Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS2382019 A
Publication typeGrant
Publication dateAug 14, 1945
Filing dateMay 2, 1944
Priority dateMay 2, 1944
Publication numberUS 2382019 A, US 2382019A, US-A-2382019, US2382019 A, US2382019A
InventorsMiller Edwin August
Original AssigneeMiller Edwin August
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Compound screw
US 2382019 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

W! 1945. E. A. MILLER 2,332,019

COMPOUND SCREW Filed May 2, 1944 EDWiN AUGUST MILLER ATT) Patented Aug. 14, 1945 UNITED STATES PATENT OFFICE COMPOUND SCREW Edwin August Miller, Fair-field, Conn.

Application May 2, 1944, Serial No. 533,680

1 Claim.

Referring to the accompanying drawing, the

Figure 1 illustrates a compound screw with a conoidal terminal and of which the thread of the lower section is an unbroken continuance of the thread of the upper section; Figure 2 illustrates a similar compound screw, but of which the thread of the upper section terminates in a cutting shoulder; Figure 3 illustrates another similar compound screw having the thread of the upper section terminate in a cutting shoulder, but the lower section being unthreaded and having a conoidal terminal; and Figure 4 illustrates still another similar compound screw, but of three sections of which the intermediate section comprises a threaded shank of a lesser diameter than that of the uppermost section, and of a greater diameter than that of the lowest section.

With more particular reference to the accompanying drawing, the numeral I designates the head of the compound screw, which head maybe as illustrated in the various figures, Or may be of any other desired form, or entirely omitted. In

the Figure l the upper shank section 2 of substantially cylindrical form is provided with the screw thread 3. The numeral 4 designate the lower shank section of lesser diameter than that of the shank section 2 and also of substantially cylindrical form. The section 4 is peripherally provided with the screw thread 5 of the same number or convolutions to the inch with which the section 2 is provided, the thread of the section 4 being a continuation of the convolutions of thread 5 of the section 2. The periphery of the compound screw structure at place of association of the sections 2 and 4 is of such form as to eliminate angles, as at 6. The terminal I of the compound screw structure is of conoidal formation, as distinguished from the more common pointed terminal.

In driving the compound screw, illustrated by the Figure 1, into unbored wooden material, or

the like, the conoidal terminal I is first placed upon the surface of the material and then driven therein by.means of hammer blows, or the like,

until the thread 5 begins to enter the wood.

Then, by turning the compound screw by means or a screw-driver or the like, the lower threaded section 4 enters the depression made by the terminal and, further compressing the material therein, marginally forms its own threaded course so that, when the section 4 has entirely entered the material, the continued turning of the compound screw causes the threaded section 4 to gradually draw the threaded section 2 within the material to further marginally depress and to form its threaded course of increased diameter therein. The advantage of having the section 4 first enter the material is at least two-fold: The section 4 is of course easier to enter the material, it being of lesser diameter than that of the section 2, and, having fully entered, draws the section 2 therein after it, and the lateral strain upon the material which would have occurred had the section 2 first been introduced is avoided by means of the compound structure.

In the Figure 2 there are shown the head I, upper section 2, upper section thread 5, the periphery 6' and the conoidal'terminal I, the thread 3' however terminates with the cutting shoulder 8. In driving this compound screw into unbored material, the operation is similar to that of the Figure 1, excepting that the threaded section 4' having entered the material will, upon further turning of the compound screw therein. draw the cutting shoulder 8 of the thread 3' of the section 2' of the greater diameter into contact with the material to marginally out its enlarged threaded course therein, thereby further depressing the material as in the Figure 1.

In the Figure 3, as in the previous figure, there are illustrated the head I", upper section 2", upper section thread 3", the lower section 4', the periphery 8", the conoidal terminal 'I" and the cutting shoulder 8' of the thread 3", the lower section 4" of less diameter than that of the section 2" being shown as unthreaded. In driving this compound screw into unbored material, the operation is similar to that of the previous figures, excepting that suflicient hammer blows, or the like, are necessary to drive the lower .section 4" entirely into the material until the cutting shoulder 8' of the threaded section 2" of greater diameter is drawn into the material wherein it may marginally cut its enlarged threaded course therein upon the turning of the compound screw.

