Tamper-resistant fastener

Neidigk, Stephen; Wilson, Zachary Medaris

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A - human necessities
A01 - agriculture
A21 - baking
A22 - butchering
A23 - foods or foodstuffs
A24 - tobacco
A41 - wearing apparel
A42 - headwear
A43 - footwear
A44 - haberdashery
A45 - hand or travelling articles
A46 - brushware
A47 - furniture
A61 - medical or veterinary science
A62 - life-saving
A63 - sports
A99 - subject matter not otherwise provided for in this section
B - performing operations
B01 - physical or chemical processes or apparatus in general
B02 - crushing, pulverising, or disintegrating
B03 - separation of solid materials using liquids or using pneumatic tables or jigs
B04 - centrifugal apparatus or machines for carrying-out physical or chemical processes
B05 - spraying or atomising in general
B06 - generating or transmitting mechanical vibrations in general
B07 - separating solids from solids
B08 - cleaning
B09 - disposal of solid waste
B21 - mechanical metal-working without essentially removing material
B22 - casting
B23 - machine tools
B24 - grinding
B25 - hand tools
B26 - hand cutting tools
B27 - working or preserving wood or similar material
B28 - working cement, clay, or stone
B29 - working of plastics
B30 - presses
B31 - making articles of paper, cardboard or material worked in a manner analogous to paper
B32 - layered products
B33 - additive manufacturing technology
B41 - printing
B42 - bookbinding
B43 - writing or drawing implements
B44 - decorative arts
B60 - vehicles in general
B61 - railways
B62 - land vehicles for travelling otherwise than on rails
B63 - ships or other waterborne vessels
B64 - aircraft
B65 - conveying
B66 - hoisting
B67 - opening, closing {or cleaning} bottles, jars or similar containers
B68 - saddlery
B81 - microstructural technology
B82 - nanotechnology
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C01 - inorganic chemistry
C02 - treatment of water, waste water, sewage, or sludge
C03 - glass
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C12 - biochemistry
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C14 - skins
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C22 - metallurgy
C23 - coating metallic material
C25 - electrolytic or electrophoretic processes
C30 - crystal growth
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D - textiles
D01 - natural or man-made threads or fibres
D02 - yarns
D03 - weaving
D04 - braiding
D05 - sewing
D06 - treatment of textiles or the like
D07 - ropes
D10 - indexing scheme associated with sublasses of section d, relating to textiles
D21 - paper-making
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E - fixed constructions
E01 - construction of roads, railways, or bridges
E02 - hydraulic engineering
E03 - water supply
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E06 - doors, windows, shutters, or roller blinds in general
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F - mechanical engineering
F01 - machines or engines in general
F02 - combustion engines
F03 - machines or engines for liquids
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F05 - indexing schemes relating to engines or pumps in various subclasses of classes f01-f04
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F26 - drying
F27 - furnaces
F28 - heat exchange in general
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F42 - ammunition
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G - physics
G01 - measuring
G02 - optics
G03 - photography
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G06 - computing
G07 - checking-devices
G08 - signalling
G09 - education
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G11 - information storage
G12 - instrument details
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H - electricity
H01 - basic electric elements
H02 - generation
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Y02 - technologies or applications for mitigation or adaptation against climate change
Y04 - information or communication technologies having an impact on other technology areas
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Title: Tamper-resistant fastener

Abstract

A tamper-resistant threaded fastener including a circular head having a slot formed in the head transverse to the longitudinal axis, the slot having an enlarged region intermediate an apex and a base of the slot. A cap member includes a head having a drive feature formed therein, the head extending to a first shank portion, extending to an enlarged second shank portion, extending to a foot. The cap member is insertable in the slot only from a direction transverse to the longitudinal axis. During rotational installation of the fastener and cap member in a threaded counterbored opening for securing a barrier for protecting an asset, the foot shears inside the slot at a predetermined rotational drive force, the cap member being rotatable in the opening and protectively covering the fastener head.

Inventors:: Neidigk, Stephen; Wilson, Zachary Medaris

Issue Date:: 2021-04-06

Research Org.:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1823808

Patent Number(s):: 10968942

Application Number:: 16/166,463

Assignee:: National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)

Patent Classifications (CPCs):: F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16B - DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING

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F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16B - DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
F16B23/0069 - {with holes to be engaged with corresponding pins on the tool or protruding pins to be engaged with corresponding holes on the tool}
F16B31/021 - {by means of a frangible part
F16B35/045 - {for retention or rotation by a tool
F16B35/06 - Specially-shaped heads
F16B37/042 - {locking by rotation}
F16B37/14 - Cap nuts
F16B41/005 - {Measures against unauthorised operation of bolts, nuts or pins
F16B5/02 - by means of fastening members using screw-thread
F16B5/0208 - {using panel fasteners, i.e. permanent attachments allowing for quick assembly}

Show less

DOE Contract Number:: NA0003525

Resource Type:: Patent

Resource Relation:: Patent File Date: 10/22/2018

Country of Publication:: United States

Language:: English

Citation Formats


                    Neidigk, Stephen, and Wilson, Zachary Medaris. Tamper-resistant fastener.  United States: N. p., 2021. 
        Web.

