Combination layout tool and square
Patent 4574492 Issued on March 11, 1986. Estimated Expiration Date: 
March 11, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 11, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorApplicationNo. 06/466571 filed on 02/15/1983US Classes:33/427, Square and sliding nonpivotal straightedge(s)33/429, Square and fixed straightedge33/464, Sliding33/476, With special scale markings33/481MultiplaneExaminersPrimary: Haroian, Harry N.Attorney, Agent or FirmInternational ClassesB25H 7/02 (20060101)B25H 7/00 (20060101) B43L 7/027 (20060101) B43L 7/00 (20060101) B43L 7/14 (20060101) AbstractA combination device including a layout tool having a rectangular plate and a rectangular endpiece; and a square adaptor having an attachment plate and a ruler assembly. The layout tool is provided with a number of slots and apertures which allow a construction worker to make quick, standard measurements. The square adaptor includes a pivotable ruler which can be aligned parallel to or perpendicular to the longitudinal edges of the layout tool.Field of SearchSquare and sliding nonpivotal straightedge(s)Sliding Sliding pivotal adjustment T-square Try square Multiplane Plural straightedges nonadjustably fixed at right angles (e.g., T-square, triangles, squares) Square and fixed straightedge With special scale markings Lettering guide Multiplane angularly adjustable Roof framing Having rafter cut indicia (e.g., pitch, rise, etc.) STRAIGHTEDGE TYPE Compound curved and straight-line | |
