David M Keith

US Patent:

6854229, Feb 15, 2005

Filed:

May 29, 2003

Appl. No.:

10/447724

Inventors:

David O. Keith - American Fork UT, US
Mark Donaldson - Provo UT, US

Assignee:

H.K. Marketing LLC - American Fork UT

International Classification:

E04G017/08

US Classification:

52428, 52426, 52439, 5230912

Abstract:

An elongate sleeve tie is used with casting form ties in the manufacture of composite wall structures. The casting form ties and sleeve ties act to secure one or more casting forms in a rigid position relative to an insulating layer positioned between the casting forms during the manufacture of composite wall structures. The casting form tie is received in a central recess of the elongate sleeve tie. Once the composite wall has been formed, the casting form ties may be pulled out of the wall, leaving the elongate sleeve ties in place. Removal of the casting form ties eliminates the thermal bridges that metal casting form ties would otherwise create. At least a portion of the sleeve tie is formed of a material having a high thermal resistance.

US Patent:

6895720, May 24, 2005

Filed:

Jul 23, 2003

Appl. No.:

10/626127

Inventors:

David O. Keith - American Fork UT, US

Assignee:

HK Marketing LC - American Fork UT

International Classification:

E04C001/41
F16B015/02

US Classification:

5230911, 5230912, 524051, 52426, 5274519, 411475, 411482, 411488, 411923

Abstract:

Connectors configured for providing composite wall structures with high composite action. In one embodiment, the connectors comprise a body having two spaced-apart sidewalls and a web portion extending therebetween, having a thickness that is less than the diameter or width of the sidewalls in the same dimension. The body also includes a tapered end comprising a single elongate edge or a plurality of spaced-apart edges or pointed ends at one end for facilitating penetration of the connector through layers of the composite wall during manufacture. An orienting protrusion orients the connector at a predetermined depth within the layers of the composite wall during manufacture. One or more structures anchoring anchor the connectors of the invention to layers of structural material placed on opposing sides of an insulation layer of the composite wall.

US Patent:

20040055236, Mar 25, 2004

Filed:

Sep 25, 2002

Appl. No.:

10/255019

Inventors:

David Keith - American Fork UT, US

International Classification:

E04C001/00
E04B005/00
E04B001/00
E04G021/00
E04G023/00

US Classification:

052/410000, 052/745210, 052/408000

Abstract:

The present invention includes connectors that are configured for securing an insulating layer to existing structures. The connectors are composed of a thermally insulating material to prevent undesired thermal bridging through the insulating layer. The connectors include enlarged contact surfaces and stems that are configured to prevent the connector from undesirably compressing, passing entirely through, or otherwise damaging the insulating layer. The connectors are configured to mount to the existing structure or to be coupled with embeds that are placed within the structural layer of a composite wall. The connectors may also include structure for interconnecting other wall layers to the composite wall and structure for slidably engaging a flat concrete tie.

US Patent:

20040055247, Mar 25, 2004

Filed:

Sep 25, 2002

Appl. No.:

10/254168

Inventors:

David Keith - American Fork UT, US

International Classification:

E04B002/00
E04C002/00
E04C002/54
A47B013/08

US Classification:

052/782240

Abstract:

Connectors configured for providing composite wall structures with high composite action. The connectors comprise a body having two sidewalls and a web portion extending therebetween. The body also includes a tapered end at one side for facilitating penetration of the connector through layers of the composite wall during manufacture. Orienting means orient the connector at a predetermined depth within the layers of the composite wall during manufacture. Anchoring means anchor the connectors of the invention to layers of structural material placed on opposing sides of an insulation layer of the composite wall.

