US4360137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planetary-gear drive for looper
Assignee: Braunschweigische Wissenschaftliche Gesellschaft
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Filing: 1980-07-15
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Granted: 1982-11-23
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Expires: 2000-07-15
Abstract
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.
Inventors
- 👤 Oskar Noe
- 👤 Rolf Noe
- 👤 Andreas Noe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:10
CPC Classifications
B; B65; B65H; B65H18/00; B65H18/08; B65H18/10; B65H18/103; B21; B21C; B21C49/00; B65H20/00; B65H20/30; B65H20/32; B65H20/34; B65H51/00; B65H51/20; G; G11; G11B; G11B7/00; G11B7/12; B65H2301/00; B65H2301/50; B65H2301/51; B65H2301/511; B65H2403/00; B65H2403/40; B65H2403/48; B65H2403/481; B65H2408/00; B65H2408/20; B65H2408/21; B65H2408/217; B65H2408/2171
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
135 words
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.
Claim 2
Dependent Claim
135 words
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.
Claim 3
Dependent Claim
24 words
The looper defined in claim 1, further comprising control means for operating said drive motors at respective output speeds above respective predetermined minimum speeds.
Claim 4
Dependent Claim
23 words
The looper defined in claim 2, further comprising tension bridles flanking said looper and engaging said strip upstream and downstream of said looper.
Claim 5
Dependent Claim
34 words
The looper defined in claim 3 wherein said control means is connected to said bridles for operating said variable-speed motor at a rate dependent on the difference between the throughput rates of said bridles.
Claim 6
Dependent Claim
45 words
The looper defined in claim 1 wherein said gearing includes a sun gear, a planet gear meshing with and orbital about said sun gear, a planet carrier carrying said planet gear, and a ring gear meshing with said planet gear and surrounding said sun gear.
Claim 7
Dependent Claim
16 words
The looper defined in claim 5 wherein one of said gears is one of said inputs.
Claim 8
Dependent Claim
22 words
The looper defined in claim 5 wherein said carrier is said output and the other of said gears is the other input.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-22 | 1986-05-24 | 1986-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-22 | 1990-05-24 | 1990-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-22 | 1994-05-24 | 1994-11-23 | $7700.00 | Window Closed / Lapsed |