Patent US3604112A successfully refreshed from Google Patents.
US3604112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for hair cutting
Assignee: Individual
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Filing: 1969-04-29
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Granted: 1971-09-14
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Expires: 1989-04-29
Abstract
Abstract A rotary-blade cutter is combined with an eccentric comb member having rows of teeth, the teeth being made of varying lengths to provide an eccentric effect. The cutter blades when rotated at high speed engage and cut hair ends which are caused to extend through slots in the cutter body. The eccentric comb arrangement operates to provide a variable spacing of the cutting device with respect to the scalp area so that a graduated hair-cutting operation can be efficiently carried out and a desirable trimming effect may be realized.
Inventors
- 👤 Krishin H Bhavnani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:22
CPC Classifications
B; B26; B26B; B26B19/00; B26B19/14; B26B19/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
134 words
A hair-cutting appliance comprising a cylindrical housing formed with openings for engaging hair ends therethrough, a handle portion mounted at one end of the housing for manually adjusting the position of the housing with respect to a scalp area by means of wrist flexion, said handle having an electric motor operatively connected to the power-driven shaft, a powerdriven shaft mounted in the housing, cutter means mounted on the shaft for engaging against inner peripheral surfaces of the housing and shearing hair ends projecting through the housing, and stationary eccentric guide means formed with slots which communicate with the said openings and said guide means located around the housing for supporting the housing in predetermined spaced relationship with respect to a scalp area of an individual in accordance with change in position of the handle.
Claim 2
Dependent Claim
134 words
A hair-cutting appliance comprising a cylindrical housing formed with openings for engaging hair ends therethrough, a handle portion mounted at one end of the housing for manually adjusting the position of the housing with respect to a scalp area by means of wrist flexion, said handle having an electric motor operatively connected to the power-driven shaft, a powerdriven shaft mounted in the housing, cutter means mounted on the shaft for engaging against inner peripheral surfaces of the housing and shearing hair ends projecting through the housing, and stationary eccentric guide means formed with slots which communicate with the said openings and said guide means located around the housing for supporting the housing in predetermined spaced relationship with respect to a scalp area of an individual in accordance with change in position of the handle.
Claim 3
Dependent Claim
131 words
A manually operable hair-cutting appliance comprising a housing formed with openings therein for receiving hair ends therethrough, a handle portion mounted at one end of the housing for manually adjusting the position of the housing with respect to a scalp area, rotary cutter means mounted in the housing for shearing hair ends engaged through the housing, motor means for driving said rotary cutter means mounted in the said handle, revolving evacuating means in the housing for moving cut hair ends away from the cutter means, and eccentric spacing means formed with slots which communicate with the said openings and said spacing means being fixed around the housing for supporting the housing in variably spaced relationship with respect to a scalp area along which a hair-cutting operation is to be carried out.
Claim 4
Dependent Claim
131 words
A manually operable hair-cutting appliance comprising a housing formed with openings therein for receiving hair ends therethrough, a handle portion mounted at one end of the housing for manually adjusting the position of the housing with respect to a scalp area, rotary cutter means mounted in the housing for shearing hair ends engaged through the housing, motor means for driving said rotary cutter means mounted in the said handle, revolving evacuating means in the housing for moving cut hair ends away from the cutter means, and eccentric spacing means formed with slots which communicate with the said openings and said spacing means being fixed around the housing for supporting the housing in variably spaced relationship with respect to a scalp area along which a hair-cutting operation is to be carried out.
Claim 5
Dependent Claim
25 words
A structure according to claim 1 in which the eccentric guide means consists in a split cylindrical sleeve having rows of teeth extending outwardly therefrom.
Claim 6
Dependent Claim
19 words
A structure according to claim 3 in which the teeth in each of the rows are of graduated lengths.
Claim 7
Dependent Claim
30 words
A structure according to claim 4 in which the shorter teeth occur adjacent the edges of the split cylindrical sleeve and the longer teeth occur at points intermediate the edges.
Claim 8
Dependent Claim
194 words
A hair-cutting appliance comprising a cylindrical housing formed with openings for receiving hair ends therethrough, said cylindrical housing having at one end thereof a handle for manually gripping the appliance and turning it into various positions of orientation with respect to a scalp area in response to a natural flexion of the wrist of a user of the appliance, a power-driven shaft rotatably mounted in the housing, a motor received in the handle and operatively connected to the power-driven shaft, cutter means mounted on the shaft for engaging against an inner peripheral surface of the housing and shearing guide comb means fixed around the housing and formed with slots for guiding hair ends into the openings in the cylindrical housing, and said stationary guide comb presenting a series of spaced rows of teeth for engagement with a scalp area, the teeth in each row being of a length which is graduated with respect to teeth in an adjacent row, thereby to vary the lengths of hair ends guided into the housing in accordance with change in position of the guide comb during said natural flexion of the wrist of a user of the appliance.
Claim 9
Dependent Claim
194 words
A hair-cutting appliance comprising a cylindrical housing formed with openings for receiving hair ends therethrough, said cylindrical housing having at one end thereof a handle for manually gripping the appliance and turning it into various positions of orientation with respect to a scalp area in response to a natural flexion of the wrist of a user of the appliance, a power-driven shaft rotatably mounted in the housing, a motor received in the handle and operatively connected to the power-driven shaft, cutter means mounted on the shaft for engaging against an inner peripheral surface of the housing and shearing guide comb means fixed around the housing and formed with slots for guiding hair ends into the openings in the cylindrical housing, and said stationary guide comb presenting a series of spaced rows of teeth for engagement with a scalp area, the teeth in each row being of a length which is graduated with respect to teeth in an adjacent row, thereby to vary the lengths of hair ends guided into the housing in accordance with change in position of the guide comb during said natural flexion of the wrist of a user of the appliance.
Claim 10
Dependent Claim
36 words
A structure according to claim 6 in which the series of spaced rows of teeth include centrally located rows of teeth of maximum length and rows of teeth at either side thereof of progressively smaller lengths.
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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) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |