An interchangeable pet door is disclosed. The interchangeable pet door comprises a door, a knob, a plurality of windows, a frame, and a hinge. The knob comprises a latch for securely closing the door. When the interchangeable pet door comprises a hinge, inserting the hinge into a hinge recess securely locks the door. The different elements of the interchangeable pet door are configured to be oriented in a predetermined, interchangeable, or customizable manner. The door is configured to open from, slide into, revolve within, or move in some other non-limiting equivalent way from or relative to a frame.

A package delivery door assembly is configured for being installed in an opening in a garage door. The assembly includes a frame having an outer peripheral planar portion configured to directly contact an outer surface of the garage door when the assembly is installed, and an inwardly extending flange portion configured to extend into the opening in the garage door when the assembly is installed. The assembly further includes two (or more) inner brackets. Each inner bracket has an inner planar portion and a ledge perpendicular to the inner planar portion. The ledges of the at least two inner brackets are configured to be coupled to the inwardly extending flange portion of the frame when the door assembly is installed, thereby avoiding additional holes being cut into the garage door. The assembly further includes a package delivery door hingedly attached to the frame.

A package delivery door assembly is configured for being installed in an opening in a garage door. The assembly includes a frame having an outer peripheral planar portion configured to directly contact an outer surface of the garage door when the assembly is installed, and an inwardly extending flange portion configured to extend into the opening in the garage door when the assembly is installed. The assembly further includes two (or more) inner brackets. Each inner bracket has an inner planar portion and a ledge perpendicular to the inner planar portion. The ledges of the at least two inner brackets are configured to be coupled to the inwardly extending flange portion of the frame when the door assembly is installed, thereby avoiding additional holes being cut into the garage door. The assembly further includes a package delivery door hingedly attached to the frame.

A landing pad receives and stores packages delivered from an aerial vehicle and awaiting pickup from an aerial vehicle. The landing pad can be placed outside of a window and can contain a transmitter for sending out an identification signal via radio frequency to aid aerial vehicles in finding the landing pad. The landing pad contains a landing platform with a trapdoor that leads to a storage compartment. The trapdoor can be configured to only open when it receives a signal from an authorized aerial vehicle. The storage compartment can be accessed via a storage compartment door which can contain a locking mechanism. The storage compartment can be climate controlled. The landing pad can also have a transmitter that emits sounds to discourage animals from nesting on or near the landing pad. The landing pad can also include a solar power generator as a source of electrical energy.

A landing pad receives and stores packages delivered from an aerial vehicle and awaiting pickup from an aerial vehicle. The landing pad can be placed outside of a window and can contain a transmitter for sending out an identification signal via radio frequency to aid aerial vehicles in finding the landing pad. The landing pad contains a landing platform with a trapdoor that leads to a storage compartment. The trapdoor can be configured to only open when it receives a signal from an authorized aerial vehicle. The storage compartment can be accessed via a storage compartment door which can contain a locking mechanism. The storage compartment can be climate controlled. The landing pad can also have a transmitter that emits sounds to discourage animals from nesting on or near the landing pad. The landing pad can also include a solar power generator as a source of electrical energy.

There is provided a door hatch assembly for an aperture in a screen door, the assembly including a substantially round rim mountable on a periphery of the aperture; a static member mounted in the rim and configured to cover at least a first portion of the aperture; and a hatch engaged with the static member and movable over the static member to reversibly cover at least a second portion of the aperture.

There is provided a door hatch assembly for an aperture in a screen door, the assembly including a substantially round rim mountable on a periphery of the aperture; a static member mounted in the rim and configured to cover at least a first portion of the aperture; and a hatch engaged with the static member and movable over the static member to reversibly cover at least a second portion of the aperture.

An optical member includes a light source, a first substrate to be a light guide that guides emitted light from the light source, a variable layer in contact with a predetermined surface of the first substrate, and a second substrate facing the first substrate via the variable layer. When a refractive index of the first substrate is n1, a refractive index of the variable layer can be changed to n2 or n3 (where n2>n3), and n1, n2, and n3 satisfy a relationship of |n1−n2|<|n1−n3|.

An optical member includes a light source, a first substrate to be a light guide that guides emitted light from the light source, a variable layer in contact with a predetermined surface of the first substrate, and a second substrate facing the first substrate via the variable layer. When a refractive index of the first substrate is n1, a refractive index of the variable layer can be changed to n2 or n3 (where n2>n3), and n1, n2, and n3 satisfy a relationship of |n1−n2|<|n1−n3|.

Disclosed is a pet portal that allows various sizes of pets to easily enter/exit a house through a baffle opening and trap tunnel. The baffle opening made out of a flexible insulating material that bounces back into its original shape after being disturbed when an animal passes through the portal. While in the closed orientation, the baffle material blocks the outdoor environment, maintaining a constant and comfortable temperature inside the house and prevent entry of insects.