Eugene E Zellner

US Patent:

6397548, Jun 4, 2002

Filed:

Jul 24, 2000

Appl. No.:

09/624041

Inventors:

Michael L. Martin - Tacoma WA
Eugene E. Zellner - Tacoma WA

Assignee:

APA-The Engineered Wood Association - Tacoma WA

International Classification:

E04F 1504

US Classification:

525924, 525921, 52390, 428192, 403334

Abstract:

A tongue and groove profile for a construction panel wherein the tongue protrudes and extends outwardly from a first edge of the panel to a head portion. A shoulder portion of the tongue has two radiused convex or concave sides which intersect and merge with the first edge of the panel. A groove is formed in a second edge of the panel and extends inwardly into the second edge forming a cavity. The groove has a head portion which extends into a neck which expands into a shoulder which has two radiused concave or convex sides so that the tongue will fit into the groove. The radiused sides expand to form an opening in the second edge of the panel. The tongue of one panel can fit in interlocking relationship into the a groove of a second panel to form a joint between the two panels.

US Patent:

60983655, Aug 8, 2000

Filed:

Nov 19, 1998

Appl. No.:

9/196640

Inventors:

Michael L. Martin - Tacoma WA
Eugene E. Zellner - Tacoma WA

Assignee:

APA - The Engineered Wood Association - Tacoma WA

International Classification:

E04B 138
E04F 1504

US Classification:

525921

Abstract:

A tongue and groove profile for a construction panel wherein the tongue protrudes and extends outwardly from a first edge of the panel and has a chamfered head. The head expands from the chamfered edge to a neck and merges into a shoulder portion. The shoulder portion of the tongue has two radiused convex sides which intersect and merge with the first edge of the panel. A groove is formed in a second edge of the panel and extends inwardly into the second edge forming a cavity. The groove has a chamfered head which expands into a neck which then expands into a wider shoulder portion which has two radiused concave sides which expand outwardly to form an opening in the second edge of a panel. The tongue of one construction panel can fit in interlocking relationship into a groove of a second panel to form a joint between the two panels.