# US 5,699,644 A · Prefabricated building panel

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- Number: US 5,699,644 A
- Document ID: US5699644A
- Status: Granted
- Kind: A
- Application number: 08/733,337
- Filed: 1996-10-17
- Granted: 1997-12-23
- Earliest claimed: 1988-06-23
- Inventors: Rodney I. Smith
- Web page: https://patentgrep.com/patent/US5699644A

## CPC

- E04C 3/28: of materials not covered by groups E04C3/04 - E04C3/20
- E04B 5/04: with beams {or slabs} of concrete or other stone-like material, e.g. asbestos cement (E04B5/08, E04B5/14 take precedence)
- E04C 2/06: reinforced
- E04C 2/38: with attached ribs, flanges, or the like, e.g. framed panels (concerned with attaching to other panels or elements to form a structure, see the places for the relevant structure, e.g. E04B2/00)
- E04C: STRUCTURAL ELEMENTS; BUILDING MATERIALS (for bridges E01D; specially designed for insulation or other protection E04B; elements used as building aids E04G; for mining E21; for tunnels E21D; structural elements with broader range of application than for building engineering F16, particularly F16S)
- E04B: GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS (border constructions of opening in walls, floors or ceilings E06B1/00; {electromagnetic shielding H05K9/0001})

## Abstract

A prefabricated, reinforced construction panel consisting of a cast, concrete slab which is reinforced by rigid channels or studs. The studs are attached to the slab by thermally non-conductive connectors imbedded in the slab and joined to the reinforcing channels or studs to create an energy efficient light weight and durable panel. An insulation layer may be placed between the channels or studs and the concrete slab. The space between the reinforcing channels or studs may also be filled with insulating material.

## Claims

### Claim 1

A prefabricated, construction panel comprising a slab having permanently imbedded therein a plurality of thermally non-conductive spaced lugs for permanently securing said slab to rigid means for structurally reinforcing said panel, said lugs being joined to said reinforcement means and projecting into one surface of said slab to maintain a fixed separation forming a space between said slab and said reinforcement means, and wherein at least a portion of the part of said lugs which project into the slab has an asymmetric configuration comprising a progressively wider taper as it extends into the slab.

### Claim 2 (depends on 1)

The construction panel of claim 1 wherein said separation between said slab and reinforcement means is a space filled with thermal insulation.

### Claim 3

A prefabricated construction panel comprising a slab having permanently imbedded therein a plurality of thermally non-conductive spaced conical lugs which have increasing diameter as they project into said slab and terminate in a pointed head which projects into said slab for permanently securing said slab to rigid means for structurally reinforcing said panel, said conical lugs being joined to said reinforcement means and projecting into one surface of said slab to maintain a fixed separation forming a space between said slab and said reinforcement means.

### Claim 4 (depends on 3)

The construction panel of claim 3 wherein said lug is made of a thermally non-conductive material.

### Claim 5 (depends on 3)

The construction panel of claim 3 wherein said lug is attached to said reinforcement means by a bolt extending axially into said lug.