Captive shoulder nut assembly

Details Captive shoulder nut assembly Captive shoulder nut assembly

2006-05-23

2008-03-11

Datskovskiy, Michael (Department: 2835)

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

C361S704000, C361S709000, C361S710000, C165S080300, C165S185000, C257S718000, C257S719000, C024S453000, C024S510000

Reexamination Certificate

active

07342796

ABSTRACT:
A captive shoulder nut assembly, to hold a heat sink onto a PC board, has a nut member with a threaded portion and a tubular portion extending therefrom. The nut member mates with an upstanding threaded stud. A biasing compression spring rides over the nut with an end coil loop secured to the nut. The nut's tubular portion is suitable for insertion through a straight hole in the heat sink, with the spring remaining above the hole and operating against the heat sink. The free end of the tubular portion can be flared to a larger diameter than the hole, thereby captivating it to the heat sink and permitting movement by the nut through the hole while acting against the spring force. A stop shoulder on the nut and a projecting shoulder on the stud define the length travel of the nut onto the stud and establishes a pre-load compression force on the spring. A self-centering structure included for the nut to engage the stud.

REFERENCES:
patent: 1472405 (1923-10-01), Amberton
patent: 1570148 (1926-01-01), Herr
patent: 1630958 (1927-05-01), Mauch
patent: 1854730 (1932-04-01), Bell
patent: 1997821 (1935-04-01), Gzupkaytie
patent: 2018346 (1935-10-01), Busby
patent: 2101938 (1937-12-01), Giberson
patent: 2151255 (1939-03-01), Witchger
patent: 2201793 (1940-05-01), Sanborn
patent: 2235530 (1941-03-01), Mercer
patent: 2345650 (1944-04-01), Attwood
patent: 2430884 (1947-11-01), Howard
patent: 2464133 (1949-03-01), Herbert
patent: 2672659 (1954-03-01), Becker
patent: 2737222 (1956-03-01), Becker
patent: 2991904 (1961-07-01), Blaise
patent: 3093222 (1963-06-01), Christofferson et al.
patent: 3204680 (1965-09-01), Barry
patent: 3209806 (1965-10-01), Currier et al.
patent: 3250559 (1966-05-01), Sommerfeld
patent: 3263728 (1966-08-01), Lynch
patent: 3295578 (1967-01-01), Maloof
patent: 3437119 (1969-04-01), Dey
patent: 3451668 (1969-06-01), Robinson
patent: 3461769 (1969-08-01), Brosseit
patent: 3465803 (1969-09-01), Ernest et al.
patent: 3490509 (1970-01-01), Otteson et al.
patent: 3502130 (1970-03-01), Gulistan
patent: 3589423 (1971-06-01), Metz
patent: 3594876 (1971-07-01), Gunther
patent: 3723946 (1973-03-01), Weatherup et al.
patent: 3728933 (1973-04-01), Grube
patent: 3816010 (1974-06-01), DiRago
patent: 3843080 (1974-10-01), Imai et al.
patent: 3847422 (1974-11-01), Gulistan
patent: 3877339 (1975-04-01), Muenchinger
patent: 3892031 (1975-07-01), Bisbing
patent: 3912411 (1975-10-01), Moffat
patent: 4088355 (1978-05-01), Dey
patent: 4204566 (1980-05-01), Kirrish et al.
patent: 4464091 (1984-08-01), Molina
patent: 4493470 (1985-01-01), Engel
patent: 4557653 (1985-12-01), Hill
patent: D283591 (1986-04-01), Swanstrom
patent: 4720223 (1988-01-01), Neights et al.
patent: 4810143 (1989-03-01), Muller
patent: 4828441 (1989-05-01), Frasca
patent: 4863326 (1989-09-01), Vickers
patent: 4911592 (1990-03-01), Muller
patent: 4915557 (1990-04-01), Stafford
patent: 5042880 (1991-08-01), Garuti et al.
patent: 5059075 (1991-10-01), Kelly
patent: 5094579 (1992-03-01), Johnson
patent: 5175665 (1992-12-01), Pegg
patent: 5338139 (1994-08-01), Swanstrom
patent: 5382124 (1995-01-01), Frattarola
patent: 5384940 (1995-01-01), Soule et al.
patent: 5393183 (1995-02-01), Hinton
patent: D357176 (1995-04-01), Ernest et al.
patent: 5462395 (1995-10-01), Damm et al.
patent: 5475564 (1995-12-01), Chiou
patent: 5538464 (1996-07-01), MacKay, Jr.
patent: 5544992 (1996-08-01), Ciobanu et al.
patent: 5558480 (1996-09-01), Kazino et al.
patent: 5611654 (1997-03-01), Frattarola et al.
patent: 5638258 (1997-06-01), Lin
patent: 5653481 (1997-08-01), Aulderman
patent: 5662163 (1997-09-01), Mira
patent: D391844 (1998-03-01), Ropponen et al.
patent: D392179 (1998-03-01), Ropponen et al.
patent: 5730210 (1998-03-01), Kou
