Patents for October

USPTO Fastener Patents as Compiled from: United States Patent and Trademark Office (USPTO)

Concrete Fastener
US Patent 11739783
Published August 29, 2023
Inventor: Joel Houck, Cedar Lake, IN, USA
Assignee: Simpson Strong-Tie Company Inc., Pleasanton, CA, USA
A fastener includes a shank having a first end and a second end defining a length. The fastener includes a
thread provided on the shank, the thread including a first region adjacent to the first end and a second
region between the first region and a head at the second end, the thread includes a leading edge and a
trailing edge, each edge forming an angle with a surface of the shank, the leading edge forming a
nonnormal angle with the surface of the shank and the trailing edge forming an angle about normal to
the surface of the shank. The fastener may include an arcuate detent region in the shank between
respective turns of the thread, the detent region having a length, the length decreasing from the first end
toward the second end between the respective turns. The fastener may include a plurality of flutes
positioned along a length of the shank.

Anti-Loosening Bolt and Nut Assembly Structure
US Patent 11732742
Published August 22, 2023
Inventor: Xiaohua Yang, Taizhou, China
An anti-loosening bolt and nut assembly structure includes a bolt having a bolt head and a bolt shank,
two elastic washers and a nut. The two elastic washers are sleeved on the bolt shank. The two elastic
washers are matched with the bolt head and the nut, respectively. Each elastic washer includes an
annular body having an opening. A bottom of the annular body is provided with anti-slip teeth. A top of
the annular body extends upward to form an anti-loosening ring. An outer inclined surface is formed on
an outer side of the anti-loosening ring. The anti-loosening ring is provided with a plurality of first
unidirectional teeth. The bolt head and the nut each includes a unidirectional anti-loosening device
matched with the first unidirectional teeth.

Straight Shank End Screw for Foreign-Object-Debris (FOD) Reduction
US Patent 11732744
Published August 22, 2023
Inventors: John C. Osborne, Bothell, WA, USA; and Terrence C. Seet, Mill Creek, WA, USA
Assignee: The Boeing Company, Chicago, IL, USA
A fastener which includes a first portion of a shaft which defines threads, and a second portion of the
shaft, which extends from the first portion of the shaft, includes a planar curved surface. A method for
securing a fastener to an e-nut, which includes the step of inserting the fastener positioned within an enut into an opening defined by and which extends through at least two components to be secured
together, wherein: a first portion of the shaft of the fastener defines threads; and a second portion of the
shaft of the fastener, which extends from the first portion of the shaft, defines a curved planar surface.

Nut for Joining Conduits
US Patent 11732824
Published August 22, 2023
Inventors: Alan Zachary Schramm, Glendale, AZ, USA; Bradley James Briars, Palatine, IL, USA; and Robert
E. Riedel, Jr., Fox River Grove, IL, USA
Assignee: Caterpillar Inc., Peoria, IL, USA
A nut for joining conduits includes a body having a generally cylindrical shape and defining a central
opening. A plurality of lugs can extend outwardly from an outer surface of the body and provide one or
more strike surfaces. The central opening can include a threaded portion proximate a first end of the nut
and a tapered portion extending from the threaded portion. The tapered portion defines a frustoconical
surface that expands the central opening beyond the threaded portion. The tapered portion may
terminate at an undercut or flange proximate the second end of the nut.

Blind Fastener
US Patent 11732740
Published August 22, 2023
Inventor: Raymond Disantis, Willoughby Hills, OH, USA
Assignee: Sky Climber Fasteners LLC, Delaware, OH, USA
A reusable blind fastener including a bushing, a nut, a tail, a receiver, an expansion device and a screw.
The expansion device having an exterior surface that is discontinuous and configured for selective elastic
deformation when engaging a portion of the screw.

Screw Structure Reducing Wear and Slip of Washer
US Patent 11725684
Published August 15, 2023
Inventor: Wei-Chih Chen, Taichung, Taiwan
A screw structure includes a screw and a washer mounted on the screw. The bottom face of the screw
head is provided with a plurality of pressing portions. Each of the pressing portions has a top provided
with a first plane and a bottom provided with a second plane having an area smaller than that of the first
plane. Each of the pressing portions is provided with a first inclined face and a first steep arcuate face.
The first inclined face is directed toward a clockwise direction of the screw when the screw is screwed.
The first steep arcuate face is directed toward the external thread. When the screw is screwed into an
article, the pressing portions press the washer, and an outer diameter of the washer is expanded
outward and forms an expansion.

Coating Film Peeling Nut
US Patent 11719273
Published August 8, 2023
Inventors: Yuichi Hiroi, Niwa-Gun, Japan; Akihiro Furukawa, Niwa-Gun, Japan; and Yukinori Fujimoto,
Niwa-Gun, Japan
Assignee: Aoyama Seisakusho Co., Ltd., Niwa-Gun, Japan
The coating film peeling nut of the present invention has a notch 13 formed in an inner surface of a nut
main body 10 on which a female screw 12 is formed, the notch 13 extending in a direction different from
that of a lead angle of the female screw 12. The notch 13 is formed helically, and a winding direction
thereof is the same as that of the female screw 12. A pitch of the notch 13 is 2 to 10 times a pitch of the
female screw 12, and a depth of the notch 13 is 20 to 80% of a thread height of the female screw 12.

Fastener Structure
US Patent 11719271
Published August 8, 2023
Inventor: Ting-Jui Wang, New Taipei, Taiwan
Assignee: Fivetech Technology Inc., New Taipei, Taiwan
A fastener structure includes a head portion, a body portion and an elastic element. The head portion
has a shaft section, a press section and a hold-down section. The body portion has a corresponding press
section, which is movably assembled to the press section. The elastic element has an end pressed against
the press section and another end against the body section, allowing the head portion to move
elastically. The body portion can be engaged with an object, and the holddown section of the head
portion can elastically hold down a workpiece against the object or be elastically removed from the
workpiece, so as to complete the connection and disconnection of at least two objects to and from one
another in a quick and repeatable manner.

Bolt and Fastened Structure
US Patent 11708622
Published July 25, 2023
Inventors: Takahiro Hamada, Kanagawa, Japan; and Daisuke Kobayashi, Kanagawa, Japan
Assignee: Nissan Motor Co., Ltd., Yokohama, Japan
A bolt of the present invention has a composition comprising: 0.50 mass % or greater and 0.65 mass % or
less of carbon (C), 1.5 mass % or greater and 2.5 mass % or less of silicon (Si), 1.0 mass % or greater and
2.0 mass % or less of chromium (Cr), 0.2 mass % or greater and 1.0 mass % or less of manganese (Mn),
1.5 mass % or greater and 5.0 mass % or less of molybdenum (Mo), wherein a total amount of
phosphorous (P) and sulfur (S) as impurities is 0.03 mass % or less, the remaining is iron (Fe), and the bolt
comprises an iron based oxide film with a film thickness of 3 μm or greater and 20 μm or less on the
surface thereof. The bolt has excellent delayed fracture resistance and reliably provides a fastening axial

Thread-Forming or Self-tapping Screw, in Particular for Use in Light Metal US Patent 11703074
Published July 18, 2023
Inventor: Olaf Ambros, Biblis, Germany
Assignee: Baier & Michels GmbH & Co. KG, Ober-Ramstadt, Germany
The invention relates to a screw (1), having a shank (3) which is provided with a thread (2) with at least
one asymmetrical thread turn (4) with a plurality of windings, wherein the thread has an external
diameter (Da), a core diameter (Dk) and a thread pitch (P), wherein the thread turn (4) has thread flanks
(7, 8) with a flank angle (phi), wherein the thread flanks (7, 8) have a load-bearing flank (7) and a counterflank (8) which abut one another directly or indirectly in a thread bottom (9) and at a thread tip (10), and
wherein a flank angle (phiL) of the loadbearing flank (7) is smaller than a flank angle (phiG) of the
counter-flank (8). The flank angle (phiL) of the load-bearing flank is at least 25°, preferably from 25° to
35°, in particular 30°, and the flank angle (phiG) of the counter-flank is at least 40°, preferably from 40° to
60°, in particular 50°, wherein the flank angle (phi) is from at least 65° to at most 95°. Screws of said type
are used, in particular, for direct screw connection in light metal cast components.

Clinch Fastener with a Spiral Shank US Patent 11703076
Published July 18, 2023
Inventors: Qiang Sun, Kunshan, China; Dapeng Duan, Kunshan, China; and Larry Zhang, Kunshan, China
Assignee: Penn Engineering & Manufacturing Corp., Danboro, PA, USA
A press-in fastener has from top to bottom: a head, a clinch feature, and a spiral, knurled shank. The
fastener can hold two parts together by first clinching with a first metal panel, and then being pressed
into a hole in a second, less ductile panel having a uniform interference between the knurled fastener
shank and the hole. The knurled shank has a helix configuration that allows for use in nonductile
materials and eliminates the need for tapered holes and screws for applications that do not require

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The United States Patent and Trademark Office (USPTO or Office) is an agency of the U.S. Department of
Commerce. The role of the USPTO is to grant patents for the protection of inventions and to register
trademarks. It serves the interests of inventors and businesses with respect to their inventions and
corporate products, and service identifications. It also advises and assists the President of the United
States, the Secretary of Commerce, the bureaus and offices of the Department of Commerce and other
agencies of the government in matters involving all domestic and global aspects of “intellectual property.”
Through the preservation, classification and dissemination of patent information, the Office promotes
the industrial and technological progress of the nation and strengthens the economy.

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