Stair Patents (Class 249/14)
  • Patent number: 11725403
    Abstract: The disclosure provides for pool step forms and related methods for forming steps in a pool formed by wall panels. The step forms may include a wall panel insert configured for insertion between adjacent pool wall panels. The step forms may include one or more step form brace configured to couple with the wall panel insert and, thereby, the wall panels. The step forms may include riser forms that from riser portions of the stairs when the step forms and riser forms are coupled. The pool stair forms may be filled with filling material to form tread portions of the stairs. The pool stair forms may include liner support members coupled to the step form braces and/or the wall panels that facilitate the coupling of a liner to the stairs formed by the pool stair forms and filling material.
    Type: Grant
    Filed: October 4, 2021
    Date of Patent: August 15, 2023
    Assignee: Imperial Pools, Inc.
    Inventor: John V. Maiuccoro
  • Patent number: 11149449
    Abstract: The disclosure provides for pool step forms and related methods for forming steps in a pool formed by wall panels. The step forms may include a wall panel insert configured for insertion between adjacent pool wall panels. The step forms may include one or more step form brace configured to couple with the wall panel insert and, thereby, the wall panels. The step forms may include riser forms that from riser portions of the stairs when the step forms and riser forms are coupled. The pool stair forms may be filled with filling material to form tread portions of the stairs. The pool stair forms may include liner support members coupled to the step form braces and/or the wall panels that facilitate the coupling of a liner to the stairs formed by the pool stair forms and filling material.
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: October 19, 2021
    Inventor: John V. Maiuccoro
  • Patent number: 11034054
    Abstract: A prefabricated stair modular assembly mold comprises a base, a step standard module, an upside module of a lower platform, an underside rotating module of a lower platform, an upside module of an upper platform, an underside rotating module of an upper platform, an underside common module, and an underside adjustment modules. Prefabricated stair molds of different dimensions are formed by means of locating holes provided in the assembling modules, and are then fixed by means of sliding holes at two ends. Further disclosed is a mounting method for said assembly mold. Said assembly mold has high positioning accuracy, and small accumulated error, improving the mounting efficiency of the prefabricated staircase mold.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: June 15, 2021
    Assignees: China University of Mining and Technology, China Mining & Civil New Material Science and Technology Ltd., BOXIA MINING TECHNOLOGY LTD.
    Inventors: Hong Chang, Junwu Xia, Xiaofang Xiang, Xia Bai
  • Patent number: 10731363
    Abstract: The disclosure provides for pool step forms and related methods for forming steps in a pool formed by wall panels. The step forms may include a wall panel insert configured for insertion between adjacent pool wall panels. The step forms may include one or more step form brace configured to couple with the wall panel insert and, thereby, the wall panels. The step forms may include riser forms that from riser portions of the stairs when the step forms and riser forms are coupled. The pool stair forms may be filled with filling material to form tread portions of the stairs. The pool stair forms may include liner support members coupled to the step form braces and/or the wall panels that facilitate the coupling of a liner to the stairs formed by the pool stair forms and filling material.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: August 4, 2020
    Assignee: Imperial Pools, Inc.
    Inventor: John V. Maiuccoro
  • Patent number: 10500760
    Abstract: An apparatus and method for precision forming a precast concrete flight of stairs is disclosed and where precision cut form components provide plural tread supports, plural sideboards, plural tread/riser combinations and a center tread support that upon assembly, the form components, automatically square and align treads and risers with upper and lower landings for installation to provide access between vertically spaced apart floors of a structure.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: December 10, 2019
    Inventor: Richard J. Eggleston, II
  • Patent number: 10428538
    Abstract: The disclosure provides for pool step forms and related methods for forming steps in a pool formed by wall panels. The step forms may include a wall panel insert configured for insertion between adjacent pool wall panels. The step forms may include one or more step form brace configured to couple with the wall panel insert and, thereby, the wall panels. The step forms may include riser forms that from riser portions of the stairs when the step forms and riser forms are coupled. The pool stair forms may be filled with filling material to form tread portions of the stairs. The pool stair forms may include liner support members coupled to the step form braces and/or the wall panels that facilitate the coupling of a liner to the stairs formed by the pool stair forms and filling material.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: October 1, 2019
    Assignee: Imperial Pools, Inc.