In the Figure 4, there is illustrated a compound screw in which the component integral sections combine the head I, the uppermost shank section 2" having the thread 3" with the intertion is similar to that of the Figure 3, with the exception that hammer blows, or the like, Will have driven the unthreaded section 9 into the material before the threaded intermediate section 4" can be turned into the material to be followed by the threaded section 2 which finally is turned thereinv This last described form of compound screw is well adapted for easy driving into material where a longer compound screw of greater section diameters may be used to advantage.

While the threaded sections, are above described as having, in each instance, similar convolutions of uniform number to the inch, it is to be understood that such number may be varied with reference to sections of the same compound screw. Also,

of thread, they may just as well be provided while the threaded I sections are shown as having single convolutions with multiple convolutions, if desired. .It is further understood that the invention herein disclosed is not to be confined to the illustrations shown, they being merely illustrative of difier- .ent embodiments of the invention, and other combinations of compound screw sections, within the spirit of the invention, are intended to be included herein.

I claim: l

A compound screw adapted to be driven into nonbored'wooden material, or the like, the screw comprising a headed cylindrical shank section threaded from adjacent said head throughout its length; one or more other cylindrical shank sections, each of less diameter than that of the headed and preceding section, certain of said other sections being threaded throughout and the convolutions of all threaded sections being of the same number to the inch; nonthreaded tapered sections integrally connecting the cylindrical sections; a substantially abrupt cutting shoulder with which each terminal of the threaded sections is provided; and a conoidal terminal provided by the screw.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2532296 *Nov 9, 1948Dec 5, 1950Giesen Joseph HBone screw and method of fastening
US2601385 *Apr 1, 1946Jun 24, 1952Pittsburgh Screw And Bolt CorpScrew stud
US3051169 *Dec 5, 1958Aug 28, 1962Stille Werner AbSurgical screw connector
US3208328 *Apr 11, 1962Sep 28, 1965John L MyersScrews
US3438299 *Jan 26, 1968Apr 15, 1969Illinois Tool WorksExtruding screw
US3661046 *Nov 9, 1970May 9, 1972Illinois Tool WorksCombination screw
US3682507 *Jun 2, 1970Aug 8, 1972Illinois Tool WorksThreaded fastener with stabilizing threads
US3717067 *Jan 7, 1971Feb 20, 1973Us AgricultureUnderlayment fastening device
US3731725 *Jul 6, 1971May 8, 1973A BrophySelf stopping and locking screw
US4027573 *Jun 20, 1975Jun 7, 1977Interior Fasteners, Inc.Self-tapping screw fastener with improved thread construction
US4312336 *Nov 13, 1979Jan 26, 1982Orthofix S.R.1.External axial fixation unit
US4393676 *Sep 23, 1980Jul 19, 1983Luciano ProsdocimoProcess for producing connecting member shanks, such as hinges for window and door frames, formed of cylindrical sections of different diameter, with continuous even screw thread, that is with constant pitch
