US4152830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hair-cutting
Assignee: US Philips Corp
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Filing: 1977-12-12
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Granted: 1979-05-08
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Expires: 1997-12-12
Abstract
Abstract A hair-cutting apparatus has a drivable cutter and a stationary cutter, each of which has teeth extending transversely to the direction of driving, the cutting edges of two co-operating teeth enclosing a cutting angle. Mechanism is provided for variably adjusting the position of the two cutters relative to each other in a direction substantially transverse to the direction of driving, the shape of the cutting edges of the respective teeth being such that the mangitude of the cutting angle is variable depending on the adjusted position.
Inventors
- 👤 Albert J. Meijer
- 👤 Albertus P. Rentema
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:38
CPC Classifications
B; B26; B26B; B26B19/00; B26B19/02; B26B19/04; B26B19/06; B26B19/38; B26B19/3846
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
123 words
A hair-cutting apparatus which comprises a drivable cutter; means to drive said drivable cutter; a counter-cutter; the two cutters each having a row of teeth extending substantially transversely to the direction of driving, the cutting edges of two co-operating teeth of the drivable cutter and the counter-cutter enclosing a cutting angle, and the shape of the cutting edges of the teeth of one of said cutters being different from the shape of the cutting edges of the teeth of the other cutter; and means to adjust the position of the two cutters relative to each other in a direction substantially transverse to the direction of driving, the magnitude of the cutting angle thereby varying according to the adjusted position of the two cutters.
Claim 2
Dependent Claim
123 words
A hair-cutting apparatus which comprises a drivable cutter; means to drive said drivable cutter; a counter-cutter; the two cutters each having a row of teeth extending substantially transversely to the direction of driving, the cutting edges of two co-operating teeth of the drivable cutter and the counter-cutter enclosing a cutting angle, and the shape of the cutting edges of the teeth of one of said cutters being different from the shape of the cutting edges of the teeth of the other cutter; and means to adjust the position of the two cutters relative to each other in a direction substantially transverse to the direction of driving, the magnitude of the cutting angle thereby varying according to the adjusted position of the two cutters.
Claim 3
Dependent Claim
26 words
A hair-cutting apparatus according to claim 1, in which the cutting edges of the teeth of said one cutter have a kinked but otherwise rectilinear shape.
Claim 4
Dependent Claim
23 words
A hair-cutting apparatus according to claim 1, in which the cutting edges of the teeth of said one cutter have a curved shape.
Claim 5
Dependent Claim
43 words
A hair-cutting apparatus according to claim 1, in which the adjusting means includes a pivotable bracket journalled in the counter-cutter for supporting and guiding the drivable cutter, and means provided on the underside of the drivable cutter for engagement by the pivotable bracket.
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) | 1982-05-07 | 1982-11-06 | 1983-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-07 | 1986-11-06 | 1987-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-07 | 1990-11-06 | 1991-05-08 | $7700.00 | Window Closed / Lapsed |