Patent US5843050A successfully refreshed from Google Patents.
US3636627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Razor with oscillating head
Assignee: Individual
•
Filing: 1969-08-11
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Granted: 1972-01-25
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Expires: 1989-08-11
Abstract
Abstract A battery-driven vibratory safety razor in which a batterydriven electric motor in the handle of the razor has a very short eccentrically weighted shaft, and the structure is such that the entire assembly may be made by inserting components through the rear of the handle. A blade carrier and blade support are mounted in a plug in the front end of the handle by means of a central threaded post which is on the blade guard and impales a central hole in the blade carrier. The speed of rotation of the eccentrically weighted motor shaft and the size of the orbit in which the razor head moves are coordinated with observed characteristics of hand motions of shavers to minimize possible cutting of the face during shaving.
Inventors
- 👤 Victor Tiffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:59
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/08; B26B21/14; B26B21/38; Y; Y10; Y10S; Y10S30/00; Y10S30/01
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
151 words
A vibratory razor comprising, in combination: a hollow onepiece handle having a rearward portion and a forward portion, said handle being open at the rear; a removable closure cap engaging said handle and closing said open rear end; an electric cell snugly received in said rearward portion; vibratory means comprising an electric motor driven by said cell snugly received in said forward portion, said motor having a short shaft which is supported only by the motor and extends toward the front of the handle, and an eccentric mass on said shaft immediately adjacent the front of the motor; switch means to selectively close a circuit between said cell and said motor; and a head assembly having a blade guard, a blade carrier and a blade support, said head assembly including means mounting the blade support on the forward portion of said handle spaced forwardly of the motor shaft and the eccentric.
Claim 2
Dependent Claim
151 words
A vibratory razor comprising, in combination: a hollow onepiece handle having a rearward portion and a forward portion, said handle being open at the rear; a removable closure cap engaging said handle and closing said open rear end; an electric cell snugly received in said rearward portion; vibratory means comprising an electric motor driven by said cell snugly received in said forward portion, said motor having a short shaft which is supported only by the motor and extends toward the front of the handle, and an eccentric mass on said shaft immediately adjacent the front of the motor; switch means to selectively close a circuit between said cell and said motor; and a head assembly having a blade guard, a blade carrier and a blade support, said head assembly including means mounting the blade support on the forward portion of said handle spaced forwardly of the motor shaft and the eccentric.
Claim 3
Dependent Claim
20 words
The combination of claim 1 in which the switch means comprises a manually operated screw contact in the closure cap.
Claim 4
Dependent Claim
17 words
The combination of claim 1 including a bayonet slot connection between the closure cap and the handle.
Claim 5
Dependent Claim
40 words
The combination of claim 1 in which the eccentric mass is driven around the shaft approximately 3,600 revolutions per minute to move the head assembly in a circle of oscillation having a diameter of about ten one-thousandths of an inch.
Claim 6
Dependent Claim
27 words
The combination of claim 1 in which the means mounting the head assembly comprises a plug which makes a friction fit in the front of the handle.
Claim 7
Dependent Claim
26 words
The combination of claim 5 in which the plug is integral with the blade support and makes a press fit in the front of the handle.
Claim 8
Dependent Claim
53 words
The combination of claim 1 in which the blade support has a rear end which makes a press fit on the front of the handle and a front end provided with a central threaded bore, and in which the blade carrier and blade guard include a threaded post which screws into said bore.
Claim 9
Dependent Claim
24 words
The combination of claim 7 in which the threaded post is on the blade guard and impales a central hole in the blade carrier.
References Cited (Backward Citations)
US2054418A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |