US3786701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for cutting urethane foam
Assignee: LUDWIG Inc A CORP OF ARK
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Filing: 1971-11-05
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Granted: 1974-01-22
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Expires: 1991-11-05
Abstract
Abstract A cutting device for urethane foam and the like, said device comprising a carriage adapted to advance a bun or slab or urethane material through a cutter assembly including groups of elongated cutting wires which are heated and oscillated longitudinally to clean the wires as the material is advanced, one group of cutting wires being adapted to follow a vertical relief pattern, thereby cutting a corresponding pattern in the material.
Inventors
- 👤 E Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:28
CPC Classifications
B; B26; B26F; B26F3/00; B26F3/06; B26F3/08; B26F3/12; B26D; B26D3/00; B26D3/006; B26D3/28; B26D5/00; B26D5/08; B26D5/14; B26D5/16; Y; Y10; Y10T; Y10T83/00; Y10T83/02; Y10T83/647; Y10T83/6584; Y10T83/6592; Y10T83/6593; Y10T83/6595; Y10T83/869; Y10T83/875; Y10T83/929; Y10T83/9292
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
232 words
A material cutting and shaping device comprising a framework, at least one elongated cutting member carried by said framework, oscillation producing means operatively connected to said framework for producing longitudinal oscillation of said elongated cutting member, carriage means for advancing the material transversely past said cutting member, means supporting said framework for controlled transverse movement of said elongated cutting member relative to the direction the material is advanced, pattern means associated with said carriage means defining a path of said transverse movement of said framework and said cutting member, and follower means associated with said framework for following the shape of said pattern means and transversely moving saId framework in a path corresponding to shape of said pattern means, said carriage means including a movable member carrying the material, said pattern means including a relief surface associated with said movable member, said follower means including a wheel connected to said framework and operatively engaging said relief surface, said means supporting said framework including a pair of oppositely disposed support members, said movable member passing between said support members, said support members being operatively connected to said oscillation producing means for movement substantially parallel to said cutting member, said device including a second cutting member mounted between said oppositely disposed support members to produce a substantially planar cut in the material, each of said cutting members including a cutting wire mounted in tension.
Claim 2
Dependent Claim
232 words
A material cutting and shaping device comprising a framework, at least one elongated cutting member carried by said framework, oscillation producing means operatively connected to said framework for producing longitudinal oscillation of said elongated cutting member, carriage means for advancing the material transversely past said cutting member, means supporting said framework for controlled transverse movement of said elongated cutting member relative to the direction the material is advanced, pattern means associated with said carriage means defining a path of said transverse movement of said framework and said cutting member, and follower means associated with said framework for following the shape of said pattern means and transversely moving saId framework in a path corresponding to shape of said pattern means, said carriage means including a movable member carrying the material, said pattern means including a relief surface associated with said movable member, said follower means including a wheel connected to said framework and operatively engaging said relief surface, said means supporting said framework including a pair of oppositely disposed support members, said movable member passing between said support members, said support members being operatively connected to said oscillation producing means for movement substantially parallel to said cutting member, said device including a second cutting member mounted between said oppositely disposed support members to produce a substantially planar cut in the material, each of said cutting members including a cutting wire mounted in tension.
Claim 3
Dependent Claim
26 words
The structure set forth in claim 1 wherein said cutting wires are held in tension by springs connected to said framework and said support members respectively.
Claim 4
Dependent Claim
153 words
In combination, a framework, a carriage movable along said framework in a first predetermined path and including workpiece supporting means, a support supported for guided movement back and forth in a second predetermined path transverse to said first path, an elongated tension cutting member supported from said support in position extending generally parallel to said second path, support means supporting the opposite end portions of said cutting member from said support for shifting back and forth along further paths extending transverse to said first and second paths, said support means including support members pivotally attached to said support for oscillation relative thereto about parallel axes generally paralleling said first path and anchor means anchoring the opposite ends of said cutting member to said support members at points spaced radially of said parallel axes, said anchor means including means operative to maintain said cutting members tensioned throughout changes in the spacing between said points.
Claim 5
Dependent Claim
153 words
In combination, a framework, a carriage movable along said framework in a first predetermined path and including workpiece supporting means, a support supported for guided movement back and forth in a second predetermined path transverse to said first path, an elongated tension cutting member supported from said support in position extending generally parallel to said second path, support means supporting the opposite end portions of said cutting member from said support for shifting back and forth along further paths extending transverse to said first and second paths, said support means including support members pivotally attached to said support for oscillation relative thereto about parallel axes generally paralleling said first path and anchor means anchoring the opposite ends of said cutting member to said support members at points spaced radially of said parallel axes, said anchor means including means operative to maintain said cutting members tensioned throughout changes in the spacing between said points.
Claim 6
Dependent Claim
16 words
The structure set forth in claim 3 wherein said elongated cutting member includes a cutting wire.
Claim 7
Dependent Claim
47 words
The combination of claim 3 wherein said carriage includes relief pattern means extending along said first path, and follower means carried by said support members engaged with said relief pattern means for oscillating said support members in response to shifting of said carriage along said first path.
Claim 8
Dependent Claim
22 words
The combination of claim 3 wherein said support includes a second elongated cutting member supported therefrom in position paralleling said second path.
Claim 9
Dependent Claim
13 words
The combination of claim 3 wherein said anchor means comprises elongated tension springs.
Claim 10
Dependent Claim
47 words
The combination of claim 7 wherein said carriage includes relief pattern means extending along said first path, and follower means carried by said support members engaged with said relief pattern means for oscillating said support members in response to shifting of said carriage along said first path.
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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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |