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US 4,733,477 AGranted
Chalk line framing square
OwnerJames R. Fincham, George Spectorinventors
Life of this patent
Estimating the term…
Abstract
A chalk line framing square is provided to aid in placing right angle intersecting chalk lines upon a floor so that tiles can be properly installed on the floor. The framing square can check the squareness of the tiles as they are installed without being placed in the adhesive.
Claims4
A chalk line framing square for a floor having tiles installed with adhesive thereon, said framing square comprising:
- (a) a pair of arms at right angles, each of said arms having a pair of spaced apart notches that are V-shaped and formed on the outer edge thereof to act as view points for enabling visual alignment of said arms for laying out right angle intersecting chalk lines upon the floor so that the tiles can be properly installed with the adhesive to the floor;
- and
- (b) a pair of handles, each of said handles affixed to the top of each of said arms to allow a person to hold said framing square to check squareness of the tiles without laying said framing square in the adhesive, wherein said arms are pivotally adjustable, said handles are pivotally mounted and said notches are formed on members pivotally mounted on said arms for laying out chalk lines at varying angles.
Dependencies are inferred from the claim text.