Oppositely Threaded Patents (Class 411/932)
  • Patent number: 12077220
    Abstract: A vehicle tailgate adapter assembly includes a vehicle tailgate module, a plurality of first fasteners and an adapter plate. The vehicle tailgate module has a plurality of openings. The adapter plate has a plurality of first openings that correspond to the openings of the tailgate. The first openings and the openings of the tailgate receiving the first fasteners therethrough when the adapter plate is installed to the tailgate. The adapter plate has a plurality of second openings arranged to be offset of the first openings.
    Type: Grant
    Filed: June 25, 2021
    Date of Patent: September 3, 2024
    Assignee: Nissan North America, Inc.
    Inventor: David Smolik
  • Patent number: 11976681
    Abstract: A screw nut includes a through hole defined by the screw nut, an internal thread that projects into the through hole, and a face that surrounds the through hole. At least three barcode patterns are disposed on the face where the at least three barcode patterns have an identical content.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: May 7, 2024
    Assignee: Hilti Aktiengesellschaft
    Inventor: Marc Schaeffer
  • Patent number: 11499583
    Abstract: A fastener assembly having a nut with interior threads extending from a first end to an intermediate end wall, a narrowed diameter aperture extending from the end wall toward a second end. A first screw has a shaft exhibiting a first exterior thread pattern rotationally inter-engaging with the interior threads of the nut when installed through the first end. A recess formed in an end of the shaft exhibiting a further plurality of interior threads matching a direction of the first thread pattern. A second screw has a second exterior thread pattern opposite the first pattern and, upon being installed through the narrowed aperture, rotationally inter-engaging the interior threads of the first screw, with loosening of either screw being prevented by their counter-threaded orientation. A head of the second screw exhibiting an outer annular rim establishing a resistance fit within an entranceway location of the nut.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: November 15, 2022
    Inventor: Earl Allen Size, Jr.
  • Patent number: 5855463
    Abstract: A friction thread locking device assembly consisting of several components, which are so constructed and assemble to resist the rotational effects of vibration forces. The resistance is achieved by the use and placement of opposing threads (right and left hand threads) with differing threads per inch and the containment of a compressed spring force and the use of the clearance between matching female and male threads. This bolt and nut assembly by unique construction, combines and improves the aspects of the standard bolt and nut with a spring lock washer. The outer nut and inner nut matching threads are axially aligned and the two are threaded together in opposite directions to compresses the captured spring(s) or lock washer(s). This preloaded, three part assembly with matching inner female threads on both the outer nut and inner nut are axially aligned with each other is then rotated onto the threaded rod with matching male threads.
    Type: Grant
    Filed: September 15, 1997
    Date of Patent: January 5, 1999
    Inventor: John C. Newby
  • Patent number: 5582496
    Abstract: A jam nut apparatus for fastening to a threaded end of a bolt to secure the bolt where the threaded end has first handed threads includes a locking nut having an internal nut passageway with nut internal threads, the nut passageway having a first passageway end with an inwardly extending locking flange, a bolt end cap having a tubular cap side wall, the cap side wall having an open end with a locking edge and an inner surface with first handed internal threads, for engagingly receiving the threaded end of the bolt, the cap also having an outer surface with second handed external threads opposite to the first handed thread direction, external threads onto which the locking nut threads engagingly fasten, where the locking nut threads are oriented in the second handed direction.
    Type: Grant
    Filed: February 24, 1995
    Date of Patent: December 10, 1996
    Assignee: Top Lock Technology
    Inventors: Salvatore Ambrico, S. Wyatt Fuller, John Suggs, Mark Radosevich
  • Patent number: 5544991
    Abstract: A two-piece locking nut which includes a first nut (22) having an internal thread and a frusto-conical surface (32) at one end of said first nut, a second nut (28) having an internal thread of opposite hand as the thread of said first nut and a frusto-conical surface (36) at an end of said second nut which is complimentary to and positioned adjacent said frusto-conical surface of said first nut to prevent relative movement therebetween, and the second axial end (38) of the first nut opposite the frusto-conical surface (32) is positioned adjacent a workpiece to prevent axial displacement thereof.
    Type: Grant
    Filed: February 13, 1995
    Date of Patent: August 13, 1996
    Assignee: Ford Motor Company
    Inventor: John A. Richardson