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US 4,360,137 AGranted
Planetary-gear drive for looper
AssigneeBWG Bergwerk- und Walzwerk-Maschinenbau GmbH
InventorsOskar Noe, Rolf Noe, Andreas Noe
Life of this patent
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Abstract
A looper has a fixed support carrying a plurality of guides and a movable support carrying a plurality of guides, with a strip being looped back and forth between the guides of the two supports. The movable support is connected via a cable or chain to a winch carried on a rotary output member of a planetary-gear transmission having two inputs. One of these inputs is rotated continuously at a predetermined speed while the other input is rotated at a variable speed determined by the rotation rate of the output member.
Claims7
A strip looper comprising:
- a relatively fixed support carrying a set of guides;
- a movable support carrying another set of guides, at least one of said sets having more than one such guide, the strip being looped back and forth over said guides;
- a rotary member having a periphery;
- means connecting said periphery to said movable support for displacement thereof relative to said fixed support at a velocity dependent on the peripheral speed of said periphery and in a direction dependent on the rotation sense of said periphery;
- a planetary-gear transmission having a rotary output connected to said rotary member, two separate rotary inputs, and continuous-mesh gearing interconnecting said inputs and outputs;
- a substantially fixed-speed drive motor connected to one of said inputs;
- and
- a variable-speed drive motor connected to the other of said inputs.
5 more elements
Dependencies are inferred from the claim text.