Non-contact rotational position sensor and throttle valve...

Details Non-contact rotational position sensor and throttle valve... Non-contact rotational position sensor and throttle valve...

2008-09-30

2008-09-30

Patidar, Jay M (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

C324S207250, C123S406520

Reissue Patent

active

10797702

ABSTRACT:
A non-contact sensor for sensing a rotational position of a rotating object is provided. A ring-shaped permanent magnet magnetized in the axial direction is sandwiched between two pairs of magnetic plates from above and below. Two pairs of upper and lower protruded magnetic substance portions are provided between the upper and lower magnetic plates at opposite outer ends thereof. Magnetic sensitive devices are inserted in air gaps between the two pairs of upper and lower protruded magnetic substance portions. A magnetic flux generated from the ring-shaped permanent magnet is substantially concentrated to the protruded magnetic substance portions and passes the magnetic sensitive devices. The amount of magnetic flux passing each magnetic sensitive device is substantially proportional to the rotational angle of the ring-shaped permanent magnet. The rotational position of the ring-shaped permanent magnet and hence the rotational position of a rotating shaft supporting the ring-shaped permanent magnet can be sensed in a non-contact manner as a signal output from the magnetic sensitive device. Since the magnetic flux is effectively concentrated to positions where magnetic sensitive devices are attached, a non-contact rotational position sensor having high accuracy and high sensitivity can be obtained.

REFERENCES:
patent: 4789826 (1988-12-01), Willett
patent: 5164668 (1992-11-01), Alfors
patent: 5444369 (1995-08-01), Luetzow
patent: 5528139 (1996-06-01), Oudet et al.
patent: 5544000 (1996-08-01), Suzuki et al.
patent: 5659246 (1997-08-01), Togo et al.
patent: 5789917 (1998-08-01), Oudet et al.
patent: 6043645 (2000-03-01), Oudet et al.
patent: 6137288 (2000-10-01), Luetzow
patent: 6201388 (2001-03-01), Pecheny et al.
patent: 199 44 019 (2000-03-01), None
patent: 0 798 541 (1997-10-01), None
patent: 0798541 (1997-10-01), None
patent: 1 065 473 (2001-01-01), None
patent: 1065473 (2001-01-01), None
patent: 08-126380 (1996-05-01), None
patent: 2842482 (1996-06-01), None
patent: 2920179 (1998-08-01), None
patent: 2842482 (1998-10-01), None
patent: 2920179 (1999-04-01), None
patent: 2000-097606 (2000-04-01), None
patent: WO 97/43602 (1997-11-01), None

Affiliated with

Also associated with

Rating

Non-contact rotational position sensor and throttle valve... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Non-contact rotational position sensor and throttle valve..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-contact rotational position sensor and throttle valve... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3948224