Twisted Patents (Class 411/425)
  • Patent number: 8920093
    Abstract: A thread-furrowing screw comprises a shaft portion made of solid material and a thread portion attached to the shaft portion, which thread portion is wound from a profiled metal strip.
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: December 30, 2014
    Assignee: Ludwig Hettich & Co.
    Inventor: Ulrich Hettich
  • Patent number: 8757859
    Abstract: A light bar fixing device comprises a light bar defining a through-hole and a heat dissipation mechanism defining a threaded hole corresponding to the through-hole. The light bar fixing device further comprises a helical spring having a pitch identical to that of the threaded hole. A columnar body of the helical spring is adapted to be threaded into the threaded hole, and an outer diameter of a stop end of the helical spring is greater than that of the columnar body. By threading the helical spring into the threaded hole, the light bar can be securely connected to the heat dissipation mechanism with a clearance therebetween being reduced. Also, the light bar can dissipate heat evenly via the heat dissipation mechanism to allow a uniform temperature distribution in the light bar, thus resulting in a desirable light emitting effect and a prolonged service life of the light bar.
    Type: Grant
    Filed: September 17, 2011
    Date of Patent: June 24, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Tian Zhang
  • Patent number: 7896309
    Abstract: The alignment tool of the present invention includes a cylindrical coil extending outward from one side of a steel base plate. The opposite side of the base plate includes a raised center lip portion for alignment and placement of a magnet thereon. The magnet includes a partially magnetic steel form attachment surface. The alignment tool cylindrical coil is screwed into a foam panel leaving the partially magnetic side exposed and substantially flush with a foam panel side. One or more alignment tools may be secured to a foam panel depending on the dimensions of the panel. The foam panels are then placed in a concrete form with the alignment tool partially magnetic side attaching to a concrete form steel member. The alignment tool keeps the foam panel secured and stable within the form while the form is being filled with concrete.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: March 1, 2011
    Inventor: Nicholas DiGiammo
  • Publication number: 20110008130
    Abstract: A concentric threaded fastener comprising a body with a starting shape, an ending shape, and at least one continuous surface formed by layers between the starting shape and the ending shape, where the layers are concentric so that each successive layer from the starting shape to the ending shape has local clearance between the layer and a larger adjacent layer and so that each layer forms a plug when it is aligned in an unrotated position, and where each layer is successively rotated about at least one axis to form the continuous surface. A concentric threaded system comprising a concentric threaded fastener and a receiving component comprising an opening with mating continuous surface dimensioned to accept the continuous surface of the concentric threaded fastener so that the mating continuous surface and the continuous surface of the concentric threaded fastener make complete surface contact when the concentric threaded fastener is at a terminal position within the receiving component.
    Type: Application
    Filed: July 12, 2010
    Publication date: January 13, 2011
    Inventor: Dale Van Cor
  • Publication number: 20090272066
    Abstract: A fastening assembly (11) for fastening a mounting part (6) to a constructional component (7) and including a fastening element (12) having a shaft (14) extending along a longitudinal axis (13), a holding portion (15) projecting radially at a first end of the shaft, and an anchoring portion (16) provided at the opposite, second, free end of the shaft for anchoring in the constructional component (7), and a shear force transmission element (21) provided on the fastening element (12) between the holding portion (15) and the anchoring portion (16) in the set state of the fastening assembly in the through-opening (8) of the mounting part (6), with the shear force transmission element (21) having, in a mounted state thereof, an axial length (L) that is smaller than its initial axial length and that is reduced from its initial axial length (H) by the holding portion (15) of the fastening element (12).
