Door fastening device
AssigneeBanham Patent Locks Limited
InventorBrian Edward Cowper
Life of this patent
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Abstract
A door fastening device comprising a bolt movable between a retracted position and an extended position where at least part of the bolt extends, in use, to fasten the door, the bolt being linked to an abutment member, the part of the bolt being movable to its extended position in engagement, in use, of a bolt member of a lock or latch of the door with the abutment member, the abutment member being a cam which is adjustable to compensate for different clearances, in use, between the device and the door in its closed position, to ensure sufficient engagement of the abutment member by the bolt member to move the part of the bolt to its extended position, and the cam having a flat, first surface and a second surface on a nose part.
Claims30
A door fastening device for use with a door that is movable, in use, between an open position and a closed position, the door fastening device comprising a casing, a bolt movable between a retracted position and an extended position where at least part of the bolt extends through an opening in the casing to fasten the door, in use, the bolt being linked to an abutment member by a single link, said part of the bolt being movable to its extended position by engagement, of a bolt member of a lock or latch of the door with said abutment member, said abutment member being mounted on the link and adjustable to compensate for different clearances, in use, between the casing and the door in its closed position, to ensure sufficient engagement of the abutment member by the bolt member to move said part of the bolt to its extended position, a faceplate with an opening for passage of said bolt member, and means for relative fixing adjustment between the faceplate and the casing to compensate for different relative dispositions, in use, between the door and the casing.
A door fastening device comprising a bolt movable between a retracted position and an extended position where at least part of the bolt extends, in use, to fasten the door, the bolt being linked to an abutment member by a single link, said part of the bolt being movable to its extended position in engagement, of a bolt member of a lock or latch of the door with said abutment member, said abutment member being a cam mounted on the link, the cam being adjustable to compensate for different clearances, in use, between the device and the door in its closed position, to ensure sufficient engagement of the abutment member by the bolt member to move said part of the bolt to its extended position, and the cam having a flat, first surface and a second surface on a nose part.
A door fastening device for use with a door that is movable, in use, between an open position and a closed position, the door fastening device comprising a casing, a bolt movable between a retracted position and an extended position where at least part of the bolt extends through an opening in the casing to fasten the door, in use, the bolt being linked to an abutment member, said part of the bolt being movable to its extended position by engagement of a bolt member of a lock or latch of the door with said abutment member, said abutment member being adjustable to compensate for different clearances, in use, between the casing and the door in its closed position, to ensure sufficient engagement of the abutment member by the bolt member to move said part of the bolt to its extended position, a faceplate with an opening for passage of said bolt member, and means for relative fixing adjustment between the faceplate and the casing to compensate for different relative dispositions, in use, between the door and the casing, the abutment member being in the form of a cam having a rotational axis, the cam having respective first and second external surfaces which are at 90° to one another and at different radial distances respectively from said rotational axis, said first external surface extending across the whole length of the cam, said second external surface extending axially for only part of the length of the cam, and the cam being adjustable by slackening a screw on which the cam is carried and which defines said rotational axis.
A door fastening device comprising a bolt movable between a retracted position and an extended position where at least part of the bolt extends, in use, to fasten the door, the bolt being linked to an abutment member, said part of the bolt being movable to its extended position by engagement of a bolt member of a lock or latch of the door with said abutment member, said abutment member being a cam which is adjustable to compensate for different clearances, in use, between the device and the door in its closed position, to ensure sufficient engagement of the abutment member by the bolt member to move said part of the bolt to its extended position, and the cam having a flat, first surface and a second surface on a nose part, wherein the cam is angularly movable about a rotational axis, the first and second surfaces are alternately directed to face outwardly of said opening in the casing by angular adjustment movement of the cam through 90°, and the cam has a flat end surface engaged against a flat side of a link connected to said bolt, the cam being secured by said link by a screw defining a rotational axis of the cam and being releasable to allow angular movement of the cam relative to said link.
A door fastening device comprising a housing, a pair of bolts each movable between a retracted position and an extended position where at least part of the bolt extends, in use, to fasten a door, the bolts being pivotally mounted in the housing about respective first and second pivots, and the bolts being pivotally connected at respective third and fourth pivots spaced from the first and second pivots respectively, to respective opposite ends of a single link, a cam being adjustably mounted on the link, said part of each bolt being movable to its extended position by engagement of a bolt member of a lock or latch of the door with said cam, the cam being mounted on the link for angular adjustment movement relative to the link, about an axis defined by a fixing screw, to compensate for different clearances, in use, between the device and the door in its closed position, to ensure sufficient engagement of the cam by the bolt member to move said part of each bolt to its extended position, the cam having an extended, flat first external surface and a second external surface on a nose part of the cam, the cam being angularly adjustable, in use, through 90° about its axis by release of said fixing screw, between a first extreme position, where the extended, flat, first surface is arranged for engagement by said bolt member to compensate for clearances between the door and a casing, and a second extreme position, where the second surface on the nose part of the cam is arranged for engagement by said bolt member, the first and second surfaces being at different radial differences respectively from the cam axis, the fixing screw being tightened in any selected adjusted position of the cam so that the cam is then held fast with said link and moves therewith, a flat end surface of the cam being engaged against a flat side of the link.
Dependencies are inferred from the claim text.