Angle measurement tool

• US 20040006881A1
• Filed: 02/14/2003
• Published: 01/15/2004
• Est. Priority Date: 02/28/2002
• Status: Active Grant

• Current Assignee: Marc Lev Shapiro
• Original Assignee: Marc Lev Shapiro
• Inventors: Shapiro, Marc Lev
• Granted Patent: US 6,804,895 B2
• Time in Patent Office: Days
• US Class Current: 33/471
• CPC Class Codes: G01B 3/56 Gauges for measuring angles or tapers, e.g. conical calipers

Abstract

An angle measuring tool having pivotally connected members and an angle measurement index with and off center portion positioned so that upon the rotation of one member with respect to the other the angle between the two members can be accurately determined with no possibility of slippage of the angle measurement index due to the off center portion mating with one of the members.

Claims

1. An angle measuring tool comprising:

a first leg having a recessed portion being pivotally connected to a second leg having a recessed portion,

angle measurement means having a top side and a bottom side said angle measurement means positioned in said recessed portion of said first leg so that the surface of said top side is coplanar with the top surface of said first leg and a portion of said bottom side extends through an opening in said recessed portion of said first leg,

said portion of said bottom side having a projection,

said projection of said portion of said bottom side having an off-center peg extending from said projection wherein said portion fits into said recessed portion of said second leg and locking said second leg for movement together in relation to said second leg and wherein the angle formed by said first and second legs is readable on said surface of said top side of said angle measurement means.

2. The angle measurement means of claim 1 wherein said recess of said second leg has an off-center socket into which said peg is positioned.

3. The angle measurement means of claim 2 wherein an O-ring is positioned between said first and second legs to provide a frictional force between said first and second legs.

4. The angle measurement means of claim 3 wherein said first and second legs each have at least one straight edge.

5. The angle measurement means of claim 2 wherein said first and second legs each have at least one straight edge.

6. The angle measurement means of claim 4 wherein said first and second legs are held together by a bolt connected to said legs at said pivot point.

7. The angle measurement tool of claim 3 wherein said top surface of said top side of said angle measurement means is circular in shape.

8. The angle measurement tool of claim 7 wherein all of the actual angle, the miter joint angle and the complementary angle and the supplementary angle can be read simultaneously.