US 12,115,472 B2
Bi-directional spring filter
Larry G. Keast, Houston, TX (US); and Richard Arancelovic, Houston, TX (US)
Assigned to Larry G. Keast, Houston, TX (US)
Filed by Larry G. Keast, Houston, TX (US)
Filed on Oct. 23, 2023, as Appl. No. 18/382,564.
Claims priority of provisional application 63/418,881, filed on Oct. 24, 2022.
Prior Publication US 2024/0131454 A1, Apr. 25, 2024
Prior Publication US 2024/0226778 A9, Jul. 11, 2024
Int. Cl. B01D 29/11 (2006.01); B01D 29/66 (2006.01); B01D 35/26 (2006.01); E21B 3/02 (2006.01); E21B 19/16 (2006.01)
CPC B01D 29/114 (2013.01) [B01D 29/66 (2013.01); B01D 35/26 (2013.01); E21B 3/022 (2020.05); E21B 19/16 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A filter assembly comprising:
a main body having a bore therein forming an inner surface, the inner surface configured with a receptacle;
a filter medium disposed at least partially in the receptacle, the filter medium comprising a plurality of windings, an at least one of the plurality of windings separated by a clearance to an adjacent winding; and
a head adapter coupled with the main body, the head adapter configured with a plug engaged with the filter medium,
wherein the filter assembly is coupled in fluid communication between a pump and a power swivel.