Abstract: A bone plate includes (a) a body having a first surface which, in an operative configuration, faces away from a bone on which the plate is to be mounted and a second surface, which in the operative configuration, faces the bone, the body including a first section extending along a first longitudinal axis and a second section extending along a second longitudinal axis angled with respect to the first longitudinal axis; (b) a first hole extending through the body from the first surface to the second surface and defining a first hole axis, the first hole being structured to lockingly engage a head of a first bone anchor inserted therein such that a shaft of the first bone anchor extends along the first hole axis; and (c) a second hole extending through the body and spaced apart from the first hole. The second hole defines a second hole axis and is structured to lockingly engage a head of a second bone anchor inserted therein such that a shaft of the second bone anchor extends along the second hole axis.

Abstract: A firearm pin that includes a head that extends from a shoulder to a crown, a face formed between the shoulder and the crown, wherein the face is formed at an angle of between approximately 1° and 89° relative to a longitudinal axis of the pivot pin, and a shank, wherein the shank includes an elongate, cylindrical shank portion that extends from a terminal surface to the shoulder.

Abstract: A turn-button for a lockset includes a head portion and a shaft extending from the head portion. The shaft has a leading helical end portion.

Abstract: A multi-shank nail has a first shank, a second shank and a washer; wherein both of the first shank and the second shank have an enlarged head at their top ends and a point at their lower ends. The first shank has a flat contact surface along its longitudinal length at an upper portion, and the second shank has a shape of a longitudinally cut nail such that the second shank is capable of corresponding to the contact surface on the first shank. The first shank has an inclined face and an extended portion in sequence below the contact surface. At least one of the first shank or second shank comprises a plurality of notches opposite the contact surface, and the notches make the first shank or second shank easier to bend.

Abstract: The present invention utilises impact-driven fastener (1) having a twisted body having: a common axial core (2) a protruding helix (3) and a trailing elongate lost-end driving shank: (4) of reduced radial diameter. The fastener incorporates two or three loosely wound loosely wound thread-cutting blade-like helical projections (5) extending radially from a solid axial core (2). These blade-like projections (5) are inclined upon a sweeping helical angle (8) of less than 42° to the longitudinal axis (9) of the core (2).

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.

Abstract: A protruding head fastener incorporates a slight head taper that gradually increases in diameter as it moves in the opposite direction from the female threaded section formed in a parent material. The fastener head engages the mating non-tapered counterbore located in the parent material, the counterbore being slightly larger than the outside diameter of the tapered head portion of the fastener closest to the threads and slightly smaller than the outside diameter of the outward taper of the fastener at the farthest position away from the threads. As the male fastener engages the female threads, the taper of the head of the male fastener abuts against the non-tapered counterbore of the parent material. An interference condition occurs and the mechanical advantage of the threads rotationally pull the tapered head into the counterbore. The counterbore material then begins to yield and deform slightly to conform to a precise matching taper fit with the head of the male fastener.

Abstract: A push pin construction (10) for attaching at least one sheet of material (200) to a cubicle wall (100) wherein the construction (10) includes an elongated shaft member (20) having a pointed outboard end (22), a blunt inboard end (23) and a helical anchor section 24 formed intermediate the aligned ends (22), (23). In addition, the shaft member (20) is further provided with a flattened flange (25) disposed proximate to the blunt end (23) which are both embedded in a push head member (30) having an outwardly projecting lip (32) disposed on the distal end and an outwardly projecting tab (33) formed on the proximal end of the push head member (30).

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.

Abstract: A roof support pin for insertion into the strata of the roof including an elongate rod having a non-circular cross-section to provide corners, the rod being twisted so that the corners provide longitudinal substantially helical fins for turning into and gripping the roof strata as the rod is inserted into the roof. A roof support plate is provided with an aperture having a cross-section with corners that engage the corners of the rod cross-section for turning the rod into the roof strata as the rod is moved longitudinally relatively through the aperture. The roof support plate grips the roof and precludes relative turning of the plate and roof as the rod is moved longitudinally through the plate aperture and is twisted into the roof strata.