US4463753 *Sep 11, 1981Aug 7, 1984Gustilo Ramon BCompression bone screw
US4952110 *Oct 13, 1989Aug 28, 1990Ring Screw Works, Inc.Anti-cross thread screw
US5019079 *Nov 20, 1989May 28, 1991Zimmer, Inc.Bone screw
US5180382 *Dec 17, 1991Jan 19, 1993Synthes (U.S.A.)Bone screw
US5234430 *Dec 18, 1991Aug 10, 1993Huebner Randall JOrthopedic fixation screw and method
US5397356 *Jan 15, 1993Mar 14, 1995Depuy Inc.Pin for securing a replacement ligament to a bone
US5433569 *Sep 2, 1993Jul 18, 1995Fall; James C.Screw
US5524736 *Mar 3, 1995Jun 11, 1996Korshak; Maurice J.Master cylinder bleeding
US5562671 *Sep 26, 1994Oct 8, 1996Depuy Inc.Ligament replacement cross pinning method
US5674224 *Nov 18, 1994Oct 7, 1997Howell; Stephen M.Bone mulch screw assembly for endosteal fixation of soft tissue grafts and method for using same
US5800107 *Apr 19, 1996Sep 1, 1998Giannuzzi; Louis N.Self-tapping, screw-type masonry anchor
US5882162 *Nov 28, 1997Mar 16, 1999Max Co., Ltd.Driving screw
US5905230 *Aug 15, 1995May 18, 1999Thomas & Betts CorporationSelf tapping screw for use with an electrical connector
US5919193 *Mar 14, 1996Jul 6, 1999Slavitt; Jerome A.Method and kit for surgically correcting malformations in digits of a finger or toe
US5964768 *Mar 3, 1998Oct 12, 1999Acumed, Inc.Tapered bone screw with continuously varying pitch
US5971985 *Sep 12, 1997Oct 26, 1999Ace Surgical Supply Co., Inc.Bone attachment device for use with tissue grafts and membranes
US6030162 *Dec 18, 1998Feb 29, 2000Acumed, Inc.Axial tension screw
US6077013 *Apr 25, 1997Jun 20, 2000Topura Co., Ltd.Bolt equipped with pilot
US6299615Aug 16, 1999Oct 9, 2001Acumed, Inc.System for fusing joints
US6306138 *Sep 24, 1998Oct 23, 2001Ethicon, Inc.ACL fixation pin and method
US6306140Jan 17, 2001Oct 23, 2001Synthes (Usa)Bone screw
US6398786 *Oct 6, 1998Jun 4, 2002Nenad SesicStrain-inducing conical screw for stimulating bone transplant growth
US6468277Apr 4, 2000Oct 22, 2002Ethicon, Inc.Orthopedic screw and method
US6527777Mar 13, 2001Mar 4, 2003Ethicon, Inc.Device for repairing a soft-tissue tear and method
US6585740May 25, 2001Jul 1, 2003Synthes (U.S.A.)Bone screw
US6780188Oct 22, 2001Aug 24, 2004Ethicon, Inc.ACL fixation pin
US6875215Feb 15, 2002Apr 5, 2005John Stanley TarasDistraction pin for fracture fixation
US6953463 *Oct 12, 2001Oct 11, 2005Hs West Investments, LlcInterference screws having increased proximal diameter
US6984235Jun 3, 2002Jan 10, 2006Acumed LlcSystem for fusing joints
US6989014Jul 25, 2002Jan 24, 2006Ethicon, Inc.Orthopedic screw and method
US7235079Nov 18, 2004Jun 26, 2007Acumed LlcComposite bone fasteners
US7255523Dec 22, 2005Aug 14, 2007Prime Source Building Products, Inc.Dual threaded screw for composite materials
US7334975May 5, 2003Feb 26, 2008Maclean-Fogg CompanyFastener assembly
US7410337Jun 1, 2006Aug 12, 2008The Maclean-Fogg CompanyFastener assembly
US7438512Nov 21, 2003Oct 21, 2008Maclean-Fogg CompanyU-bolt assembly
US7578836Jan 24, 2006Aug 25, 2009Depuy MitekOrthopedic screw and method
US7665839Nov 25, 2008Feb 23, 2010Nancy TedeschiCoupling device with breakaway and methods of using the same
