ES258495A1 - Self-tapping screws - Google Patents

Self-tapping screws

Info

Publication number
ES258495A1
ES258495A1 ES0258495A ES258495A ES258495A1 ES 258495 A1 ES258495 A1 ES 258495A1 ES 0258495 A ES0258495 A ES 0258495A ES 258495 A ES258495 A ES 258495A ES 258495 A1 ES258495 A1 ES 258495A1
Authority
ES
Spain
Prior art keywords
self
tapping screws
sides
intersection
blank
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
ES0258495A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Res Engineering & Manufacturing
Original Assignee
Res Engineering & Manufacturing
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 Res Engineering & Manufacturing filed Critical Res Engineering & Manufacturing
Publication of ES258495A1 publication Critical patent/ES258495A1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
    • B21H3/027—Rolling of self-tapping screws
    • 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
    • F16B25/0042—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 the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
    • F16B25/0052—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 the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw the ridge having indentations, notches or the like in order to improve the cutting behaviour
    • 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
    • F16B25/0078—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw with a shaft of non-circular cross-section or other special geometric features of the shaft
    • 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

Abstract

A method of making a self-tapping member, a method that includes obtaining an elementary piece so that it has a rolling diameter, not circular, whose shape approximates that of an equilateral triangle with arched sides, each with with respect to a center located on a radius that leaves the axis of the element passing through the intersection of the other two sides; and the subsequent termination of said blank by forming threads therein. (Machine-translation by Google Translate, not legally binding)
ES0258495A 1959-06-09 1960-05-31 Self-tapping screws Expired ES258495A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US81916759A 1959-06-09 1959-06-09

Publications (1)

Publication Number Publication Date
ES258495A1 true ES258495A1 (en) 1960-11-16

Family

ID=25227379

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0258495A Expired ES258495A1 (en) 1959-06-09 1960-05-31 Self-tapping screws

Country Status (6)

Country Link
BE (1) BE591674A (en)
DE (1) DE1291948B (en)
DK (1) DK134289B (en)
ES (1) ES258495A1 (en)
GB (1) GB957675A (en)
SE (1) SE320846B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3377906A (en) * 1966-05-02 1968-04-16 Res Engineering And Mfg Inc Thread-forming tool
US3643722A (en) * 1969-05-16 1972-02-22 Parker Kalon Corp Self-locking threaded fasteners
US4040328A (en) * 1976-03-10 1977-08-09 Research Engineering & Manufacturing, Inc. Thread-forming fastener having dual lobulation and dies for making the same
US5964560A (en) * 1995-08-15 1999-10-12 Henriksen; Arne Screw fastener
US6375401B1 (en) * 1999-10-20 2002-04-23 Continental/Midland, Inc. Fastener shank crossection utilizing non-circular constant breadth curves
US6468014B2 (en) * 1999-12-01 2002-10-22 Chun Chen Screw Co., Ltd. Screw with spiral triangular threads
US6254327B1 (en) * 1999-12-01 2001-07-03 Chun Chen Screw Co., Ltd. Screw with spiral triangular threads
CN2833213Y (en) * 2005-09-28 2006-11-01 欧维国际贸易(上海)有限公司 Easy-to-tap screw

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2183688A (en) * 1937-04-24 1939-12-19 Illinois Tool Works Means for and method of rolling screw threads
US2174968A (en) * 1938-10-10 1939-10-03 Economy Screw Corp Screw making machine
US2352982A (en) * 1942-06-25 1944-07-04 American Screw Co Screw for plastics
US2483186A (en) * 1945-10-02 1949-09-27 New Process Screw Corp Apparatus for rolling screws
FR1177073A (en) * 1957-05-29 1959-04-20 Besly Welles Corp Taps without splines for tapping metal

Also Published As

Publication number Publication date
DK134289C (en) 1977-03-07
GB957675A (en) 1964-05-13
BE591674A (en) 1960-10-03
DK134289B (en) 1976-10-11
SE320846B (en) 1970-02-16
DE1291948B (en) 1969-04-03

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