Door having improved closing and latching systems
OwnerClarence E. Williamsinventor
Life of this patent
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Abstract
A pair of doors hinged to a frame and including a self-locking three-point latch and coordinated closing system.
Claims10
A door construction comprising a frame having upper and lower and spaced side parts, a pair of doors supported by said frame, one of said doors connected adjacent one side edge to said frame, first and second generally vertically oriented rods carried by said one door adjacent the other side edge of the door, guide means for said rods wherein said first rod is shiftable generally axially relative to said one door between an extended position with one end protruding from the top of the door and a retracted position and wherein said second rod is shiftable relative to said one door between an extended position with one end protruding from the bottom of the door and a retracted position, latch means carried by said one door, means connecting the other end of each rod to said latch means for movement of the rods between their respective extended and retracted positions upon rotation of the latch means, said latch means having an opening position in which said rods are in their retracted positions and a locking position in which said rods are in their extended positions, said latch means including retainer means engageable with the other of said doors when said doors are each in a closed position and said latch means is in its locking position, biasing means associated with said latch means for urging the latch means into its locking position, a socket in each of said frame upper and lower parts, said rod one ends protruding lockingly into said sockets when said latch means is in its locking position, catch means carried by said one door for engaging one of said rods when said latch means is rotated into its opening position to releasably secure the latch means in its opening position and the rods in their retracted positions, said frame including trip means for contacting said one rod and disengaging said one rod from said catch means when said one door is closed with said latch means in its opening position whereby said biasing means will urge the latch means into its locking position and cause said rod one ends to enter said frame sockets and said retainer means to engage said other door in its closed position.
A door construction comprising a frame having upper and lower and spaced side parts, a pair of doors, each door hinged at one side edge to a said part of the frame, closure means associated with each door for normally urging said door into a closed position, shiftable prop means associated with one door for maintaining said one door in a partly closed position until the other door is in its closed position, said prop means including a protrusion part, means pivotally connecting said protrusion part to said frame at adjacent its upper or lower parts for movement about a horizontal plane, biasing means urging said protrusion part into a first position extending from said frame, said protrusion part when in its first position contacting said one door to maintain said one door in its partly closed position, said protrusion part having a second position contacting said one door when in its closed position, said other door including abutment means engaging said protrusion part between said one door and said pivot connecting means for the protrusion part when in its said first position contacting said one door for urging said protrusion part from its first into its second position as said other door is closed.
Dependencies are inferred from the claim text.