Static free magnetic holding and release means
AssigneeRing Tool and Die Company
InventorAngelo Turnas
Life of this patent
Estimating the term…
Abstract
A static free permanent magnet holding and release means for use in various machines, such as a seat belt testing machine. The permanent magnet means is operable between an energized condition and a deenergized condition. A preloaded holding means is movable to a first position in engagement with said permanent magnet means for a holding engagement with the permanent magnet means when it is in an energized condition, and movable to a second position by the preload thereon when the permanent magnet means is in a de-energized position for releasing the holding means.
Claims8
In a static free magnetic holding and release means, the combination of:
- a. a permanent magnet means operable between an energized condition and a de-energized condition;
- b. a preloaded holding means movable to a first position in engagement with said permanent magnet means for a holding engagement with the permanent magnetic means when it is in an energized condition, and movable to a second position by the preload thereon when the permanent magnet means is in a de-energized condition for releasing the holding means;
- c. preload means for imparting a preload in one direction on the holding means to move it to said second position when the permanent magnet is in a de-energized condition, and,
- d. said preloaded holding means including a steel plate engageable by said permanent magnet means, and an aluminum plate secured to the steel plate for operative connection to said preload means.
In a seat belt testing machine, the combination comprising:
- a. a support table;
- b. a static free permanent magnet holding and release means mounted on said support table and operable between an energized holding condition and a de-energized release condition;
- c. a movable slide plate movably supported on said table for carrying a seat belt retractor secured thereto;
- d. retainer means adjacent the holding and release means for releasably retaining the free end of a seat belt mounted on the retractor on the movable slide plate;
- e. preload means for imparting a preload in one direction on the movable slide plate to move it to a retracted position;
- and,
- f. a power means for moving the movable slide plate to an advanced position in holding engagement with the magnetic holding and release means, when it is in a holding condition, against the bias of the preload means, whereby when the permanent magnet means is changed to the release condition the slide plate is retracted by the preload means to impart a test pull on said seat belt and retractor.
Dependencies are inferred from the claim text.