US7708766Aug 11, 2003May 4, 2010Depuy Spine, Inc.Distraction screw
US7954941Aug 21, 2008Jun 7, 2011Nancy TedeschiCoupling device with breakaway and methods of using the same
US8011866Apr 19, 2007Sep 6, 2011Maclean-Fogg CompanyLocking fastener assembly
US8070403Aug 6, 2008Dec 6, 2011Eyeego LlcScrew with breakaway and methods of using the same
US8070786Jan 9, 2006Dec 6, 2011Acumed LlcSystem for fusing joints
US8083453 *Nov 8, 2007Dec 27, 2011Katsuyuki TotsuScrew
US8083769Nov 1, 2006Dec 27, 2011Depuy Mitek, Inc.Wired sutures
US8114128Nov 1, 2006Feb 14, 2012Depuy Mitek, Inc.Cannulated suture anchor
US8162998Oct 25, 2005Apr 24, 2012Synthes Usa, LlcBone screw
US8167906Nov 1, 2006May 1, 2012Depuy Mitek, Inc.Suture anchor with pulley
US8348572 *Jul 23, 2007Jan 8, 2013Ejot Gmbh & Co. KgHole-forming and thread-forming screw
US8375546Feb 5, 2011Feb 19, 2013Eyeego, LlcScrew with breakaway and methods of using the same
US8394123Nov 18, 2011Mar 12, 2013Depuy Mitek, Inc.Wired sutures
US8419332Oct 20, 2008Apr 16, 2013Atlas Bolt & Screw Company LlcNon-dimpling fastener
US8556556Jan 7, 2011Oct 15, 2013Fbb Asset Management Limited PartnershipScrew with breakaway and methods of using the same
US8597328Mar 29, 2010Dec 3, 2013Depuy Mitek, LlcCannulated suture anchor
US8662809May 6, 2008Mar 4, 2014SWG Schraubenwek Gaisbach GmbHParticle board screw
US8702754Sep 14, 2007Apr 22, 2014Depuy Mitek, LlcMethods for anchoring suture to bone
US8882801 *Sep 14, 2007Nov 11, 2014Depuy Mitek, LlcDual thread cannulated suture anchor
US8945193Mar 6, 2012Feb 3, 2015X-Spine Systems, Inc.Minimally invasive spinal facet compression screw and system for bone joint fusion and fixation
US8992587Jul 18, 2011Mar 31, 2015X-Spine Systems, Inc.Spinal facet compression screw with variable pitch thread zones and buttress head
US8997327Feb 18, 2011Apr 7, 2015Fbb Asset Management Limited PartnershipScrew with breakaway and methods of using the same
US9011440 *Mar 20, 2012Apr 21, 2015DePuy Synthes Products, Inc.Bone screw
US9055986Nov 12, 2014Jun 16, 2015Amendia, Inc.Orthopedic fastener
US9161793Mar 27, 2013Oct 20, 2015Acumed LlcAxial tension screw
US9179955Nov 24, 2014Nov 10, 2015Amendia, Inc.Orthopedic fastener
US9249822 *May 6, 2014Feb 2, 2016Shu Chin HuangScrews
US9265540Jan 12, 2015Feb 23, 2016X-Spine Systems, Inc.Minimally invasive spinal facet compression screw and system for bone joint fusion and fixation
US9271715Mar 19, 2012Mar 1, 2016Depuy Mitek, LlcSuture anchor with pulley
US9402620Mar 4, 2013Aug 2, 2016Howmedica Osteonics Corp.Knotless filamentary fixation devices, assemblies and systems and methods of assembly and use
US9463013Mar 13, 2013Oct 11, 2016Stryker CorporationAdjustable continuous filament structure and method of manufacture and use
US9493972Jan 4, 2013Nov 15, 2016Fbb Asset Management Limited PartnershipScrew with breakaway and methods of using the same
US20030014054 *Jun 3, 2002Jan 16, 2003Huebner Randall J.System for fusing joints
US20030074002 *Oct 12, 2001Apr 17, 2003West Hugh S.Interference screws having increased proximal diameter
US20050038438 *Aug 11, 2003Feb 17, 2005Depuy Acromed, Inc.Distraction screw