    Inventor: John V. Maiuccoro
  • Patent number: 10288405
    Abstract: An alignment gauge includes a generally u-shaped main body and an alignment member extending therefrom. The alignment gauge is configured to be positioned on the frame of a cabinet during installation of one or more attached components, such as attachment of a pair of doors to a refrigerator cabinet. Specifically, the alignment gauge may be positioned so that the alignment member establishes a proper spacing for the attached components.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: May 14, 2019
    Assignee: Whirlpool Corporation
    Inventors: Pranav, Manjur Tamboli
  • Patent number: 9869102
    Abstract: The disclosure provides for pool step forms and related methods for forming steps in a pool formed by wall panels. The step forms may include a wall panel insert configured for insertion between adjacent pool wall panels. The step forms may include one or more step form brace configured to couple with the wall panel insert and, thereby, the wall panels. The step forms may include riser forms that from riser portions of the stairs when the step forms and riser forms are coupled. The pool stair forms may be filled with filling material to form tread portions of the stairs. The pool stair forms may include liner support members coupled to the step form braces and/or the wall panels that facilitate the coupling of a liner to the stairs formed by the pool stair forms and filling material.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: January 16, 2018
    Assignee: Imperial Pools, Inc.
    Inventor: John V. Maiuccoro
  • Patent number: 8865034
    Abstract: The present invention provides a system to build formworks for building concrete stairs which is durable and reusable, which can be rapidly mounted and dismantled on site and which is adjustable to a variety of flight of stairs having different widths, rises and pitches. The system comprises (a) at least one side plate which can be releasably secured to a supporting structure on a footing; the side plate defining a side of at least one stair and defining the depth of a tread of said stair; (b) at least one riser member for defining the rise of the at least one stair; the riser member being complementary to the side plate; and (c) means for fastening the riser member to the side plate; wherein the side plate and riser member are reusable.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: October 21, 2014
    Inventor: Stephane Poulin
  • Publication number: 20140123590
    Abstract: The disclosure provides for pool step forms and related methods for forming steps in a pool formed by wall panels. The step forms may include a wall panel insert configured for insertion between adjacent pool wall panels. The step forms may include one or more step form brace configured to couple with the wall panel insert and, thereby, the wall panels. The step forms may include riser forms that from riser portions of the stairs when the step forms and riser forms are coupled. The pool stair forms may be filled with filling material to form tread portions of the stairs. The pool stair forms may include liner support members coupled to the step form braces and/or the wall panels that facilitate the coupling of a liner to the stairs formed by the pool stair forms and filling material.
    Type: Application
    Filed: October 31, 2013
    Publication date: May 8, 2014
    Applicant: Imperial Pools, Inc.
    Inventor: John V. MAIUCCORO
  • Publication number: 20140054441
    Abstract: An apparatus for forming steps within a concrete stairway, wherein each step has a rise and a run. The apparatus includes a stringer rail, one or more riser brackets and a plurality of fasteners. The stringer rail has a lengthwise-extending channel. Each riser bracket has a panel leg and a support leg, wherein one end of the support leg is attached to panel leg. The fasteners are selectively slidable within the rail channel. One of the fasteners attaches the panel leg to the rail and another of the fasteners attaches the support leg to the rail. Each fastener is configurable in a first mode where the fastener is slidably attached to the rail. Each fastener is configurable in a second mode where the fastener is fixedly attached to the rail.
    Type: Application
    Filed: February 15, 2013
    Publication date: February 27, 2014
    Applicant: D'Amato Construction Corporation, Inc.
    Inventor: D'Amato Construction Corporation, Inc.
  • Publication number: 20140021643
    Abstract: The present invention provides a system to build formworks for building concrete stairs which is durable and reusable, which can be rapidly mounted and dismantled on site and which is adjustable to a variety of flight of stairs having different widths, rises and pitches. The system comprises (a) at least one side plate which can be releasably secured to a supporting structure on a footing; the side plate defining a side of at least one stair and defining the depth of a tread of said stair; (b) at least one riser member for defining the rise of the at least one stair; the riser member being complementary to the side plate; and (c) means for fastening the riser member to the side plate; wherein the side plate and riser member are reusable.
    Type: Application
    Filed: January 29, 2013
    Publication date: January 23, 2014
    Inventor: Stephane Poulin
  • Patent number: 8616518
    Abstract: A stairway forming system includes a plurality of stacked, elongate stair riser form carriers, the carriers being longitudinally displaceable relative to one another. An anchoring unit anchors at least a lowermost riser form carrier in position relative to a substrate. A positioning assembly is attached to at least one of the riser form carriers and cooperates with the remaining riser form carriers for displacing the carriers in unison relative to one other to adopt a staggered operative configuration approximating an angle of the stairway to be formed.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: December 31, 2013
    Assignee: SRB Construction Technologies Pty. Ltd.
    Inventor: Robert Sladojevic
  • Patent number: 8376309
    Abstract: An apparatus for forming steps within a concrete stairway, wherein each step has a rise and a run. The apparatus includes a stringer rail, one or more riser brackets and a plurality of fasteners. The stringer rail has a lengthwise-extending channel. Each riser bracket has a panel leg and a support leg, wherein one end of the support leg is attached to panel leg. The fasteners are selectively slidable within the rail channel. One of the fasteners attaches the panel leg to the rail and another of the fasteners attaches the support leg to the rail. Each fastener is configurable in a first mode where the fastener is slidably attached to the rail. Each fastener is configurable in a second mode where the fastener is fixedly attached to the rail.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: February 19, 2013
    Assignee: D'Amato Construction Corporation, Inc.
    Inventor: Jere Merriam
  • Patent number: 8262055
    Abstract: The invention relates to an adjustable stair forming apparatus, adapted to form a flight of stairs of a settable material. The flight of stairs including a series of treads interconnected by intermediate risers. The apparatus comprises, a frame to support a series of forming units provide a forming surface. Each forming unit, includes a tread defining formwork that includes a rectangular shaped tread forming surface, slidably and pivotally mounted to the frame from or toward a first major edge of the tread forming surface. The forming unit also has a riser defining formwork that includes a rectangular shaped riser forming surface with a first major edge adjustably mounted from or toward the opposite major edge of the tread forming surface. The riser forming surface at least in part co-extending with the tread forming surface in a stair width direction.
    Type: Grant
    Filed: March 12, 2009
    Date of Patent: September 11, 2012
    Assignee: Any Step Technology Limited
    Inventors: Anthony William Costello, Trevor James Anderson, John Owen Gardner
  • Publication number: 20120167521
    Abstract: The invention is directed to a prefabricated stair formwork structure (1) for making a stair flight, comprising: a first space (A) for containing a concrete cast defined by two longitudinal beam elements (11, 12), arranged parallel to one another, and two transversal beam elements (13,14), also arranged parallel to one another and each coupled with both said longitudinal beam elements (11, 12) at their respective ends; a plurality of shaped elements (15) each defining a second containment space (S) for a concrete cast of corresponding steps, said shaped elements (15) being fixed in succession above said at least two longitudinal beam elements (11, 12); an element (16) for closing the bottom of the formwork structure (1), fixed to said longitudinal and/or transversal beam elements on the opposite side with respect to said shaped elements (15); and a reinforcement structure (C) of the concrete housed in said first containment space (A).
    Type: Application
    Filed: June 22, 2009
    Publication date: July 5, 2012
    Applicant: PLASTEDIL S.A.
    Inventor: Piero Cretti
  • Patent number: 8112965
    Abstract: The assembly and method of the present invention is used for forming a monolithic tiered concrete slab or stairway. The assembly includes a plurality of foam blocks positioned adjacent one another and in a plurality of rows on a support base. The upper surfaces of the blocks are sloped and form a continuous included plane from the front row to the back row. Interface elements are attached to the upper surfaces so as to cover the joints between adjacent blocks. Riser ties are mounted on the interface elements, with riser face forms attached to the ties. After the blocks are positioned and the interface elements with riser ties and face forms assembled, concrete is poured under the blocks so as to cover the upper surface, the interface elements, and the ties, thereby forming a monolithic tiered series of risers and treads.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: February 14, 2012
    Inventor: Steve Chmelar
  • Publication number: 20110240831
    Abstract: An apparatus for forming steps within a concrete stairway, wherein each step has a rise and a run. The apparatus includes a stringer rail, one or more riser brackets and a plurality of fasteners. The stringer rail has a lengthwise-extending channel. Each riser bracket has a panel leg and a support leg, wherein one end of the support leg is attached to panel leg. The fasteners are selectively slidable within the rail channel. One of the fasteners attaches the panel leg to the rail and another of the fasteners attaches the support leg to the rail. Each fastener is configurable in a first mode where the fastener is slidably attached to the rail. Each fastener is configurable in a second mode where the fastener is fixedly attached to the rail.
    Type: Application
    Filed: August 27, 2010
    Publication date: October 6, 2011
    Applicant: D'AMATO CONSTRUCTION CORPORATION, INC.
    Inventor: Jere Merriam
  • Patent number: 7976746
    Abstract: A system for establishing modular concrete truss stairway during construction of a multi-floor building having concrete decks provides two pre-cast concrete stringers of plural stairsteps and a cast-in-place intermediate landing therebetween forming a stair truss structurally attached to and communicating between two vertically spaced adjacent concrete decks. The intermediate concrete landing is carried between the adjacent vertically spaced decks by adjacent end portions of the stringers. Internal reinforcement in the concrete decks, in each stringer and in the intermediate landing is operatively interconnected to provide structural rigidity to the stair truss. Concurrent pouring of concrete for the upper deck, the intermediate landing and a blocked out area defined in a lower deck structurally attaches the stair truss therebetween providing an operative stairway upon hardening of the concrete.
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: July 12, 2011
    Inventor: Guy A. Conservano
  • Publication number: 20110078962
    Abstract: A permanent assembly and method for creating and forming swimming pool user support structures within a swimming pool includes one or more of a vertical elongated support having a pool wall flange extending laterally from the vertical support and fixedly attached to one of a pool wall or a support brace, one or more of a lateral brace having a longitudinal brace body, a vertical support end connected to the vertical elongated support and a riser support end wherein the lateral brace extends laterally from the pool wall, and a plurality of support structure risers, each having a riser inside surface, a smooth riser outside surface, a riser first end, and a riser second end, the riser first end fixedly attached to the riser support end of the lateral brace and the riser second end fixedly attached to one of a riser first end of an adjacent support structure riser, the pool wall or a riser outside surface of another support structure riser where the one or more of the vertical elongated support, the one or more
    Type: Application
    Filed: October 6, 2009
    Publication date: April 7, 2011
    Inventor: Roger Gravel
  • Publication number: 20090266970
    Abstract: A stairway forming system (10) includes a plurality of stacked, elongate stair riser form carriers (12-20), the carriers (12-20) being longitudinally displaceable relative to one another. An anchoring unit (24) anchors at least a lowermost riser form carrier (12) in position relative to a substrate (26). A positioning assembly (28) is attached to at least one of the riser form carriers (12-20) and cooperates with the remaining riser form carriers for displacing the carriers (14-20) in unison relative to one other to adopt a staggered operative configuration approximating an angle of the stairway to be formed.
    Type: Application
    Filed: October 31, 2007
    Publication date: October 29, 2009
    Applicant: SRB Construction Technologies Pty Ltd.
    Inventor: Robert Sladojevic
  • Publication number: 20090266969
    Abstract: The invention relates to an adjustable stair forming apparatus, adapted to form a flight of stairs of a settable material. The flight of stairs including a series of treads interconnected by intermediate risers. The apparatus comprises, a frame to support a series of forming units provide a forming surface. Each forming unit, includes a tread defining formwork that includes a rectangular shaped tread forming surface, slidably and pivotally mounted to the frame from or toward a first major edge of the tread forming surface. The forming unit also has a riser defining formwork that includes a rectangular shaped riser forming surface with a first major edge adjustably mounted from or toward the opposite major edge of the tread forming surface. The riser forming surface at least in part co-extending with the tread forming surface in a stair width direction.
    Type: Application
    Filed: March 12, 2009
    Publication date: October 29, 2009
    Inventors: Anthony William Costello, Trevor James Anderson, John Owen Gardner
  • Publication number: 20080263970
    Abstract: The assembly and method of the present invention is used for forming a monolithic tiered concrete slab or stairway. The assembly includes a plurality of foam blocks positioned adjacent one another and in a plurality of rows on a support base. The upper surfaces of the blocks are sloped and form a continuous included plane from the front row to the back row. Interface elements are attached to the upper surfaces so as to cover the joints between adjacent blocks. Riser ties are mounted on the interface elements, with riser face forms attached to the ties. After the blocks are positioned and the interface elements with riser ties and face forms assembled, concrete is poured under the blocks so as to cover the upper surface, the interface elements, and the ties, thereby forming a monolithic tiered series of risers and treads.
    Type: Application
    Filed: April 30, 2008
    Publication date: October 30, 2008
    Inventor: STEVE CHMELAR
  • Publication number: 20080203269
    Abstract: A magnetic step pin assembly for a concrete structure including an elongated plate having at least one magnet installed on a first side of the plate and at least two step pin pegs extending from a second side of the plate, and a plurality of cam pins for insertion into holes formed by the at least two step pin pegs, thereby forming a ladder for the concrete structure.
    Type: Application
    Filed: February 20, 2008
    Publication date: August 28, 2008
    Applicant: JVI MAGNETICS, INC.
    Inventors: David S. Jablonsky, Ted Kegeris
  • Publication number: 20080115429
    Abstract: Pre-cast concrete stairs, molds for making pre-cast concrete stairs, and methods of casting pre-cast concrete stairs are provided. The stair is constructed with two beams that are cast with the stair steps as an integral monolithic structure. One of the beams (integral down edge beam) projects below the steps on one side, and the other (integral up edge beam) projects above the steps on the other side. The weight of the stairs and the weight of traffic on the steps creates compression on the tops of the integral down edge beam and integral up edge beam, and tension on the bottoms of the integral down edge beam and integral up edge beam, which enhances the combined strength of the beams. The asymmetric orientation of the members creates a stronger cross-section than if the beams were in the same plane horizontally, allowing greater load handing capability. Lightweight steps are suspended between the two beams.
    Type: Application
    Filed: November 21, 2007
    Publication date: May 22, 2008
    Applicant: ZMZ PRECAST INC.
    Inventors: Mark E. Zirbel, Bryant A. Zavitz
  • Patent number: 7185875
    Abstract: An adjustable template apparatus for setting up risers in manufacturing concrete steps for enhancing the speed of set up for risers with regard to level and spacing. The adjustable template apparatus for setting up risers in manufacturing concrete steps includes a horizontal member having a first end and a second end; a first vertical member operationally coupled to the first end of the horizontal member, extending downwardly from the horizontal member, and is used to selectively abut a lower most riser; a riser positioning member slideably coupled to an underside of the horizontal member and positionable along a length of the horizontal member for selectively engaging a second riser; and a second vertical member slideably coupled to the horizontal member and positionable along a length of the horizontal member, the second vertical member extends upwardly from the horizontal member and is user for selectively abutting a third riser.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: March 6, 2007
    Inventor: Samuel Jarrett
  • Patent number: 7082725
    Abstract: In recent decades within the building industry, there has been a trend toward mass production of building components. The trend has included every part of structures except for the concrete slab the building is built on. The “Threshold Tray and Clip System” uses mass-produced products to be applied to construction of slabs and foundations, allowing sill steps to be built in rough openings with pre-fabricated form parts. The forms remain in the concrete and are permanent. This means that consistent results can be expected. Other mass-produced products, such as door systems, will fit into rough openings more accurately. Over-all quality of the structure will be increased.
