US3587271A - Manually operable tool for installing blind anchor nuts - Google Patents

Manually operable tool for installing blind anchor nuts Download PDF

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Publication number
US3587271A
US3587271A US808492A US3587271DA US3587271A US 3587271 A US3587271 A US 3587271A US 808492 A US808492 A US 808492A US 3587271D A US3587271D A US 3587271DA US 3587271 A US3587271 A US 3587271A
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US
United States
Prior art keywords
mandrel
tool
shaft
key
bore
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
US808492A
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English (en)
Inventor
Robert M Rigot
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Aerpat AG
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Aerpat AG
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Filing date
Publication date
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Publication of US3587271A publication Critical patent/US3587271A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/0007—Tools for fixing internally screw-threaded tubular fasteners
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53987—Tube, sleeve or ferrule

Definitions

  • the shaft is both rotatable and reciprocable, so that the key can be disengaged from the mandrel to allow rotation of the mandrel in successive steps by repeated rotation of the handle through a small angle.
  • the mandrel, the key, and an anvil surrounding the mandrel may be removable and interchangeable.
  • the invention relates to a manually operable tool for installing blind anchor nuts.
  • f'blind anchor nut is meant a device comprising a tubular body portion and an internally threaded nut portion, the nut portion being capable of being pulled towards the tubular body portion to deform the body portion to tightly grip the walls of a suitable aperture in which the body portion is inserted, thereby to install the anchor nut securely in the aperture.
  • the anchor nut is blind" in that its installation requires access to one side only of the aperture.
  • One example of such a blind anchor nut is that widely sold under the Registered Trade Mark NUTSERT.
  • FIG. 1 is a side elevation, partially in section, of the example hand tool in a first operational configuration
  • FIG. 2 is a similar view of the tool in a second operational configuration
  • FIG. 3 is a section on the line III-III of FIG. 2;
  • FIG. 4 is a section on the line IV-IV of FIG. 2;
  • FIG. 5 is an end elevation of the tool, taken in the direction of the arrow V in FIG. 2;
  • FIG. 6 is an end elevation of the tool, taken in the direction of the arrow VI in FIG. 2;
  • FIGS. 7 to 11 illustrate on an enlarged scale, successive stages in the placing of an anchor nut by the tool.
  • the manually operable tool of this example comprises a body member ll having a bore 12 extending throughout its length. At one end of the bore there is an annular anvil 13 for engaging the body part of an anchor nut.
  • the anvil has a serrated outer end face 14 for frictionally engaging the body of the anchor nut, the serrations being in the form of radial V- section ribs and grooves.
  • the annular anvil surrounds an aperture in the form of a bore 15 through it, which is aligned coaxially with the bore 12 in the body member.
  • Formed integrally with the body member 11 is a grip in the form of a radially projecting handle 16, by means of which an operator can hold the body member and in particular prevent rotation thereof about the bore 12.
  • the tool also has an interchangeable mandrel I7 positioned in the bore 16 in the anvil.
  • the mandrel has an externally threaded portion 18 extending outwardly of the anvil, and at its other end a hexagonal socket 19 facing into the bore 12.
  • the socket 19 is provided within an enlarged portion 21 at the inner end of the mandrel which prevents the mandrel from moving out through the bore 15 in the anvil.
  • the mandrel I7 is provided by a hexagon cap socket screw, the enlarged portion 21 being the head of the screw. Washers may be provided between the screw head and the anvil 13.
  • the tool further comprises a shaft 22 which is reciprocable and rotatable within the bore 12 of the tool body.
  • the shaft 22 is a sliding and rotating fit within an internal annular flange at the end of the bore 12 remote from the anvil 13.
  • the shaft 22 is provided at its end nearer the anvil 13 with an interchangeable hexagon key 24 which will fit into and drivingly engage the socket 19 on the mandrel.
  • the shaft 22 is also provided with a handle 25 outside the body member of the tool.
  • the handle 25 projects transversely of the shaft 22, so that it can be used by the operator for both rotating and reciprocating the shaft 22 within the body member.
  • the shaft is freely reciprocable between a first position (illustrated in FIG.
  • the annular anvil I3 is interchangeable.
  • the anvil is releasably retained in the body member by means of a retaining screw 26 engaged in a threaded hole 27 in the wall of the bore 12, the screw 26 being screwed into engagement with the anvil.
  • the anvil is provided with a radial bore 28 into which the end of the screw 26 enters.
  • the interchangeable hexagon key 24 on the shaft 22 is received within a recess 29 in the end of the shaft.
  • the shape of the socket, and of the part of the key 24 which is received within the socket are of suitable complementary noncircular shape to ensure positive rotation of the key by the shaft.
  • the socket and the key body may both be hexagonal, or may be of cross-sectional shape of a circle with one or more flats in the side.
  • the key 24 is releasably retained in the socket 29 by means of a screw 31 engaged in a threaded hole 32 in the side wall of the socket 29, and engaging with the part of the key 24 within the socket.
  • releasable retaining means for releasably retaining the shaft 22 within the bore 12.
  • This releasable holding means is provided by an annular tapered shoulder 33 inside the bore 12 of the tool body and facing towards that end of the bore which has the anvil 13.
