US4258470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaving apparatus
Assignee: US Philips Corp
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Filing: 1978-09-28
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Granted: 1981-03-31
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Expires: 1998-09-28
Abstract
Abstract A shaving apparatus has a circular shear plate provided with hair-entrance apertures and a cutting unit associated with and rotatable relative to the shear plate. The cutting unit comprises a cutting member having a circular central body and a hair-pulling member having a circular central portion. Cutters extend from the central body circumference toward the shear plate, with each cutter having a guide wall. A lead cutter is associated with and movable along the guide wall of each cutter, the lead cutter being connected to the central portion circumference by a V-shaped elastically deformable arm. One link of the connecting arm is secured to the central portion and extends tangentially therefrom; and the other limb is connected to the lead cutter. Each connecting arm is elastically deformed so as to urge its lead cutter against the guide wall of the associated cutter.
Inventors
- 👤 Ebbe Boiten
- 👤 Jochem J. de Vries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:11
CPC Classifications
B; B02; B02C; B02C18/00; B02C18/06; B02C18/065; B26; B26B; B26B19/00; B26B19/14; B26B19/141; B26B19/38; B26B19/42; Y; Y10; Y10S; Y10S241/00; Y10S241/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
201 words
A shaving apparatus having a circular shear plate provided with hair-entrance apertures and a cutting unit associated with and rotatable relative to the shear plate; said cutting unit comprising a cutting member having a circular central body, cutters extending from the circumference of said central body toward the shear plate, each such cutter having a guide wall, a hair-pulling member having a circular central portion, lead cutters respectively associated with and movable relative to the cutters along their respective guide walls, and elastically deformable substantially V-shaped connecting arms respectively securing said lead cutters to said central portion along its circumference, one limb of each connecting arm being secured at its end to said central portion and extending in a substantially tangential direction from said central portion, the other limb being connected at its end to the associated lead cutter, each connecting arm being sufficiently elastically deformed so as to urge its respective lead cutter against the guide wall of the associated cutter, the force thereby exerted on each lead cutter by such elastic deformation of the connecting arm having a component normal to said guide wall and a component directed along said guide wall in the direction of the shear plate.
Claim 2
Dependent Claim
201 words
A shaving apparatus having a circular shear plate provided with hair-entrance apertures and a cutting unit associated with and rotatable relative to the shear plate; said cutting unit comprising a cutting member having a circular central body, cutters extending from the circumference of said central body toward the shear plate, each such cutter having a guide wall, a hair-pulling member having a circular central portion, lead cutters respectively associated with and movable relative to the cutters along their respective guide walls, and elastically deformable substantially V-shaped connecting arms respectively securing said lead cutters to said central portion along its circumference, one limb of each connecting arm being secured at its end to said central portion and extending in a substantially tangential direction from said central portion, the other limb being connected at its end to the associated lead cutter, each connecting arm being sufficiently elastically deformed so as to urge its respective lead cutter against the guide wall of the associated cutter, the force thereby exerted on each lead cutter by such elastic deformation of the connecting arm having a component normal to said guide wall and a component directed along said guide wall in the direction of the shear plate.
Claim 3
Dependent Claim
45 words
A shaving apparatus according to claim 1, in which each lead cutter is mounted for rotation about a point near the end of said one limb during its movement along the guide wall of the associated cutter in a direction away from the shear plate.
Claim 4
Dependent Claim
64 words
A shaving apparatus according to claim 1, in which the central portion of the hair-pulling member is secured to the central body of the cutting member by means of a cam-hole joint in order to lock the cutting member and the hair-pulling member against rotation relative to each other as a result of the forces exerted between each cutter and its associated lead cutter.
Claim 5
Dependent Claim
48 words
A shaving apparatus according to claim 3, in which at least one opening is formed in one of said central body and said central portion, and at least one tab is formed in the other of said central body and said central portion for engagement with said opening.
Claim 6
Dependent Claim
26 words
A shaving apparatus according to claim 4, in which said tab is formed in the central body, and said opening is formed in the central portion.
Claim 7
Dependent Claim
13 words
A shaving apparatus according to claim 5, in which the tab is undercut.
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) | 1984-03-30 | 1984-09-29 | 1985-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-30 | 1988-09-29 | 1989-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-30 | 1992-09-29 | 1993-03-31 | $7700.00 | Window Closed / Lapsed |