US3626803A - Expansion anchor - Google Patents

Expansion anchor Download PDF

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Publication number
US3626803A
US3626803A US782553A US3626803DA US3626803A US 3626803 A US3626803 A US 3626803A US 782553 A US782553 A US 782553A US 3626803D A US3626803D A US 3626803DA US 3626803 A US3626803 A US 3626803A
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US
United States
Prior art keywords
expander
expansion anchor
sleeve
trailing end
surface portion
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 - Lifetime
Application number
US782553A
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English (en)
Inventor
Heinrich Liebig
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Individual
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Individual
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Publication date
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Publication of US3626803A publication Critical patent/US3626803A/en
Anticipated expiration legal-status Critical
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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
    • F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
    • F16B13/06—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve
    • F16B13/063—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander
    • F16B13/066—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander fastened by extracting a separate expander-part, actuated by the screw, nail or the like
    • F16B13/068—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander fastened by extracting a separate expander-part, actuated by the screw, nail or the like expanded in two or more places

Definitions

  • An expansion anchor has an expansion anchor sleeve having in the region of its leading end and inwardly spaced from the leading end two sections of a central passage which converge in the direction from the leading end towards BACKGROUND OF THE INVENTION
  • the present invention relates generally to expansion anchors, and more particularly to the type of expansion anchor which is insertable into an expansion anchor hole provided in a support structure such as a masonry wall or the like.
  • expansion anchors with a dual-expanding action.
  • Such expansion anchors conventionally comprise an expansion anchor sleeve, an actuating member in fonn of a spool or the like extending through the central passage of the sleeve from the trailing end towards the leading end which is first to be inserted into the expansion anchor hole, and a suitable expander member which meshes or is otherwise connected with the actuating member to be drawn by the latter in the direction towards the trailing end of the sleeve, thereby radially expanding the same into engagememt with the surrounding material of the support structure.
  • an expansion anchor having an expansion anchor sleeve provided with a trailing end and a leading end, the latter of which is arranged to be inserted into an expansion anchor hole in a support structure.
  • First and second expander means is provided and associated with the sleeve at locations which are respectively closer to the leading end and the trailing end.
  • Actuating means cooperates with the expander means and is operative for effecting movement of the expander means relative to the sleeve in direction towards the trailing end, and the first and second expander means are both operative for effecting radial expansion of the sleeve in response to movement in the aforementioned direction.
  • both expansion means acts in one and the same direction, namely in direction outwardly of the expansion anchor hole.
  • This means that if subsequent to the installation of the expansion anchor strong tensile stresses are exerted upon the latter in a sense tending to withdraw it form the expansion anchor hole-for instance vibrations, shocks, alternating tensile stress and relaxation-then these stresses will be simultaneously transmitted to both expander means and act thereupon in such a manner that both expander means will provide additional expanding action.
  • the present construction is in very decided contrast to known dual-expansion types of expansion anchors wherein excessive stresses cause the trailing expander means to undergo a reduction in its expansion effectiveness as opposed to the present construction where this expansion effectiveness is strongly increased under such circumstances.
  • FIG. I is an axial section through an embodiment; illustrating the invention.
  • FIG. 2 is a transverse section of FIG. 1.
  • the expansion anchor sleeve is identified with reference numeral l and provided in known manner with longitudinal slots 9 so as to be subdivided into a plurality of tongues 10 for example four such tongues. At their free ends they may be connected with rupturable webs 11 or the like, also in known manner, so that they initially are held together and become separated only subsequent to insertion into an expansion anchor hole and expanding by the expander means. If such webs are provided, they are generally provided in the region of the trailing end of the expansion anchor sleeve, (near the top of FIG. I although they can also be provided in the region of the leadingend.
  • two expander means in form of two expander members are provided.
  • One of these is identified with reference numeral 2 and provided at the leading end of the expansion anchor sleeve 1.
