Wireworking – Article making or forming – Spring setting
Reexamination Certificate
2007-09-11
2007-09-11
Tolan, Ed (Department: 3725)
Wireworking
Article making or forming
Spring setting
C140S124000, C267S277000
Reexamination Certificate
active
10546259
ABSTRACT:
The present invention relates to a method wherein a first end and a second end of a pre-tensioned spring are positioned against a first and second stop. A rotating body is first rotated about its longitudinal axis such that the first end engages once in a cam wheel during each rotation, the wheel having at least X+1 teeth and at least one cam that runs parallel with the teeth. The cam wheel thus rotates one tooth further with each rotation of the rotating body. The rotating body is subsequently subjected to pre-tensioning until the cam wheel and its cam lies against a third stop and the first end engages the cam wheel. The rotation is then continued in order to increase the torque.
REFERENCES:
patent: 2418110 (1947-04-01), Burkhardt
patent: 2679167 (1954-05-01), Nichinson
patent: 2722846 (1955-11-01), McDonald
patent: 2934970 (1960-05-01), Parstorfer
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patent: 101 36 155 (2002-04-01), None
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patent: 07042511 (1995-02-01), None
patent: WO 03/087611 (2003-10-01), None
Derwent Abstract—DE-101 36 155 A1; Apr. 4, 2002; Levon Grigorjan, D-49565 Bramsche, Germany.
Derwent Abstract—FR-2 454 128 A1; Nov. 7, 1980; Nauchno- Issedovatelsky Institut Chasovoi Promyshlennosti, UDSSR.
Abstract—DE-916 740; Jan. 7, 1954; Peltzer & Ehlers, Krefeld, Germany.
Abstract—DE-76 703; Jul. 27, 1953; Siemens-Schuckertwerke A.G., Berlin und Erlangen, Germany.
Siemens AG
Tolan Ed
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