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US 5,078,197 AGranted
Manually operated industrial roll door
AssigneeKelley Company, Inc.
InventorWilliam B. Weishar
Life of this patent
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AssigneeKelley Company, Inc.
InventorWilliam B. Weishar
Estimating the term…
A manually operated roll door. The door comprises a flexible door panel that is coiled on a drum located above the header of a doorway in a building, and the door panel is manually movable between an open position where the door panel is coiled on the drum, to a closed position where it encloses the doorway. A latch mechanism is associated with the door panel and automatically latches the door panel in the closed position. A handle is attached to the lower end of the door panel and the handle is connected to the latch mechanism in a manner such that an upward pull on the handle to open the door panel will simultaneously release the latch mechanism. A counterbalancing weight is operably connected to the door panel and partially counterbalances the weight of the door panel to aid in manually moving the door panel to the open position.
A manually operated roll door construction to enclose a doorway in a structure, comprising a frame to be mounted to the structure, a drum mounted for rotation on the frame and disposed above the doorway, a flexible door panel disposed in coiled form on said drum, said door panel being movable between an unwound closed position where said door panel encloses said doorway to an open position where said door panel is wound on said drum, latch means for latching the door panel in said closed position and movable between a latching position and a release position, handle means operably connected to the lower portion of the door panel and disposed to be engaged by an operator to move the door panel from the closed position to the open position, said handle means being movable between a first position and a second position, and means responsive to an upward pull on said handle means for releasing said latch means and comprising a flexible operating element interconnecting said handle means and said latch means, said flexible operating element being constructed and arranged to move said latch means to the released position when said upward pull is applied to said handle means.
A manually operated roll door to enclose a doorway in a structure, comprising a frame mounted on said structure, a drum mounted for rotation on the frame and located above the doorway, a flexible door panel disposed in coiled form on said drum, said door panel being movable between an unwound closed position where said door panel encloses said doorway to an open position where said door panel is wound on said drum, latch means for latching the door panel in the closed position and movable between a latching position and a release position, counterbalancing means operably connected to said drum for counterbalancing the weight of the door panel, said counterbalancing means comprising a counterweight, a spool connected to said drum, and a flexible member to support the counterweight, one end of said flexible member connected to said spool and the opposite end of said flexible member being attached to the lower end of said door panel, handle means operably connected to the lower portion of said door panel and disposed to be engaged by an operator to move the door panel between the closed position and the open position, and means responsive to movement of the door panel to the closed position for moving said latch means to the latching position.
A manually operated roll door to enclose a doorway in a building, comprising a frame attached to said building, a drum mounted for rotation on said frame and located above the doorway, a flexible door panel disposed in coiled form on said drum, said door panel being movable between an unwound closed position where said door panel encloses said doorway to an open position where said door panel is wound on said drum, a rigid beam attached to the lower end of said door panel, latch means for latching the door panel in a closed position, said latch means including a fixed latch element and a movable latch element, one of said latch elements being connected to an end of said beam and the other of said latch elements being connected to the lower end of said frame, said movable latch element being movable between a latching position and a release position, biasing means for biasing said movable latch element to the latching position, cam means disposed to be engaged by said movable latch element as said door panel moves to the closed position for moving said movable latch element to the release position, handle means connected to the beam for manually moving said door panel between the open and closed positions, and release means operably connected to said movable latch element for moving said movable latch element to the release position to enable the door to be moved from the closed to the open position.
A manually operated roll door construction to enclose a doorway in a structure, comprising a frame to be mounted on the structure, a drum mounted for rotation on the frame and disposed above the doorway, a flexible door panel disposed in coiled form on said drum, said door panel being movable between an unwound closed position where said door panel encloses said doorway to an open position where said door panel is wound on said drum, latch means for latching the door panel in the closed position, handle means operably connected to the door panel and disposed to be engaged by an operator to move the door panel between the closed position and open position, counterbalancing means operably connected to said drum for counterbalancing the weight of the door panel, and means for preventing unwinding of said door panel from said drum when said door panel is in the closed position and is subjected to an external force transverse to the plane of the closed door panel.
Dependencies are inferred from the claim text.