Navigational aid device

Details Navigational aid device Navigational aid device

1984-01-13

1985-04-23

Little, Willis

Geometrical instruments

Straightedge type

Base attached

33435, 33457, B43L 500

Patent

active

045120870

ABSTRACT:
A navigational aid device of the type comprising a disc supporting a map, especially a chart, a protractor being movable over said map, a first carrier movable in the longitudinal direction of said disc, and a second carrier which is movable on said first carrier and in the transversal direction of said disc and upon which said protractor is rotatably journalled. Said first carrier consists of at least one ruler extending across said disc and situated upon said map and sliding means situated between said map and said disc and connected to said at least one ruler, said sliding means being provided with at least one guide member movable along track means provided on and extending longitudinally of said disc.

REFERENCES:
patent: 1808359 (1931-06-01), Lewis
patent: 2942347 (1960-06-01), Kuhn
patent: 3625417 (1971-12-01), Slauter
patent: 3844041 (1974-10-01), Wilson, Jr.
patent: 4213248 (1980-07-01), Jerhammar
patent: 4359628 (1982-11-01), Lambert

Affiliated with

Also associated with

Rating

Navigational aid device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Navigational aid device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Navigational aid device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-29959