Square with improved means for determining angular cuts
CA 1232129 A · Owner: The Stanley Works · Inventors: Bies, Sylvester W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A roof framing square has a triangular body with an arcuate slot adjacent its hypotenuse and an arcuate sided aperture spaced inwardly therefrom. Both arcs are defined by radii having as their base point a pivot aperture spaced from the base leg along the vertical leg. A pivot pin seated in the pivot aperture pivotably mounts on the body of a protractor arm which is comprised of arm elements disposed on the opposite surfaces of the body. The protractor arm may be secured in a pivoted position by a clamping screw which draws the two arm elements together tightly against the opposed surfaces. An angular or protractor scale is provided along the arcuate edge of the aperture, and two scales …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted February 2, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 2, 2005.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.