Cutting – Processes – Plural cutting steps
Reexamination Certificate
2007-07-31
2007-07-31
Choi, Stephen (Department: 3724)
Cutting
Processes
Plural cutting steps
C083S255000, C083S405000, C083S418000, C083S618000
Reexamination Certificate
active
07699479
ABSTRACT:
A progressive die for shaping a consecutive series of discs from a strip of relatively stiff material, comprising a series of adjacent die stations including a slot cutting station, a plurality of intermediate stations, and a cut off station, the slot cutting station including cutting means for forming at least one laterally extending slot between adjacent discs while leaving at least one narrow deformable bridge connecting the adjacent discs, the intermediate stations including cutting means for shaping the discs, and the cut off station including cutting means for severing the bridge. A strip of relatively stiff material includes a series of consecutive discs formed along the length thereof, at least two adjacent discs having at least one laterally extending slot therebetween and at least one narrow deformable bridge connecting the adjacent discs. A process for die punching a series of shaped discs from a strip of relatively stiff material comprises the steps of cutting at least one slot through the strip between each pair of adjacent sections and forming at least one narrow deformable bridge connecting each pair of adjacent discs, shaping the discs between the bridges, and severing the bridges.
REFERENCES:
patent: 1818150 (1931-08-01), Murch
patent: 1916379 (1933-07-01), Leland
patent: 1962431 (1934-06-01), Daley
patent: 1992962 (1935-03-01), Murch
patent: 2302571 (1942-11-01), Ray
patent: 2329392 (1943-09-01), Crane
patent: 2386147 (1945-10-01), Sidebotham
patent: 2429500 (1947-10-01), Wolfner
patent: 2489977 (1949-11-01), Porter
patent: 2552109 (1951-05-01), Nahman
patent: 2880539 (1959-04-01), Frenkel et al.
patent: 2943966 (1960-07-01), Leno et al.
patent: 2975312 (1961-03-01), Ploran
patent: 2986254 (1961-05-01), Borke
patent: 3002263 (1961-10-01), Feinberg et al.
patent: 3010185 (1961-11-01), Hume
patent: 3022480 (1962-02-01), Tiffany
patent: 3055246 (1962-09-01), Steinberg
patent: 3107566 (1963-10-01), Archer
patent: 3110831 (1963-11-01), Zimmerle
patent: 3124026 (1964-03-01), Loeffel
patent: 3175277 (1965-03-01), Brown et al.
patent: 3181402 (1965-05-01), Kuck et al.
patent: 3213727 (1965-10-01), Schwennesen
patent: 3289507 (1966-12-01), Grewe
patent: 3338084 (1967-08-01), Stegman, Sr.
patent: 3388582 (1968-06-01), Wesstrom
patent: 3559136 (1971-01-01), Specht et al.
patent: 3628367 (1971-12-01), Wiig
patent: 3739968 (1973-06-01), Bodendoerfer
patent: 3786710 (1974-01-01), Backlin
patent: 3823460 (1974-07-01), Bergmann
patent: 3834013 (1974-09-01), Gerstle
patent: 3842493 (1974-10-01), Ohuchi et al.
patent: 3854359 (1974-12-01), Tagami
patent: 3983621 (1976-10-01), Donahoo
patent: 4046040 (1977-09-01), Bourdo
patent: 4072039 (1978-02-01), Nakanishi
patent: 4110895 (1978-09-01), Mitsui
patent: 4149309 (1979-04-01), Mitsui
patent: 4285754 (1981-08-01), DiMatteo
patent: 4287797 (1981-09-01), Seragnoli
patent: 4318320 (1982-03-01), Davis
patent: 4349997 (1982-09-01), Hayasaka et al.
patent: 4524507 (1985-06-01), Hara et al.
patent: 4536952 (1985-08-01), Shinryo et al.
patent: 4538345 (1985-09-01), Diederichs
patent: 4578853 (1986-04-01), Würth
patent: 4586236 (1986-05-01), Jones
patent: 4597168 (1986-07-01), Oboshi et al.
patent: 4619028 (1986-10-01), Neuenschwander
patent: 4624162 (1986-11-01), Arnold
patent: 4641828 (1987-02-01), Yajima
patent: 4692972 (1987-09-01), Schultes
patent: 4696212 (1987-09-01), Tokuno et al.
patent: 4748732 (1988-06-01), Schultes
patent: 4751417 (1988-06-01), Krinickas, Jr. et al.
patent: 4845832 (1989-07-01), Martin et al.
patent: 4904539 (1990-02-01), Kling et al.
patent: 4906809 (1990-03-01), Workman
patent: 4993290 (1991-02-01), Obradovic
patent: 4998430 (1991-03-01), Howe
patent: 5163217 (1992-11-01), Sakanishi
patent: 189200 (1937-05-01), None
patent: 1042441 (1958-10-01), None
patent: 1652940 (1974-09-01), None
patent: 3012319 (1981-10-01), None
patent: 3218132 (1983-11-01), None
patent: 133849 (2001-03-01), None
patent: 0 133 858 (1985-03-01), None
patent: 0 133 859 (1985-03-01), None
patent: 0 251 628 (1988-01-01), None
patent: 724588 (1955-02-01), None
patent: 1 334 094 (1973-10-01), None
patent: WO88/02286 (1988-04-01), None
patent: 855976 (1986-03-01), None
David A. Smith;Die Design Handbook; Title page and pp. 16-11, 16-14, and 16-16; Third Edition; Publication date unknown.
Werkstatt und Betrieb; Von Heinz Kuckenburg; STANZEREITECHNIK; 1961; pp. 159-161 (English translation: pp. 72 and 73 attached).
American Machinist; Emil Loeffel; Segmented Rings Save Strip; Apr. 1, 1963; pp. 96-99.
Articles arthored by George Keremedjiev in the publication “Metal Forming” in the following issues: Oct. 1988; Apr. 1989; Jun. 1989; Jul. 1989; Sep. 1989.
Undated brochure from Ceara Engineering, Limited (Northern Ireland) entitled “Syncrosine-Wavelength Correction For Register Control of Scroll-Slit Metal In Fixed Feed Length Progression Tools” (eight pages).
Undated “Outline Specification” (three pages) and layouts (four pages) from Ceara Engineering, Limited (Northern Ireland) relating to Syncrosine System.
“Syncrosine With Mechanical Servo Correction” (one doubl-sided page) and layout (one page) from Ceara Engineering, Limited (Northern Ireland).
Undated letter from Jock Workman of Ceara Engineering, Limited received by the attorneys for Applicant Fosnaugh on Oct. 18, 1993 (one page).
Undated Syncrosine cover sheets from Ceara Engineering, Limited received by the attorneys for Applicant Fosnaugh on Oct. 18, 1993 (three pages).
Choi Stephen
Franklin Electric Co., Ltd.
Marshall & Gerstein & Borun LLP
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