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A pressure relief latch includes a housing fastenable to a first panel of a structure and a rotatable handle attached to the housing. The housing includes a compression spring that biases a roller toward a second panel. A keeper assembly is attached to the second panel, the keeper assembly having a

A pressure relief latch includes a housing fastenable to a first panel of a structure and a rotatable handle attached to the housing. The housing includes a compression spring that biases a roller toward a second panel. A keeper assembly is attached to the second panel, the keeper assembly having a keeper extending therefrom. When the latch is in the closed position, the roller engages the keeper. When the handle is rotated upward, the roller disengages the keeper. A safety release may be provided to prevent inadvertent rotation of the handle.

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1. A pressure relief latch for use with first and second panels of a structure to be secured by the latch, the pressure relief latch comprising: a housing fastenable to the first panel, the housing comprising a first end, a second end, an upper surface, a lower surface, a first side depending from t

1. A pressure relief latch for use with first and second panels of a structure to be secured by the latch, the pressure relief latch comprising: a housing fastenable to the first panel, the housing comprising a first end, a second end, an upper surface, a lower surface, a first side depending from the lower surface, and a second opposing side depending from the lower surface, the first and second sides defining a channel therebetween;a handle pivotably attached to the housing;a roller support pin extending from the first side of the housing to the second side of the housing at the first end of the housing;a handle pin extending longitudinally from the first side of the housing to the second side of the housing at the second end of the housing;a yoke attached to the roller support pin, the yoke having a first end and a second end;a roller attached to the first end of the yoke;a first spring plate attached to the second end of the yoke and facing the second end of the housing;a second spring plate attached to the handle pin and facing the first spring plate;a compression spring disposed between the first spring plate and the second spring plate;a keeper assembly fastenable to the second panel, the keeper assembly comprising an upper surface and a lower surface;a keeper housing depending from the lower surface of the keeper assembly, the keeper housing defining a bore therethrough;a keeper disposed within the bore of the keeper housing and protruding therefrom such that the keeper engages the roller when the pressure relief latch is in a closed position. 2. The pressure relief latch according to claim 1, further comprising a safety release attached to the handle, wherein when the safety release is engaged, upward rotation of the handle is prevented, and further wherein when the safety release is disengaged, upward rotation of the handle is allowed, the upward rotation of the handle causing the roller to move away from the keeper and the roller to disengage the keeper, allowing at least one of the panels to open. 3. The pressure relief latch according to claim 2, further comprising a locking pin extending from the first side of the housing to the second side of the housing between the roller support pin and the handle pin, wherein the safety release comprises a hook, and further wherein when the safety release is engaged the hook of the safety release engages the locking pin, preventing upward rotation of the handle. 4. The pressure relief latch according to claim 1, wherein the compression spring is a first compression spring, and further comprising a second compression spring attached to the first spring plate and the second spring plate and extending therebetween, the second compression spring having a diameter less than a diameter of the first compression spring such that the second compression spring is disposed within the first compression spring. 5. The pressure relief latch according to claim 1, wherein the structure being secured by the latch is subject to internal pressure, and further wherein when the pressure inside the structure reaches a predetermined level the roller is forced upward along the keeper until it disengages the keeper, thereby relieving pressure within the structure. 6. The pressure relief latch according to claim 5, further comprising an adjustment nut attached to the keeper, wherein rotation of the adjustment nut causes axial movement of the keeper within the keeper housing and sets the predetermined pressure. 7. The pressure relief latch according to claim 1, wherein the keeper comprises a notch for secure engagement of the roller. 8. A pressure relief latch for use with first and second aircraft panels enclosing an interior space of said aircraft susceptible to high pressure, the pressure relief latch comprising: a housing comprising a first end and a second end, the housing further comprising a first attachment plate comprising an upper surface and a lower surface and defining a plurality of openings therethrough for attaching the housing to the first aircraft panel;a cutout portion defined in the first attachment plate and extending from the upper surface to the lower surface thereof;first and second support tabs depending from the lower surface of the attachment plate at the first end of the housing, said first and second support tabs being spaced apart and defining a channel therebetween, said first support tab defining a first elongate aperture therethrough and said second support tab defining a second elongate aperture therethrough;first and second hinge plates depending from the lower surface of the attachment plate at the second end of the housing, said first and second hinge plates being spaced apart and defining a channel therebetween;first and second locking plates depending from the lower surface of the attachment plate between the first and second support tabs and the first and second hinge plates, the first and second locking plates being spaced apart and defining a channel therebetween;a pivot pin extending between the first hinge plate and the second hinge plate;a locking pin extending between the first locking plate and the second locking plate;a roller support pin extending from the first elongate aperture of the first support tab and the second elongate aperture of the second support tab;a handle disposed within the cutout portion of the first attachment plate, the handle pivotably attached to the pivot pin and comprising first and second spaced-apart hinge members depending therefrom, the first and second spaced-apart hinge members defining a channel therebetween, the first hinge member defining a third elongate aperture therethrough, and the second hinge member defining a fourth elongate aperture therethrough;a handle pin extending between the third aperture of the first hinge member and the fourth aperture of the second hinge member;a safety release pivotably attached to the handle and comprising an upper surface and a lower surface, the safety release further comprising first and second hooks depending from the lower surface thereof, wherein when said safety release is engaged, said first and second hooks engage the locking pin to prevent upward rotation of the handle;a yoke attached to the roller support pin, the yoke comprising roller disposed on a first side thereof;a first spring plate attached to the yoke on a second side thereof;a second spring plate attached to the handle pin;a spring support attached to the first spring plate and the second spring plate and extending therebetween;a first spring disposed along the length of the spring support between the first spring plate and the second spring plate;a second spring disposed along the length of the spring support between the first spring plate and the second spring plate, the second spring having a diameter greater than a diameter of the first spring such that the first spring is disposed within the second spring;a keeper assembly comprising a second attachment plate, the second attachment plate comprising an upper surface and a lower surface and defining a plurality of openings extending from the upper surface to the lower surface, the openings for receiving fasteners therethrough for attaching the keeper assembly to said second aircraft panel;a keeper housing depending from the lower surface of the second attachment plate, the keeper housing defining a bore extending therethrough;a keeper disposed within the bore of the keeper housing and extending from a first side of the keeper housing to engage the roller when the pressure relief latch is in a closed position,wherein when the pressure relief latch is in a closed position, the keeper engages the roller such that the latch retains said first and second panels in a closed position,and further wherein when the safety release is actuated, the first and second hooks disengage the locking pin, allowing upward rotation of the handle, the upward rotation of the handle causing the roller to disengage the keeper. 9. The pressure relief latch according to claim 8, wherein the interior space of the aircraft being secured by the latch is subject to internal pressure, and further wherein when the pressure inside the structure reaches a predetermined level the roller is forced upward along the keeper until it disengages the keeper, thereby relieving pressure within the interior space. 10. The pressure relief latch according to claim 9, further comprising an adjustment nut attached to the keeper, wherein rotation of the adjustment nut causes axial movement of the keeper within the keeper housing and sets the predetermined pressure. 11. The pressure relief latch according to claim 9, further comprising an adjustment nut attached to the second spring plate, wherein rotation of the adjustment nut in a first direction causes compression of the first and second spring, and rotation of the adjustment nut in a second direction causes expansion of the first and second spring, and wherein the directional rotation of the adjustment nut sets the predetermined pressure. 12. The pressure relief latch according to claim 8, further comprising a torsion spring biasing against the lower surface of the safety release. 13. The pressure relief latch according to claim 8, further comprising a clip engaging the handle pin and preventing side to side movement thereof.