US3934115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for electric singe cutting
Assignee: Individual
•
Filing: 1973-09-25
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Granted: 1976-01-20
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Expires: 1993-09-25
Abstract
Abstract Thin material such as hair or paper is severed by a singeing process using the heated and opposed edges of two thin strips of metal with the edges closely spaced apart to form a slot and with the edges heated by high frequency electrical current or currents flowing along such strips and exhibiting therewith and therebetween skin and proximity effects, and by moving such strips relative to such material so that the material to be singed or severed enters such slot and is therein singed to effect severance by such singeing.
Inventors
- 👤 Gerald H. Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:12
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/0014; A; A45; A45D; A45D26/00; A45D26/0009; B; B26; B26B; B26B21/00; B26B21/40; B26B21/48; B26B27/00; Y; Y10; Y10T; Y10T83/00; Y10T83/283; Y10T83/293
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
164 words
The method of severing a thin material by the application of sufficient heat along a line on each of the opposite sides of said material in back-to-back relationship to sever such material along a line, that comprises inserting said material between two elongated, closely spaced strip electrical conductors, each having in opposition to the other a narrow edge, causing to travel along each of said conductors a high frequency current exhibiting in such travel the skin effect, and said edges of said conductors being sufficiently close enough together and the electron travel of each said currents being opposite one another at any instant such that the currents in said conductors exhibit the proximity effect whereby the current in each conductor is concentrated in the face of the edge of each conductor to heat the edges to the severing temperature for the material, and whereby said inserted material will be severed along such line by the heat generated along and between such opposed narrow edges.
Claim 2
Independent Claim
164 words
The method of severing a thin material by the application of sufficient heat along a line on each of the opposite sides of said material in back-to-back relationship to sever such material along a line, that comprises inserting said material between two elongated, closely spaced strip electrical conductors, each having in opposition to the other a narrow edge, causing to travel along each of said conductors a high frequency current exhibiting in such travel the skin effect, and said edges of said conductors being sufficiently close enough together and the electron travel of each said currents being opposite one another at any instant such that the currents in said conductors exhibit the proximity effect whereby the current in each conductor is concentrated in the face of the edge of each conductor to heat the edges to the severing temperature for the material, and whereby said inserted material will be severed along such line by the heat generated along and between such opposed narrow edges.
Claim 3
Dependent Claim
142 words
A singer cutter comprising: a pair of elongated, closely spaced narrow metallic strips, means for supporting said strips in spaced relation so that parallel opposed edges of will form therebetween a narrow, elongated slot, a source of high frequency current, means connected to each strip for passing high frequency current along each said strip, means electrically connecting said strips and arranged so as to cause said current to flow in a direction in one said strip opposite to that in the other said strip at any instant, said currents being of a sufficient frequency to exhibit a skin effect and said edges being sufficiently close together to exhibit a proximity effect therebetween so as to concentrate said currents in the opposed edges of such slot to heat said edges to the severing temperature of a material to be cut between said edges.
Claim 4
Dependent Claim
142 words
A singer cutter comprising: a pair of elongated, closely spaced narrow metallic strips, means for supporting said strips in spaced relation so that parallel opposed edges of will form therebetween a narrow, elongated slot, a source of high frequency current, means connected to each strip for passing high frequency current along each said strip, means electrically connecting said strips and arranged so as to cause said current to flow in a direction in one said strip opposite to that in the other said strip at any instant, said currents being of a sufficient frequency to exhibit a skin effect and said edges being sufficiently close together to exhibit a proximity effect therebetween so as to concentrate said currents in the opposed edges of such slot to heat said edges to the severing temperature of a material to be cut between said edges.
Claim 5
Dependent Claim
42 words
In the combination of claim 2, said means supporting said strips in spaced relation comprising an interior and an exterior and being formed of a low thermal conductivity material, said strips being coextensive with said low thermal conductivity material and adhering thereto.
Claim 6
Dependent Claim
40 words
The combination of claim 3 in which said means for supporting said strips is in the form of a cylindrical sleeve formed with an axially extending sharp edged slot coextensive with and adjacent to the slot formed by said strips.
Claim 7
Dependent Claim
22 words
The combination of claim 4 in which said sleeve slot is formed by a plane parallel to the axis of said sleeve.
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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) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |