US 12,421,792 B2
Pet door
Marc Brush, Knoxville, TN (US); Cody Stricklin, Knoxville, TN (US); and Jason Graves, Knoxville, TN (US)
Assigned to Radio Systems Corporation, Knoxville, TN (US)
Filed by Radio Systems Corporation, Knoxville, TN (US)
Filed on Oct. 17, 2023, as Appl. No. 18/380,889.
Application 18/380,889 is a continuation in part of application No. 18/223,840, filed on Jul. 19, 2023.
Application 18/223,840 is a continuation in part of application No. 17/901,959, filed on Sep. 2, 2022, granted, now 11,983,978.
Claims priority of provisional application 63/240,161, filed on Sep. 2, 2021.
Prior Publication US 2024/0044175 A1, Feb. 8, 2024
Int. Cl. E06B 7/32 (2006.01); A01K 1/035 (2006.01); E05B 47/00 (2006.01); E05B 65/06 (2006.01)
CPC E06B 7/32 (2013.01) [A01K 1/035 (2013.01); E05B 47/0012 (2013.01); E05B 65/06 (2013.01); E05B 2047/0024 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A pet door, comprising:
a frame defining a passageway therethrough and having bottom portion;
a flap pivotally coupled to the frame for movement between a closed position adjacent the frame and an open position away from the frame, the flap having a bottom peripheral edge at least partially defining the flap;
a latch assembly coupled to and positioned within the bottom portion of the frame, the latch assembly including:
an electric motor;
a motor drive shaft having a first end coupled to the electric motor and a second end oppositely disposed from the first end;
a drive pin coupled to the second end of the motor drive shaft;
a drive wheel coupled to the drive pin, the drive wheel incrementally rotating with each full rotation of the drive pin, the drive wheel being coupled to a cam drive shaft extending horizontally along and within the bottom portion of the frame, and
a plurality of Y-shaped latches coupled to the cam drive shaft having a catch protruding from the bottom portion of the frame for selective rotational engagement of the bottom peripheral edge of the flap depending upon the rotational position of the cam drive shaft, the selective rotational engagement between the catch of the Y-shaped latches and the bottom peripheral edge of the flap determining the locking and unlocking of the flap relative to the frame.