US4223437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaving apparatus
Assignee: US Philips Corp
•
Filing: 1978-09-28
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Granted: 1980-09-23
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Expires: 1998-09-28
Abstract
Abstract There is provided a shaving apparatus having a shear plate formed with hair-entrance apertures and a cutting unit associated with and drivable relative to the shear plate. The cutting unit comprises a cutting member having cutters and lead cutters respectively associated with and movable relative to the cutters. In order to obtain a correct positioning of each lead cutter relative to its associated cutter, an extension is provided on either the lead cutter or the cutter for engagement with the cutter or the lead cutter as the case may be.
Inventors
- 👤 Ebbe Boiten
- 👤 Jochem J. de Vries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:39
CPC Classifications
B; B26; B26B; B26B19/00; B26B19/14; B26B19/141; B26B19/38; B26B19/42
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
107 words
A shaving apparatus having a shear plate provided with hair-entrance apertures and a cutting unit associated with and drivable relative to the shear plate; said cutting unit comprising a cutting member, cutters extending from said cutting member toward the shear plate, each cutter having a guide wall, lead cutters respectively associated with and movable relative to the cutters, each lead cutter engaging the guide wall of its associated cutter, and an extension provided on one of the lead cutter and the cutter for engagement with the other of the lead cutter and the cutter in order to position the lead cutter relative to the cutter under pre-tension.
Claim 2
Dependent Claim
107 words
A shaving apparatus having a shear plate provided with hair-entrance apertures and a cutting unit associated with and drivable relative to the shear plate; said cutting unit comprising a cutting member, cutters extending from said cutting member toward the shear plate, each cutter having a guide wall, lead cutters respectively associated with and movable relative to the cutters, each lead cutter engaging the guide wall of its associated cutter, and an extension provided on one of the lead cutter and the cutter for engagement with the other of the lead cutter and the cutter in order to position the lead cutter relative to the cutter under pre-tension.
Claim 3
Dependent Claim
22 words
A shaving apparatus according to claim 1, in which the lead cutter is provided with a tab for engagement with the cutter.
Claim 4
Dependent Claim
22 words
A shaving apparatus according to claim 2, in which the tab is provided with a hook-shaped end for engagement behind the cutter.
Claim 5
Dependent Claim
25 words
A shaving apparatus according to claim 1, in which the cutter is provided with an arm for engagement with a recess in the lead cutter.
References Cited (Backward Citations)
US2314264A
Cited
FR995211A
Cited
US2618055A
Cited
US3088205A
Cited
US3800417A
Cited
US3962784A
Cited
US4151645A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-23 | 1984-03-24 | 1984-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-23 | 1988-03-24 | 1988-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-23 | 1992-03-24 | 1992-09-23 | $7700.00 | Window Closed / Lapsed |