Let-ball detectors

Communications: electrical – Systems – Game reporting

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

73658, 273 29R, G08B 2300, A63B 6100

Patent

active

040817989

ABSTRACT:
Electric currents induced by a magnetic field being moved in relation to a fixed coil, by a vertical displacement of the net cable/tennis net, enables a referee to detect the occurrence of a "let-ball."

REFERENCES:
patent: 3415517 (1968-12-01), Krist
patent: 3677077 (1972-07-01), Merryman et al.
patent: 3697867 (1972-10-01), Klessattel
patent: 3774194 (1973-11-01), Jokay et al.
patent: 3924261 (1975-12-01), Kardashian
patent: 3982759 (1976-09-01), Grant
patent: 4004805 (1977-01-01), Chen et al.

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

Let-ball detectors does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFUS-PAI-O-645599

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