WO2004057200A1 - Screw-screw nut pair for the space frame assembly - Google Patents

Screw-screw nut pair for the space frame assembly Download PDF

Info

Publication number
WO2004057200A1
WO2004057200A1 PCT/GR2002/000068 GR0200068W WO2004057200A1 WO 2004057200 A1 WO2004057200 A1 WO 2004057200A1 GR 0200068 W GR0200068 W GR 0200068W WO 2004057200 A1 WO2004057200 A1 WO 2004057200A1
Authority
WO
WIPO (PCT)
Prior art keywords
screw
screw nut
polygonical
frame assembly
space frame
Prior art date
Application number
PCT/GR2002/000068
Other languages
French (fr)
Inventor
George Petsetakis
Original Assignee
George Petsetakis
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by George Petsetakis filed Critical George Petsetakis
Priority to PCT/GR2002/000068 priority Critical patent/WO2004057200A1/en
Priority to AU2002350981A priority patent/AU2002350981A1/en
Publication of WO2004057200A1 publication Critical patent/WO2004057200A1/en

Links

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
    • F16B33/00—Features common to bolt and nut
    • F16B33/002—Means for preventing rotation of screw-threaded elements
    • 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
    • F16B35/048—Specially-shaped necks

Definitions

  • the invention is reported on the pair of the screw-screw nut that is being used for the space-frame bolting.
  • the screw and the screw nut are traverse perforated and inside of the hole a pin is placed so that turning the screw nut the screw is turned, in order to accomplish the bolting, since is not feasible the bolt of the screw with the rotation of his head.
  • the hole, which is made on the screw has as a result the reduction of his cross-section and his strength.
  • the inside surface of the hole is not able, to be galvanized so the oxidation is more often.
  • the power which is transferred from the screw nut to the screw, through the pin, has as a result the breaking of the pin in many cases. For that reason the bolting is not proper since the requested powers are not applied on the screw nut because of the fear of breaking the pin.
  • Main characteristic of the screw-screw nut pair, according to the present method, is that the body of the screw (3) is not round but it has polygonical form (1) .
  • Respectively the inside hole of the screw nut has the same shape (2).
  • the screw is placed inside of the space-frame's rod (5) as a result; the bolting is not sustainable, with the turning of screw' s head ( 6) .
  • the number of the angle of the polygonical surface (1) , (2) is depend on the screw's size.
  • the figure (2) we can see the placing of the screw (3) and the screw nut (4) on the rod of the space frame (5) .

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)

Abstract

The screw-screw nut consists from screw (3) with no round body but polygonical (1) and the screw nut (4) that its hole has the same polygonical shape (2). When the screw (3) is placed on the hole of the screw nut (4) their polygonical surface are coming in touch (1), (2) so the bolting is succeed.

Description

SCREW-SCREW NUT PAIR FOR THE SPACE FRAME ASSEMBLY
The invention is reported on the pair of the screw-screw nut that is being used for the space-frame bolting.
According to the technique that is applied up to today, the screw and the screw nut are traverse perforated and inside of the hole a pin is placed so that turning the screw nut the screw is turned, in order to accomplish the bolting, since is not feasible the bolt of the screw with the rotation of his head. The hole,, which is made on the screw, has as a result the reduction of his cross-section and his strength. The inside surface of the hole is not able, to be galvanized so the oxidation is more often. The power, which is transferred from the screw nut to the screw, through the pin, has as a result the breaking of the pin in many cases. For that reason the bolting is not proper since the requested powers are not applied on the screw nut because of the fear of breaking the pin.
Advantages of the suggested method are that the strength of the screw in not reduced, since is not perforated, is being galvanized through all of its surface and finally the bolting is more easier and more secure since we avoid the use of the pin.
Main characteristic of the screw-screw nut pair, according to the present method, is that the body of the screw (3) is not round but it has polygonical form (1) .
Respectively the inside hole of the screw nut has the same shape (2). The screw is placed inside of the space-frame's rod (5) as a result; the bolting is not sustainable, with the turning of screw' s head ( 6) .
For that reason the placing of the screw nut is necessary (4) in order to surround the body of the screw (3) and of course their polygonical surface (1), (2) to come in touch.
With that way turning the screw nut (4) the screw (3) is turned too and the bolting is succeed.
The number of the angle of the polygonical surface (1) , (2) is depend on the screw's size. In the figure (1) we are able to see the ichnography and profile of the screw (3) and screw nut (4), where we can see the polygonical surface (1), (2). In the figure (2) we can see the placing of the screw (3) and the screw nut (4) on the rod of the space frame (5) .

Claims

V_.J_*-r**.iiX
1. The screw - screw nut pair consists from screw (3) that its body is not round but polygonical (1) and the screw nut (4) that its hole has the additional polygonical shape (2) .
2. The pair screw - screw nut according to the claim 1 is characterized from the polygonical bases (1), (2) which the number is depending from the size (cross-section) of the screw (3) .
PCT/GR2002/000068 2002-12-23 2002-12-23 Screw-screw nut pair for the space frame assembly WO2004057200A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/GR2002/000068 WO2004057200A1 (en) 2002-12-23 2002-12-23 Screw-screw nut pair for the space frame assembly
AU2002350981A AU2002350981A1 (en) 2002-12-23 2002-12-23 Screw-screw nut pair for the space frame assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/GR2002/000068 WO2004057200A1 (en) 2002-12-23 2002-12-23 Screw-screw nut pair for the space frame assembly

Publications (1)

Publication Number Publication Date
WO2004057200A1 true WO2004057200A1 (en) 2004-07-08

Family

ID=32676622

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GR2002/000068 WO2004057200A1 (en) 2002-12-23 2002-12-23 Screw-screw nut pair for the space frame assembly

Country Status (2)

Country Link
AU (1) AU2002350981A1 (en)
WO (1) WO2004057200A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1414979A (en) * 1919-06-09 1922-05-02 Carter Douglas Grand Convertible bolt
GB668859A (en) * 1949-05-02 1952-03-26 Geo H Gascoigne Company Ltd Improved jointing or coupling means for connecting together tubes or rods

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1414979A (en) * 1919-06-09 1922-05-02 Carter Douglas Grand Convertible bolt
GB668859A (en) * 1949-05-02 1952-03-26 Geo H Gascoigne Company Ltd Improved jointing or coupling means for connecting together tubes or rods

Also Published As

Publication number Publication date
AU2002350981A1 (en) 2004-07-14

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