US3571550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for a high-frequency welding and cutting press
Assignee: USM Corp
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Filing: 1969-03-17
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Granted: 1971-03-23
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Expires: 1989-03-17
Abstract
Abstract A welding and cutting press having a platen movable transversely over its work support to plural working positions is provided with a control comprising a plurality of sets of adjustable control means for establishing different values of operating conditions at said plurality of working positions of the press.
Inventors
- 👤 Robert Rose
- 👤 Anton Muhlbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 07:53
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/04; B29C65/78; B29C65/7858; B29C65/7861; B29C65/7864; B29C66/00; B29C66/80; B29C66/82; B29C66/824; B29C66/8242; B29C66/83; B29C66/832; B29C66/8322; B29C66/90; B29C66/92; B29C66/924; B29C66/9241; B29C66/92441; B29C66/92443; B29C66/92445; B29C65/48; B29C66/91; B29C66/94; B29C66/944; B29C66/96; B29C66/967; B29C66/9672; B29C66/9674
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
216 words
In a welding and cutting press having a work support: a platen mounted above said support for movement toward and away therefRom and for movement transversely of said support into and out of a plurality of working positions in which the platen is engageable by movement toward the support with dies disposed thereon in a corresponding plurality of adjacent working areas of the support; power operated means for moving said platen; a high-frequency electric power generator; means for connecting the output of said generator to the platen in each working position thereof; in combination therewith; a control connected to said power operated means and to said high-frequency generator and operable selectively to determine the working position of the platen; said control comprising a plurality of sets corresponding to the number of work areas, each set having a plurality of adjustable control means, each set being separately preadjustable and operative upon connection in said control for determining a plurality of operating conditions in accordance with the adjustment of its control means; and means for operatively connecting different ones of said sets in said control in accordance with the working position of said platen, and means operated by said control for selectively establishing a predetermined platen pressure at anyone of several predetermined values for idling, welding, and cutting.
Claim 2
Dependent Claim
216 words
In a welding and cutting press having a work support: a platen mounted above said support for movement toward and away therefRom and for movement transversely of said support into and out of a plurality of working positions in which the platen is engageable by movement toward the support with dies disposed thereon in a corresponding plurality of adjacent working areas of the support; power operated means for moving said platen; a high-frequency electric power generator; means for connecting the output of said generator to the platen in each working position thereof; in combination therewith; a control connected to said power operated means and to said high-frequency generator and operable selectively to determine the working position of the platen; said control comprising a plurality of sets corresponding to the number of work areas, each set having a plurality of adjustable control means, each set being separately preadjustable and operative upon connection in said control for determining a plurality of operating conditions in accordance with the adjustment of its control means; and means for operatively connecting different ones of said sets in said control in accordance with the working position of said platen, and means operated by said control for selectively establishing a predetermined platen pressure at anyone of several predetermined values for idling, welding, and cutting.
Claim 3
Dependent Claim
42 words
Apparatus as in claim 1 in which said control means are operative to automatically establish at each work area: a preadjusted welding contact pressure. welding time; welding power; dwell time for solidification of the weld; and lower limit of the cutting stroke.
Claim 4
Dependent Claim
90 words
Apparatus as in claim 1 in which said power operated means for moving the platen toward and away from said support comprises a pump, a single-action expansible-chamber-type motor and means for connecting said motor and said pump for the supply of pressure fluid to the motor and in which said platen pressure control means includes valve means communicating with said connecting means and operative selectively to establish the fluid pressure at any one of several predetermined values whereby control of the platen pressure for idling, welding, and cutting is afforded.
Claim 5
Dependent Claim
67 words
Apparatus as in claim 1 wherein said power operated means comprises a fluid-pressure-operated motor for moving the platen toward said support and wherein said control additionally comprises a fluid-pressure-operated switch for sensing the pressure of fluid in said motor, and means controlled by said switch in response to the sensing of a predetermined pressure for initiating the preadjusted supply of energy to said platen from said generator.
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) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |