Load detecting system and automatic washing machine equipped...

Measuring and testing – Specimen stress or strain – or testing by stress or strain... – Specified electrical sensor or system

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Reexamination Certificate

active

07089800

ABSTRACT:
The invention provides a load detecting system comprising a core (83) of magnetostrictive material, a coil (85) disposed in the vicinity of the core, and a load detecting circuit (10) connected to the coil (85) for detecting the magnitude of a load acting on the core (83). The load detecting circuit (10) comprises an exciting circuit (102) for passing an a.c. detecting current through the coil (85), a pulse current generating circuit (103) for passing through the coil a detection preparing current having a current value greater than the maximum value of the detecting current, a change-over circuit (104) for effecting a change-over between the exciting circuit (102) and the pulse current generating circuit (103) to pass the detecting current through the coil after passing the detection preparing current therethrough, and a microcomputer (100) for deriving the magnitude of the load acting on the magnetostrictive element based on an impedance variation produced in the coil during the period of passage of the detecting current through the coil.

REFERENCES:
patent: 4811609 (1989-03-01), Nishibe et al.
patent: 4931729 (1990-06-01), Pratt
patent: 5146790 (1992-09-01), Fish
patent: 5198764 (1993-03-01), Spencer
patent: 5400656 (1995-03-01), Schiessle et al.
patent: 5850045 (1998-12-01), Harada et al.
patent: 6047605 (2000-04-01), Garshelis
patent: 6094995 (2000-08-01), Odachi et al.
patent: 6249418 (2001-06-01), Bergstrom
patent: 6983657 (2006-01-01), Kakutani 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

Load detecting system and automatic washing machine equipped... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Load detecting system and automatic washing machine equipped..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Load detecting system and automatic washing machine equipped... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3636673

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