Patent US2251206A successfully refreshed from Google Patents.
Patent US3715803A successfully refreshed from Google Patents.
← Back to Patent Explorer
US3715803A Expired / Lapsed US ⏱️ 0.0 years remaining

Rotary dry shaver with tiltable shear plates

Assignee: GREIGG EDWIN E SILVER SPRING
•
Filing: 1971-02-16
•
Granted: 1973-02-13
•
Expires: 1991-02-16
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A rotary dry shaver comprising a component housing, a pair of tiltable cutting elements with exposed apertured shear plates, a bladed rotary cutting member cooperative with the inner surface of the shear plates and coactively tiltable therewith, a driving shaft for the cutting members, the shear plates and cutting members normally disposed at a right angle to the shaft axes, the cutting elements independently supported axially on a spherically radiused surface whereon they are freely tiltable at diverse angles relative to the shaft axes, a removable cutting element retaining frame with apertures through which a portion of each of the cutting elements projects, the outer surface of the projecting portion correspondingly spherically radiused and fittingly and tiltably retained by and in the frame apertures, a chamber in the housing beneath said frame to receive hair clippings, apertures through the housing sidewalls communicating with the chamber, hinged side plates to open and close the wall apertures, the side plates and said frame comprising cooperative engaging portions by which the frame is positively secured in place when the side plates are closed, the shear plate apertures and the blades of the cutting member opposedly two-edged for cutting in either rotational direction, a driving motor, means for reversing the rotation of the cutting member at desired intervals, a toothed edge reciprocal hair trimming clipper embodied in the housing, the toothed edge of which may be projected from or retracted into the housing, the clipper being operably connected to a driving element when it is projected and disconnected when it is retracted.

Inventors

  • 👤 T Tyler

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 21:53
CPC Classifications
B; B26; B26B; B26B19/00; B26B19/14; B26B19/145

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 71 words
In a rotary dry shaver, a component housing, a tiltable cutting element comprising an apertured shear plate exposedly retained in the housing, a rotary cutting member cooperative with the shear plate and coactively tiltable therewith, a driving shaft for the cutting member, means to bias the cutting member into contact with the shear plate, and the said cutting element tiltably supported axially by means separate from the cutting member biasing means.
Claim 2
Dependent Claim 71 words
In a rotary dry shaver, a component housing, a tiltable cutting element comprising an apertured shear plate exposedly retained in the housing, a rotary cutting member cooperative with the shear plate and coactively tiltable therewith, a driving shaft for the cutting member, means to bias the cutting member into contact with the shear plate, and the said cutting element tiltably supported axially by means separate from the cutting member biasing means.
Claim 3
Dependent Claim 71 words
In a rotary dry shaver, a component housing, a tiltable cutting element comprising an apertured shear plate exposedly retained in the housing, a rotary cutting member cooperative with the shear plate and coactively tiltable therewith, a driving shaft for the cutting member, means to bias the cutting member into contact with the shear plate, and the said cutting element tiltably supported axially by means separate from the cutting member biasing means.
Claim 4
Dependent Claim 71 words
In a rotary dry shaver, a component housing, a tiltable cutting element comprising an apertured shear plate exposedly retained in the housing, a rotary cutting member cooperative with the shear plate and coactively tiltable therewith, a driving shaft for the cutting member, means to bias the cutting member into contact with the shear plate, and the said cutting element tiltably supported axially by means separate from the cutting member biasing means.
Claim 5
Dependent Claim 24 words
The structure defined in claim 1, wherein the said means by which the cutting element is tiltably supported comprises a spherically radiused supporting surface.
Claim 6
Dependent Claim 31 words
The structure defined in claim 1, wherein the said cutting element is substantially cup-shaped, and a portion of the inner surface thereof spherically radiused and tiltably seated on the supporting means.
Claim 7
Dependent Claim 49 words
The structure defined in claim 1, including a cutting element retaining frame provided with an aperture through which a portion of the said element projects, the element having an outer surface a portion of which is spherically radiused and fittingly and tiltably retained by and in the frame aperture.
Claim 8
Dependent Claim 50 words
The structure as defined in claim 3 wherein the driving shaft is connected at one end to the cutting member at a point concentric with the spherical center of the said spherically radiused surface on which the cutting element is supported, the cutting member being universally tiltable on the shaft.

References Cited (Backward Citations)

US2900720A Cited
US2952908A Cited
US3032873A Cited
US3035346A Cited
US3581392A Cited
US3494031A Cited
US3694915A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-02-13 1976-08-14 1977-02-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-02-13 1980-08-14 1981-02-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-02-13 1984-08-14 1985-02-13 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag