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:
May. 13, 1997
Filed:
Mar. 14, 1996
Hans-Joachim Buscher, Dusseldorf, DE;
Dennis D Schwaiger, Whitmore Lake, MI (US);
Kiekert AG, Heiligenhaus, DE;
Abstract
A power actuator is used with a door latch having a threaded spindle, a nut axially displaceable by the spindle, and a coupling element connected to the nut and displaceable thereby to lock and unlock the latch. The actuator has a reversible electric motor having an output shaft defining a main axis and rotatable in either direction thereabout, an input wheel fixed on the shaft and provided with an eccentric coupling pin, and an intermediate wheel rotatable about the main axis and provided with an eccentric pivot. An output wheel rotatable about the main axis has a gear meshing with a gear of the threaded spindle and is provided with a pair of angularly offset abutments defining an orbit on rotation of the output wheel. A coupling element mounted on the intermediate-wheel pivot is provided with respective angularly offset coupling formations engageable with the output-wheel abutments and has a formation angularly engaging the input-wheel coupling pin. A spring urges the coupling element into a position with the coupling formations inside the orbit and the input wheel decoupled from the output wheel. The coupling element is movable angularly against the force of the spring about the eccentric pivot on rotation of the input wheel to end coupling positions in each of which a respective one of the coupling formations engages the respective abutment and couples the input wheel to the output wheel for joint rotation about the axis.