US 5,842,639 A · Paint sprayer screen

Abstract

A filter for a liquid spraying device such as an airless paint sprayer. The filter separates unwanted foreign material and clumps from a liquid before the liquid is pumped into a liquid spraying device. The filter is removably mounted on a hose of a liquid spraying device to filter the liquid as it is extracted into the hose. The filter has a frusto-conical surface member having a hollow cavity, a top surface, and an open base terminating at an annular wall around the perimeter of the base. A plurality of holes surround the surface of the frusto-conical surface member wherein the holes are formed at an angle of about 90.degree. to a plane spanning the base. Removably attached to the annular wall is a circular disk having a planar surface terminating at a ring such that the ring projects about perpendicularly from the planar surface. The circular disk has a coupling projecting about perpendicularly around a center point of the planar surface.

Claims20

Dependent claims

A filter for a paint sprayer comprising:

(a) a frusto-conical surface member having a hollow cavity, a top surface, and an open base terminating at an annular wall around the perimeter of the base;
a plurality of holes around the surface of the frusto-conical surface member, which holes are formed through the frusto-conical surface member at an angle of about 90.degree. to a plane spanning the base;
(b) a circular disk having a planar surface terminating at a ring, which ring projects about perpendicularly from the planar surface;
said circular disk having a coupling projecting about perpendicularly around a center point of the planar surface;
said ring being removably attached around the annular wall.

2 more elements

A paint sprayer comprising a paint spray device having a paint supply hose and a filter attached to the hose, which filter comprises:

(a) a frusto-conical surface member having a hollow cavity, a top surface, and an open base terminating at an annular wall around the perimeter of the base;
a plurality of holes around the surface of the frusto-conical surface member, which holes are formed through the frusto-conical surface member at an angle of about 90.degree. to a plane spanning the base;
(b) a circular disk having a planar surface terminating at a ring, which ring projects about perpendicularly from the planar surface;
said circular disk having a coupling projecting about perpendicularly around a center point of the planar surface;
said ring being removably attached around the annular wall.

2 more elements

A method for spraying a liquid comprising:

i) attaching a filter to a liquid supply hose;
ii) sequentially passing a liquid through the filter and the liquid supply hose to a spraying device;
and
iii) spraying the liquid with the spraying device;
which filter comprises:
(a) a frusto-conical surface member having a hollow cavity, a top surface, and an open base terminating at an annular wall around the perimeter of the base;
a plurality of holes around the surface of the frusto-conical surface member, which holes are formed through the frusto-conical surface member at an angle of about 90.degree. to a plane spanning the base;
(b) a circular disk having a planar surface terminating at a ring, which ring projects about perpendicularly from the planar surface;
said circular disk having a coupling projecting about perpendicularly around a center point of the planar surface;
said ring being removably attached around the annular wall.

7 more elements

Dependencies are inferred from the claim text.

Paint sprayer screen

Life of this patent

Paint sprayer screen

Life of this patent

Abstract

Claims20