Patent US2859187A successfully refreshed from Google Patents.
US3781990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry shaver with selectively engagable short and long hair cutters
Assignee: US Philips Corp
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Filing: 1972-07-24
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Granted: 1974-01-01
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Expires: 1992-07-24
Abstract
Abstract A dry shave appliance having a shaver part composed of at least one long hair cutting part with upper and lower cutters and a motor with a drive member. A coupling piece and an operating element are also provided with the coupling piece displaceable by the operating element positionable in at least two working positions.
Inventors
- 👤 A Loner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:16
CPC Classifications
B; B26; B26B; B26B19/00; B26B19/26; B26B19/265
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
128 words
In a dry shaver including a rotary shaver sub-assembly having a fixed shear plate and a rotary cutter, a trimmer subassembly having a fixed upper cutter and a reciprocating lower cutter, an electric motor with a rotary output drive shaft for driving said rotary cutter and said lower cutter, a casing housing said subassemblies and motor, the improvement in combination therewith of coupling means comprising, a coupling piece rotated by said shaft and being displaceable between first position where it is engaged to the rotary cutter for driving same, and second position where it is engaged to the lower cutter for driving same, an operating element engaged to said coupling piece, this element being displaceable between first and second positions for moving said coupling piece between corresponding positions.
Claim 2
Dependent Claim
128 words
In a dry shaver including a rotary shaver sub-assembly having a fixed shear plate and a rotary cutter, a trimmer subassembly having a fixed upper cutter and a reciprocating lower cutter, an electric motor with a rotary output drive shaft for driving said rotary cutter and said lower cutter, a casing housing said subassemblies and motor, the improvement in combination therewith of coupling means comprising, a coupling piece rotated by said shaft and being displaceable between first position where it is engaged to the rotary cutter for driving same, and second position where it is engaged to the lower cutter for driving same, an operating element engaged to said coupling piece, this element being displaceable between first and second positions for moving said coupling piece between corresponding positions.
Claim 3
Dependent Claim
78 words
A shaver according to claim 1 wherein said coupling piece is rotated about an axis by said output shaft, and comprises a first part for transmitting said shaft rotation to said rotary cutter, and a second part formed as an eccentric, the shaver further comprising a pivotally mounted lever having a first arm engaged by said eccentric part and a second arm engaGing said lower cutter, whereby said eccentric drives said lever and lower cutter in reciprocating motion.
Claim 4
Dependent Claim
32 words
A shaver according to claim 1 wherein said motor and coupling piece are fixed together, and said operating element moves both the coupling piece and motor between said first and second positions.
Claim 5
Dependent Claim
75 words
A dry shaver according to claim 2 wherein said coupling piece is tubular, said first part thereof has a round outer surface, said second part is axially spaced from the first part and has an eccentric outer surface, said motor shaft extends through and is secured to said coupling piece, and said first arm of the lever selectively engages said round and eccentric surfaces, and is driven in reciprocation only when it engages the eccentric.
References Cited (Backward Citations)
US2300143A
Cited
CH353652A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |