Perforated hexagon-hole tube support for synthetic screen separator
AssigneeVelcon Filters, Inc.
InventorsDavid Stanley Hawkins, Carl Robert Perkins, Gregory Scott Sprenger
Life of this patent
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Abstract
A separator cartridge includes a support tube formed of a perforated strip of metal configured to normally have a first diameter and a spaced array of hexagonal apertures formed therein and a substantially cylindrical screen member having a diameter less than the first diameter of the support tube, wherein a diameter of the support tube is decreased from the first diameter to a diameter less than the diameter of the screen member to be received in the screen member, and wherein the support tube causes the screen member to be maintained in a substantially taut manner.
Claims16
A separator cartridge comprising:
- a support tube formed of a perforated strip of metal configured to normally have a first diameter and a spaced array of hexagonal apertures formed therein;
- and
- a substantially cylindrical screen member having a diameter less than the first diameter of the support tube, the support tube received in the screen member, wherein a diameter of the support tube is decreased from the first diameter to a diameter less than the diameter of the screen member, and
- wherein the hexagonal apertures of the support tube are arranged to provide an open area of at least 65% of a total surface area of the support tube while still having a sufficient spring force to cause the screen member to be maintained in a substantially taut manner by springing outward against the screen member.
A separator cartridge comprising:
- a support tube formed of a perforated strip of metal configured to normally have a first diameter and a spaced array of regular hexagonal apertures formed therein;
- and
- a substantially cylindrical screen member having a diameter less than the first diameter of the support tube, the support tube received in the screen member, wherein a diameter of the support tube is decreased from the first diameter to a diameter less than the diameter of the screen member,
- wherein the hexagonal apertures of the support tube are arranged to provide an open area of at least 65% of a total surface area of the support tube while still having a sufficient spring force to cause the screen member to be maintained in a substantially taut manner by springing outward against the screen member, and
- wherein the support tube includes an overlay seam allowing a diameter of the support tube to be constricted to less than the first diameter.
A method of forming a separator cartridge, the method comprising the steps of:
- providing a support tube formed of a perforated strip of metal configured to normally have a first diameter and a spaced array of hexagonal apertures formed therein;
- providing a cylindrical screen member having a diameter less than the first diameter of the support tube;
- applying a force to the support tube to constrict a diameter from the first diameter to a constricted diameter that is smaller than the first diameter;
- disposing the cylinder screen member around at least a portion of the support tube to extend over the apertures of the support tube while the diameter of the support tube is constricted from the first diameter;
- and
- releasing the support tube to increase the constricted diameter to approaching but less than the first diameter to maintain the screen member taut, wherein the hexagonal apertures of the support tube are arranged to provide an open area of at least 65% of a total surface area of the support tube while still having a sufficient spring force to cause the screen member to be maintained in a substantially taut manner by springing outward against the screen member.
Dependencies are inferred from the claim text.