Static structures (e.g. – buildings) – Relatively yieldable preformed separator
Patent
1995-02-03
1997-07-08
Wood, Wynn E.
Static structures (e.g., buildings)
Relatively yieldable preformed separator
525731, 5239602, 5239603, E04B 1684
Patent
active
056448791
ABSTRACT:
A seismic expansion joint cover includes a floor bridge panel having mutually perpendicular elongated U-shaped bearing receiver guideways adjacent its opposite ends slidably supported by linear bearings affixed to the floor portions on opposite sides of the gap. The receiver guideways are open vertically to allow the floor bridge cover to displace vertically. A cover plate frame defines the boundaries of a floor recess that receives portions of the floor bridge panel in all relative positions of the floor portions as the width of the gap changes. The portion of the floor bridge panel that overlies the gap is covered by a first floor cover plate, and the recess and the remaining portion of the floor bridge plate are covered by a second floor cover plate, which is supported by the cover plate frame and by the portion of the floor bridge panel that it overlies. The second cover plate is resiliently attached to the cover plate frame so that it can lift up and ride over the first cover plate when the gap narrows. The floor bridge panel is resiliently held down so that it cannot be dislodged altogether from the bearing receivers but can lift up and tilt relative to both floor portions. A movable transverse support beam supports the portion of the second cover plate that covers the portion of the recess not occupied by the floor bridge panel and into which the panel can move when the gap narrows.
REFERENCES:
patent: 4517779 (1985-05-01), Dunsworth
patent: 4963056 (1990-10-01), Cihal
patent: 5078529 (1992-01-01), Moulton
patent: 5365713 (1994-11-01), Nicholas et al.
Architectural Plans dated Jun. 27, 1994, San Bernadino County (CA) Medical Center Replacement Project; Perkins & Will.
Barr Roger W.
Shreiner Thomas A.
Williams Howard
Construction Specialties, Inc.
Wood Wynn E.
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