US3797344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromechanical apparatus for cutting coils of polyester foam strip or the like
Assignee: Individual
•
Filing: 1972-12-15
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Granted: 1974-03-19
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Expires: 1992-12-15
Abstract
Abstract An electromechanical apparatus for subdividing a coil of polyester foam material into one or more coils. The apparatus includes a carriage with V-shaped support surfaces for supporting the coil. A plurality of wheels extend from the carriage for support by stationary tracks that extend in a direction normal to the axis of the coil. An electrically heated wire is connected at its ends to springs and electric insulators that are carried by a C-shaped frame arranged at one side of the carriage. The springs compensate for length changes of the wire during heating thereof. The wire extends through a slot in the carriage such that upon displacement of the carriage by a drive means toward the wire, a coil located on the carriage is divided into predetermined widths. A power control circuit is used for heating the resistance wire.
Inventors
- 👤 H Hattman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:36
CPC Classifications
B; B26; B26D; B26D3/00; B26D3/006; B26D3/16; B26D3/161; B26F; B26F3/00; B26F3/06; B26F3/08; B26F3/12; Y; Y10; Y10S; Y10S83/00; Y10S83/929; Y10S83/949; Y10S83/95; Y10T; Y10T83/00; Y10T83/283; Y10T83/293; Y10T83/505; Y10T83/647; Y10T83/6569; Y10T83/6584; Y10T83/66; Y10T83/6608; Y10T83/6614; Y10T83/6616; Y10T83/929; Y10T83/9292
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
120 words
An apparatus for severing a coil of polyester foam strip or the like into a plurality of coils each having preselected width, comprising: carriage means for supporting said coil such that the axis of the coil extends in a preselected direction; a wire support frame including arms extending toward said carriage means; an electrically heated wire including means for yieldably supporting said wire from at least one of said arms; said wire extending in a direction normal to the axis of said coil; and drive means for producing relative displacement between said coil of strip and Said electrically heated wire thereby to pass the heated wire through the convolution of coiled strip and sever the coil into smaller width coils.
Claim 2
Independent Claim
120 words
An apparatus for severing a coil of polyester foam strip or the like into a plurality of coils each having preselected width, comprising: carriage means for supporting said coil such that the axis of the coil extends in a preselected direction; a wire support frame including arms extending toward said carriage means; an electrically heated wire including means for yieldably supporting said wire from at least one of said arms; said wire extending in a direction normal to the axis of said coil; and drive means for producing relative displacement between said coil of strip and Said electrically heated wire thereby to pass the heated wire through the convolution of coiled strip and sever the coil into smaller width coils.
Claim 3
Dependent Claim
24 words
An apparatus according to claim 1 wherein said carriage means comprise plates arranged to define V-shaped support surfaces for supporting said coil of strip.
Claim 4
Dependent Claim
39 words
An apparatus according to claim 2 wherein said carriage means further comprise a plurality of wheels, supported by said carriage, a plurality of tracks receiving said wheels for horizontal displacement of said carriage means relative to said heated wire.
Claim 5
Dependent Claim
47 words
An apparatus according to claim 3 wherein said V-shaped support surfaces are constructed and arranged to support said coil of strip such that the said axis thereof extends in a horizontal direction and further characterized as normal to the direction of horizontal displacement of the carriage means.
Claim 6
Dependent Claim
33 words
An apparatus according to claim 4 wherein said drive means further comprise an elongated feed screw extending parallel to said tracks, a nut threadably engaging said feed screw and supported by said carriage.
Claim 7
Dependent Claim
32 words
An apparatus according to claim 5 wherein said drive means further comprise limit switch means positioned at spaced apart locations for detecting travel of said carriage means following severing of said coil.
Claim 8
Dependent Claim
45 words
An apparatus according to claim 4 wherein said V-shaped support surfaces further comprise an elongated slot extending parallel to said tracks, said slot receiving said electrically heated wire for connection to one of said arms of the wire support frame disposed below said carriage means.
Claim 9
Dependent Claim
28 words
An apparatus according to claim 7 wherein said means for yieldably supporting said wire further include support members for resiliently connecting said wire to said wire support frame.
Claim 10
Dependent Claim
37 words
An apparatus according to claim 8 further comprising an electric insulator interconnecting each end of said electrically heated wire to said resilient means, and said resilient means comprising coil spring supported by the arms of said frame.
Claim 11
Dependent Claim
35 words
An apparatus according to claim 9 further comprising a control for delivering electric power to the opposite ends of said electrically heated wire, and a step down transformer for supplying electric power to said control.
Claim 12
Dependent Claim
35 words
An apparatus according to claim 10 further comprising limit switch means for detecting travel of said carriage means following severing of a coil, and controller means for sequentially actuating said transformer and said drive means.
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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |