Animal Door Having an Adjustable Resistance Against Being Opened
AssigneeRadio Systems Corporation
InventorsJames R. Bosserdet, JR., Thomas P. Bjorholm
Life of this patent
Estimating the term…
Abstract
Described is an animal door that is movable between a closed position and an open position and that has an adjustable resistance against the door being removed from the closed position to the open position. More specifically, the animal door defines a passageway and includes a flap that is moveable between the closed position and the open position, whereby the flap obstructs the passageway when at the closed position. The animal door generates a magnetic force that generates a resistance against the flap being moved from the closed position to the open position, whereby magnitude of the magnetic force, and thus the resistance, is adjustable.
Claims19
An animal door comprising:
- a frame adapted to be installed at a through-opening defined by a structure, said frame defining a passageway at the through-opening;
- a flap mechanically engaged with said frame, said flap being movable between a closed position and an open position;
- and
- at least one magnet disposed at either said frame or said flap, said at least one magnet generates a magnetic force that generates a resistance against said flap being moved from the closed position, at least one of said at least one magnet being removably disposed such that the resistance is adjustable.
An animal door comprising:
- a frame adapted to be installed at a through-opening defined by a structure, said frame defining a passageway at the through-opening;
- a flap mechanically engaged with said frame, said flap being movable between a closed position and an open position;
- a metallic member removably disposed at either said frame or said flap;
- and
- a magnet disposed at said frame when said metallic member is disposed at said flap and disposed at said flap when said metallic member is disposed at said frame, said magnet generating a magnetic force that draws said magnet and said metallic member toward one another, the magnetic force generating a resistance against said flap being moved from the closed position, the resistance being reduced when said metallic member is removed and increased when said metallic member is disposed.
An animal door comprising:
- a frame adapted to be installed at a through-opening defined by a structure, said frame defining a passageway at the through-opening;
- a flap mechanically engaged with said frame, said flap being movable between a closed position and an open position;
- at least one metallic member disposed at either said frame or said flap;
- and
- at least one magnet disposed at either said frame or said flap, said at least one magnet generating a magnetic force that draws at least one of said at least one magnet toward either another of said at least one magnet or at least one of said at least one metallic member, the magnetic force generating a resistance against moving said flap from the closed position;
- at least one of said at least one metallic member and said at least one magnet being removably disposed.
Dependencies are inferred from the claim text.