Static structures (e.g. – buildings) – Intersection of wall to floor – ceiling – roof – or another wall – Barrier or module seated on projecting means on vertical...
Reexamination Certificate
2002-01-15
2004-01-20
Chan, Korie (Department: 3632)
Static structures (e.g., buildings)
Intersection of wall to floor, ceiling, roof, or another wall
Barrier or module seated on projecting means on vertical...
C403S360000
Reexamination Certificate
active
06679017
ABSTRACT:
CROSS-REFERENCES TO RELATED APPLICATIONS
Not Applicable
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
Not Applicable
FIELD OF THE INVENTION
The present invention relates to a system of providing a supporting structure, and more particularly a haunch and mating receptacle, to carry horizontally extending structures from vertically extending concrete walls, columns, and the like.
Haunches and other supports have been utilized in the past for carrying horizontally extending structures from vertically extending columns or walls. The haunches that are mounted to receptacles have included metal housings that are encapsulated in concrete. One problem with such systems is that, when loads were placed on top of the haunches, the loads are borne directly by the concrete, yet the loads cause the concrete encapsulating the haunches to spall, pit, chip, deteriorate, or possibly shift.
Other haunch systems also include receptacles that are precast within the column or wall. According to such systems, the receptacle is positioned during the creation of the column or wall, in the concrete during pouring in a concrete mold or form. However, upon the setting of the concrete and the lifting of the column or wall by crane or other equipment, before use of the column or wall in the building construction the haunch has to be welded to the receptacle, which may require difficult, awkward, and potentially hazardous bodily positioning by the welders. In applications in which the building geometry dictates that the receptacle be positioned at the bottom of the concrete form during the pouring of the liquid concrete, such difficulties are exacerbated because later welding to the bottom-positioned receptacle allows hot sparks and welding slag to fall by gravity toward the welder. Additionally, the requirement for tradesmen such as welders on the construction site increases personnel costs, and in turn construction costs.
Further, other haunch systems have required the use of unique, specialty fasteners, by which the support member is attached to the receptacle. Such custom components add complication to the attachment job. Furthermore, worker familiarity with such fasteners is not uniform, nor great, nor reliable. More common fasteners, such as the simple bolt, are not provided by such systems. Accidental damage to or destruction of such fasteners often requires replacement of the entire receptacle unit, because replacement of the unique fasteners may only be had from the custom manufacturer of the component; time of construction is thereby delayed.
Further, other haunches have been created in the mold or concrete form—rather than simply pour a column or wall, the concrete form is configured so as to result in an offset portion that, when the column or wall is erected, support can be rested upon the portion so as to bear loads. Such haunches, however, require more complicated mold construction, often require the destruction of the mold so as to remove the structural member after the concrete sets and the reconstruction of duplicate molds thereafter for additional building members, and increase the time required for construction. Such haunch systems do not provide for the repeatable formation of building columns, walls, and the like.
Finally, other haunch systems have required the use of multiple fasteners to effect attachment of the haunch to the column or wall receptacle. Such multiple fasteners reduce the speed and effectiveness with which the building system may be erected, and multiply the opportunity for error by workers erecting the building system.
Examples of United States patents for devices that are to be used to join separate members in concrete structures may include U.S. Pat. No. 2,163,446, “Insert Anchor”; U.S. Pat. No. 2,079,478, “Concrete Insert”; U.S. Pat. No. 1,929,835, “Concrete Insert”; U.S. Pat. No. 1,933,536, “Concrete Insert”; U.S. Pat. No. 3,513,610, “Concrete Structural Member: Framework Structure And Casting Method”; U.S. Pat. No. 5,711,122, “Supporting Device For Supporting A Floor Form Assembly On Surrounding Walls Of A Structure”; U.S. Pat. No. 4,951,438, “Building Construction”; U.S. Pat. No. 5,311,629, “Deck Replacement System With Improved Haunch Lock”; U.S. Pat. No. 2,724,261, “Precast Column Attaching Means”; U.S. Pat. No. 3,733,757, “Concrete Building Frame Construction”; U.S. Pat. No. 5,826,395, “Concrete Block With Offset Ledge And Installation Guide Means”; and U.S. Pat. No. 3,261,135, “Precast Concrete Beam And Column Joint Construction.”
The present invention relates to an improved system of providing a supporting structure to carry horizontally extending structures from vertically extending concrete walls, columns, and the like.
BRIEF SUMMARY OF THE INVENTION
The present invention solves the problems and drawbacks identified above by providing a new preformed haunch assembly.
Accordingly, it is an object of the present invention to provide a haunch assembly that produces a minimum of deterioration with regard to its load supporting function over long periods of time.
Another object of the present invention is to provide a haunch assembly that, when being used for supporting horizontal structures, provides long term dimensional stability.
A further object of the invention is to provide a haunch assembly that has a smooth load bearing surface that remains dimensionally stable throughout the life of the structure.
A further object of the present invention is to provide a metal load bearing surface to the haunch portion of the load bearing system and enable the system to be encapsulated in cementious material such as concrete, yet to avoid spalling, pitting, chipping, deterioration, or shifting the material and structure of the haunch under load over time.
A further object of the present invention is to enable the use of the haunch system in bottom in form locations of the haunch receptacle during pouring of the concrete column or wall, and the attachment of the haunch to the receptacle after the pouring of the concrete column or wall, yet to avoid thereafter attaching the haunch to the receptacle by welding.
A further object of the present invention is to enable the attachment of the haunch to the receptacle by readily available common fastener devices.
A further object of the present invention is to enable the attachment of the haunch to the receptacle by a single fastening device.
The invention relates to a preformed assembly for providing an offset support from a vertically extending concrete structure. The assembly includes a receptacle that is embedded in a vertically extending column or wall, with an attachable offset support member for projecting out from the receptacle to provide a horizontally extending structural support. The receptacle includes a facing plate having an exposed side and an opposing back side. A plurality of anchors extend from the back side of the facing plate for anchoring the receptacle in the concrete wall structure. At least a first opening and second opening is provided in the face plate for receiving supporting elements carried by the offset support member. The receptacle has a securing member, and in one particular embodiment in the form of a threaded nut, that is carried by the back side of the facing plate.
The attachable offset supporting member may be formed and made in advance off site to the construction, and many such members may be created from a single mold used repeatedly. The offset supporting member includes a housing having an upper surface and a lower surface with an intermediate section provided therebetween. A rigid load bearing plate is carried on the upper surface of the housing. Positioned adjacent the lower end of the housing is a load supporting member that has a protruding end portion that projects beyond a rear bearing side of the housing and extends through one of the openings provided in the receptacle into a recess in the concrete wall. A tensioning member, such as a bolt, extends through an intermediate section of the housing with an end portion projecting beyond the rear bearing side of
Golden Joseph M.
Kirkley Kevin L.
Woodruff, III James F.
Chan Korie
Dority & Manning
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