AT248803B - Blechbohrtreibschraube - Google Patents

Blechbohrtreibschraube

Info

Publication number
AT248803B
AT248803B AT901961A AT901961A AT248803B AT 248803 B AT248803 B AT 248803B AT 901961 A AT901961 A AT 901961A AT 901961 A AT901961 A AT 901961A AT 248803 B AT248803 B AT 248803B
Authority
AT
Austria
Prior art keywords
diameter
shank
thread
sheet metal
threadless
Prior art date
Application number
AT901961A
Other languages
English (en)
Original Assignee
Lennewerk Altena Gmbh
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 Lennewerk Altena Gmbh filed Critical Lennewerk Altena Gmbh
Application granted granted Critical
Publication of AT248803B publication Critical patent/AT248803B/de

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
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/001—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed
    • F16B25/0021—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed the material being metal, e.g. sheet-metal or aluminium
    • 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
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0084—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by geometric details of the tip
    • 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
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/10—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws
    • F16B25/103—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws by means of a drilling screw-point, i.e. with a cutting and material removing action

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Drilling Tools (AREA)

Description


   <Desc/Clms Page number 1> 
 



  Blechbohrtreib schraube 
 EMI1.1 
 

 <Desc/Clms Page number 2> 

 
 EMI2.1

Claims (1)

  1. ;PATENTANSPRÜCHE : 1. Blechbohrtreibschraube, die einen Gewindeteil von konstantem äusseren Gewindedurchmesser und eine Bohrspitze mit mindestens einer eine Schneidkante bildenden Längsnut besitzt, dadurch gekennzeichnet, dass an dem Gewindeteil (c) von konstantem äusseren Gewindedurchmesser ein Gewindeteil (d) anschliesst, dessen äusserer Gewindedurchmesser zur Schraubenspitze hin allmählich abnimmt, dass daran ein gewindeloser Schaft (e) anschliesst und dass an diesen die Bohrspitze (f) anschliesst, deren Längsnuten (n) höchstens bis in den genannten gewindelosen Schaft (e) reichen.
    2. Blechbohrtreibschraube nach Anspruch 1, dadurch gekennzeichnet, dass dergesamte Schaft der Schraube - wie an sich bekannt-gleichen Durchmesser aufweist.
    3. Blechbohttreibschraube nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Längsnut (n) durch Kaltschlagen, vorzugsweise beim Kaltschlagen der Spitze, hergestellt wird.
    4. Blechbohrtreibschraube nach Anspruch 1 oder 3, dadurch gekennzeichnet, dass der Schaft in seinem gewindelosen Teil (e) einen kleineren Durchmesser hat als in seinem das Gewinde tra- genden Teil (c), wobei der Übergang vom grösseren zum kleineren Schaftdurchmesser durch eine Verjün- gung (dol) des Schaftes gebildet ist.
AT901961A 1960-12-19 1961-11-28 Blechbohrtreibschraube AT248803B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL0037773 1960-12-19

Publications (1)

Publication Number Publication Date
AT248803B true AT248803B (de) 1966-08-25

Family

ID=7268029

Family Applications (1)

Application Number Title Priority Date Filing Date
AT901961A AT248803B (de) 1960-12-19 1961-11-28 Blechbohrtreibschraube

Country Status (1)

Country Link
AT (1) AT248803B (de)

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