Football yardline locating device
OwnerWilliam E. Lynninventor
Life of this patent
Estimating the term…
Abstract
An object such as a football lying on a playing field is optically sighted through a measuring plane from a remote location. An adjustable framing assembly outlines the field as viewed in the measuring plane and mounts scale means to enable rapid measurement of the object location on the field.
Claims9
Apparatus for locating a point on a remote surface having a perimeter, comprising a substantially stationary platform, optical sighting means mounted by the platform for viewing said said point on the remote surface through a measuring plane, framing means mounted on the platform for adjustment to an outline corresponding to said remote surface perimeter viewed substantially in said measuring plane, extensible scale means movably mounted by the framing means for displacement substantially in said measuring plane, and actuating means connected to the scale means for displacement thereof to a measuring position indicating the location of said point on the remote surface relative to said perimeter as outlined in the measuring plane.
Apparatus for measuring the location of an object on a remote surface enclosed by a predetermined perimeter, including means for sighting said object along an optical axis, means for establishing a measuring plane intersected by said optical axis, adjustable framing means for outlining said predetermined perimeter as viewed in said measuring plane, an elastically deformable scale element, anchor means mounted on the framing means and connected to the scale element for guiding movement thereof substantially within said measuring plane, and displacing means engageable with the anchor means for movement of the scale element along an adjusted path within the measuring plane to a measuring position aligned with said optical axis.
Apparatus for measuring the location of an object on a remote surface enclosed by a predetermined perimeter, including means for sighting said object along an optical axis, means for establishing a measuring plane intersected by said optical axis, adjustable framing means for outlining said predetermined perimeter as viewed in said measuring plane, scale means of uniformly variable length for measuring distances in the measuring plane, and means for guiding movement of the scale means on the framing means to a measuring position intersecting the optical axis.
Dependencies are inferred from the claim text.