Magnet assisted liftgate strut

Details Magnet assisted liftgate strut Magnet assisted liftgate strut

1991-05-28

1992-06-09

Butler, Douglas C.

Spring devices

Fluid

Expansible-contractible chamber device

188300, 188267, 267 6412, F16F 500, F16F 932

Patent

active

051200309

ABSTRACT:
A strut has a cylinder body having one end closed and a piston rod which reciprocates into and out of the cylinder body through the other end thereof defining retracted and extended positions of the strut. A magnet mounted on the piston rod operates with the other end of the cylinder body in the extended position of the strut to create a magnetic force biasing the strut to the extended position. The magnet allows the strut to move from the extended position if a force sufficient to overcome the magnetic force is applied to the strut. A second embodiment has a spring mounted to the interior of the closed end of the cylinder. A first magnet is mounted on the piston rod creating a magnetic repulsive force between the two magnets urging the magnets away from each other. The spring force urging the first magnet towards the second magnet so that the strut is urged toward the extended position.

REFERENCES:
patent: 3059915 (1962-10-01), Kemelhor
patent: 3240295 (1966-03-01), Martinek et al.
patent: 3770290 (1973-11-01), Bottalico
patent: 3883126 (1975-05-01), Nicholls
patent: 3979109 (1976-09-01), Ishida
patent: 4427188 (1984-01-01), Shimokura et al.
patent: 4458887 (1984-07-01), Shimokura et al.
patent: 4527780 (1985-07-01), Bich
patent: 4570912 (1986-02-01), Dodson et al.
patent: 4634170 (1987-01-01), Lach
patent: 4669711 (1987-06-01), Beer
patent: 4679775 (1987-07-01), Funaki et al.
patent: 4718647 (1988-01-01), Ludwig
patent: 4744548 (1988-05-01), Hathaway
patent: 4779845 (1988-10-01), Bartesch et al.
patent: 4792127 (1988-12-01), Kortgen
patent: 4807855 (1989-02-01), Schuitema
patent: 4824082 (1989-04-01), Schaupp
patent: 4865169 (1989-09-01), Rachels et al.
patent: 4867317 (1989-09-01), Wildemann et al.
patent: 4938520 (1990-07-01), Shelton

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