Abstract: A modular adhesive insert for a construction anchor allows for controlled dispersion of adhesive in a pre-formed bore, and multiple insert screens to be attached to each other to create many sizes of screens. The insert comprises an end cap and also includes an abutment structure. The insert includes a housing with a first end and a second end, the first end including a first set of connection structures, the second end including a second set of connection structures, the housing including a plurality of shutters between the first end and the second end, each of the shutters adapted to vary a size of an opening associated with each said shutter.

Abstract: 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, and a pilot thread. The pilot thread may have first second and third revolutions with different heights and widths which are designed to remove various portions of material from a pre-drilled hole into which the fastener is to be inserted.

Abstract: 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 non-normal 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.

Abstract: 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 non-normal 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.

Abstract: A method for installing fastener in a base material. The fastener has a shank having a first end and a second end defining a length, a head provided at the second end, and a thread provided on the shank which includes a leading edge and a trailing edge adapted remove portions of the base material when inserted into the base material. The method includes forming a hole having a diameter which is a nominal shank diameter of the fastener to be installed in the base material. The hole is then filled with an adhesive having a viscosity of 350 cP or less. Finally, the fastener is rotated into the hole such that the adhesive is forced into portions of the base material adjacent to the shank and thread when the thread is fully inserted into the hole.

Abstract: 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 non-normal 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.

Abstract: A fastener includes a shank having a first end and a second end. The fastener also includes a thread provided on the shank, the thread including a first region having a first thread angle and a second region with a second thread angle, at least a portion of the thread having said first thread angle. The fastener also includes an arcuate detent region in the shank between respective turns of the thread.

Abstract: A fastener includes a shank having a first end and a second end. The fastener also includes a thread provided on the shank, the thread including a first region having a first thread angle and a second region with a second thread angle, at least a portion of the thread having said first thread angle. The fastener also includes an arcuate detent region in the shank between respective turns of the thread.

Abstract: A method of creating a threaded fastener which includes a shank having a first, threaded portion and a hardened thread portion. The shank includes a thread extending outwardly from a shank body over a first length of the shank. A second portion of the shank includes a groove positioned coincident with the thread and including a turn ratio equal to a turn ratio of the thread. The shank comprises corrosive resistant stainless steel. A coil of hardened steel engages the groove to fill the groove along the second portion.

Abstract: A method of creating a threaded fastener which includes a shank having a first, threaded portion and a hardened thread portion. The shank includes a thread extending outwardly from a shank body over a first length of the shank. A second portion of the shank includes a groove positioned coincident with the thread and including a turn ratio equal to a turn ratio of the thread. The shank comprises corrosive resistant stainless steel. A coil of hardened steel engages the groove to fill the groove along the second portion.

Abstract: A threaded fastener includes a shank having a first, threaded portion and a hardened thread portion. The shank includes a thread extending outwardly from a shank body over a first length of the shank. A second portion of the shank includes a groove positioned coincident with the thread and including a turn ratio equal to a turn ratio of the thread. The shank comprises corrosive resistant stainless steel. A coil of hardened steel engages the groove to fill the groove along the second portion.

Abstract: A threaded fastener includes a shank having a first, threaded portion and a hardened thread portion. The shank includes a thread extending outwardly from a shank body over a first length of the shank. A second portion of the shank includes a groove positioned coincident with the thread and including a turn ratio equal to a turn ratio of the thread. The shank comprises corrosive resistant stainless steel. A coil of hardened steel engages the groove to fill the groove along the second portion.

Abstract: An adhesive insert includes a first end and a second end, and comprises a threaded portion at the first end, the threaded portion having a circular cross-section. A securing portion is provided at the second end, the securing portion including an anti-rotation structure formed therein which resists rotation of the insert under cyclic loading by the building element. The anti-rotation structure may be a triobular cross-section formed in the securing portion. Other anti-rotation structures are provided.

Abstract: An adhesive insert includes a first end and a second end, and comprises a threaded portion at the first end, the threaded portion having a circular cross-section. A securing portion is provided at the second end, the securing portion including an anti-rotation structure formed therein which resists rotation of the insert under cyclic loading by the building element. The anti-rotation structure may be a triobular cross-section formed in the securing portion. Other anti-rotation structures are provided.

Abstract: An anchor is provided that is inserted into a bore in a cementious member, the bore having a side wall. The anchor is made up of an elongated stem having a longitudinal axis and a leading end and a trailing end. A tensioning head is disposed at the leading end of the stem and connected to the leading end of the stem in such a manner that when the stem is moved along its longitudinal axis the tensioning head moves with the stem. The tensioning head also has a leading end, a trailing end and an outer surface, the leading end of the tensioning head being wider than the trailing end of the tensioning head and the outer surface of the tensioning head flaring generally outwardly from the trailing end to the leading end of the tensioning head.