Fire-rated elevator door frame and transom flush with door
OwnerJashan Deshan Eison, Mark Gabriel Hamilton +2inventors
InventorsJashan Deshan Eison, Mark Gabriel Hamilton, William Theodore Sillman, Leo Joseph Tomperi
Life of this patent
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Abstract
Some examples provide a fire-rated elevator door frame assembly with a flush transom. The transom includes a transom assembly. A fire-rated partition sits behind the transom on the hoistway side of the elevator doors. Architectural cladding can be applied to the front of the transom and to the front of the elevator doors giving the appearance that the flush transom extends high above the elevator doors.
Claims12
A transom assembly configured to be positioned between an elevator hoistway and an elevator corridor, comprising:
- a transom having a hoistway side and a corridor side, the transom comprising:
- a front panel with a front face, a top surface, and interior lock ribs;
- a rear panel with a rear face and Z-ribs, wherein the lock ribs of the front panel
- and the Z-ribs of the rear panel secure the front panel to the rear panel;
- a heat-shielding panel attached to the rear face of the transom rear panel by a horizontal z-bar retainer and at least one vertical z-bar retainer;
- a support rail having
- a top flange with a top surface,
- a vertical stabilizer segment,
- a horizontal support segment, and
- a bottom flange,
- wherein the top flange of the support rail is secured to the top surface of the front panel of the transom and the support rail extends away from the hoistway side of the transom in a direction toward the elevator hoistway;
- a retainer bar secured to the support rail, the retainer bar having a top flange, a bottom flange, and a vertical stabilizer segment extending between the top flange and the bottom flange;
- an elongated horizontal enclosure pocket configured to receive a rear partition, the enclosure pocket formed on the hoistway side of the transom between the vertical stabilizer segment of the support rail and the vertical stabilizer segment of the retainer bar.
A fire-rated shaft wall assembly having a hoistway side and a corridor side, the fire-rated shaft wall assembly comprising:
- a fire-rated rear partition;
- a fire-rated front wall construction comprising a corridor partition and a shaft liner;
- a perpendicular fire-rated shaft wall assembly comprising a side partition, a perpendicular shaft liner, and a fire-rated filler sandwiched between the side partition and the perpendicular shaft liner, wherein the perpendicular shaft wall assembly comprises a hoistway-facing end and an opposite, corridor-facing end;
- wherein, in combination with the rear partition, the perpendicular shaft wall assembly forms a portion of a continuous fire-rated barrier;
- wherein the corridor-facing end of the perpendicular shaft wall assembly is interlocked with the front wall construction via the side partition perpendicularly intersecting and contacting the corridor partition, the shaft liner, and the rear partition;
- wherein the hoistway-facing end of the perpendicular shaft wall assembly is secured to the rear partition;
- wherein the perpendicular shaft liner intersects the shaft liner and is also offset from and perpendicular to the rear partition;
- and
- wherein an elevator door frame is at least partially surrounded by the continuous fire-rated barrier.
A method of assembling an offset fire-rated elevator transom configured to be positioned between an elevator hoistway and an elevator corridor, wherein the offset fire-rated transom has a hoistway side and a corridor side, comprising:
- assembling a transom assembly by:
- securing a support rail to a top surface of a transom, the transom having a heat-shielding panel, wherein the support rail extends away from the hoistway side of the transom in the direction of the elevator hoistway;
- and
- releasably securing a retainer bar to the support rail;
- wherein the support rail has a vertical stabilizer segment and the retainer bar has a vertical stabilizer segment;
- constructing an elevator door assembly by inserting the transom assembly into an elevator door frame;
- removing the retainer bar from the support rail;
- inserting a rear partition onto the support rail, wherein the rear partition is positioned on the hoistway side of the transom;
- after inserting the rear partition, putting the retainer bar back into place on the support rail, whereby the rear partition is secured in place in an enclosure pocket formed between the vertical stabilizer segment of the support rail and the vertical stabilizer segment of the retainer bar;
- and
- securing the rear partition to a perpendicular shaft wall assembly with a barrier plate on each side end of a rear face of the rear partition.
Dependencies are inferred from the claim text.