Patent US3626796A successfully refreshed from Google Patents.
US3626796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet material cutting apparatus with fail-safe means
Assignee: Gerber Technology LLC
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Filing: 1970-04-01
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Granted: 1971-12-14
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Expires: 1990-04-01
Abstract
Abstract An apparatus for cutting sheet material includes a cutter mounted on an automatically controlled carriage for movement along a desired line of cut relative to an associated surface for supporting one or more layers of material to be cut. The cutter includes a reciprocating cantilevered cutting tool, and means are provided for immediately withdrawing the cutting tool from the material being cut in the event of a power failure to prevent it from cutting as it and the cutter coast uncontrolled to a stop.
Inventors
- 👤 David R Pearl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:28
CPC Classifications
B; B26; B26D; B26D7/00; B26D7/22; Y; Y10; Y10S; Y10S83/00; Y10S83/929; Y10S83/936; Y10S83/939; Y10S83/94; Y10T; Y10T83/00; Y10T83/081; Y10T83/647; Y10T83/6584; Y10T83/6592; Y10T83/6593; Y10T83/6603; Y10T83/869; Y10T83/8748; Y10T83/8776
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
149 words
An apparatus for cutting sheet material, said apparatus comprising means defining a material supporting surface, a cutter having a cantilevered cutting tool, a support for said cutter, electrically powered means for automatically moving said cutter support and said supporting surface relative to one another to cause said tool to follow a desired line of cut on material supported by said supporting surface, means supporting said cutter for movement relative to said support between a first position at which said tool is in cutting engagement with the material supported by said supporting surface and a second position at which said tool is out of cutting engagement with the material supported by said supporting surface, means for driving said cutter between said first and second positions relative to said support, and means for moving said cutter to said second position immediately upon a failure of power to said electrically powered means.
Claim 2
Independent Claim
149 words
An apparatus for cutting sheet material, said apparatus comprising means defining a material supporting surface, a cutter having a cantilevered cutting tool, a support for said cutter, electrically powered means for automatically moving said cutter support and said supporting surface relative to one another to cause said tool to follow a desired line of cut on material supported by said supporting surface, means supporting said cutter for movement relative to said support between a first position at which said tool is in cutting engagement with the material supported by said supporting surface and a second position at which said tool is out of cutting engagement with the material supported by said supporting surface, means for driving said cutter between said first and second positions relative to said support, and means for moving said cutter to said second position immediately upon a failure of power to said electrically powered means.
Claim 3
Dependent Claim
45 words
An apparatus for cutting sheet material as set forth in claim 1 further characterized by said means for moving said cutter to said second position immediately upon a power failure including biasing means for biasing said cutter toward said second position relative to said support.
Claim 4
Dependent Claim
91 words
An apparatus for cutting sheet material as set forth in claim 2 further characterized by said means for driving said cutter between said first and second positions relative to said support including a motor and a drive train between said motor and said cutter, and said means for moving said cutter to said second position immediately upon a power failure including an electromagnetic clutch in said drive train which clutch upon deenergization releases said cutter from said motor to allow said biasing means to move said cutter toward said second position.
Claim 5
Dependent Claim
108 words
In an electrically operated automatically controlled apparatus for cutting sheet material positioned on a supporting surface, the combination comprising a cutter having a cutting tool, a support frame for said cutter, means supporting said cutter on said support frame for movement toward and away from said supporting surface, first biasing means between said cutter and saId support frame for biasing said cutter away from said supporting surface, a drive train for moving said cutter toward and away from said supporting surface, an electromagnetic clutch included in said drive train, and a motor connected to said drive train for powering it to move said cutter through said electromagnetic clutch.
Claim 6
Dependent Claim
108 words
In an electrically operated automatically controlled apparatus for cutting sheet material positioned on a supporting surface, the combination comprising a cutter having a cutting tool, a support frame for said cutter, means supporting said cutter on said support frame for movement toward and away from said supporting surface, first biasing means between said cutter and saId support frame for biasing said cutter away from said supporting surface, a drive train for moving said cutter toward and away from said supporting surface, an electromagnetic clutch included in said drive train, and a motor connected to said drive train for powering it to move said cutter through said electromagnetic clutch.
Claim 7
Dependent Claim
17 words
The combination set forth in claim 4 further characterized by said motor being a self-braking electric motor.
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) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |