US4031618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric shaver
Assignee: MANSFIELD R
•
Filing: 1976-01-15
•
Granted: 1977-06-28
•
Expires: 1996-01-15
Abstract
Abstract An electric dry shaver has a shaving head assembly provided with reel-type cutters, a vacuum system within the casing of the shaver both for drawing individual hairs into cutting position and exhausting cut hairs from the casing; and integral lotion dispensing means for dispensing lotion automatically to the shaving head assembly.
Inventors
- 👤 Robin Mansfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:22
CPC Classifications
B; B26; B26B; B26B19/00; B26B19/38; B26B19/40; B26B19/44
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
233 words
An electric dry shaver comprising a casing, a shaving head assembly arranged at the forward end of said casing, said shaving head assembly comprising a slotted cutter guard, a pair of cylindrical reel-type cutters each cylindrical reel-type cutter having an integral worm gear intermediate opposite ends thereof, trunnions at opposite ends, respectively, of each cylindrical cutter arranged to rotatably mount said cylindrical reel-type cutters in over-and-under spaced parallel relationship within said slotted cutter guard with the longitudinal axis of each cylindrical cutter at substantially right angles to the slots in said slotted cutter guard, a vacuum chamber in said shaving head assembly rearwardly of said cylindrical reel-type cutters, a motor mounted within said casing rearwardly of said vacuum chamber, said motor having a drive shaft arranged to extend forwardly into said shaving head assembly, a worm gear integral with the forward end of said drive shaft the said worm gear of said drive shaft arranged in driving engagement with the respective worm gears of said cylindrical reel-type cutters thereby to rotate said cylindrical reel-type cutters, a disc-like vacuum impeller afixed to said drive shaft within said vacuum chamber, a discharge port in the rear end of said casing, internal passage within said casing arranged to connect said vacuum chamber to said discharge port, said drive shaft arranged to rotate said disc-like vacuum impeller to create a vacuum force within said shaving head assembly.
Claim 2
Dependent Claim
233 words
An electric dry shaver comprising a casing, a shaving head assembly arranged at the forward end of said casing, said shaving head assembly comprising a slotted cutter guard, a pair of cylindrical reel-type cutters each cylindrical reel-type cutter having an integral worm gear intermediate opposite ends thereof, trunnions at opposite ends, respectively, of each cylindrical cutter arranged to rotatably mount said cylindrical reel-type cutters in over-and-under spaced parallel relationship within said slotted cutter guard with the longitudinal axis of each cylindrical cutter at substantially right angles to the slots in said slotted cutter guard, a vacuum chamber in said shaving head assembly rearwardly of said cylindrical reel-type cutters, a motor mounted within said casing rearwardly of said vacuum chamber, said motor having a drive shaft arranged to extend forwardly into said shaving head assembly, a worm gear integral with the forward end of said drive shaft the said worm gear of said drive shaft arranged in driving engagement with the respective worm gears of said cylindrical reel-type cutters thereby to rotate said cylindrical reel-type cutters, a disc-like vacuum impeller afixed to said drive shaft within said vacuum chamber, a discharge port in the rear end of said casing, internal passage within said casing arranged to connect said vacuum chamber to said discharge port, said drive shaft arranged to rotate said disc-like vacuum impeller to create a vacuum force within said shaving head assembly.
Claim 3
Dependent Claim
31 words
An electric dry shaver according to claim 1 wherein the forward end of said motor drive shaft is rotatably supported by said cutter guard in driving engagement with said reel-type cutters.
Claim 4
Dependent Claim
58 words
An electric dry shaver according to claim 2 wherein said rotating disc-type impeller is provided with fins and arranged to create a vacuum force in said vacuum chamber sufficient to draw individual hairs into cutting position and to exhaust cut hairs from said vacuum chamber by way of said internal passages and the discharge port of said casing.
Claim 5
Dependent Claim
74 words
An electric dry shaver according to claim 1 wherein said casing is constructed and arranged with lotion dispensing means comprising a chamber having a flexible wall, a conduit arranged to connect the lotion chamber to said shaving head assembly, and rotatable means arranged to be actuated automatically by said disc-like vacuum impeller to engage and deflect the said flexible wall of said lotion chamber thereby to dispense lotion therefrom to said shaving head assembly.
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) | 1980-06-27 | 1980-12-27 | 1981-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-27 | 1984-12-27 | 1985-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-27 | 1988-12-27 | 1989-06-28 | $7700.00 | Window Closed / Lapsed |