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: August 1, 2006
    Inventor: James Edward Visser
  • Patent number: 6959521
    Abstract: A concrete basement stairway is created, by positioning a stairway form 1 between a first pair of concrete receiving foundation channels 9 and a second pair of concrete receiving foundation channels 9a of any size foundation, the stairway form including a single piece stairstep panel 2, coupled by pivotable latching members, between a pair of parallel inner stairway side panels 6 and 6a, the inner stairway side panels configured to permit concrete to flow between the two pairs of concrete receiving foundation channels and spaces beneath the stairstep panel, in a manner forming a series of solidified concrete steps unified, and thus leak proof, with concrete solidified within the concrete receiving foundation channels. The stairway is formed simultaneously with the foundation so that a builder can complete the job without awaiting shipment of a pre-cast stairway requiring returning to the site. Reusable lightweight aluminum forms are employed for easy handling.
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: November 1, 2005
    Inventor: Alan R. Brooks
  • Patent number: 6869553
    Abstract: A method of manufacturing a prefabricated precast riser module, where the required forms that are used in casting the modules are reusable and need not to be transported to the construction site. Each precast riser assembly is finished having brick facings. Brick facings are applied to the vertical surfaces of the precast riser. They are: the commonly used stretcher course and row lock course. A Rebar reinforcing rod is imbedded in the concrete mixture, which will strengthen the assembly to prevent damage when being transported on site. This added strengthening would also allow for minor misalignments during the assembly phase. These novel concrete brick faced modules can be assembled by inexperienced craftsmen, and when completed, will give the appearance of a handcrafted riser that was constructed by professional masonry craftsmen using brick and sandstone.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: March 22, 2005
    Inventor: John D. Gentile
  • Patent number: 6860460
    Abstract: Construction forms for making concrete forms for making stairs have a bracket with a stringer mount face and a riser mount face. Each mount face has mounting structure located thereon. A longitudinally extending stringer stop extends away from and perpendicular to a stringer mount plane in a first direction, the stringer stop having a surface adapted to abut a bottom of a stringer. A laterally extending first riser stop has a first riser abutting surface. The first riser stop extends laterally away from the riser mount face in a second direction and is longitudinally spaced a first distance from the stringier stop. The second direction is perpendicular to the first direction. The first riser abutting surface is adapted to abut a top of a riser. Use of the bracket in an assembly with a stringer and a riser are also disclosed.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: March 1, 2005
    Inventor: Leroy J. Rellergert
  • Publication number: 20040104331
    Abstract: The present invention relates to construction forms and more specifically to a device for making concrete forms for making stairs.
    Type: Application
    Filed: December 3, 2002
    Publication date: June 3, 2004
    Inventor: Leroy J. Rellergert
  • Patent number: 6634145
    Abstract: A modular stone stair system using a plurality of modules in the form of stringers, risers, treads and landings in standardized thicknesses and widths. The risers, landings (if any) and treads have different widths dependent upon the width of the stairs desired, with the treads and landing (if any) being of the full width of the stair, and the risers being a modular width such that each tread or landing is underlain by a plurality of risers. Each level of the stair has a plurality of stringers, abutting the back of the tread and riser and running to the back of the stair. The stringers vary in depth depending upon how many steps are to be present, such that each level, except the bottom, overlaps the tread and riser of the next lower level by a fixed amount. The system can easily be assembled by two people, using a shovel, a level, and a ruler, giving the homeowner or contractor the option of choosing threshold heights, widths, and landings with varying depths.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: October 21, 2003
    Inventor: Ormsby Dolph
  • Publication number: 20030047663
    Abstract: A step form mold apparatus includes a support having an upper portion, a lower portion, and a middle portion disposed between, and interconnecting, the upper and lower portions, with the upper portion including a first mold mounting surface extending upwardly from the middle portion, and a first molding form being secured to the support such that the inner surface of the first molding form is disposed in face-to-face relationship with the first mold mounting surface, the outer surface of the first molding form being uneven so as to impart a textured appearance upon materials molded thereagainst.
    Type: Application
    Filed: June 6, 2002
    Publication date: March 13, 2003
    Inventor: Michael Hancock
  • Patent number: 5205942
    Abstract: A formwork for concrete including a lipped channel edge form having a lipped cavity and an edge form supporting bracket. The supporting bracket having a base member with an aperture therein and an upright member which is perpendicular to the base member. The upright member includes an upper and lower slot defined between forward and rearward lip engaging lugs for securing the bracket to the edge form by inserting the bracket into the lipped cavity and twisting until a secure connection is made.
