Static structures (e.g. – buildings) – Including component designed to receive a disparate article... – Mounted for movement
Patent
1983-04-25
1985-07-23
Kelly, Donald G.
Static structures (e.g., buildings)
Including component designed to receive a disparate article...
Mounted for movement
52212, 52215, 49504, 109 77, 187 1R, B66B 900
Patent
active
045301891
ABSTRACT:
A fire resistant, elevator hatchway door entrance for wall openings up to and including 10 feet in height, including first and second side jambs and a head jamb. Each side jamb includes a pair of upstanding, oppositely facing, metallic channel members dimensioned and coupled together to define both a structural box beam and a pocket for receiving the wall which defines the opening. The bight and one leg portion of one channel member define the jamb depth and reveal, respectively, of the side jamb, and the bight of the other channel member receives and shields an asociated J-strut at the wall-entrance interface. The remaining leg portion of the one channel member may cooperate with a member disposed on the trailing edge of the associated door panel to define a flame shield and a mechanical limit for preventing undue separation of the door panel from the side jamb.
REFERENCES:
patent: 1817346 (1931-08-01), Campbell
patent: 3535837 (1970-10-01), Atkinson et al.
patent: 4226066 (1980-10-01), Persson
Kelly Donald G.
Lackley Donald R.
Slack Naoko N.
Westinghouse Electric Corp.
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