  • the shoulder 33 is provided by the inner end face of the flange 23.
  • the shaft 22 is provided with a pair of detent members in the form of two small steel balls 34, 35, carried within a transverse bore 36 in the shah.
  • the balls 34, 35 are each urged outwardly by means of a helical coil spring 37 working between them within the bore 36.
  • the metal surrounding each end of the bore 36 is staked or paned over to prevent either ball emerging completely from the bore.
  • the balls 34, 35 In order to withdraw the shaft 22 from the bore, it is necessary for the balls 34, 35 to be retracted into the bore 36 against the urging of the spring 37, by the inclined face of the shoulder 33.
  • the size and position of the balls 34, 35 and the slope of the annular shoulder 33, and the strength of the spring 37, are arranged such that the operator can withdraw the shaft 22 from the bore by a sharp tug on the handle 25, whilst holding the body member of the tool by means of the grip handle 16. This allows access to the key 24 for removal and interchange thereof.
  • the fastener comprises a tubular body portion 51, having at one end a small head in the form of an outwardly extending flange 52. At the other end the tubular body portion joins the narrower end of an internally threaded nut portion 53, which has a tapering exterior 54.
  • the fastener is to be placed in a circular hole 55 in a metal sheet 56.
  • the mandrel of the tool is chosen so that its threaded portion 18 mates with the internal threading 50 on the nut 53.
  • the fastener In use, the fastener is first inserted into the hole 55 with the head 52 towards the operator, until the head 52 abuts the sheet 56. With the shaft 22 of the tool in its first position (in which the key 24 engages the mandrel socket t9), the operator offers the threaded end E8 of the mandrel through the body portion 51 of the fastener and into the threaded nut portion, rotating the handle 25 continuously in a clockwise direction by turning it with one finger, whilst holding the body of the tool in his other hand by means of the grip handle 16.
  • the hand tool of this example enables the blind anchor nuts to be installed by repeated application of such a force, whilst at.the same time the construction and operation of the tool is extremely simple. It is intended that this tool should be used in situations where power operated tools cannot be used, i.e. for repair work under field conditions, or as part of the repair tool kit of a motor vehicle.
  • the tool allows easy and speedy interchange of the screw threaded mandrel, together with interchange of the key 24 and anvil 13, which is necessary since a different diameter mandrel will certainly require an anvil with a different diameter aperture and possibly a different size of driving key for the hexagonal socket.
  • the tool can readily be adapted to place blind anchor nuts with different sizes and/or internal thread.
  • the tool may, of source, be used to install blind anchor nuts of types other than that described in the foregoing example.
  • the tool Since the tool is operated by relative reciprocation of the two handles 16 and 25 over a relatively small angle, it is possible to use the tool to install a blind anchor nut in situations which have relatively restricted access, for example near the corner point of three mutually perpendicular walls.
  • the invention may of course be put Into practlce otherwise an annular anvil at one end of the bore for engaging the body part of an anchor nut, the annular anvil surrounding an aperture aligned with the bore;
  • an interchangeable mandrel positioned in the aperture in the anvil, the said mandrel having an externally threaded portion extending outwardly of the anvil and a socket facing into the bore;
  • a shaft rotatable and reciprocable in the bore of the body member which shaft is provided at one end with key which will fit into the socket on the mandrel in driving engagement therewith, the shaft also being provided with a handle outside the body member of the tool by means of which the shaft can be both rotated and reciprocated with respect to the body member;
  • the shaft being reciprocable between a first position in which the key on the shaft engages in the socket on the mandrel thereby allowing rotation of the mandrel by means of the handle, and a second position in which the key disengages from the socket thereby allowing rotation of the handle without rotation of the mandrel.
  • a tool as claimed in claim 2 including releasable retaining means for releasably retaining the said anvil on the body member ofthe tool.
  • releasable retaining means comprises a threaded hole in the body member, and a retaining screw screwed into the hole and into engagement with the anvil.
  • a tool as claimed in claim 1 including means for releasably retaining the said reciprocable shaft within the bore of the body member, said retaining means being releasable to permit withdrawal of the shaft from the bore to enable access to the key.
  • the said releasable retaining means comprises an annular shoulder inside the bore of the body member of the tool facing towards the said one end of the bore, at least one detent member carried by the said reciprocable shaft, and spring means urging the or each said detent member transversely outwardly of the shaft so it engages the said annular shouldcr along an inclined line of contact, the arrangement of the or each detent member and the annular shoulder, and the strength of the spring means, being such that an operator can by a manual pull on the shaft with respect to the body member overcome the spring means and withdraw the shaft out of the bore.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dowels (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
US808492A 1969-03-19 1969-03-19 Manually operable tool for installing blind anchor nuts Expired - Lifetime US3587271A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80849269A 1969-03-19 1969-03-19

