Process for manufacturing a captive screw

Threaded – headed fastener – or washer making: process and apparat – Process – Assembling or disassembling fastener with element

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470 2, 470 16, B21G 500

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active

06086480&

ABSTRACT:
A method of making a knob and ferrule for a captive screw is disclosed, the knob integrally attached to the screw, the ferrule attachable to a panel. The method of making the knob includes providing an aluminum alloy base metal for the knob, pressing by cold-forming the base material into a generally cylindrical cup-shaped article using at least one pressing operation, the cup having a generally cylindrical side wall, removing any base material situated outside the perimeter of the cup-shaped cylindrical article, and providing a hole in the bottom of the cup, coaxial with the hollow cylindrical walls of the cup, thereby forming the knob. The method of making the ferrule includes providing a metal base material for the ferrule, pressing the base material, by cold-forming, into a cylindrical article using at least one pressing operation, the cylindrical article having a cylindrical side wall having an outer surface, cold-forming an attachment device an end of the ferrule; and removing any base material situated outside the perimeter of the cylindrical article, thereby forming the ferrule. All major parts of the captive screw, including the knob, ferrule and screw may be cold formed.

REFERENCES:
patent: D283591 (1986-04-01), Swanstrom
patent: D357176 (1995-04-01), Ernest et al.
patent: D388316 (1997-12-01), McDonough et al.
patent: 436523 (1890-09-01), Glover
patent: 748078 (1903-12-01), Kaisling
patent: 1166345 (1915-12-01), Gates
patent: 1188420 (1916-06-01), Eadie
patent: 1664820 (1928-04-01), Hughes
patent: 2006359 (1935-07-01), Lackner
patent: 2151255 (1939-03-01), Witchger
patent: 2331322 (1943-10-01), Heinick
patent: 2470927 (1949-05-01), Hale, Jr.
patent: 2553236 (1951-05-01), Bratfisch
patent: 2609550 (1952-09-01), Phipard, Jr.
patent: 2773574 (1956-12-01), Able
patent: 2831520 (1958-04-01), Clarke
patent: 2967557 (1961-01-01), Tait et al.
patent: 2987811 (1961-06-01), Acres
patent: 3033260 (1962-05-01), Snow
patent: 3052942 (1962-09-01), Mulvaney
patent: 3056197 (1962-10-01), Lawson
patent: 3057736 (1962-10-01), Boyd
patent: 3074292 (1963-01-01), Polman
patent: 3080587 (1963-03-01), Carlson
patent: 3126935 (1964-03-01), Tuozzo
patent: 3137336 (1964-06-01), Wing
patent: 3170235 (1965-02-01), Williams
patent: 3178950 (1965-04-01), Engstrom
patent: 3180389 (1965-04-01), Frank
patent: 3195600 (1965-07-01), Middleton, Jr.
patent: 3204680 (1965-09-01), Barry
patent: 3209807 (1965-10-01), Ryner
patent: 3244212 (1966-04-01), Barry
patent: 3245450 (1966-04-01), Sauter
patent: 3250559 (1966-05-01), Sommerfeld
patent: 3263728 (1966-08-01), Lynch
patent: 3279302 (1966-10-01), Modrey
patent: 3343581 (1967-09-01), Martin et al.
patent: 3346032 (1967-10-01), Gulistan
patent: 3385341 (1968-05-01), Garstkiewicz
patent: 3437119 (1969-04-01), Dey
patent: 3465803 (1969-09-01), Earnest et al.
patent: 3502130 (1970-03-01), Gulistan
patent: 3564563 (1971-02-01), Trotter et al.
patent: 3571904 (1971-03-01), Gulistan
patent: 3912411 (1975-10-01), Moffat
patent: 3958308 (1976-05-01), Gooding
patent: 4007516 (1977-02-01), Coules
patent: 4047266 (1977-09-01), Bisbing
patent: 4078414 (1978-03-01), Orain
patent: 4367643 (1983-01-01), Hackett
patent: 4387497 (1983-06-01), Gulistan
patent: 4398322 (1983-08-01), Ewen
patent: 4399682 (1983-08-01), Hackett
patent: 4407428 (1983-10-01), Stone
patent: 4525326 (1985-06-01), Schwellinger
patent: 4594040 (1986-06-01), Molina
patent: 4599885 (1986-07-01), Stone
patent: 4602903 (1986-07-01), Wilburn
patent: 4692075 (1987-09-01), Metz
patent: 4915557 (1990-04-01), Stafford
patent: 4952107 (1990-08-01), Dupree
patent: 4964773 (1990-10-01), Schmidt
patent: 4975007 (1990-12-01), Molina
patent: 5042880 (1991-08-01), Garuti et al.
patent: 5146668 (1992-09-01), Gulistan
patent: 5209018 (1993-05-01), Heinrich
patent: 5336028 (1994-08-01), Yamamoto
patent: 5338139 (1994-08-01), Swanstrom
patent: 5382124 (1995-01-01), Frattarola
patent: 5544992 (1996-08-01), Ciobanu et al.
patent: 5642972 (1997-07-01), Ellis et al.
patent: 5910052 (1999-06-01), Ellis et al.
Huck International, Inc., "Captive Fasteners and Rivetless Nut Plates", (California, 90712) 1966.
Penn Engineering & Manufacturing Corp., Snap-Top Standoffs, Pem Bulletin SSA-988, (Danboro, PA) 1987.
Camloc Fasteners, "Captive Screws", Catalog No. 3800, pp. 1-23 (Hasbrouck Heights, NJ).
American Society For Metals, Source Book on Cold Forming, pp. 83-87 (Ohio, 44073).
Penn Engineering & Manufacturing Corp., "Type PF11 Self-Clinching Panel Fastener Assembly". Pem Bulletin PF11-297. (Danboro, PA) 1997.
Southco, Inc., Southco Latches and Access Hardware Handbook 45 NA. C-1-C44, Pennsylvania 1995.
Penn Engineering & Manufacturing Corp., Fasteners For Use In or With PC Boards; Pem Bulletin K-488, (Danboro, PA) 1980.

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