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US 10,316,663 B2Granted
Mine door
AssigneeJack Kennedy Metal Products & Buildings, Inc.
InventorsWilliam R. Kennedy, John M. Kennedy
Life of this patent
Estimating the term…
Abstract
A reinforced lightweight mine door for installation in a mine passageway. The mine door includes a generally rectangular sheet metal door panel having four sides and four corners, and a reinforcing structure projecting from a face of the door panel. The reinforcing structure has a central section and a plurality of channel sections extending from the central section toward respective sides or corners of the door panel. A mine door including at least one hinge arrangement having unique reversibility features is also disclosed.
Claims20
A reinforced lightweight mine door for installation in a mine passageway, the mine door comprising
- a generally rectangular sheet metal door panel having four sides and four corners,
- a reinforcing structure projecting from a face of the door panel, said reinforcing structure comprising a central section and a plurality of channel sections extending from the central section toward respective sides or corners of the door panel, the plurality of channel sections including at least three channel sections that radiate from the central section in different directions toward the respective sides or corners of the door panel,
- at least one flat hinge area on the door panel immediately adjacent a hinge side of the door panel, said door panel being free of reinforcement connecting said channel sections and said at least one flat hinge area,
- at least one hinge mounted on the at least one flat hinge area, and
- wherein each channel section has a length extending from the central section to a distal end of the channel section and opposite sides extending along the length, the distal end and the opposite sides of each channel section projecting from the face of the door panel;
- wherein at least two of the plurality of channel sections comprises a hinge side channel section that extends between the central section and the hinge side of the door panel;
- wherein the opposite sides of each hinge side channel section terminate at the distal end of the respective hinge side channel section;
- and
- wherein the distal end of each hinge side channel section is located adjacent to the hinge side of the door panel and is spaced apart from the hinge side of the door panel.
6 more elements
A mine door assembly for installation in a mine passageway, the mine door assembly comprising
- a mine door frame defining a doorway, the doorway having opposite first and second ends spaced apart along a thickness of the doorway, opposite first and second sides spaced apart along a width of the doorway, and a top and a bottom spaced apart along a height of the doorway, the mine door frame comprising a first side portion defining at least the first side of the doorway and a second side portion defining at least the second side of the doorway, the mine door frame having a first face lying generally in a first plane at the first end of the doorway and facing outwardly away from the mine door frame in a first direction and a second face lying generally in a second plane at the second end of the doorway and facing outwardly away from the mine door frame in a second direction opposite the first direction, the first and second faces of the mine door frame being spaced apart along the thickness of the doorway,
- a mine door comprising at least one spring-loaded hinge for mounting the mine door on the mine door frame and urging the mine door toward a closed position, said spring-loaded hinge comprising a bracket,
- at least one first fastener on the first side portion of the mine door frame adjacent the first face of the mine door frame,
- at least one second fastener on the second side portion of the mine door frame adjacent the second face of the mine door frame,
- wherein the bracket of the at least one spring-loaded hinge is mountable on the at least one first fastener on the first side portion of the mine door frame to selectively establish a first releasable connection with the mine door frame and wherein the bracket of the at least one spring-loaded hinge is mountable on the at least one second fastener on the second side portion of the mine door frame to selectively establish a second releasable connection with the mine door fame,
- wherein the first releasable connection mounts the mine door on the mine door frame in a first position at the first face of the mine door frame and wherein the mine door is openable by swinging on the at least one spring-loaded hinge away from the first face of the mine door frame in said first direction when the mine door is connected to the mine door frame by the first releasable connection,
- wherein the second releasable connection mounts the mine door on the mine door frame in a second position at the second face of the mine door frame and wherein the mine door is openable by swinging on the at least one spring-loaded hinge away from the second face of the mine door frame in said second direction when the mine door is connected to the mine door frame by the second releasable connection.
4 more elements
A mine door assembly for installation in a mine passageway, the mine door assembly comprising
- a mine door frame defining a doorway, the doorway having opposite first and second ends spaced apart along a thickness of the doorway, opposite first and second sides spaced apart along a width of the doorway, and a top and a bottom spaced apart along a height of the doorway, the mine door frame comprising a first side portion defining at least the first side of the doorway and a second side portion defining at least the second side of the doorway, the mine door frame having a first face lying generally in a first plane at the first end of the doorway and facing outwardly away from the mine door frame in a first direction and a second face lying generally in a second plane at the second end of the doorway and facing outwardly away from the mine door frame in a second direction opposite the first direction, the first and second faces of the mine door frame being spaced apart along the thickness of the doorway,
- a mine door comprising at least one hinge for mounting the mine door on the mine door frame, said hinge comprising at least one bracket having a keyhole slot,
- at least one first fastener on the first side portion of the mine door frame adjacent the first face of the mine door frame,
- at least one second fastener on the second side portion of the mine door frame adjacent the second face of the mine door frame,
- wherein the keyhole slot is adapted to receive the at least one first fastener for selectively lockingly engaging the bracket with the fastener to establish a first releasable connection between the mine door and the mine door frame, the first releasable connection releasably mounting the mine door on the mine door frame in a first position at the first face of the mine door frame, wherein the mine door is openable by swinging on the at least one hinge away from the first face of the mine door frame in said first direction when the mine door is connected to the mine door frame by the first releasable connection, and
- wherein the keyhole slot is adapted to receive the at least one second fastener for selectively lockingly engaging the bracket with the fastener to establish a second releasable connection between the mine door and the mine door frame, the second releasable connection releasably mounting the mine door on the mine door frame in a second position at the second face of the mine door frame, wherein the mine door is openable by swinging on the at least one hinge away from the second face of the mine door frame in said second direction when the mine door is connected to the mine door frame by the second releasable connection.
3 more elements
Dependencies are inferred from the claim text.