WO2004027270A2 - Split lock screw fastener assembly and method - Google Patents
Split lock screw fastener assembly and method Download PDFInfo
- Publication number
- WO2004027270A2 WO2004027270A2 PCT/US2003/027663 US0327663W WO2004027270A2 WO 2004027270 A2 WO2004027270 A2 WO 2004027270A2 US 0327663 W US0327663 W US 0327663W WO 2004027270 A2 WO2004027270 A2 WO 2004027270A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bore
- section
- end section
- bolt
- tapered end
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 12
- 230000008901 benefit Effects 0.000 claims description 10
- 238000005382 thermal cycling Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 230000008642 heat stress Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/12—Separate metal or non-separate or non-metal dowel sleeves fastened by inserting the screw, nail or the like
- F16B13/126—Separate metal or non-separate or non-metal dowel sleeves fastened by inserting the screw, nail or the like fastened by inserting an unthreaded element, e.g. pin or nail
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/02—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws divided longitudinally
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/041—Specially-shaped shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/06—Specially-shaped heads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/023—Locking of screws, bolts or nuts in which the locking takes place after screwing down by driving a conic or wedge-shaped expander through the threaded element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/028—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of an auxiliary bolt or threaded element whose action provokes the deformation of the main bolt or nut and thereby its blocking
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
- Y10S411/924—Coupled nut and bolt
- Y10S411/954—Wedged slotted bolt
Definitions
- the present invention relates generally to a screw locking assembly including a hollow split stud or split bolt and a screw set-pin that is tightened into the hollow split bolt to lock it tightly into a hole or threaded hole in a medial body. More particularly, the present invention relates to improvements that greatly increase the mechanical advantage between torque applied to the pin setscrew and expansion of a split distal end portion of the bolt and to preventing loosening of the pin setscrew with respect to the split bolt and to preventing loosening of the split bolt with respect to the bolt-receiving hole without galling and causing injury to the threads of either the bolt bore or the pin setscrew as in the prior art.
- the screw set pin (3) is also tightened sufficiently into the bolt (2) to cause the tapered end section (10A) of the pin shaft (10) to sufficiently symmetrically expand bolt fingers defined by the slits that central contact areas (C) of the fingers elastically deform and dig into the bolt-receiving hole (15 A) enough to securely lock the bolt (2) to the body (15).
- Fig. 6 shows screw set pin 3 sufficiently tightened into split bolt 2 to expand the split distal end portion of the split bolt.
- the outward radial component of force applied by tapered section 10A at the contact area 26 (Fig. 5) to tapered section 6C of bolt bore 6 causes the fingers of section 20 to expand outward as shown.
- arcs 34, 36, 38 and 40 are provided to show that the further screw set pin 3 is advanced into section 6C of bore 6, the greater the differential is between the two radii that determine the amount of contact area 26, and therefore the greater the reduction is in the amount of contact area 26, and therefore the greater the pressure is that increases the extent to which screw set pin 3 is locked into place.
- Fig. 7 shows expansion of the distal portion 20 of split bolt 2 as in Fig.
- 20D-1 is indicated by reference numeral 26 in Fig. 8 A.
- Fig. 8B another section view is shown after screw set pin 3 has been tightened so that its tapered distal end section 10A has expanded fingers 20D- 1 ,2,3,4 so that the outer threads thereof are forced tightly into the inner threads of bolt-receiving hole 15 A.
- the radius of curvature of the threads of bolt-receiving hole 15A in body 15 is necessarily greater than the radii of curvature of the outer threads of the outwardly expanded finger 20D-1. Consequently, the contact area C between the inner threads of bolt-receiving hole 15A and the outer threads of finger 20D-1 is confined to the central area of the outer threads of finger 20D-1. This causes the contact area of the outer threads of finger 20D-1 to tend to dig into and elastically deform the threads 15B of body 15 in the contact area C. This causes the distal portion 20 of split bolt 2 to be very securely locked with respect to body 15.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
- Insertion Pins And Rivets (AREA)
- Gripping On Spindles (AREA)
- Clamps And Clips (AREA)
- Dowels (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR0314846-7A BR0314846A (en) | 2002-09-21 | 2003-09-02 | Split Lock Screw Fastener Assembly and Method |
CA002499555A CA2499555A1 (en) | 2002-09-21 | 2003-09-02 | Split lock screw fastener assembly and method |
EP03797878A EP1540194A4 (en) | 2002-09-21 | 2003-09-02 | Split lock screw fastener assembly and method |
JP2004537718A JP2006507451A (en) | 2002-09-21 | 2003-09-02 | Split-lock screw fastener assembly and method |
AU2003265917A AU2003265917A1 (en) | 2002-09-21 | 2003-09-02 | Split lock screw fastener assembly and method |
