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US 4,216,589 AGranted
Sighting device for surveillance camera
AssigneeAmerican Electronics, Inc.
InventorRichard C. Beaver
Life of this patent
Estimating the term…
Abstract
A temporary sighting device which can be used on a surveillance camera during installation and adjustment, and which includes front and rear spaced apart, parallel walls, each of which contains a window provided with cross-hairs, whereby lines of sight extending through an intersection of the cross-hairs in the rear window and about the outer perimeter of the front window define the field of view of the camera. In the preferred form, the sighting device is produced from paper card stock and is foldable to a collapsed, flat position for shipping purposes.
Claims7
A temporary sighting device for cameras, comprising:
- a rectangular frame having substantially parallel, axially spaced front and rear walls with substantially parallel, opposite side edges, and central axially aligned windows with outer perimeters;
- opposed side walls with substantially parallel opposite side edges;
- means joining the side edges of the side walls with related side edges of the end walls;
- means to mount and orient said frame on a camera case;
- the aforesaid means joining the edges of the side and end walls being hinged, whereby said frame is foldable between an operative position in which the planes of the end walls are normal to the planes of the side walls, and a folded position in which the planes of the end walls are substantially parallel with the planes of the side walls and said side and end walls are in juxtaposition;
- and
- a set of related sighting markings within the perimeters of the windows in alignment on the central longitudinal axis of the frame.
4 more elements
Dependencies are inferred from the claim text.