US3797206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Binding dry shaved hair shavings
Assignee: Braun GmbH
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Filing: 1972-08-31
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Granted: 1974-03-19
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Expires: 1992-08-31
Abstract
Abstract A d.c. voltage source is connected between the hair dust collecting electrode and the outer grooved or perforated cutting member of the shearing head of a dry shaver. The hair protruding through the grooves of the outer cutting member is polarized into an electric dipole; the projecting hair portion which has opposite polarity than the collecting electrode is subsequently cut off by the movable inner cutting member and is transferred by electrical forces of the field to the collecting electrode. This electrode may be provided with an exchangeable coating of an adhesive.
Inventors
- 👤 Anna Otta
- 👤 A Luberichs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:25
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/22; B03; B03C; B03C3/00; B03C3/32; Y; Y10; Y10S; Y10S55/00; Y10S55/24; Y10S55/39
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
150 words
A dry shaving apparatus comprising a shearing head, outer and inner cutting means, a collecting electrode disposed in said shearing head in spaced relation from said outer and inner cutting means, said outer cutting means and said collecting electrode being connectable to a voltage source to produce an electric field therebetween for polarizing the hair protruding through said outer cutting means to induce opposite charges thereon like in a dipole, said inner cutting means including a movable support member of dielectric material and cutting blades discretely arranged on said support member, the structure of said inner cutting means snd said support member allowing the flux of the electric field to extend substantially unobstructedly between said outer cutting means and said collecting electrode wherein said collecting electrode is provided with an adhesive layer for retaining said hair shavings, said blades of said inner cutting means are arranged in a grid-like configuration.
Claim 2
Dependent Claim
150 words
A dry shaving apparatus comprising a shearing head, outer and inner cutting means, a collecting electrode disposed in said shearing head in spaced relation from said outer and inner cutting means, said outer cutting means and said collecting electrode being connectable to a voltage source to produce an electric field therebetween for polarizing the hair protruding through said outer cutting means to induce opposite charges thereon like in a dipole, said inner cutting means including a movable support member of dielectric material and cutting blades discretely arranged on said support member, the structure of said inner cutting means snd said support member allowing the flux of the electric field to extend substantially unobstructedly between said outer cutting means and said collecting electrode wherein said collecting electrode is provided with an adhesive layer for retaining said hair shavings, said blades of said inner cutting means are arranged in a grid-like configuration.
Claim 3
Dependent Claim
39 words
The device according to claim 1 wherein the top surface of said collecting electrode is substantially smooth and covered by an exchangeable sheet of dielectric material, said dielectric sheet being provided with honeycombed shaped recesses filled with adhesive material.
Claim 4
Dependent Claim
33 words
The device as claimed in claim 1, wherein said collector electrode is an electricAlly conductive body having a top surface thereof provided with honeycombed recesses, said recesses being filled with said adhesive material.
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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) | 1977-03-18 | 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 |