Static structures (e.g. – buildings) – Framing to receive door – doorjamb – or window sash – Architrave; i.e. – finish strip on floor – ceiling – or wall...
Patent
1978-05-15
1979-09-04
Bell, J. Karl
Static structures (e.g., buildings)
Framing to receive door, doorjamb, or window sash
Architrave; i.e., finish strip on floor, ceiling, or wall...
49504, E06B 104
Patent
active
041663462
ABSTRACT:
Prefabricated door assembly for installation in a roughed-in door frame, the assembly including a pair of vertically extending door jambs having inter-engaging casings and a header unit spanning the upper ends of the door jambs. The header unit includes a header board having interengaging horizontal casings.The header board also includes, adjacent each of its ends, a transverse recess designed to receive the upper end of each of the jambs, the recess having a slightly outward inclination to place a constant tension on the jambs as they engage the roughed-in door frame. The assembly may also include means for placing a downward pressure on the header board to maintain integrity of the joints.
REFERENCES:
patent: 3040390 (1962-06-01), Carlton
patent: 3239978 (1966-03-01), Parker
patent: 3338008 (1967-08-01), Sklar
patent: 3429076 (1969-02-01), Fortsch et al.
Bell J. Karl
Horton Paul F.
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