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US 6,681,524 B1Granted
Insulated, weatherproof, and lockable pet door
OwnerRichard Arthur Tillsoninventor
Life of this patent
Estimating the term…
Abstract
A pet door has interior (22) and exterior frames (28) that assemble to define a tunnel through which a pet may pass. Attaching to the frames are rigid inner (34) and outer doors (36) that are each held closed at a non-vertical angle by force of their own weights. The outer door (36) and interior frame (22) are heavily insulated to reduce heat transfer through the pet door, and the pet door is windproof and extremely weather resistant. A locking bar (48) provides a secure method of locking the doors shut to prevent unwanted entry by animal or human.
Claims16
A pet door adapted to be placed over a cutout opening in a residence exterior door or wall, comprising:
- a) a relatively rigid, substantially rectangular interior frame having a mounting surface lying substantially in a plane and adapted to be mounted flush against a room door or wall, circumjacent to a cutout opening therein;
- b) said interior frame having a substantially rectangular opening through which an animal may pass;
- c) said interior frame having an oblique angled projection forming a continuous inner door stop along the sides and bottom of interior frame said opening;
- d) said interior frame having a plurality of inner door hinge knuckles along the top of said interior frame opening;
- e) said interior frame having a flange surrounding the sides, top, and bottom of said interior frame opening;
- f) a relatively rigid, substantially rectangular inner door having a plurality of inner door hinge knuckles along a top thereof;
- g) said inner door having a substantially rectangular opening through which an animal may pass;
- h) said inner door having a stop flange along the sides and bottom of said inner door opening for flush mating with an inner face of said inner door stop;
- i) said inner door having a plurality of outer door hinge knuckles situated below and inside of said inner door hinge knuckles;
- j) said inner door having an oblique angled continuous flange along the sides and bottom of said inner door opening forming an outer door stop;
- k) a relatively rigid, substantially rectangular outer door having one or more outer door hinge knuckles along a top thereof;
- l) interior face edges of said outer door being shaped to conform to an outer face of said outer door stop by flush mating;
- m) said outer door having edges shaped for passage clearance of said continuous flange on said interior frame when pivoting outwards or inwards.
10 more elements
A pet door adapted to be placed over a cutout opening in a residence exterior door or wall, comprising:
- a) a relatively rigid, substantially rectangular interior frame having a mounting surface lying substantially in a plane and adapted to be mounted flush against a room door or wall, circumjacent to a cutout opening therein;
- b) said interior frame having a substantially rectangular opening through which an animal may pass;
- c) said interior frame having a plurality of inner door hinge knuckles along the top of said interior frame opening;
- d) said interior frame having a flange surrounding the sides, top, and bottom of said interior frame opening;
- e) a relatively rigid, substantially rectangular inner door having a plurality of inner door hinge knuckles along a top thereof;
- f) said inner door having a substantially rectangular opening through which an animal may pass;
- g) said inner door having an oblique angled projection forming a continuous inner door stop along the sides and bottom of said inner door opening for flush mating with inner face of said interior frame
- h) said inner door having a plurality of outer door hinge knuckles situated below and inside of said inner door hinge knuckles;
- i) said inner door having an oblique angled continuous flange along the sides and bottom of said inner door opening forming an outer door stop;
- j) a relatively rigid, substantially rectangular outer door having one or more outer door hinge knuckles along a top thereof;
- k) interior face edges of said outer door being shaped to conform to an outer face of said outer door stop by flush mating;
- l) said outer door having edges shaped for passage clearance of said continuous flange on said interior frame when pivoting outwards or inwards.
9 more elements
Dependencies are inferred from the claim text.