2001-69703 (2001-03-01), None
patent: 2001-169485 (2001-06-01), None
patent: WO 97/05687 (1997-02-01), None
patent: WO 97/45917 (1997-12-01), None
patent: WO 01/56134 (2001-08-01), None
patent: WO 01/080400 (2001-10-01), None
Composite magnet holder simplifies motor assembly. Retrieved Nov. 26, 2001 from http://www.machinedesign.com/content/columns/articleloader.asp?main=sitesearch&origA.
European Search Report EP 1237252 A3.
International Search Report PCT/US02/05029, ISA/US—mailed Sep. 6, 2002.
Semones, Burley C., Application of high-energy permanent-magnet materials to servomotors, J. Appl. Phys. 57(1), Apr. 15, 1985, pp. 3817-3819.
Agnes Michael
Boyce Allyn
Du Hung
Ortt Earl
Verbrugge Brandon
Black & Decker Inc.
Harness & Dickey & Pierce P.L.C.
Nguyen Tran
LandOfFree
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