Duct notching template apparatus
Patent 5083380 Issued on January 28, 1992. Estimated Expiration Date: 
April 23, 2010. 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.
April 23, 2010. 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 References 1116512 1636025 2332568 2632250 3834033 3834034 Structural beam square Marker attachment for rules Sheet metal bending position marker system Framing stud template InventorApplicationNo. 513237 filed on 04/23/1990US Classes:33/562, Template33/464, Sliding33/485, For performing diverse function33/486IndexExaminersPrimary: Shoap, Allan N.Assistant: Fulton, C. W. Attorney, Agent or FirmInternational ClassesG01B 003/30B43L 013/00 669 668 484 485 AbstractThe disclosure relates to a duct notching template apparatus having slidably positionable and settable end templates and a center template. The end templates have hooked or tabbed edges for engaging the edge of a piece of sheet metal to be scribed for notching. The templates contain windows for viewing the measuring indicia on the longitudinal element on which they are disposed.Field of SearchTemplateSingle sheet type Geometrical figure, three dimensional to two dimensional figure or curve Line or guide Surface plate or gauge block Adjustable gauge block With scale Proportional line segmenter Special scale markings Square and sliding nonpivotal straightedge(s) Straightedge bisects right angle of square (i.e., centering square) Plural straightedges, relatively moveable Sliding With special scale markings Lettering guide Lettering guide Plural straightedges nonadjustably fixed at right angles (e.g., T-square, triangles, squares) Index | |
