Metal working – Means to assemble or disassemble – Means to assemble electrical device
Reexamination Certificate
2005-07-12
2009-10-13
Trinh, Minh (Department: 3729)
Metal working
Means to assemble or disassemble
Means to assemble electrical device
C029S609000, C029S715000, C029S732000, C029S733000, C029S736000, C083S055000, C083S255000, C083S405000, C310S216006
Reexamination Certificate
active
07600312
ABSTRACT:
A progressive die assembly and method for manufacturing lamina stacks from a strip of substantially planar material, in which at least some of the individual laminas are formed with portions which extend from, or are otherwise not within, the plane of the material strip. The die assembly includes die stations having punches for punching features substantially within the plane of the strip corresponding to individual laminas, such as lamina profiles and lamina interlock features. Additionally, the die assembly also includes at least one forming station which includes a selectively actuable forming tool which is configured to form a lamina portion in the strip which is disposed outwardly of the strip plane, such as by bending a portion of the strip. The die further includes a blanking station including a blanking punch for blanking individual laminas from the strip, and at least one staking punch for engaging lamina interlock features to interlock a blanked lamina with previously blanked laminas in a choke cavity to form an interlocked lamina stack.
REFERENCES:
patent: 1992962 (1935-03-01), Murch
patent: 3107566 (1963-10-01), Archer
patent: 3388582 (1968-06-01), Wesstrom et al.
patent: 4002049 (1977-01-01), Randolph, Sr.
patent: 4597168 (1986-07-01), Oboshi et al.
patent: 4619028 (1986-10-01), Neuenschwander
patent: 4738020 (1988-04-01), Neuenschwander
patent: 5048385 (1991-09-01), Eckert et al.
patent: 5087849 (1992-02-01), Neuenschwander
patent: 5123155 (1992-06-01), Neuenschwander
patent: 5241138 (1993-08-01), Neuenschwander
patent: 5349740 (1994-09-01), Neuenschwander
patent: 5349741 (1994-09-01), Neuenschwander
patent: 5406243 (1995-04-01), Jenkins et al.
patent: 5755023 (1998-05-01), Neuenschwander
patent: 5771565 (1998-06-01), Walters
patent: 5799387 (1998-09-01), Neuenschwander et al.
patent: 5881450 (1999-03-01), Neuenschwander
patent: 6000119 (1999-12-01), Neuenschwander et al.
patent: 6163949 (2000-12-01), Neuenschwander
patent: 6192575 (2001-02-01), Neuenschwander
patent: 6195875 (2001-03-01), Neuenschwander
patent: 6237214 (2001-05-01), Neuenschwander
patent: 6484387 (2002-11-01), Lee et al.
patent: 6745458 (2004-06-01), Neuenschwander
U.S. Appl. No. 10/959,292, filed Oct. 6, 2004 entitled Die Assembly and Method for Manufacutring Lamina Stacks From a Plurality of Separate Stropes of Stock Material.
Lee Barry A.
Neuenschwander Thomas R.
Baker & Daniels LLP
L.H. Carbide Corporation
Nguyen Tai
Trinh Minh
LandOfFree
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