Publications (1)

Publication Number Publication Date
US3587271A true US3587271A (en) 1971-06-28

Family

ID=25198925

Family Applications (1)

Application Number Title Priority Date Filing Date
US808492A Expired - Lifetime US3587271A (en) 1969-03-19 1969-03-19 Manually operable tool for installing blind anchor nuts

Country Status (5)

Country Link
US (1) US3587271A (enrdf_load_stackoverflow)
JP (1) JPS5037919B1 (enrdf_load_stackoverflow)
DE (1) DE2009428C3 (enrdf_load_stackoverflow)
FR (1) FR2035064B1 (enrdf_load_stackoverflow)
GB (1) GB1238154A (enrdf_load_stackoverflow)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074554A (en) * 1973-03-29 1978-02-21 Aerpat A.G. Fastener placing apparatus
DE2748093A1 (de) * 1977-04-11 1978-10-19 Avibank Mfg Von hand betaetigbares werkzeug zur installation blinder ankermuttern
US4140000A (en) * 1977-05-05 1979-02-20 Gesipa Blindniettechnik Gmbh Pliers-type tool for setting blind-rivet nuts
DE2832170A1 (de) * 1978-07-21 1980-01-31 Hilti Ag Duebel-setzwerkzeug
US4201072A (en) * 1978-12-20 1980-05-06 Snell John H Tool for installation of toggle-screw anchors
US4285225A (en) * 1979-12-07 1981-08-25 Snell John H Tool for installation of toggle-screw anchors
FR2518924A1 (fr) * 1981-12-30 1983-07-01 Usm Corp Outil de montage de cheville expansible par vissage
US4400960A (en) * 1981-05-13 1983-08-30 Alan Martin Tool for setting blind fasteners
US4402203A (en) * 1982-07-22 1983-09-06 Deutsch Fastener Corp. Fastener installation tool
WO1990009261A3 (en) * 1989-01-30 1990-10-04 Wayne R Falls Crush nut applicator, and methods of constructing and utilizing same
US5174174A (en) * 1992-01-13 1992-12-29 The Boeing Company Installation tool for restrictor plate in shock strut
EP0940227A3 (de) * 1998-03-03 2000-05-24 Herbert Schruff Werkzeug zum Vernieten von Blindnietmuttern
US20040163229A1 (en) * 2003-02-25 2004-08-26 Michael Janusz Installation tool for setting anchors
US20060236742A1 (en) * 2005-04-26 2006-10-26 Patrick Monahan Setting tool
US20090158567A1 (en) * 2007-12-21 2009-06-25 Geoffrey Scott Fulton Apparatus, system, and method for fastening screw and sheath anchors
US20110203088A1 (en) * 2010-02-22 2011-08-25 John Kenneth Hastings Tool for installing rivet nuts
US20110259165A1 (en) * 2010-04-21 2011-10-27 Rexon Industrial Corp., Ltd. Saw machine riving knife adjustment mechanism
CN101564836B (zh) * 2008-04-24 2012-10-31 株式会社迪思科 支座凸缘拆卸工具和支座凸缘的拆卸方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8810183D0 (en) * 1988-04-29 1988-06-02 Darlington & Sons Ltd Threaded insert placing tool
DE19502855C2 (de) * 1995-01-30 1997-11-27 Horst Pietrzyk Mundstück für ein Setzwerkzeug für Blindnietmuttern
FR2902847B1 (fr) * 2006-06-27 2009-10-16 Clusienne Clufix Soc Par Actio Ecrou a sertir

