Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1975-09-02
1977-06-28
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
33125C, 356169, H01J 314
Patent
active
040315959
ABSTRACT:
Measuring apparatus using the vernier fringe concept of measurement to provide a precise digital numeric indication of displacement between two relatively movable members. The apparatus includes an accurately ruled grating or scale, a housing for supporting the scale, a transducer and a transducer support housing. The housing is secured to a flat mounting surface provided on one of the two relatively movable members while the transducer support housing is secured to the other of the two relatively movable members. The transducer includes an index grating supported on a movable carriage which rides on the scale and is held in engagement with the scale by a cantilever spring element. In order to insure readings accurate to 0.0001 inch, the housing is designed so that it holds the scale in close conformity with the flat mounting surface against which the housing is secured. Further, an alignment bracket arrangement is provided to carefully position the transducer and, hence, the cantilever spring relative to the scale.
REFERENCES:
patent: 3816003 (1974-06-01), Litke
patent: 3833303 (1974-09-01), Burns et al.
patent: 3867037 (1975-02-01), Litke
patent: 3899255 (1975-08-01), Meier
Bausch & Lomb Incorporated
Morgan DeWitt M.
Nelms David C.
Parker Frank C.
LandOfFree
High precision incremental distance measuring system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High precision incremental distance measuring system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High precision incremental distance measuring system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1512762