Patent US3845942A successfully refreshed from Google Patents.
US3845942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torch cutting machine
Assignee: Messer Griesheim GmbH
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Filing: 1972-10-17
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Granted: 1974-11-05
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Expires: 1992-10-17
Abstract
Abstract A torch cutting machine is provided with at least one vertically adjustable torch suspension means, which is secured to a bearing bar movable by means of a drive system with a weight compensation device being connected to the bearing bar.
Inventors
- 👤 G Roeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:48
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/24; B23K9/28; B23K9/287; Y; Y10; Y10T; Y10T408/00; Y10T408/91; Y10T408/92
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
173 words
A torch cutting machine including at least one cutting torch, a vertically arranged bearing bar, said torch mounted to said bearing bar, a drive system operatively connected to said bearing bar for moving said bearing bar and said torch suspended therefrom up and down, said drive system including a drive shaft, said drive system further including transmission means between said bearing bar and said drive shaft whereby the weight of said bearing bar and said torch exerts a torque direction to said drive shaft, said transmission means including a gearing system associated with said bearing bar, a weight compensation device for counter balancing said torque, said weight compensation device including a work roller fixedly mounted on said drive shaft whereby said torque direction is also urged to said work roller, a storage roller mounted generally aligned with said work roller, a spring band wound under tension on said work roller counter to said torque direction, and the end of said spring band remote from said work roller being wound on said storage roller.
Claim 2
Dependent Claim
173 words
A torch cutting machine including at least one cutting torch, a vertically arranged bearing bar, said torch mounted to said bearing bar, a drive system operatively connected to said bearing bar for moving said bearing bar and said torch suspended therefrom up and down, said drive system including a drive shaft, said drive system further including transmission means between said bearing bar and said drive shaft whereby the weight of said bearing bar and said torch exerts a torque direction to said drive shaft, said transmission means including a gearing system associated with said bearing bar, a weight compensation device for counter balancing said torque, said weight compensation device including a work roller fixedly mounted on said drive shaft whereby said torque direction is also urged to said work roller, a storage roller mounted generally aligned with said work roller, a spring band wound under tension on said work roller counter to said torque direction, and the end of said spring band remote from said work roller being wound on said storage roller.
Claim 3
Dependent Claim
22 words
Torch cutting machine according to claim 1, characterized in that a plurality of weight compensation devices are connected to the bearing bar.
Claim 4
Dependent Claim
50 words
Torch cutting machine according to claim 1 wherein said transmission means includes a remote shaft, a first gear train between said drive shaft and said remote shaft, a second gear train between said remote shaft and said bearing bar, and said storage roller being freely mounted on said remote shaft.
Claim 5
Dependent Claim
41 words
Torch cutting machine according to claim 1, characterized in that the spring band wound upon the storage roller exhibits a winding direction which is opposite to the winding direction of the end of the spring band wound upon the work roller.
Claim 6
Dependent Claim
24 words
Torch cutting machine according to claim 4, characterized in that the storage roller is freely mounted upon a further shaft in the drive system.
Claim 7
Dependent Claim
21 words
Torch cutting machine according to claim 5, characterized in that the drive system includes a stepping motor as its drive motor.
Claim 8
Dependent Claim
18 words
Torch cutting machine according to claim 6, characterized in that the stepping motor is operated by alternating voltage.
Claim 9
Dependent Claim
24 words
Torch cutting machine according to claim 6, characterized in that the stepping motor has a field winding connected to a direct voltage supply source.
Claim 10
Dependent Claim
27 words
Torch cutting machine according to claim 8, characterized in that the bearing bar includes longitudinal grooves in which recirculating balls of a ball bearing guide system engage.
References Cited (Backward Citations)
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US2930131A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |