Indicating positions

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

250231SE, H01J 314, G01D 534

Patent

active

046410279

ABSTRACT:
Typical apparatus as shown in FIGS. 1 and 12 for indicating the relative positions in a given direction between a reference point (24,59) and a test point (29,68) spaced therefrom and movable relative thereto is useful for measurement of the magnitude and direction of static or dynamic torque in a shaft (8). Overlapping transparent reference (20,60) and test surfaces (25,61), either parallel disks (60,61) or coaxial cylinders (20,25) each having a relevant portion covered with a plurality of equally spaced lines oriented predominantly normal to the given direction and at an angle to each other, produce moire fringes (30) when illuminated (14,15). One of the surfaces (25,61), being flexible, is connected to the shaft (8) so as to flex in response to torque between the reference point (24,59) and the test point (29,68), causing a change in the angle between the lines on the two surfaces (20,25;60,61), and thus of the spacing (D) (FIG. 3) of the moire fringe bands (30), which is optically detected (17) and converted, as shown in FIG. 4, to an electrical signal (42) to control power applied to the shaft (8).

REFERENCES:
patent: 4047585 (1977-09-01), Dlugos

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Indicating positions does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFUS-PAI-O-1092429

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.