Low profile compass with removable protective cover and magnetic bull's eye alignment system
AssigneeThe Brunton Company
InventorMarlin D. Iden
Life of this patent
Estimating the term…
Abstract
A low profile compass of the type including a transparent base member and fluid-filled vial contains a directional indicator in the vial in the form of a circle which is alignable with another circle imprinted on the vial. A hinged cover assembly can be detented to selected positions and includes a mirrored sight line for direct line sighting, and a lower protective cover or shoe for the base of the compass also serves as a receptacle for instruction sheets and scales for use in taking directional readings as well as for orientation alignment on a topographic map and inclinometer readings.
Claims15
In a compass having a base member and a compass capsule filled with fluid and containing a magnet having a directional indicator thereon, said capsule facing upwardly from an upper surface of said base member, the combination therewith comprising:
- a protective shoe composed of a soft pliable material including a bottom wall, opposite side and opposite end walls at least partially surrounding an outer periphery of said base member while leaving said upper surface and said compass capsule exposed.
In a compass having a transparent base member and a directional indicator mounted on an upper surface of said base member, a protective shoe composed of a soft pliable material disposed in snug-fitting but releasable engagement with said base member while leaving an upper surface and said directional indicator exposed, and an upper cover in hinged engagement with said base member for pivotal movement with respect to said base member and said shoe.
In a compass having a base member and a compass needle disposed in a vial mounted on said base member, the combination therewith comprising:
- a cover member for said base member, common ends of said cover member and said base member extending beyond said vial and including hinge portions;
- and
- at least one hinge pin inserted through said hinge portions, said hinge pin including a detent engagable with scalloped recesses along an inner surface in at least selected of said hinge portions to yieldingly resist pivotal movement of said cover member with respect to said base member.
In a compass having a base member and a compass capsule filled with fluid and containing a magnet having a directional indicator thereon, the combination therewith comprising:
- a protective shoe composed of a soft pliable material including side and end walls at least partially surrounding an outer periphery of said base member while leaving said compass capsule exposed, said base member being transparent and said shoe including a receptacle for printed materials beneath said base member.
Dependencies are inferred from the claim text.