The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 23, 1993
Filed:
Oct. 25, 1991
Rolf Lauterwald, Pettendorf, DE;
Maschinenfabrik Reinhausen GmbH, Regensburg, DE;
Abstract
A force-storing actuator for connection to a rotor of a step transformer has a central upright axle connected to the rotor and rotatable about its axis, and upper and lower input wheels fixed rotationally to each other and rotatable on the shaft about the axis. Respective upper and lower drive elements fixed underneath and atop the input wheels flank upper and lower force-storing levers rotatable on the shaft between the input wheels and juxtaposed with the input wheels. Each lever is angularly engageable with the respective drive element. A spring has outer ends connected to the two levers offset from the axis. An output wheel fixed on the shaft above the upper input wheel carries an output element fixed on the shaft axially between the levers and engageable angularly with both of the levers. Latching formations on the output wheel are engageable by at least one latch pawl movable between a blocking position latchingly engaging the formations to angularly arrest the output wheel and a freeing position out of engagement with the output wheel. A cam on the upper drive wheel is engageable with the pawl for displacing it between its positions. When the input wheels are rotated with the pawl in the blocking position the spring is tensioned and the cam is then brought into engagement with the pawl to displace it briefly into the freeing position to allow rotation of the output wheel and shaft and relaxation of the spring.