Door suspension apparatus

Details Door suspension apparatus Door suspension apparatus

2006-03-21

2006-03-21

Friedman, Carl D. (Department: 3635)

Static structures (e.g., buildings)

Including component designed to receive a disparate article...

Mounted for movement

C052S213000, C049S118000, C049S360000, C049S409000, C187S315000, C187S316000

Reexamination Certificate

active

07013605

ABSTRACT:
A door suspension assembly includes a ferromagnetic flat plate horizontally extending from a support rail adapted to be attached to a door frame above a doorway or entrance portal. Two supporting blocks each have an opening in which a cylindrical bearing with an axial hole is located. The supporting blocks are attached to a door panel. Connectors extend downwardly from the flat plate and support a tube that extends through the holes in the bearings. A magnet array is supported by an upper plate attached to upper ends of the supporting blocks with a small magnetic gap between the magnet array and the flat plate such that the magnet array generates a magnetic force lifting the supporting blocks and the door panel. A primary of a linear motor is attached to the upper plate between the supporting blocks and cooperates with a secondary located in the interior of the tube to move the door panel relative to the flat plate.

REFERENCES:
patent: 4698876 (1987-10-01), Karita
patent: 4839543 (1989-06-01), Beakley et al.
patent: 4876765 (1989-10-01), Karita
patent: 5172518 (1992-12-01), Yoshino
patent: 5594316 (1997-01-01), Hayashida
patent: 5612518 (1997-03-01), Jaminet et al.
patent: 5668355 (1997-09-01), Jaminet et al.
patent: 5736693 (1998-04-01), Piech et al.
patent: 5841082 (1998-11-01), Rivera et al.
patent: 5862887 (1999-01-01), Swaybill et al.
patent: 5949036 (1999-09-01), Kowalczyk et al.
patent: 6467584 (2002-10-01), Yamamoto et al.
patent: 40 16 948 (1991-11-01), None
patent: 0 841 286 (1998-05-01), None

Affiliated with

Also associated with

Rating

Door suspension apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3546746