Adjustable door frame
AssigneeGreensteel Industries Ltd.
InventorHarvey E. Rogers
Life of this patent
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Abstract
An adjustable door frame has adjustable width jambs and header. Each of the frame elements consists of two elongated components held together with interengaging rails and channels on the two components. In use, the frame elements are adjusted to the desired width and are locked in place with self tapping screws through the rails and channels. This allows the elements to be installed in a door opening in the same way as a fixed width door frame and without the use of screws through the door casing.
Claims11
A door frame of the type comprising two jamb elements, a header element independent from the jamb elements and means for connecting the jamb elements and the header element into a substantially rigid frame, the frame being an adjustable width frame in which each element comprises first and second elongate components with respective overlapping flanges, each element including a guide means comprising plural elongate rails secured to an inner side of the flange of the first component, plural elongate channels secured to an inner side of the flange of the second component and engaging slidably over the respective rails for free sliding movement therealong, the rails and the channels being oriented widthwise of the frame for relative movement thereof in response to adjustment of the width of the frame element, and fastener elements extending through the respective channels to engage the associated rails securing the channels to the rails to prevent relative widthwise sliding movement of the channels and the rails whereby the width of each element may be fixed before installation of the frame.
A door frame comprising two jambs and a header, means for connecting the jambs to opposite ends of the header to from a substantially rigid frame, each jamb and the header comprising:
- two elongate components with respective overlying flanges;
- a plurality of stiffener means secured to inner sides of the overlapping flanges of the two components for maintaining the flanges parallel to one another, each stiffener means comprising:
- a transversely oriented channel secured to one of the components;
- a transversely oriented rail secured to the other of the components, the rail being engaged slidably in the channel;
- and
- fastener elements extending through the respective channels into the associated rails securing the channel to the rail to prevent sliding movement of the rail along the channel, the fastener means being accessible solely from the inner side of the component.
Dependencies are inferred from the claim text.