Geometrical instruments – Area integrators – Electrical
Patent
1979-05-14
1980-08-19
Phillips, Charles E.
Geometrical instruments
Area integrators
Electrical
33 1SB, 33142, 235 795, G01B 312
Patent
active
042176964
ABSTRACT:
A device for measuring linear or curvilinear map distance and determining the rate or time of travel represented by such distance. The device includes an elongate, hollow body having a slot extending along a portion of its length, an indicator shiftable along the slot, and a traction element rotatably mounted at one end of the body. Rotation of the traction element, as the same is moved across a surface, such as a map surface, along a selected path, produces indicator shifting which is proportional to the distance represented by such path. The apparatus also includes a transparent, cylindrical sleeve mounted on the body for rotation relative thereto. This sleeve carries radial and axial calibrations which are alignable with the slot and the indicator, respectively, when the sleeve is rotated, to produce distance-related time and rate of travel determinations, respectively.
REFERENCES:
patent: 997648 (1911-07-01), Cavanagh
patent: 1383340 (1921-07-01), Robbins
patent: 2363545 (1944-11-01), Morehead
patent: 3494039 (1970-02-01), Porter
patent: 3514582 (1970-05-01), Sanderson
LandOfFree
Time-distance calculator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Time-distance calculator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time-distance calculator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1421936