    Type: Grant
    Filed: June 18, 1990
    Date of Patent: April 27, 1993
    Inventor: Leonard R. Fitzgerald
  • Patent number: 5194165
    Abstract: A finishing cap for concrete formwork is described herein for providing smooth finished concrete joints and corners while reducing the time, labor, expense, and expertise required to make such a joint. The finishing cap provides two non-parallel edges forming an angle, wherein the concrete formwork is fitted into the angle so provided. The angle between the edges of the finishing cap is provided so as to be somewhat smaller than the final desired angle of the finished concrete joint. A pinching action is created between the edges of the finishing cap and the formwork, and this pinching action prevents stones and concrete from entering the joint and roughing up the final finished joint. After the concrete is poured, smoothed and set, the finishing cap may be easily removed and a smooth finished corner is produced. The invention is described in relation to concrete formwork for stairs and walls.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: March 16, 1993
    Inventor: Dennis Rattigan
  • Patent number: 5186874
    Abstract: A method of constructing arcuate cement stairs in a pool includes (a) attaching a first arcuate form having a first form radius to the wall of the pool; (b) attaching a second arcuate form having a second form radius smaller than the first form radius to the wall in a plane above the first arcuate form; (c) attaching to the wall of the pool, inwardly of the first form, a first arcuate support band having a radius generally corresponding to the first form radius, the first band remaining in place when the first form is removed, and attaching to the wall of the pool, inwardly of the second form, a second arcuate support band having a radius generally corresponding to the second form radius, the second band remaining in place when the second form is removed; (d) pouring a curable cement-containing material into the space between the forms and the wall to form stairs; and (e) removing the arcuate forms to provide the stairs.
    Type: Grant
    Filed: May 15, 1990
    Date of Patent: February 16, 1993
    Inventor: Raymond McLaughlin
  • Patent number: 5133530
    Abstract: An adjustable mold for casting stairways of concrete enables the total length of a stairway and also the dimension of the separate steps to be adjusted. The mold includes a longitudinal horizontal frame supporting two identical parallel articulated arm systems positioned scissor-like and being linked together at intersection points of arms of the system along a longitudinal center axis thereof. At oppositely located and linked outer ends of the arms are provided pivotable supports for a number of step units, each of which includes an upstep and an instep. An inner edge of each instep substantially by its own weight rest against the upstep of an adjacent step unit. The total length of the articulated arm link system may be adjusted, thereby simultaneously adjusting the distance between adjacent step units. Also, the angular position of the step units relative to the support frame can be adjusted.
    Type: Grant
    Filed: May 17, 1991
    Date of Patent: July 28, 1992
    Inventor: Bjorn O. Thoresen
  • Patent number: 5026018
    Abstract: An apparatus for forming risers for concrete steps between a pair of spaced vertical walls. The apparatus takes the form of a bracket which is to connect with a length of wood such as a conventional 2.times.6. A threaded member associated with the bracket in threading movement causes the bracket to extend from the 2.times.6 to produce a clamping of the 2.times.6 in the bracket between the spaced vertical walls. As a result, a removable barrier is formed which is to contain concrete when it is poured. After sufficient drying of the concrete, the 2.times.6 and the bracket are removed from the vertical side walls leaving the now produced concrete step.
    Type: Grant
    Filed: February 26, 1990
    Date of Patent: June 25, 1991
    Inventor: Harry J. Ayala
  • Patent number: 4846437
    Abstract: Mold fabrication apparatus for forming molds is disclosed. The mold fabrication apparatus includes edge members (10) with lipped flanges (12) which extend rearwardly from the mold face (11), and brackets (14) which are notched to engage with the lipped flanges (12) at any desired positions along each edge member (10). The brackets (14) are flanged to enable them to be secured to a surface to locate the edge members (10).
