The invention is a continuous gutter guard manufacturing process and a one-piece gutter guard article made therefrom which crimps a wire mesh filtration screen within the recesses of upper and lower supports of the one-piece gutter guard article. The wire mesh filtration screen has no underlying support, which is characteristic of a one-piece gutter guard construction. The upper and lower edges of the mesh filtration screen remain in a planar, non-embossed state, such that any ridges or patterns embossed into the screen do not follow into the portion of the screen that is crimped within the upper and lower supports of the gutter guard. This construction prevents the formation of debris pockets which can significantly reduce the performance of a one-piece gutter guard.

Embodiments of the present invention provide a hollow cylindrical filter for removing efficiently foreign substances from fluids. This is performed by forming complicated passages including an axial direction and a radial direction in the filter. The hollow cylindrical filter is formed by winding a metal wire rod in a spiral and multilayered manner. The metal wire rod includes a recess formed throughout the entire length in a longitudinal direction, or recesses repeated along said longitudinal direction. Some wire rod layers extend in an axial direction of the hollow cylindrical filter while the adjacent wire rod layers extend in an intersecting direction, thereby forming a plurality of communication paths for communicating between the overlapping wire rod layers. Additionally, a space is formed between the recess of one wire rod layer and another adjacent wire rod layer, allowing the plurality of communication paths to communicate with each other.

Embodiments of the present invention provide a hollow cylindrical filter for removing efficiently foreign substances from fluids. This is performed by forming complicated passages including an axial direction and a radial direction in the filter. The hollow cylindrical filter is formed by winding a metal wire rod in a spiral and multilayered manner. The metal wire rod includes a recess formed throughout the entire length in a longitudinal direction, or recesses repeated along said longitudinal direction. Some wire rod layers extend in an axial direction of the hollow cylindrical filter while the adjacent wire rod layers extend in an intersecting direction, thereby forming a plurality of communication paths for communicating between the overlapping wire rod layers. Additionally, a space is formed between the recess of one wire rod layer and another adjacent wire rod layer, allowing the plurality of communication paths to communicate with each other.

A method of forming a forming mold screen including providing a die plate defining a plate contour and a die center point. A screen is disposed on the die plate. A retainer plate secured to the die plate defines an opening having a retainer center point substantially aligned with the die center point. The screen is disposed between the die plate and the retainer plate and substantially defines a plane. A nested punch unit inserted into the opening includes an inner punch and an outer punch disposed around the inner punch. The inner punch and the outer punch are aligned along an axis substantially aligned with the retainer center point. The screen pressed with the nested punch unit includes pressing the screen with the inner punch followed by pressing the screen with the outer punch.

Embodiments of the present invention provide a hollow cylindrical filter for removing efficiently foreign substances from fluids. This is performed by forming complicated passages including an axial direction and a radial direction in the filter. The hollow cylindrical filter is formed by winding a metal wire rod in a spiral and multilayered manner. The metal wire rod includes a recess formed throughout the entire length in a longitudinal direction, or recesses repeated along said longitudinal direction. Some wire rod layers extend in an axial direction of the hollow cylindrical filter while the adjacent wire rod layers extend in an intersecting direction, thereby forming a plurality of communication paths for communicating between the overlapping wire rod layers. Additionally, a space is formed between the recess of one wire rod layer and another adjacent wire rod layer, allowing the plurality of communication paths to communicate with each other.

Embodiments of the present invention provide a hollow cylindrical filter for removing efficiently foreign substances from fluids. This is performed by forming complicated passages including an axial direction and a radial direction in the filter. The hollow cylindrical filter is formed by winding a metal wire rod in a spiral and multilayered manner. The metal wire rod includes a recess formed throughout the entire length in a longitudinal direction, or recesses repeated along said longitudinal direction. Some wire rod layers extend in an axial direction of the hollow cylindrical filter while the adjacent wire rod layers extend in an intersecting direction, thereby forming a plurality of communication paths for communicating between the overlapping wire rod layers. Additionally, a space is formed between the recess of one wire rod layer and another adjacent wire rod layer, allowing the plurality of communication paths to communicate with each other.

A method and apparatus for providing rib wires of a wire wrap screen on a pipe comprises one or more straps adapted to receive a plurality of rib wires and to engage the pipe, at least one of the straps being adapted to align at least a portion of the rib wires generally parallel with the longitudinal axis of the pipe and generally equidistantly spaced apart over the circumference of the pipe. The pipe with rib wires, once secured with the straps, can then be introduced into a wire wrap machine to form the wire wrap screen over the rib wires.

A method and apparatus for providing rib wires of a wire wrap screen on a pipe comprises one or more straps adapted to receive a plurality of rib wires and to engage the pipe, at least one of the straps being adapted to align at least a portion of the rib wires generally parallel with the longitudinal axis of the pipe and generally equidistantly spaced apart over the circumference of the pipe. The pipe with rib wires, once secured with the straps, can then be introduced into a wire wrap machine to form the wire wrap screen over the rib wires.

Embodiments of the present invention provide a hollow cylindrical filter for removing efficiently foreign substances from fluids. This is performed by forming complicated passages including an axial direction and a radial direction in the filter. The hollow cylindrical filter is formed by winding a metal wire rod in a spiral and multilayered manner. The metal wire rod includes a recess formed throughout the entire length in a longitudinal direction, or recesses repeated along said longitudinal direction. Some wire rod layers extend in an axial direction of the hollow cylindrical filter while the adjacent wire rod layers extend in an intersecting direction, thereby forming a plurality of communication paths for communicating between the overlapping wire rod layers. Additionally, a space is formed between the recess of one wire rod layer and another adjacent wire rod layer, allowing the plurality of communication paths to communicate with each other.

Embodiments of the present invention provide a hollow cylindrical filter for removing efficiently foreign substances from fluids. This is performed by forming complicated passages including an axial direction and a radial direction in the filter. The hollow cylindrical filter is formed by winding a metal wire rod in a spiral and multilayered manner. The metal wire rod includes a recess formed throughout the entire length in a longitudinal direction, or recesses repeated along said longitudinal direction. Some wire rod layers extend in an axial direction of the hollow cylindrical filter while the adjacent wire rod layers extend in an intersecting direction, thereby forming a plurality of communication paths for communicating between the overlapping wire rod layers. Additionally, a space is formed between the recess of one wire rod layer and another adjacent wire rod layer, allowing the plurality of communication paths to communicate with each other.