US Patent:

61124915, Sep 5, 2000

Filed:

Oct 12, 1999

Appl. No.:

9/417158

Inventors:

David O. Keith - American Fork UT
David M. Hansen - American Fork UT

Assignee:

H. K. Composites, Inc. - American Fork UT

International Classification:

E04B 230
E04B 162

US Classification:

52410

Abstract:

Methods for manufacturing highly insulating connector rods and highly insulating composite wall structures using such connector rods. The connector rods are highly insulating and are injection molded in a single step from an appropriate resinous material or moldable plastic. Discontinuous fibers may be impregnated within the resinous material or other moldable plastic. The single-step molding method yields connector rods having pointed ends for facilitating entry through an insulating layer and a first structural layer not yet cured, and also an enlarged head for receiving an impact from a hammer or mallet or for facilitating gripping by the installer. The enlarged head also provides an anchoring effect within a second structural layer upon curing. The connector rods are manufactured to include a ridge or flange to limit the depth of penetration by the connector rod when inserted into the insulating material when forming the composite wall structure. The ridge or flange also helps to prevent the collapse of the second structural layer towards the first structural layer after formation of the composite wall structure and implementation at a building site.

US Patent:

61389811, Oct 31, 2000

Filed:

Aug 3, 1998

Appl. No.:

9/128594

Inventors:

David O. Keith - American Fork UT
David M. Hansen - American Fork UT

Assignee:

H.K. Composites, Inc. - American Fork UT

International Classification:

E04G 1706
E04G 1106

US Classification:

249 41

Abstract:

Connectors used in manufacturing composite wall structures to substantially prevent forms from being displaced in response to pressure generated by concrete poured between the forms. In a completed composite wall structure, the connectors extend through two structural layers and an insulating layer positioned therebetween. The composite wall structures are formed by positioning the insulating layer between and in a spaced-apart relationship to the two forms. The connectors are subsequently inserted through the insulating layer and the forms. As concrete is then poured into spaces between the forms and the insulating layer, a bearing surface on a form retention segment, which extends beyond the outer surface of the forms, abuts the forms and prevents them from moving away from the insulating layer. The bearing surface is either directly positioned on the form retention segment or on a form locking device attached to the form retention segment. After the concrete hardens, the forms are removed and the form retention segments are optionally detached from the remainder of the connector.

US Patent:

58097236, Sep 22, 1998

Filed:

Jul 17, 1997

Appl. No.:

8/895680

Inventors:

David O. Keith - American Fork UT
David M. Hansen - American Fork UT

Assignee:

H.K. Composites, Inc. - American Fork UT

International Classification:

E04B 284
F16B 1500

US Classification:

524051

Abstract:

Multi-pronged insulating connectors used in manufacturing insulative composite wall structures. At least a substantial portion of the connector is injection molded in a single step from an appropriate resinous material or moldable plastic. One or more prongs of the connector have a substantially pointed end for facilitating penetration of the connector through an insulating layer and an unhardened structural material, such as concrete. The opposite end, or gripping segment, includes a bridging structure for connecting the multiple prongs together and structure for facilitating gripping of the connector during placement in the insulating layer and first unhardened structural layer. The connectors include structures for helping to anchor the connectors within the structural layers upon hardening.

US Patent:

56735251, Oct 7, 1997

Filed:

Oct 15, 1996

Appl. No.:

8/731469

Inventors:

David O. Keith - American Fork UT
David M. Hansen - American Fork UT

Assignee:

H.K. Composites, Inc. - Orem UT

International Classification:

F04B 162
F04B 500

US Classification:

5230911

Abstract:

Highly insulating and substantially pointed connector rods used in making highly insulative composite wall structures. At least a substantial portion of the connector rod is injection molded in a single step from an appropriate resinous material or moldable plastic. The connector rod has a first substantially pointed end in a penetrating segment for facilitating entry through an insulating layer and for making abutting contact with a form sidewall when manufacturing a composite wall structure using a cast-in-place method. The opposite end, or trailing segment, also includes a substantially pointed end that makes abutting contact with another form sidewall. A middle or mesial segment resides within the insulating layer, which is sandwiched between two structural layers of a hardenable material, such as concrete. A first ridge or flange at the intersection between the mesial and trailing segments limits the depth of penetration of the connector rod when inserted through the insulating material. A second ridge or flange that is attached thereafter to the connector rod at the inspection between the mesial and penetrating segments locks the connector rod in place in a desired orientation within the insulating layer.