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                    Neidigk, Stephen, & Wilson, Zachary Medaris. Tamper-resistant fastener.  United States.

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                    Neidigk, Stephen, and Wilson, Zachary Medaris. Tue .  
        "Tamper-resistant fastener".  United States.  https://www.osti.gov/servlets/purl/1823808.

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@article{osti_1823808,

  title        = {Tamper-resistant fastener},

  author       = {Neidigk, Stephen and Wilson, Zachary Medaris},

  abstractNote = {A tamper-resistant threaded fastener including a circular head having a slot formed in the head transverse to the longitudinal axis, the slot having an enlarged region intermediate an apex and a base of the slot. A cap member includes a head having a drive feature formed therein, the head extending to a first shank portion, extending to an enlarged second shank portion, extending to a foot. The cap member is insertable in the slot only from a direction transverse to the longitudinal axis. During rotational installation of the fastener and cap member in a threaded counterbored opening for securing a barrier for protecting an asset, the foot shears inside the slot at a predetermined rotational drive force, the cap member being rotatable in the opening and protectively covering the fastener head.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2021},

  month        = {4}

}

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Works referenced in this record:

Secure fastener assembly
patent, January 2016

Andersen, Trent; Kutz, Kurt
US Patent Document 9,239,072
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/9239072

Damper device
patent-application, January 2002

Ichimaru, Takahide
US Patent Application 09/885533; 20020003993
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20020003993

Floating Replaceable Anchor Nut assembly
patent, April 1973

Whiteside, Roger B.; Cooper, William
US Patent Document 3,729,040
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/3729040

Nut locking apparatus
patent, November 1995

Rushing, Robert E.; Rushing, Linda L.
US Patent Document 5,469,726
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5469726

Fastener lockout device
patent-application, August 2004

Swanson, Richard C.
US Patent Application 10/358040; 20040148985
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20040148985

Quick-release fastener system
patent, July 2001

Pratt, John D.
US Patent Document 6,261,042
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6261042

Locking system with an identification mark for threaded fasteners
patent, November 1995

Leeson, Plato J.
US Patent Document 5,468,103
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5468103

Bidirectional ramped disposable torque limiting device
patent-application, February 2017

Ivinson, David; Nino, John; Norsworthy, Gary
US Patent Application 15/331710; 20170035485
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20170035485

Tamper resistant valve stem cap
patent, May 2000

Maddalena, Kris L.
US Patent Document 6,062,787
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6062787

Wheel locking assembly
patent, August 2007

Sanchez, Lorenzo
US Patent Document 7,252,470
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/7252470

Pin and grommet
patent, March 1993

Hoyle, Christopher J.; Peek, Brian R.
US Patent Document 5,193,961
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5193961

Structure for converting standard drive fastener to security fastener
patent, August 1998

Lanham, Thomas R.
US Patent Document 5,791,848
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5791848

Tamper proof fastener
patent-application, April 2007

Nilsen, Martin J.
US Patent Application 11/505655; 20070092352
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20070092352

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Similar Records

Title: Tamper-resistant fastener

Abstract

Citation Formats

Secure fastener assembly patent, January 2016

Damper device patent-application, January 2002

Floating Replaceable Anchor Nut assembly patent, April 1973

Nut locking apparatus patent, November 1995

Fastener lockout device patent-application, August 2004

Quick-release fastener system patent, July 2001

Locking system with an identification mark for threaded fasteners patent, November 1995

Bidirectional ramped disposable torque limiting device patent-application, February 2017

Tamper resistant valve stem cap patent, May 2000

Wheel locking assembly patent, August 2007

Pin and grommet patent, March 1993

Structure for converting standard drive fastener to security fastener patent, August 1998

Tamper proof fastener patent-application, April 2007

Secure fastener assembly
patent, January 2016

Damper device
patent-application, January 2002

Floating Replaceable Anchor Nut assembly
patent, April 1973

Nut locking apparatus
patent, November 1995

Fastener lockout device
patent-application, August 2004

Quick-release fastener system
patent, July 2001

Locking system with an identification mark for threaded fasteners
patent, November 1995

Bidirectional ramped disposable torque limiting device
patent-application, February 2017

Tamper resistant valve stem cap
patent, May 2000

Wheel locking assembly
patent, August 2007

Pin and grommet
patent, March 1993

Structure for converting standard drive fastener to security fastener
patent, August 1998

Tamper proof fastener
patent-application, April 2007