Static structures (e.g. – buildings) – Framing to receive door – doorjamb – or window sash – Retaining feature between frame and reveal
Reexamination Certificate
1999-09-30
2001-09-25
Cuomo, Peter M. (Department: 3636)
Static structures (e.g., buildings)
Framing to receive door, doorjamb, or window sash
Retaining feature between frame and reveal
C052S217000
Reexamination Certificate
active
06293061
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to jamb installation and for clip systems for installing such jambs.
2. Description of Related Art
Door assemblies are often packaged as a pre-hung door hinged to a prefabricated jamb, and sold as a single unit. The door is usually temporarily secured in position so it does not swing during shipment. The door jamb is ultimately installed in a rough opening that is framed with studs edged by liners. The traditional installation involves placing the door jamb in the rough opening and plumbing it. This step requires great skill since the jamb needs to be adjusted over many degrees of freedom. Also complicating matters, the door is usually left free to swing so that the installer can reach the other side in order to make adjustments or insert wedge-shaped shims.
In U.S. Pat. No. 5,119,609 a flange-like nailing fin is shown secured to the perimeter of a window frame, and described as being useful for door assemblies as well. This nailing fin can be folded from a stored position in front, to a working position along the side. The fin runs the full length and width of the window frame. To achieve adequate attachment strength the fin could be made relatively thick and therefore relatively heavy. The alternative, apparently chosen in this reference, is to make the fin thinner and provide many nail holes. Either approach however is disadvantageous.
In U.S. Pat. No. 4,840,002 an F-shaped clip has one arm embedded in the edge of a door jamb, and another arm acting as a backer for the jamb. The leg of the clip is screwed into the edge of the jamb and into a steel support stud. By screwing into the edge of the jamb and by embedding an arm into that edge, one produces an obstruction that hampers attaching trim around the door jamb. The reference deals with this problem by providing specialized tongue flanges designed to fit into customized bores in the wood trim. Therefore, one cannot use standard door trim.
In U.S. Pat. No. 3,189,137 a J-shaped clip is pressed into an extruded door frame before being nailed to a support wall. This clip has an arm that extends away from the wall and therefore would interfere with standard door trim. This clip is only appropriate with the nonstandard support wall and extruded door frame disclosed in this reference.
See also U.S. Pat. Nos. 4,986,044; 5,692,350; and 5,771,644.
SUMMARY OF THE INVENTION
In accordance with the illustrative embodiments demonstrating features and advantages of the present invention, there is provided a system for installing in a wall a jamb for a door. The jamb has an inward face facing inwardly toward the door and a peripheral face facing away from the door. The system has, in combination, a spaced plurality of clips each having an external arm and a transverse internal arm. The internal arm is adapted for attachment to the peripheral face of the jamb. The external arm is adapted for longitudinally directed, surficial attachment to the wall.
According to another aspect of the invention a method employing clips is provided. The clips each have an external arm and a transverse internal arm for installing in a wall a door jamb. The jamb has an inward face facing inwardly toward the door and a peripheral face facing away from the door. The method includes the step of separately attaching the internal arms of the clips at spaced positions along the peripheral face of the jamb. Another step is positioning the jamb in the wall. The method also includes the step of plumbing the jamb and surficially attaching the external arms of the clips to the wall longitudinally.
By employing a system and method of the foregoing type, installation of door jambs is greatly facilitated, especially for pre-hung doors. In one preferred embodiment, a clip can have a long arm designed for attachment to a jamb, and a short transverse arm designed for attachment to a wall. The preferred clip can be fairly thin and have fairly tight bending radiuses, so that the clip can be mounted flush without obstructing the installation of trim. Preferably, the long arm will be first installed on the jamb before attempting to install the jamb in a rough opening. In some embodiments the long arm can be temporarily secured to the jamb by a prefabricated, pointed tang that was struck from the long arm.
In one preferred clip, the short arm has a mark for orienting a level to determine whether the jamb is plumb. This mark can be made by inking, engraving, or by striking a tab out of the arm. In one highly preferred embodiment, the short arm can swing semaphore-like. Accordingly, the long arm can be secured to the jamb, and the short arm can be swung back to overlap the jamb and door. In this position, the short arm can be held against the edge of the jamb to establish the depth of insertion of the long arm along the jamb before securing the long arm to the jamb. In some instances, the short arm can then be tacked to the door to secure it for transportation.
REFERENCES:
patent: 3189137 (1965-06-01), Harris
patent: 3226781 (1966-01-01), Schnabel
patent: 3636672 (1972-01-01), Fink
patent: 4840002 (1989-06-01), Lovgren
patent: 4986044 (1991-01-01), Funari
patent: 5119609 (1992-06-01), Tait et al.
patent: 5692350 (1997-12-01), Murphy, Jr.
patent: 5771644 (1998-06-01), Kidd
Adams Thomas L.
Cuomo Peter M.
Fisher Michael J.
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