PANEL AND LAP JOINT MADE THEREFROM

• US 3,667,185 A
• Filed: 03/30/1970
• Issued: 06/06/1972
• Est. Priority Date: 03/30/1970
• Status: Expired due to Term

• Current Assignee: McElroy Metal Mill, Inc.
• Original Assignee: Joseph M. Maurer
• Inventors: Maurer, Joseph M.
• Primary Examiner(s): Abbott, Frank L.
• Assistant Examiner(s): Raduazo, Henry E.
• Application Number:
  US05/023,743
• Time in Patent Office: 799 Days
• Field of Search: 52/537,625,588,521,536,630,478 287/189.36D
• US Class Current: 52/537
• CPC Class Codes: E04D 3/24 with special cross-section, e.g. with corrugations on both sides, with ribs, flanges, or the like E04D3/35 takes precedence
• CPC Class Codes: E04D 3/36 Connecting; Fastening
• CPC Class Codes: E04D 3/365 by simple overlapping of the marginal portions with use of separate connecting elements, e.g. hooks or bolts for corrugated sheets

Abstract

An improved weatherproof joint formed from overlapping one panel of improved design with another panel wherein the opposing marginal side edges of the panels are provided in the joint area with improved interfitting and opposing corrugations which form a unique deep truss-like lap joint structure having improved loadbearing characteristics.

Claims

1. A corrugated building panel of the type described and provided with marginal side edges having different configurations one of said marginal side edges comprising a double crested corrugation, the outermost crest of said corrugation providing a primary flat narrow nailing crest and said primary crest being connected by outwardly and downwardly disposed sidewalls to a secondary and relatively wide flat crest that substantially parallels the underside of the panel and projects to each side of the primary crest, the ends of said wide crest terminating in downwardly and outwardly inclined sidewalls that are substantially longer than said first mentioned sidewalls while being located at greater interior angles to the median plane of the panel than said first mentioned sidewalls, and the opposing marginal side edge of the panel which is adapted upon installation to be overlapped by the double crested corrugation of a similarly configured panel being provided with a flat topped corrugation that terminates in outwardly and downwardly inclined sidewalls that are longer than and are inclined at smaller interior angles to the median plane of the panel than the longer sidewalls of the double crested corrugation and the outermost sidewall of each of said marginal side edge corrugations having an outwardly projecting lip portion and the outermost sidewall of the double crested corrugation of the panel being overbent inwardly so that it can be sealingly tensioned against a wall of a corrugation of another building panel that it overlaps upon being installed on a building structure.

2. A corrugated building panel of the type defined in claim 1 and made from an aluminum base alloy in the extra hard temper.

3. A corrugated building panel of the type defined in claim 1 and made from an aluminum base alloy in the extra hard temper wherein at least one of the longer walls of the double crested corrugation is inclined at an interior angle on the order of 65* to the bottom of the panel containing said corrugation.

4. A corrugated building panel of the type defined in claim 1 and made from an aluminum base alloy in the extra hard temper wherein the walls of the corrugation that is to be overlapped by a similarly shaped panel are disposed at interior angles of about 56* to the bottom of the corrugated panel.

5. A corrugated building panel of the type set forth in claim 1 wherein the short walls of the double crested corrugation are disposed at interior angles of about 60* to the median plane of the panel.

6. A lap joint for roofing sheets and the like comprised of a pair of such sheets arranged in overlapping relationship at the marginal side edges thereof to form a deep truss-like joint structure, the overlapping side marginal edge of the upper sheet having a double crested corrugation whereby it is provided with a primary narrow and stiffened outermost flat nailing crest and a secondary substantially wider flat crest that substantially parallels the underside of the upper sheet and projects to each side of and is connected to said primary crest by angularly outwardly and downwardly disposed sidewalls, the the ends of said wider crest terminating in downwardly and outwardly inclined sidewalls that are substantially longer than said first mentioned sidewalls while being disposed at greater interior angles to the median plane of their associated sheet than said first mentioned sidewalls, said primary crest and first mentioned sidewalls providing a pocket for snugly receiving the crest of the corrugation of the underlying and lapped edge portion of the lower sheet and the corrugation of the underlying sheet having a flat crest the edges of which terminate in downwardly and outwardly disposed sidewalls that are longer than the longer sidewalls of and generally parallel the short sidewalls of the first mentioned and lapping sheet at the upper portion thereof and which converge fully with and sealingly contact the longer sidewalls of the lapping sheet at the bottom portion thereof and each of the outermost walls of the interfitting corrugations of the lapped and lapping sheets having an outwardly projecting lip portion that sealingly engages an opposing sheet.

7. A lap joint as set forth in claim 6 wherein said lapped and lapping sheets contact each other at a pluraliTy of points while also being spaced from each other in selected areas that provide antisiphoning chambers in the joint.

8. A lap joint as set forth in claim 6 where at least one of said roofing sheets is made from an aluminum base alloy in the extra hard temper and the longer walls on said double crested corrugation of said one roofing sheet are inclined at interior angles on the order of 65* to the bottom of the sheet containing such double crested corrugation.

9. A lap joint as set forth in claim 6 wherein at least one of said roofing sheets is made from an aluminum base alloy in the extra hard temper and the walls on the corrugation of the lapped sheet are disposed at interior angles of about 56* to the bottom of said lapped sheet.

10. A lap joint as set forth in claim 6 wherein at least one of said sheets is made from an aluminum base alloy in the extra hard temper range.