Compass hood
OwnerJames M. Boslandinventor
Life of this patent
Estimating the term…
Abstract
A compass hood construction is disclosed capable of closing entirely the face of a compass yet also providing higher viewing angles than is usually possible with available hood constructions. An outer stationary hood segment frictionally engages an annular flange in which the compass is mounted. Mounted within the hood segment are inner and outer hood sectors which are pivotally pinned to the stationary hood segment. The inner hood sector includes a tongue which engages a groove in the interior wall of the outer hood sector. When fully opened, the hood is defined essentially by the stationary hood segment. When fully extended, the inner and outer hood sectors form a hemispherical enclosure with the hood segment, completely enclosing the compass face.
Claims6
A hood construction for use with a compass having an annular compass ring, comprising:
- a stationary hood segment including a spherical sector and an annular base adapted to be secured to a mounting member,
- outer and inner hood sectors pivotally mounted interiorally of said spherical sector, said hood sectors being rotatable relative to each other and relative to said spherical sector, said hood sectors and spherical sector forming a hemispherically shaped hood for said compass when fully extended,
- projections extending between the exterior of said outer hood sector and the interior of said spherical sector, providing friction therebetween to hold said outer hood sector in any position between fully extended and fully retracted, relative to said spherical sector, and projections extending between the exterior of said inner hood sector and the interior of said outer hood sector, providing friction therebetween to hold said inner hood sector in any position between fully extended and fully retracted, relative to said outer hood sector.
Dependencies are inferred from the claim text.