  • FIG. I shows, it meshes with the external screw threads of a screw, bolt or other actuating member 3 which extends through the central passage of the expansion anchor sleeve 1 and has its head 4 located outside the trailing end of the sleeve 1 so that it can be turned in a sense efi'ecting a drawing of the expander member 2 deeper into the expansion anchor sleeve 1.
  • the second expander member is identified with reference numeral 5 and located closer to the trailing end of the expansion anchor sleeve 1.
  • a washer 7 is provided beneath the head 4 of the actuating member 3 and abuts against the trailing end of the expansion anchor sleeve 1 so that the head of the actuating member 3 can bear against the washer 7 when it is rotated in a sense drawing the expander members 2 and 5 deeper into the expansion anchor sleeve 1. It is advantageous if the washer 7 extends radially outwardly beyond the expansion anchor sleeve 1 so that it may abut against the surrounding material of the support structure in which the expansion anchor hole is formed. Such radial outward projection is illustrated in FIG. 1.
  • a sleeve 8 or tubular member 8 in the form of a hollow cylinder is located between the expander members 2 and 5. Its length is such that the trailing expander member 5 which can be loosely shifted on the actuating member 3 in axial direction thereof, can abut against the tubular member 8 and be supported via the same on the rearwardly directed end face of the leading expander member 2.
  • the length of the tubular member 8 is so selected that the expansion provided by the expander members 2 and 5 is substantially simultaneous although it should be understood that, depending on the given requirements of any situation, the sleeve or tubular member 8 could also be made somewhat longer so that the trailing expander member would first provide for radial expansion with the expansion provided by the leading expander member 2 following thereafter. Conversely, if the length of the tubular member 8 is somewhat reduced, then expanding action will first be provided by the leading expander member 2 and subsequently by the trailing expander member 5.
  • actuating member 3 is shown to be provided with an integral head 4, it will be clear that it is possible to use an actuating member having no head and being rigid with and suitably secured to the leading expander member 2, with a nut being provided in place of head 4.
  • the expander member 5 be located in the trailing half of the expansion anchor sleeve 1, which means that the inclined surface portions 6 are not to extend forwardly beyond the center line between the trailing end leading halves of the expansion anchor sleeve 1.
  • the tubular member 1 as well as the expander members 2 and 5 are discrete elements.
  • the tubular member 1 may be integral or rigid with one or both of the expander members, or it may be of one piece with one or both thereof.
  • the construction of the expansion anchor is such that the expander members 2 and 5 are located closely together, they may be manufactured of one piece without the interposition of the tubular member 8.
  • An expansion anchor comprising an expansion anchor sleeve having a trailing end, a leading end having an opening and being arranged to be inserted into an expansion anchor hole in a support structure, and four circumferentially distributed slots extending from said leading end toward said trailing end and subdividing a longitudinally extending section of said sleeve into four tongues; rupturable webs connecting adjacent ones of said tongues in the region of said trailing end; an elongated through-passage provided in said sleeve and including a first inner circumferential conical surface portion in the region of said leading end and a second inner circumferential conical surface portion closer to said trailing end, both of said surface portions converging towards said trailing end and being located in said section and an intermediate cylindrical surface portion extending between the narrower rear end of said first conical surface portion and the wider front end of said second conical surface portion, an internally threaded first expander member located in said passage within said first

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dowels (AREA)
  • Joining Of Building Structures In Genera (AREA)
US782553A 1967-12-16 1968-12-10 Expansion anchor Expired - Lifetime US3626803A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1625394 1967-12-16

Publications (1)

Publication Number Publication Date
US3626803A true US3626803A (en) 1971-12-14

Family

ID=5682866

Family Applications (1)

Application Number Title Priority Date Filing Date
US782553A Expired - Lifetime US3626803A (en) 1967-12-16 1968-12-10 Expansion anchor

Country Status (9)

Country Link
US (1) US3626803A (de)
AT (1) AT286586B (de)
BE (1) BE725254A (de)
CH (1) CH485130A (de)
DE (1) DE1625394B1 (de)
FR (1) FR1595774A (de)
GB (1) GB1229666A (de)
NL (1) NL6817423A (de)
SE (1) SE349103B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3908977A (en) * 1974-04-03 1975-09-30 Us Interior Ultrahigh vacuum mounting fixture
US3919916A (en) * 1974-09-12 1975-11-18 Illinois Tool Works Drive rivet assembly
US4768900A (en) * 1984-05-01 1988-09-06 Burland John B Piles and anchorages
US11261894B2 (en) * 2016-04-27 2022-03-01 Hilti Aktiengesellschaft Anchor having a wave-shaped sleeve