patent: 5738531 (1998-04-01), Beaman et al.
patent: 5743692 (1998-04-01), Schwarz
patent: 5755276 (1998-05-01), Chiou
patent: 5779288 (1998-07-01), Amelio
patent: 5828553 (1998-10-01), Chiou
patent: 5845673 (1998-12-01), Paul
patent: 5881800 (1999-03-01), Chung
patent: 5903434 (1999-05-01), Chiou
patent: 5941669 (1999-08-01), Aukzemas
patent: 5999402 (1999-12-01), Jeffries et al.
patent: 6025994 (2000-02-01), Chiou
patent: 6055159 (2000-04-01), Sun
patent: 6059503 (2000-05-01), Johnson
patent: 6079920 (2000-06-01), Dispenza
patent: 6101096 (2000-08-01), MacGregor et al.
patent: 6105215 (2000-08-01), Lee
patent: 6112378 (2000-09-01), Lee
patent: 6139113 (2000-10-01), Seliga
patent: 6139237 (2000-10-01), Nagayama
patent: 6164980 (2000-12-01), Goodwin
patent: 6179697 (2001-01-01), Shibai
patent: 6182958 (2001-02-01), Sidone et al.
patent: 6238155 (2001-05-01), Aukzemas et al.
patent: 6246584 (2001-06-01), Lee et al.
patent: 6250375 (2001-06-01), Lee et al.
patent: 6280131 (2001-08-01), Ellis et al.
patent: 6282761 (2001-09-01), Bewley et al.
patent: 6295203 (2001-09-01), Lo
patent: 6307748 (2001-10-01), Lin et al.
patent: 6309156 (2001-10-01), Schneider
patent: 6311765 (2001-11-01), Lo et al.
patent: 6318452 (2001-11-01), Lee
patent: 6374906 (2002-04-01), Peterson et al.
patent: 6379234 (2002-04-01), MacKay
patent: 6439816 (2002-08-01), Nance et al.
patent: 6480387 (2002-11-01), Lee et al.
patent: D472797 (2003-04-01), Ellis et al.
patent: 6644903 (2003-11-01), Arand
patent: D484031 (2003-12-01), Ellis et al.
patent: 6679666 (2004-01-01), Mizuno et al.
patent: D494458 (2004-08-01), Aukzemas et al.
patent: 6769850 (2004-08-01), Lay
patent: 6786691 (2004-09-01), Alden, III
patent: 6826054 (2004-11-01), Liu
patent: 6866456 (2005-03-01), Bentrim
patent: 2001/0024607 (2001-09-01), Frattarola
patent: 2003/0007844 (2003-01-01), Terry
patent: 2004/0081529 (2004-04-01), Stanton et al.
patent: 2004/0165966 (2004-08-01), Aukzemas et al.
patent: WO 02/48557 (2002-06-01), None
Southco Latches and Access Hardware, North American Addition n-47 NA, pp. C-28 and C-32 (3 pages).
Fairchild Fasteners, Captive Screws, Tridair Products (14 pages).
ITW Fastex, web page www.itw-fastex.com
ewprods.htm, Aug. 21, 2001 (2 pages).
ITW Fastex, web page www.itw-fastex.com/cgi-bin/itwfastex/052, Oct. 17, 2002 (1 page).
Photograph of IBM Heat Sink for IBM Xseries 345 Server, p. 1, 2003 (1 page).
Photograph of Heat Sink Captive Screw by Shuttle, p. 1 and 2, 2003 (2 pages).
Photographs of Swiftech MCX 603 Heat Sink, p. 1 and p. 2, 2002 (2 pages).
Photographs of MSI Hermes 845 GV Heat Sink with Heat Sink Captive Screw installed, p. 1 and 2, and with O-ring, 2002 (3 pages).
Hardcore Cooling, web page www.hardcorecooling.us/product.asp?3=413, pp. 1-6 (6 pages).
Fairchild Fasteners, South Bay & Kelkheim Operations, Captive Screws (5 pages).
Captive Fastener Corporation, Self-Clinching Slide-Top Standoffs, Series CFSKC, p. 56 (1 page).
Captive Fastener Corporation, Spring-Top Standoffs, Series CFSSA, CFSSS & CFSSC, p. 59 (1 page).
ITW Fastex, Auto Heatsink Clip, part No. 8033-00-9909, Aug. 15, 2000 (1 page).
Penn Engineering, “The Self-Clinshing Fastener Handbook”, 2002, p. 15.
Air Force Qualification Training Package (AFQTP 3E1x1-12) for HAVAC/R Module 12 piping/tubing, Dec. 2002, pp. 10-12.
www.grainger.com/industrial-supplies/Benders1A217.html.
www.dictionary.com, Definition of “swaging” according to the American Heritage Dictionary of the English language, 4th ed.
www.dictionary.com, Definition of “flaring” according to the American Heritage Dictionary of the English language, 4th ed.
www.websters-dictionary-online.net/fl/flaring.html, Definition of “flaring” according to WorldNet 1.7.1. Copyright 2001, Princeton University.
www.ridgidforum.com/cgi-bin/ultimatebb.cgi?ubb=get—topic;f=14;t=000062.

Affiliated with

Also associated with

Rating

Captive shoulder nut assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Captive shoulder nut assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Captive shoulder nut assembly will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3977698