US 11,813,632 B2
Filtering fluid dispensing device
Daniel R Schroer, Saginaw, MI (US); Larry Dotson, Midland, MI (US); Michael F Heckert, Lake Orion, MI (US); and Greg T Stewart, Midland, MI (US)
Filed by DOW GLOBAL TECHNOLOGIES LLC, Midland, MI (US)
Filed on Nov. 14, 2018, as Appl. No. 16/190,443.
Claims priority of provisional application 62/585,615, filed on Nov. 14, 2017.
Prior Publication US 2019/0151872 A1, May 23, 2019
Int. Cl. B05B 7/12 (2006.01); B05B 1/30 (2006.01); B05B 7/00 (2006.01); B05B 7/24 (2006.01); B05B 15/40 (2018.01); B05B 12/00 (2018.01); B05C 17/00 (2006.01); B05B 7/04 (2006.01)
CPC B05B 7/1209 (2013.01) [B05B 1/3026 (2013.01); B05B 7/0025 (2013.01); B05B 7/2497 (2013.01); B05B 12/002 (2013.01); B05B 15/40 (2018.02); B05C 17/002 (2013.01); B05B 7/0416 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A fluid dispensing device (10) comprising:
(a) a spool valve (30) within a dispenser housing (20), the spool valve comprising a spool (40) within a spool housing (24), the spool housing comprising a spool wall (50) around the spool housing with at least one entrance opening (52) and at least one exit opening (54) defined through the spool wall;
(b) an entrance channel (22) in the dispenser housing proximate to the entrance opening in the spool wall;
(c) a force applying element (60) within the entrance channel, where the force applying element applies force against the spool wall around the entrance opening, the force applying element being generally cylindrical with opposing entrance (62) and exit (64) ends with the exit end most proximate to the spool wall,
said force applying element consisting of a porous basket element having a sequence of plates design, each plate connected to one another by spacers (69), the sequence of plates spaced between the entrance and exit ends, including a solid plate (67) that serves as a barrier (700) that prevents linear flow and forces radial flow by preventing a straight line flow path through the force applying element,
the force applying element having a primary axis, the force applying element forcing fluid flow radially through the force applying element from the primary axis and around the barrier,
wherein the force applying element forms a basket to collect particles with the solid plate serving as the bottom of the basket and the entrance end serving as the top of the basket with a brim broader than the diameter of the basket; and
(d) a hose adapter fitting (70) that has opposing entrance (72) and exit (74) ends, where the entrance end extends out from the dispenser housing and the exit end extends into the entrance channel and is in contact with the force applying element, wherein the hose adapter fitting defines a flow passage (76) extending through it from entrance end to exit end; and
wherein there is fluid communication all the way through the flow passage of the hose adapter fitting into and through the force applying element and into an entrance opening in the spool wall; and wherein the fluid dispensing device is characterized by the force applying element defining a tortuous flow path through which fluid must travel to go through the force applying element from entrance end through exit end.