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3005544A1 (de) * 1980-02-14 1981-08-20 Frank 5758 Fröndenberg Knoche Klemmkopfduebel aus kunststoff
CH655650B (de) * 1982-02-23 1986-05-15
GB2139726B (en) * 1983-05-12 1986-08-20 Tucker Fasteners Ltd Bolt anchor
DE3336168A1 (de) * 1983-10-05 1985-04-18 Horst 4320 Hattingen Christopeit Bohrkonsole, insbesondere zur befestigung von plattenheizkoerpern

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US966515A (en) * 1909-11-10 1910-08-09 James H Baker Expansion-bolt.
US1033447A (en) * 1912-02-08 1912-07-23 Herbert W Mower Expansion-bolt.
US1302324A (en) * 1917-05-15 1919-04-29 Thomas Frank Devlin Expansion-bolt.
US1654346A (en) * 1922-12-13 1927-12-27 John Edward Ogden Bolt anchor
US1795057A (en) * 1927-01-21 1931-03-03 Edward Ogden Company J Expansion shield
US1972715A (en) * 1933-12-14 1934-09-04 Newhall Henry B Corp Bolt anchor
US2349075A (en) * 1943-01-30 1944-05-16 Chance Co Ab Expanding anchor
US3003730A (en) * 1959-06-12 1961-10-10 Paul L Dodds Cantilever counter stool
FR1328744A (fr) * 1962-07-12 1963-05-31 Cheville à expansion cylindrique
GB1091657A (en) * 1965-09-20 1967-11-22 Ejner Helmuth Lindeberg Improvements in or relative to expansion bushings

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1265866A (en) * 1916-01-31 1918-05-14 Charles N Ackerman Expansion-bolt.
US1361836A (en) * 1917-09-28 1920-12-14 Devlin Thomas Frank Expansion-bolt

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US966515A (en) * 1909-11-10 1910-08-09 James H Baker Expansion-bolt.
US1033447A (en) * 1912-02-08 1912-07-23 Herbert W Mower Expansion-bolt.
US1302324A (en) * 1917-05-15 1919-04-29 Thomas Frank Devlin Expansion-bolt.
US1654346A (en) * 1922-12-13 1927-12-27 John Edward Ogden Bolt anchor
US1795057A (en) * 1927-01-21 1931-03-03 Edward Ogden Company J Expansion shield
US1972715A (en) * 1933-12-14 1934-09-04 Newhall Henry B Corp Bolt anchor
US2349075A (en) * 1943-01-30 1944-05-16 Chance Co Ab Expanding anchor
US3003730A (en) * 1959-06-12 1961-10-10 Paul L Dodds Cantilever counter stool
FR1328744A (fr) * 1962-07-12 1963-05-31 Cheville à expansion cylindrique
GB1091657A (en) * 1965-09-20 1967-11-22 Ejner Helmuth Lindeberg Improvements in or relative to expansion bushings

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3908977A (en) * 1974-04-03 1975-09-30 Us Interior Ultrahigh vacuum mounting fixture
US3919916A (en) * 1974-09-12 1975-11-18 Illinois Tool Works Drive rivet assembly
US4768900A (en) * 1984-05-01 1988-09-06 Burland John B Piles and anchorages
US11261894B2 (en) * 2016-04-27 2022-03-01 Hilti Aktiengesellschaft Anchor having a wave-shaped sleeve

Also Published As

Publication number Publication date
CH485130A (de) 1970-01-31
NL6817423A (de) 1969-06-18
AT286586B (de) 1970-12-10
SE349103B (de) 1972-09-18
FR1595774A (de) 1970-06-15
GB1229666A (de) 1971-04-28
DE1625394B1 (de) 1971-12-16
BE725254A (de) 1969-06-11

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