Other

Illinois Tool Works Inc.

Expando-lok, Inc.

Boxall, Russell

Parkes, Nigel K.

Nigel K Parkes

Russell Boxall

Robert Urquhart Connell

David Graham Barnes

Nicholas Francis Jolly

Robert Alan Rodden

Ernest K Schrader

Feng Mu

Nicholas Fancis Jolly

Robert U Connell

Various embodiments provide a functionally reinforced concrete slab including a concrete substrate having a first substrate area with a first reinforcement level and a second substrate area having a different second reinforcement level. The functionally reinforced concrete slab further includes a concrete substrate reinforcement apparatus enclosed within the concrete substrate. The concrete substrate reinforcement apparatus is positioned based on the first substrate area and the second substrate area to provide a non-uniform reinforcement of the concrete substrate.

Functionally reinforced concrete slab

Various embodiments of the present disclosure provide a load transfer plate and load transfer plate pocket that co-act to transfer vertical or substantially vertical loads from one concrete slab to the adjacent slab in an enhanced manner by optimizing the positions of the load transfer plate relative to the adjacent concrete slabs for load transfers between the adjacent concrete slabs.

Load transfer plate and load transfer plate pocket and method of employing same

Various embodiments of the present disclosure provide a load transfer plate including a non-symmetrically shaped body having a semi-cylindrical first portion configured to protrude into and be secured in the first cast-in-place concrete slab and a non-semi cylindrical second portion configured to protrude into a load transfer plate pocket secured in the second cast-in-place concrete.

Load transfer plate and method of employing same

Various embodiments of the present disclosure provide a joint edge assembly and method of positioning and installing joint edge assembly for adjacent concrete slabs. The method includes positioning the joint edge assembly in an offset position from the joint. The method of various embodiments also includes using a plurality of height adjusters or plates fixed to the slab engagement surface of the one of the joint edge members to adjust or assist in adjusting the height of the joint edge assembly relative to the formwork and relative to the plane of the top surfaces of the concrete slabs.

Joint edge assembly and method for forming joint in offset position

A leave-in-place forming system for concrete slabs and pavements that comprises a number of components including two or more of the following: a plate dowel for load transfer between adjacent concrete panels (joint stability), a divider plate, and an assembly or molding to finish the concrete to, that armors the joint and/or provides a water-tight seal to the joint. The joint assembly could incorporate an integral setting assembly or bracket or could be used with a re-usable setting bracket. The integral assembly or bracket is most suitable when it is desirable to place concrete to both sides of the joint assembly at the same time. The re-usable setting bracket is most suitable where concrete is placed to just one side of the assembly and it is desirable to re-use the setting assembly.

Leave-in-place concrete formwork combining plate dowels, divider plates, and/or finishing, armoring and/or sealing molding

Novel dowel structures and related methods are provided. In one embodiment, a unitary dowel structure is formed from a plurality of laminates. In certain embodiments, a first dowel laminate may be placed substantially above or below one or more other dowel laminates. At least one laminate may include a first material that is substantially devoid in another laminate. Upon being in communication, the laminates may form a unitary dowel structure having a first end and a second end that are configured to flex in a vertical direction without breaking to transfer stress loads from a concrete slab in communication with the first end of the unitary dowel structure and a concrete slab in communication with the second end of the unitary dowel structure.

Transferring loads across joints in concrete slabs

A tapered load plate transfers loads across a joint between adjacent concrete floor slabs. The top and bottom surfaces may taper from approximately 4 inches wide to a narrow substantially pointed end over a length of approximately 12 inches. The tapered load plate accommodates differential shrinkage of cast-in-place concrete slabs. The tapered load plate may comprise a main plate and at least one extension. When adjacent slabs move away from each other, the narrow end of the tapered load plate moves out of the void that it created in the slab thus allowing the slabs to move relative to one another in a direction parallel to the joint. Tapered load plates may be assembled into a load-plate basket with the direction of the taper alternating from one tapered load plate to the next to account for off-center saw cuts.

Tapered load plate for transferring loads between cast-in-place slabs

A template for positioning a pocket former wherein the template positions the pocket former at a fixed depth with respect to the top of concrete formwork. The template comprises a support and a body. The support positions the template; the body comprises a positioner for locating a pocket former. A spacer that connects to the support according to the desired depth of the pocket former can also be included. The template thus provides a reliable and efficient way of ensuring that a pocket former is placed at the appropriate depth.

Method for constructing adjacent cast in place concrete slabs using a template for positioning pocket formers

A generally rectangular load plate for transferring loads between a first cast-in-place slab and a second cast-in-place slab separated by a joint. The load plate being adapted to transfer load between the first and second slabs directed essentially perpendicular to the intended upper surface of the first slab, and allowing relative movement between adjacent concrete slabs along the joint between the slabs with minimal joint opening between the slabs. A pocket former embedded within the first slab may also be included to position the load plate and create void space on the sides of the load plate to permit the relative movement. A compressible material along the side of the load plate may also be used to permit the relative movement. Neither the void space created by the pocket former nor the compressible material are dependent upon the existence of a significant gap in the joint between the concrete slabs.

Rectangular load plate

A tapered load plate transfers loads across a joint between adjacent concrete floor slabs. The top and bottom surfaces may taper from approximately 4 inches wide to a narrow substantially pointed end over a length of approximately 12 inches. The tapered load plate accommodates differential shrinkage of cast-in-place concrete slabs. When adjacent slabs move away from each other, the narrow end of the tapered load plate moves out of the void that it created in the slab thus allowing the slabs to move relative to one another in a direction parallel to the joint. Tapered load plates may be assembled into a load-plate basket with the direction of the taper alternating from one tapered load plate to the next to account for off-center saw cuts. A tapered load plate and an end cap may be used to provide load transfer across an expansion joint.

Embodiments of the invention relate to an on-grade joint-stability system for on-grade concrete slabs. Embodiments of the system may include: a first on-grade concrete-slab portion; a second on-grade concrete-slab portion that is separated from the first on-grade concrete-slab portion by a joint; a first on-grade plate having a first portion and a second portion, the first portion of the first on-grade plate being positioned underneath, and connected to, the first concrete-slab portion, and the second portion of the first on-grade plate being positioned underneath the second concrete-slab portion; and a second on-grade plate having a first portion and a second portion, the first portion of the second on-grade plate being positioned underneath the first concrete-slab portion, and the second portion of the second on-grade plate being positioned underneath, and connected to, the second concrete-slab portion, such that height differentials across the joint are substantially prevented.

On-grade plates for joints between on-grade concrete slabs

Load transfer plate for in situ concrete slabs

A load plate for transferring loads between a first cast-in-place slab and a second cast-in-place slab separated by a joint. The load plate having a substantially tapered end having substantially planar upper and lower surfaces adapted to protrude into and engage the first slab, and the load plate being adapted to transfer between the first and second slabs a load directed substantially perpendicular to the intended upper surface of the first slab. A blockout sheath embedded within the first slab could also be included. The block out sheath could have a substantially planar top surface and a substantially planar bottom surface substantially parallel to the upper surface of the first slab. The top and bottom surfaces of the blockout sheath could each have a width, measured parallel to an intersection between the joint surface and the upper surface of the first slab, that substantially decreases away from the joint surface. The width of the blockout sheath could be substantially greater than the width of the substantially tapered end at each corresponding depth along the substantially tapered end and the blockout sheath, such that the substantially tapered end could move within the sheath in a direction parallel to the intersection between the upper surface of the first slab and the joint surface.

Growing community of inventors

Atlanta, GA, United States of America

Nigel K Parkes