MXPA05003034A MXPA05003034A (en) | 2002-09-21 | 2003-09-02 | Split lock screw fastener assembly and method. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US41235802P | 2002-09-21 | 2002-09-21 | |
US60/412,358 | 2002-09-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2004027270A2 true WO2004027270A2 (en) | 2004-04-01 |
WO2004027270A3 WO2004027270A3 (en) | 2005-04-07 |
Family
ID=32030854
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2003/027663 WO2004027270A2 (en) | 2002-09-21 | 2003-09-02 | Split lock screw fastener assembly and method |
Country Status (11)
Country | Link |
---|---|
US (2) | US6908271B2 (en) |
EP (1) | EP1540194A4 (en) |
JP (1) | JP2006507451A (en) |
KR (1) | KR20050057513A (en) |
CN (1) | CN1695012A (en) |
AU (1) | AU2003265917A1 (en) |
BR (1) | BR0314846A (en) |
CA (1) | CA2499555A1 (en) |
MX (1) | MXPA05003034A (en) |
WO (1) | WO2004027270A2 (en) |
ZA (1) | ZA200502409B (en) |
Cited By (2)
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---|---|---|---|---|
WO2008053186A1 (en) * | 2006-11-01 | 2008-05-08 | Titus + Ltd | Improvements in fasteners |
US11624397B2 (en) | 2020-06-17 | 2023-04-11 | Daniel Stempfley | Fastening nut device |
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US6487882B2 (en) * | 1998-02-09 | 2002-12-03 | Knox Company | Locking cap system |
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CA2686678C (en) * | 2002-01-17 | 2013-05-28 | Iggesund Tools Ab | Method for the simultaneous sharpening of opposed cutting edges |
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US8382415B1 (en) | 2006-09-05 | 2013-02-26 | Harold Goldbaum | Rapid-engaging and positive-locking threaded configuration |
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US8991434B2 (en) | 2006-09-14 | 2015-03-31 | The Knox Company | Locking cap system |
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US8303589B2 (en) | 2008-06-24 | 2012-11-06 | Extremity Medical Llc | Fixation system, an intramedullary fixation assembly and method of use |
US8313487B2 (en) | 2008-06-24 | 2012-11-20 | Extremity Medical Llc | Fixation system, an intramedullary fixation assembly and method of use |
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US8328806B2 (en) | 2008-06-24 | 2012-12-11 | Extremity Medical, Llc | Fixation system, an intramedullary fixation assembly and method of use |
US9289220B2 (en) * | 2008-06-24 | 2016-03-22 | Extremity Medical Llc | Intramedullary fixation assembly and method of use |
US8343199B2 (en) | 2008-06-24 | 2013-01-01 | Extremity Medical, Llc | Intramedullary fixation screw, a fixation system, and method of fixation of the subtalar joint |
US9017329B2 (en) * | 2008-06-24 | 2015-04-28 | Extremity Medical, Llc | Intramedullary fixation assembly and method of use |
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US20110250035A1 (en) * | 2009-10-07 | 2011-10-13 | Moisture Management, Llc | Fastener assembly configured for attaching board in exterior wall |
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US8430616B2 (en) * | 2010-12-02 | 2013-04-30 | Harris Corporation | Press-set threaded screws and 2 stroke air tool for installation |
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US2463859A (en) | 1945-07-25 | 1949-03-08 | Boots Aircraft Nut Corp | Threaded locking device |
US2479075A (en) | 1944-11-24 | 1949-08-16 | Margaret J Martin | Screw locking means |
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-
2003
- 2003-09-02 CN CNA038247488A patent/CN1695012A/en active Pending
- 2003-09-02 BR BR0314846-7A patent/BR0314846A/en not_active Application Discontinuation
- 2003-09-02 CA CA002499555A patent/CA2499555A1/en not_active Abandoned
- 2003-09-02 JP JP2004537718A patent/JP2006507451A/en active Pending
- 2003-09-02 KR KR1020057004829A patent/KR20050057513A/en not_active Application Discontinuation
- 2003-09-02 WO PCT/US2003/027663 patent/WO2004027270A2/en not_active Application Discontinuation
- 2003-09-02 MX MXPA05003034A patent/MXPA05003034A/en unknown
- 2003-09-02 EP EP03797878A patent/EP1540194A4/en not_active Withdrawn
- 2003-09-02 AU AU2003265917A patent/AU2003265917A1/en not_active Abandoned
- 2003-09-02 US US10/653,324 patent/US6908271B2/en not_active Expired - Fee Related
-
2005
- 2005-03-23 ZA ZA200502409A patent/ZA200502409B/en unknown
- 2005-04-21 US US11/111,062 patent/US7165924B1/en not_active Expired - Fee Related
Patent Citations (3)
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---|---|---|---|---|
US322657A (en) | 1885-07-21 | Screw-bolt lock | ||
US2479075A (en) | 1944-11-24 | 1949-08-16 | Margaret J Martin | Screw locking means |
US2463859A (en) | 1945-07-25 | 1949-03-08 | Boots Aircraft Nut Corp | Threaded locking device |
Non-Patent Citations (1)
Title |
---|
See also references of EP1540194A4 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008053186A1 (en) * | 2006-11-01 | 2008-05-08 | Titus + Ltd | Improvements in fasteners |
US8714863B2 (en) | 2006-11-01 | 2014-05-06 | Titus + Ltd. | Fasteners |
US11624397B2 (en) | 2020-06-17 | 2023-04-11 | Daniel Stempfley | Fastening nut device |
Also Published As
Publication number | Publication date |
---|---|
WO2004027270A3 (en) | 2005-04-07 |
AU2003265917A1 (en) | 2004-04-08 |
EP1540194A4 (en) | 2006-02-08 |
US6908271B2 (en) | 2005-06-21 |
MXPA05003034A (en) | 2005-09-08 |
CN1695012A (en) | 2005-11-09 |
US20040057810A1 (en) | 2004-03-25 |
ZA200502409B (en) | 2005-10-05 |
BR0314846A (en) | 2005-08-02 |
CA2499555A1 (en) | 2004-04-01 |
EP1540194A2 (en) | 2005-06-15 |
KR20050057513A (en) | 2005-06-16 |
JP2006507451A (en) | 2006-03-02 |
US7165924B1 (en) | 2007-01-23 |
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