US2021140355A1PendingUtilityA1

Exhaust tail pipe insert/emissions filter

Individually held — no corporate assignee on recordPriority: Oct 20, 2015Filed: Nov 2, 2020Published: May 13, 2021
Est. expiryOct 20, 2035(~9.2 yrs left)· nominal 20-yr term from priority
F01N 3/021Y02A50/20F01N 3/24Y02T10/12F01N 3/0215F01N 3/022F01N 2410/08F01N 2240/05F01N 3/031F01N 2450/30F01N 3/0211F01N 13/082F01N 2450/18F01N 3/0892F01N 3/023
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Claims

Abstract

An exhaust tailpipe/emissions filter employs a reusable/replaceable insert and is configured to slide into and/or onto the exhaust tailpipe of the automobile to reduce air pollution.

Claims

exact text as granted — not AI-modified
1 - 13 . (canceled) 
     
     
         14 . An emissions exhaust filtering system for an exhaust pipe for an on or off-road engine comprising:
 a plurality of filter sections (sectionals), wherein the plurality of filter sections includes at least one of a ball filter section, a cone filter section, a grid filter section, and a double cone filter section; and   a filter cap.   
     
     
         15 . The filtering system of  claim 14 , wherein the plurality of filter sections are interchangeable (re-arrangeable). 
     
     
         16 . The filtering system of  claim 15 , wherein the plurality of filter sections comprise opposing threads. 
     
     
         17 . The filtering system of  claim 14 , wherein at least one of the plurality of filter sections comprises a screen. 
     
     
         18 . The filtering system of  claim 17 , wherein the screen comprises a wash-coat adapted to react to one or more exhaust vapors. 
     
     
         19 . The filtering system of  claim 14 , wherein the plurality of filter sections comprises the ball filter section and the ball filter section includes a ball filter, wherein the ball filter includes a core and an outer layer. 
     
     
         20 . The filtering system of  claim 19 , wherein the outer layer comprises a surface having a plurality of spherically shaped indentions recessed into the outer layer. 
     
     
         21 . The filtering system of  claim 14 , wherein the plurality of filter sections comprises the cone filter section and the cone filter section includes a cone filter, wherein the cone filter includes a filter stack comprising one or more layers to form a gas permeable layer that allows liquid to traverse the cone filter  92  in a single direction. 
     
     
         22 . The filtering system of  claim 21 , wherein the filter stack comprises an inner cone layer, an outer cone layer, and a membrane therebetween. 
     
     
         23 . The filtering system of  claim 22 , wherein at least one of the inner cone layer and the outer cone layer includes a plurality of openings to expose the membrane 
     
     
         24 . The filtering system of  claim 21 , wherein the cone filter section includes a cone filter section outer housing, and the cone filter section outer housing and the cone filter define a void therebetween, and the void includes a chemical & fluid-based mixture containing a biological absorbent. 
     
     
         25 . The filtering system of  claim 24 , wherein the biological absorbent is at least one an algae and/or a nitrogen-fixing bacteria. 
     
     
         26 . The filtering system of  claim 21 , wherein the cone filter includes an upper filter section and a lower filter section and the upper filter section and the lower filter section have different angles with respect to a center axis of the cone filter. 
     
     
         27 . The filtering system of  claim 14 , wherein the plurality of filter sections comprises the grid filter section and the grid filter section includes a plurality of elongated tubes. 
     
     
         28 . The filtering system of  claim 27 , wherein the elongated tubes have a cross sectional shape of a quadrilateral, a square, or a rectangle. 
     
     
         29 . The filtering system of  claim 27 , wherein one or more of the elongated tubes include a wash-coat on an inside of the one or more elongated tubes. 
     
     
         30 . The filtering system of  claim 14 , wherein the plurality of filter sections comprises the double cone filter section and the double cone filter section includes at least one cone set each having an upper cone and a lower cone, each upper cone including an upper cone wide upper end and an upper cone narrow lower end such that the upper cone wide upper end has a larger radius than the upper cone narrow lower end, each lower cone including a lower cone narrow upper end and a lower end wide lower end such that the lower cone wide lower end has a larger radius than the lower cone narrow lower end. 
     
     
         31 . The filtering system of  claim 30 , wherein the double cone filter section further comprises a screen between the upper cone and the lower cone. 
     
     
         32 . The filtering system of  claim 31 , wherein the screen comprises a wash-coat. 
     
     
         33 . The filtering system of  claim 30 , wherein the double cone filter section comprises a plurality of cone sets.

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