    Type: Grant
    Filed: August 19, 1987
    Date of Patent: July 11, 1989
    Inventor: Leonard R. Fitzgerald
  • Patent number: 4775131
    Abstract: An apparatus as disclosed for making concrete forms for making stairs. A substantially planar member has a riser end and a pivot end substantially opposite the riser end and has first and second. A pivot point rotatably fixes the pivoting end to a stringer so that the riser end can pivot with respect to the pivot end. A riser support member is mounted perpendicular to the planar member adjacent the riser end and extends to each side of the planar member. A kneeboard support may be placed on both sides of the planar member so that a kneeboard may be placed between one apparatus and a corresponding apparatus on the other side of the stairs. A scale may be provided for positioning the apparatus with respect to the stringer to facilitate mounting subsequent apparatus to a given stringer. The riser support member may be slanted to provide a constant toe-in or kickback.
    Type: Grant
    Filed: June 30, 1986
    Date of Patent: October 4, 1988
    Inventor: David Baumgartner
  • Patent number: 4714231
    Abstract: The present invention has as an object an adjustable mold for the manufacture of concrete elements such as staircases of the type having a straight line extent, of which the treads are perpendicular or not perpendicular to the risers.
    Type: Grant
    Filed: April 8, 1986
    Date of Patent: December 22, 1987
    Inventor: Bernard Colman
  • Patent number: 4635895
    Abstract: A spreader bracket for positioning concrete forms for concrete foundations, particularly the stem wall of a housing foundation. The spreader bracket is fabricated in the fashion of a strut to elevationally support and space an inner form member from an outer form member, the strut being fastened to the outer form member and its associated stake bracing to permit the inner form member to be properly supported above a slab bed, and to be easily removed after initial set of the concrete pour with minimal damage to the slab and stem wall.
    Type: Grant
    Filed: April 5, 1985
    Date of Patent: January 13, 1987
    Inventors: Edward C. Johnson, Jr., Leroy M. Johnson, Kevin Jewison
  • Patent number: 4601456
    Abstract: An apparatus for forming concrete structures which is comprised of size variable form units that can be erected in various forms by incorporating telescopic struts, telescopic batters with fastening means including spring catch members and spring latch members that can be interengaged and disengaged easily. Two members one of which is inclined relative to the other can be connected with a connecting means including a toothed member and a spring engaging member having a toothed face. Tiles can be adhered to the molded concrete structure simultaneously with the molding.
    Type: Grant
    Filed: March 14, 1985
    Date of Patent: July 22, 1986
    Inventor: Shaw G. Jan
  • Patent number: 4444374
    Abstract: A concrete forms assembly for casting a concrete stair and comprising two tiers of panels of sheet material, each panel being channel shaped in cross section. Each tier of panels comprises a pair of opposite side panels and a front panel bridging ends of the side panels, and the side panels of the second tier are shorter than the side panels of the first tier so as to leave an exposed space to define a first or intermediate step of the stair. Clips are swingably disposed on the upper flange of each of the side panels in the lower tier to engage with the lower flanges of the front panel in the second tier, and hooks are carried by the upper flanges of each of the side panels for connecting the upper flanges of the front panels to the front panels in the respective tiers.
    Type: Grant
    Filed: July 12, 1982
    Date of Patent: April 24, 1984
    Inventor: Selmer E. Gramstad
  • Patent number: 4365780
    Abstract: The present device is especially useful for positioning on forms prior to the pouring of concrete for removal therefrom to create holes in the concrete to receive inserts therein such as in making holes in concrete for steps to be used in a manhole. A tapered steel shaft of any selected length has a collar fixed near one end thereof with an elongated handle passing transversely therethrough. The collar has slanted cam edges on each end providing a cam surface which is approximately 12.degree. from a line perpendicular to the axis. A second collar identical to the first is welded to a form, such as a steel concrete form used in pouring concrete for manholes. The second collar also has slanted cam edges providing a cam surface corresponding to the slanted cam edges on the first collar and there is a hole passing through the steel pin and through the second collar to receive a removable latch pin therein.
    Type: Grant
    Filed: March 23, 1981
    Date of Patent: December 28, 1982
    Assignee: M. A. Industries, Inc.
    Inventor: Craig B. Williams