Adjustable doorframe

Claim 1

A nonseparable doorframe, adjustable through a wide range of throat dimensions for frictional engagement with the outer facings of an untrimmed wall opening, comprising first and second elongated portions arranged to be transversely telescoping along their lengths with respect to each other and an adjustable fastening means connected to said first and second portions, said fastening means being structured so as to prevent total separation of said two elongated portions; said first elongated portion comprising a pair of U-shaped sections integrally joined along a common edge; a first one of said U-shaped sections having a flange extending toward and adapted to frictionally engage one of said facings; the other one of said U-shaped sections having a base web and a pair of parallel flanges, each of said parallel flanges extending outwardly from said base web toward said second elongated portion; a first one of said flanges forming a stop surface for receiving the forward sidewall of a door and having an access aperture therethrough; the other one of said flanges terminating in close proximity to a part of said second elongated portion; an apertured support plate secured to an inner face of said other of said pair of flanges and being adapted to support a rotatable remote end of an elongated threaded bolt; a bracket member secured to said first elongated portion; said bracket member having a flange extending parallel to and intermediate said pair of parallel flanges and having an aperture therein to receive and support an adjustable fastening means; said second elongated portion having at least one flange extending parallel to said flange of said bracket and lying between said bracket flange and said second flange; said second elongated portion further having a second flange extending toward and adapt to frictionally engage the other facing of said untrimmed wall; said one flange of said second elongated portion having internally threaded means adapted to surroundingly grasp an elongated threaded bolt; said access aperture of said first flange, said aperture of said bracket flange, said internally threaded means and said aperture of said support plate all being in alignment; an elongated threaded bolt extending through said bracket flange in nonthreaded engagement therewith and being connected to said threaded means of said second elongated portion to adjustably secure said two elongated portions in telescoping relationship with respect to each other; said elongated bolt further entering said apertured support plate to be supported thereby; locking means connected to said bolt and cooperating with said bracket flange to prevent axial movement of and removal of said bolt from said bracket flange; said bracket flange and said apertured support plate being adapted to permit rotational adjustment of said fastening means while acting as stop means to prevent separation of said second elongated portion from said bolt; and said first one of U-shaped sections being positioned to overlap and conceal said bracket member, said fastening means, said support plate and part of said second elongated member.