US 12,007,725 B2
Hand washing timer
David M. Rogers, Cincinnati, OH (US); Heather Rogers, Cincinnati, OH (US); and Tricia L. Wright, San Francisco, CA (US)
Assigned to Time Timer LLC, Cincinnati, OH (US)
Filed by Time Timer, LLC, Cincinnati, OH (US)
Filed on Aug. 15, 2023, as Appl. No. 18/449,770.
Application 18/449,770 is a continuation of application No. 16/942,311, filed on Jul. 29, 2020, granted, now 11,762,339.
Application 16/942,311 is a continuation in part of application No. 29/743,535, filed on Jul. 22, 2020, granted, now D938834, issued on Jan. 12, 2021.
Claims priority of provisional application 62/991,802, filed on Mar. 19, 2020.
Prior Publication US 2023/0400815 A1, Dec. 14, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G04F 1/00 (2006.01); A61H 33/00 (2006.01); G02F 1/13357 (2006.01)
CPC G04F 1/005 (2013.01) [G02F 1/133603 (2013.01); A61H 33/005 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A hands-free visual timer for counting a time period comprising:
a cup-shaped housing having an interior and a battery compartment for storing at least one battery;
a door for covering the battery compartment;
a rear cover for covering the battery compartment, the rear covering being adapted to be secured to the cup-shaped housing by rotating the rear cover;
a circuit board containing light emitting diodes;
a liquid crystal display capable of showing an annular ring of triangles which disappear as time elapses;
a front bezel secured to the cup-shaped housing, the front bezel having a circular opening allowing light to pass through the opening in the front bezel;
at least one light sensor for activating the timer; and
a plastic front lens.