US20050165402 *Mar 21, 2005Jul 28, 2005Taras John S.Cannulated distraction pin for fracture fixation
US20060095040 *Oct 25, 2005May 4, 2006Andre SchliengerBone screw
US20060122612 *Jan 24, 2006Jun 8, 2006Justin Daniel FOrthopedic screw and method
US20070147973 *Dec 22, 2005Jun 28, 2007Cyril LaanDual threaded screw for composite materials
US20080147063 *Nov 1, 2006Jun 19, 2008Depuy Mitek, Inc.Cannulated suture anchor
US20080147064 *Nov 1, 2006Jun 19, 2008Depuy Mitek, Inc.Suture anchor with pulley
US20080147119 *Nov 1, 2006Jun 19, 2008Depuy Mitek, Inc.Wired sutures
US20090041559 *Aug 6, 2008Feb 12, 2009Nancy TedeschiScrew with breakaway and methods of using the same
US20090051865 *Aug 21, 2008Feb 26, 2009Nancy TedeschiCoupling device with breakaway and methods of using the same
US20090076544 *Sep 14, 2007Mar 19, 2009Depuy Mitek, Inc.Dual thread cannulated suture anchor
US20090076545 *Sep 14, 2007Mar 19, 2009Depuy Mitek, Inc.Methods for anchoring suture to bone
US20090104001 *Oct 20, 2008Apr 23, 2009Kochheiser Michael ANon-dimpling fastener
US20090136319 *Nov 27, 2007May 28, 2009Illinois Tool Works Inc.Threaded screw fastener
US20090198291 *Apr 15, 2009Aug 6, 2009Warsaw Orthopedic, Inc.Bone screw
US20090311074 *Jul 23, 2007Dec 17, 2009Heinrich FriederichHole-forming and thread-forming screw
US20100040432 *Nov 8, 2007Feb 18, 2010Katsuyuki TotsuScrew
US20100045926 *Nov 25, 2008Feb 25, 2010Nancy TedeschiCoupling device with breakaway and methods of using the same
US20100129175 *May 6, 2008May 27, 2010Andreas WunderlichParticle board screw
US20100185238 *Mar 29, 2010Jul 22, 2010Depuy Mitek, Inc.Cannulated suture anchor
US20110103915 *Jan 7, 2011May 5, 2011Eyeego, LlcScrew With Breakaway and Methods of Using The Same
US20110138592 *Feb 18, 2011Jun 16, 2011Eyeego, LlcScrew With Breakaway And Methods Of Using The Same
US20120107070 *Jun 28, 2010May 3, 2012Ruia Global Fasteners AgSelf-drilling fastening element
US20120203226 *Mar 20, 2012Aug 9, 2012Schlienger AndreBone Screw
USRE31809 *Apr 6, 1983Jan 22, 1985Orthofix S.R.L.External axial fixation unit
USRE42207 *Aug 18, 2005Mar 8, 2011Asia Fastening (Us), Inc.Masonry anchor device
EP0972953A2 *Jul 2, 1999Jan 19, 2000Aoyama Seisakusho Co., Ltd.Bolt
EP0972953A3 *Jul 2, 1999Aug 9, 2000Aoyama Seisakusho Co., Ltd.Bolt
EP1024763A1 *Sep 24, 1998Aug 9, 2000Depuy Orthopaedics, Inc.Acl fixation pin and method
EP1024763A4 *Sep 24, 1998Jun 26, 2002Depuy Orthopaedics IncAcl fixation pin and method
EP2261518A3 *May 19, 2010Jun 18, 2014EJOT Baubefestigungen GmbHHole and thread-forming screw
WO1994015552A1 *Jan 13, 1994Jul 21, 1994Depuy Inc.Pin for securing a replacement ligament to a bone
WO2000032125A1Nov 26, 1998Jun 8, 2000Synthes Ag ChurScrew
WO2008138510A1 *May 6, 2008Nov 20, 2008Adlof Würth Gmbh & Co. KgParticle board screw
WO2009021073A3 *Aug 6, 2008Jun 4, 2009Nancy TedeschiScrew with breakaway and methods of using the same
U.S. Classification411/378, 411/412, 606/312, 606/315, 411/386
International ClassificationF16B35/04, F16B25/00
Cooperative ClassificationF16B25/0015, F16B25/00, F16B25/0057, F16B25/0073, F16B25/0078, F16B35/047
European ClassificationF16B25/00G2, F16B25/00G1C, F16B25/00G1E, F16B25/00C1, F16B35/04B2H, F16B25/00