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074554A (en) * 1973-03-29 1978-02-21 Aerpat A.G. Fastener placing apparatus
DE2748093A1 (de) * 1977-04-11 1978-10-19 Avibank Mfg Von hand betaetigbares werkzeug zur installation blinder ankermuttern
US4121444A (en) * 1977-04-11 1978-10-24 Avibank Mfg., Inc. Manually operable tool for installing blind anchor nuts
JPS6295876U (enrdf_load_stackoverflow) * 1977-04-11 1987-06-18
US4140000A (en) * 1977-05-05 1979-02-20 Gesipa Blindniettechnik Gmbh Pliers-type tool for setting blind-rivet nuts
DE2832170A1 (de) * 1978-07-21 1980-01-31 Hilti Ag Duebel-setzwerkzeug
US4201072A (en) * 1978-12-20 1980-05-06 Snell John H Tool for installation of toggle-screw anchors
US4285225A (en) * 1979-12-07 1981-08-25 Snell John H Tool for installation of toggle-screw anchors
US4400960A (en) * 1981-05-13 1983-08-30 Alan Martin Tool for setting blind fasteners
FR2518924A1 (fr) * 1981-12-30 1983-07-01 Usm Corp Outil de montage de cheville expansible par vissage
US4447923A (en) * 1981-12-30 1984-05-15 Usm Corporation Setting tool for wall anchor
US4402203A (en) * 1982-07-22 1983-09-06 Deutsch Fastener Corp. Fastener installation tool
WO1990009261A3 (en) * 1989-01-30 1990-10-04 Wayne R Falls Crush nut applicator, and methods of constructing and utilizing same
US5174174A (en) * 1992-01-13 1992-12-29 The Boeing Company Installation tool for restrictor plate in shock strut
EP0940227A3 (de) * 1998-03-03 2000-05-24 Herbert Schruff Werkzeug zum Vernieten von Blindnietmuttern
US20040163229A1 (en) * 2003-02-25 2004-08-26 Michael Janusz Installation tool for setting anchors
US7065855B2 (en) * 2003-02-25 2006-06-27 Textron Inc. Installation tool for setting anchors
US20060236742A1 (en) * 2005-04-26 2006-10-26 Patrick Monahan Setting tool
US7237413B2 (en) 2005-04-26 2007-07-03 Acument Intellectual Properties Llc Setting tool
US20090158567A1 (en) * 2007-12-21 2009-06-25 Geoffrey Scott Fulton Apparatus, system, and method for fastening screw and sheath anchors
CN101564836B (zh) * 2008-04-24 2012-10-31 株式会社迪思科 支座凸缘拆卸工具和支座凸缘的拆卸方法
US20110203088A1 (en) * 2010-02-22 2011-08-25 John Kenneth Hastings Tool for installing rivet nuts
US8485011B2 (en) * 2010-02-22 2013-07-16 John Kenneth Hastings Tool for installing rivet nuts
US20110259165A1 (en) * 2010-04-21 2011-10-27 Rexon Industrial Corp., Ltd. Saw machine riving knife adjustment mechanism
US8893601B2 (en) * 2010-04-21 2014-11-25 Rexon Industrial Corp., Ltd. Saw machine riving knife adjustment mechanism

Also Published As

Publication number Publication date
JPS5037919B1 (enrdf_load_stackoverflow) 1975-12-05
DE2009428B2 (de) 1973-09-27
GB1238154A (enrdf_load_stackoverflow) 1971-07-07
DE2009428A1 (de) 1970-10-29
DE2009428C3 (de) 1974-04-25
FR2035064A1 (enrdf_load_stackoverflow) 1970-12-18
FR2035064B1 (enrdf_load_stackoverflow) 1976-01-16

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