A press-in fastener incorporates a compound wave pattern into the shank knurl. The knurl is generally aligned vertically but instead of a straight uniform knurl pattern, the rows of knurls have an undulating curved shape that alternates from a narrow to a wider cross-section as they transverse axially along the length of the pin shank. The knurls are arranged in straight or serpentine longitudinal rows equally spaced around a circumference of the shank. At least one of the rows has a wavy cross-sectional profile in a radial plane containing the longitudinal axis wherein said profile consists of a series of contiguous alternating crests and valleys. The compound wavy configuration of the knurls yields a number of benefits without adversely affecting the manufacturing process. The knurl configuration also reduces the installation force and disruption of the host material while maintaining a better lock on the host material.

A press-in fastener incorporates a compound wave pattern into the shank knurl. The knurl is generally aligned vertically but instead of a straight uniform knurl pattern, the rows of knurls have an undulating curved shape that alternates from a narrow to a wider cross-section as they transverse axially along the length of the pin shank. The knurls are arranged in straight or serpentine longitudinal rows equally spaced around a circumference of the shank. At least one of the rows has a wavy cross-sectional profile in a radial plane containing the longitudinal axis wherein said profile consists of a series of contiguous alternating crests and valleys. The compound wavy configuration of the knurls yields a number of benefits without adversely affecting the manufacturing process. The knurl configuration also reduces the installation force and disruption of the host material while maintaining a better lock on the host material.

A two-part mechanical fastener comprising an elongated body with a bore slidably carrying a mandrel adapted to interferingly engage the body is described. The fastener body has one or more protuberances on its exterior surface. In an aspect, the protuberances form a thread. The fastener is adapted to form an opening in, and penetrate, a stack of two or more workpieces. To secure the workpieces in the workpiece stack and form a robust joint, the fastener body is deformed by the mandrel, expanding the body, so that a body end engages a surface of the workpiece stack and the one or more protuberances are brought into engagement with the walls of the opening. Methods of using such a fastener to secure non-ferrous or polymer-based sheet-like workpieces to one another are disclosed.

A two-part mechanical fastener comprising an elongated body with a bore slidably carrying a mandrel adapted to interferingly engage the body is described. The fastener body has one or more protuberances on its exterior surface. In an aspect, the protuberances form a thread. The fastener is adapted to form an opening in, and penetrate, a stack of two or more workpieces. To secure the workpieces in the workpiece stack and form a robust joint, the fastener body is deformed by the mandrel, expanding the body, so that a body end engages a surface of the workpiece stack and the one or more protuberances are brought into engagement with the walls of the opening. Methods of using such a fastener to secure non-ferrous or polymer-based sheet-like workpieces to one another are disclosed.

An anchorable clip comprises a first main body portion and a second main body portion together reconfigurable between an initial configuration and an in-use configuration. The first main body portion and the second main body portion together define, in the in-use configuration: an insertable shank; a base; and a clip member. Displaceable projections project outwardly from the first main body portion and the second main body portion for engaging the article adjacent the receiving aperture to thereby preclude the anchorable clip from being removed from the receiving aperture. The first main body portion comprises a first shank portion of the insertable shank, a first base portion of the base, and a first clip portion of the clip member, and the second main body portion comprises a second shank portion of the insertable shank, a second base portion of the base, and a second clip portion of the clip member.

An anchorable clip comprises a first main body portion and a second main body portion together reconfigurable between an initial configuration and an in-use configuration. The first main body portion and the second main body portion together define, in the in-use configuration: an insertable shank; a base; and a clip member. Displaceable projections project outwardly from the first main body portion and the second main body portion for engaging the article adjacent the receiving aperture to thereby preclude the anchorable clip from being removed from the receiving aperture. The first main body portion comprises a first shank portion of the insertable shank, a first base portion of the base, and a first clip portion of the clip member, and the second main body portion comprises a second shank portion of the insertable shank, a second base portion of the base, and a second clip portion of the clip member.

A method of anchoring a lightweight building element having a first building layer and an interlining layer distally of the first building layer, and possibly a second building layer distally of the interlining layer. For anchoring, the distal end of a connector element is inserted into a mounting hole in the lightweight building element, and also a sleeve including a thermoplastic material is inserted into the mounting hole, the sleeve enclosing the connector element. Then, a distally facing liquefaction face of the sleeve is caused to be in contact with a proximally facing support face of the connector element. Energy impinges to liquefy at least a flow portion of the thermoplastic material of the sleeve, and the liquefaction face is pressed against the support face to cause at least a fraction of the flow portion to flow radially outward. After the flow portion has re-solidified, it anchors the connector element in the receiving object.

A field-assembly dowel basket for concrete construction configured for in-the-field assembly from a small number of component parts, including dowels, dowel sleeves that loosely house the dowels, W shaped frame wires that support the dowel sleeves, straight shipping wires that connect dowel basket sections together, and T connectors that join the frame sections to the shipping wires. Various embodiments of the field-assembly dowel basket may use different types of dowel sleeves, such as open-channel sleeves, closed-channel sleeves, and sealed-channel sleeves in which tape or another suitable cover is used to seal open-channel sleeves. The dowel sleeves may house different types of dowels, such as rectangular plate dowels and round rod dowels.

An anchor for removably attaching an accessory to a frame member having an outer surface and a slot defined in the outer surface. The anchor comprises a body that has a surface that is generally complementary in shape to a portion of the outer surface of the frame member that surrounds the slot, a shank that from the surface, the shank being sized to be received in the slot and defining an aperture extending from a free end of the shank toward the surface. The aperture is adapted to receive a fastener. The anchor also includes at least one projection extending from a side of the shank. A vehicle having the frame member and the anchor is provided. A method of attaching a component to a frame member using the anchor is provided.

An anchor for removably attaching an accessory to a frame member having an outer surface and a slot defined in the outer surface. The anchor comprises a body that has a surface that is generally complementary in shape to a portion of the outer surface of the frame member that surrounds the slot, a shank that from the surface, the shank being sized to be received in the slot and defining an aperture extending from a free end of the shank toward the surface. The aperture is adapted to receive a fastener. The anchor also includes at least one projection extending from a side of the shank. A vehicle having the frame member and the anchor is provided. A method of attaching a component to a frame member using the anchor is provided.