US 11,770,664 B2
Wax management system
Michael Barrett, Campbell, CA (US); Manny Ocano, Santa Cruz, CA (US); Daniel Shen, Palo Alto, CA (US); Iain Butler, Santa Cruz, CA (US); Florent Michel, Annemasse (FR); Raphael Michel, Palo Alto, CA (US); and Keith Wong, San Francisco, CA (US)
Assigned to EARGO, INC., San Jose, CA (US)
Filed by Eargo, Inc., San Jose, CA (US)
Filed on Sep. 4, 2021, as Appl. No. 17/467,205.
Application 17/467,205 is a division of application No. 16/131,324, filed on Sep. 14, 2018, granted, now 11,140,498.
Claims priority of provisional application 62/573,254, filed on Oct. 17, 2017.
Prior Publication US 2021/0400406 A1, Dec. 23, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04R 25/00 (2006.01); H04R 1/10 (2006.01)
CPC H04R 25/654 (2013.01) [H04R 1/1016 (2013.01); H04R 25/652 (2013.01); H04R 25/658 (2013.01); H04R 25/656 (2013.01); H04R 2225/023 (2013.01); H04R 2225/025 (2013.01); H04R 2460/17 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A guard for a space access device configured to output air flow through a distal end portion thereof, said guard comprising:
a housing having a proximal end opening and a distal end opening and a wall having an internal wall surface and an external wall surface, wherein said proximal end opening is configured to be placed nearer than said distal end opening to the output of air flow from the distal end portion of the space access device;
a filter portion positioned in said housing between said proximal and distal end openings, said filter portion comprising at least one aperture to allow air to pass from said proximal end opening of said housing to said distal end opening;
a berm contacting a perimeter of said filter portion and extending toward a distal end of said guard; and
a passageway having a first opening opening to a space proximal of said filter portion and internal of said internal wall surface at a location where said berm contacts said perimeter of said filter portion, said passageway extending through said wall of said housing, and having a second opening at an end opposite said first opening, said second opening opening into said external wall surface at a location distal of said filter portion.