    Type: Application
    Filed: April 28, 2009
    Publication date: November 5, 2009
    Inventors: Falk Rosenkranz, Holger Basche, Bernhard Sander, Marc Schaeffer
  • Patent number: 7214021
    Abstract: A helical grooved pin for insertion into a hole in a hard host material includes a formed portion of helical lands and grooves. Pin material from the grooves is displaced to define lands at an expanded diameter relative to the pin stock material. The forming process employs a rolling die configured to produce substantially uniform cylindrical land surfaces. The helical lands have a width that is at least five times the height of the land. The expanded diameter of the formed portion of the pin is no more than 5% larger than the diameter of the pin stock material. These proportions provide a uniform, durable and reliable retaining surface to the pin which is particularly useful in applications where the host material is harder than the pin.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: May 8, 2007
    Assignee: Spirol International Corporation
    Inventor: Richard C. Caponi
  • Patent number: 6305479
    Abstract: A helical wedge tie, anywhere from 2½ inches to 4 inches in length, (which is approximately the width of a standard brick), can be utilized to wedgingly engage the mortar in a wall after a helical main tie has been passed all the way through the mortar and secured in the concrete. The wedge tie may have the same helical pitch as that of the main tie, or it may be a pitch somewhat tighter or shorter to not only fill the space between the host tie and the mortar, but wedgingly engage the same. The auxiliary wedge pin may be pointed at both ends, pointed at one end, or even blunt at both ends. Successful fixes have been made where one end is sheared, and has a relatively chisel-like end. The method of the invention is directed to the reinforcing of a tie in a wall reinforcing environment, where the outer portion of the tie passes through a softer material, and a subsequent reinforcement of the tie portion in the soft material becomes desirable.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: October 23, 2001
    Assignee: Helifix Limited
    Inventors: Robert Ian Paterson, Patrick John Sweeney
  • Patent number: 6155352
    Abstract: A helical wedge tie, anywhere from 2 1/2 inches to 4 inches in length, (which is approximately the width of a standard brick), can be utilized to wedgingly engage the mortar in a wall after a helical main tie has been passed all the way through the mortar and secured in the concrete. The wedge tie may have the same helical pitch as that of the main tie, or it may be a pitch somewhat tighter or shorter to not only fill the space between the host tie and the mortar, but wedgingly engage the same. The auxiliary wedge pin may be pointed at both ends, pointed at one end, or even blunt at both ends. Successful fixes have been made where one end is sheared, and has a relatively chisel-like end. The method of the invention is directed to the reinforcing of a tie in a wall reinforcing environment, where the outer portion of the tie passes through a softer material, and a subsequent reinforcement of the tie portion in the soft material becomes desirable.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: December 5, 2000
    Assignee: Helifix Limited
    Inventors: Robert Ian Paterson, Patrick John Sweeney
  • Patent number: 6039125
    Abstract: A helical wedge tie, anywhere from 21/2 inches to 4 inches in length, (which is approximately the width of a standard brick), can be utilized to wedgingly engage the mortar in a wall after a helical main tie has been passed all the way through the mortar and secured in the concrete. The wedge tie may have the same helical pitch as that of the main tie, or it may be a pitch somewhat tighter or shorter to not only fill the space between the host tie and the mortar, but wedgingly engage the same. The auxiliary wedge pin may be pointed at both ends, pointed at one end, or even blunt at both ends. Successful fixes have been made where one end is sheared, and has a relatively chisel-like end. The method of the invention is directed to the reinforcing of a tie in a wall reinforcing environment, where the outer portion of the tie passes through a softer material, and a subsequent reinforcement of the tie portion in the soft material becomes desirable.
    Type: Grant
    Filed: June 27, 1998
    Date of Patent: March 21, 2000
    Assignee: Helifix Limited
    Inventors: Robert Ian Paterson, Patrick John Sweeney
  • Patent number: 5662683
    Abstract: The invention relates to a tissue anchor which is an open helix of biocompatible material having a slope of from 0.5 to 10 turns per centimeter, a length from 3 to 75 millimeters, a diameter of from 1.5 to 11 millimeters, and an aspect ratio of from about 3 to about 5 to 1. The anchor can have a head which is capable of securing or clamping tissue together, such as holding a suture to secure a ligament or tendon to bone. The anchor can also have a head which causes an inward, compressive loading for use in fastening bone to bone, orthopedic plates to bone, or cartilage to bone.
    Type: Grant
    Filed: August 22, 1995
    Date of Patent: September 2, 1997
    Assignee: Ortho Helix Limited
    Inventor: David B. Kay
  • Patent number: 5639195
    Abstract: Wall panels are fastened to walls or to one another with pairs of identical elically-wound fastener rods which engage each other by turning. Spacer tubes are provided to maintain the desired spacing between panels, or between panels and walls, and to align the helically-wound sections of the fasteners before engaging. Guide prongs may also be used to assist in the alignment of the fasteners with each other before engaging.
    Type: Grant
    Filed: March 1, 1996
    Date of Patent: June 17, 1997
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: William Newell Brabston, Philip G. Malone, Roger H. Jones, Jr.
  • Patent number: 5626613
    Abstract: A corkscrew suture anchor has a spiral-shaped body having a hollow central core, a distal end, and a proximal end. The distal end of the spiral body terminates in a sharp point, and the proximal end of the spiral-shaped body has an eye for receiving suture. The suture anchor expands resiliently during installation, and contracts to securely grip the bone once the installation force is relaxed. A driver for the suture anchor is provided, the driver including a shaft having a central axis, a length, a distal end, and a proximal end. The shaft is provided at its distal end with a stud aligned with the central axis of the shaft, for insertion into the hollow, central axis of the spiral-shaped body of the suture anchor, and a notch disposed adjacent to the stud for driveably engaging the proximal end of the spiral-shaped body.
    Type: Grant
    Filed: May 4, 1995
    Date of Patent: May 6, 1997
    Assignee: Arthrex, Inc.
    Inventor: Reinhold Schmieding
  • Patent number: 5299897
    Abstract: A one-piece fastener adapted to be driven into a drilled hole in masonry material. The fastener includes features which define a helical flight causing the fastener to rotate as it is driven in place. The fastener shank is configured to cause abrasion of the pre-drilled hole and is dimensioned such that a radially compressive force acts on the wall of the masonry hole to provide for enhanced retention of the fastener after it is set in place. A radially enlarged shoulder is provided on the fastener adjacent its driving end to tightly engage the entrance end of the masonry hole to provide firm radial support for the driving head and structure which it supports.
    Type: Grant
    Filed: June 9, 1993
    Date of Patent: April 5, 1994
    Assignee: Great Lakes Tool and Machine
    Inventor: Herman Marquardt
  • Patent number: 4815909
    Abstract: A wood screw has a resilient shaft carrying a spiral thread of nominal pitch from the tip. The thread is interrupted at a plurality of intervals and the shaft is torsionally resilient. When the screw fastener is driven, the shaft twists and contracts so that the thread in the mating material has a pitch which is less than the nominal pitch. The interrupted thread may consist of a plurality of resilient lobes.
    Type: Grant
    Filed: November 19, 1986
    Date of Patent: March 28, 1989
    Inventor: Leon Simons
  • Patent number: 4307979
    Abstract: A mine bolt formed of continuous fiber reinforced pultruded rod-like reinforcing element is disclosed. This rod-like element includes at least one helical groove and/or protrusion along its length, with the continuous reinforcing fibers in the protrusions or surrounding grooves generally conforming to the helical pattern of the outer surface of the rod. The bolts formed by the instant invention also have utility in reinforcing such structures as mine roofs or concrete. The bolt of the instant invention comprises the above helically grooved rod fitted with an end cap that fits the helical turns of the grooved rod. The end cap may also serve as the mine roof plate.
    Type: Grant
    Filed: April 28, 1980
    Date of Patent: December 29, 1981
    Assignee: PPG Industries, Inc.
    Inventor: Charles W. Killmeyer