Geometrical instruments – Straight-line light ray type – Alignment device
Patent
1991-07-22
1993-03-02
Cuchlinski, Jr., William A.
Geometrical instruments
Straight-line light ray type
Alignment device
33293, 40598, G01C 1500
Patent
active
051898039
ABSTRACT:
A device for measuring the position of a football on a football playing field has a base member adapted to be placed in juxtaposition on a yard line on the football playing field. A first elongated member to determine the distance the football is positioned relative to the base. A second elongated member visually indicates the location of the base. First pivotal mounting is used to pivotally connect the first elongated member to the base to permit the first elongated member to be selectively rotated into engagement with the second elongated member and into a measuring position. Second pivotal mounting apparatus may be used to pivotally connect the second elongated member to the base so that the base remains substantially in juxtaposition with the line on the field when the first and second members are moved relative to the base when marking the position of the football on the field. The base may include a surface disposed to face the football field and a serration disposed in the surface to provide a shoulder to prevent slippage of the base relative to the football field. Indicating apparatus may be connected to the second elongated member for indicating the position of the base on a yard line. A clamping device is adapted to be secured to the first elongated member for indicating the location of the football along the first elongated member when positioned in the measuring position.
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Kalamazoo Gazette , "Sports", K1, Jack Moss, Ed, Apr. 23, 1989.
Letter from Jim Mullendore to A. L. Birdsall, dated May 24, 1989.
Letter from James W. Lessig to MAC Football Coaches, Dated: Sep. 8, 1989.
Letter from Fredrick D. Sible to Albert L. Birdsall, Dated: Oct. 24, 1988.
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Kalamazoo Gazette, D7, Jack Moss, Editor, Dec. 14, 1989.
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Letter from Dick Schindler to Whom it may concern, Dated: Feb. 18, 1991.
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Cuchlinski Jr. William A.
Dalco Athletic Lettering, Inc.
Post, III Harry C.
Wirthlin Alvin
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