Patent US2170144A successfully refreshed from Google Patents.
← Back to Patent Explorer
US3220108A Expired / Lapsed US ⏱️ 0.0 years remaining

Rotary blade razor

Assignee: Individual
•
Filing: 1962-12-17
•
Granted: 1965-11-30
•
Expires: 1982-12-17
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Richard W Maccarthy

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 14:21
CPC Classifications
B; B26; B26B; B26B19/00; B26B19/14

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 301 words
A ROTARY BLADE RAZOR COMPRISING, A HOUSING, A ROTARY SPINDLE JOURNALED IN SAID HOUSING, A DISK BLADE HAVING A SHARPENED PERIPHERAL SLICING EDGE MOUNTED COAXIALLY ON THE SPINDLE FOR ROTATION THEREWITH, A SLEEVE MOUNTED COAXIALLY OF THE BLADE ON THE SUPPORT, A PLURALITY OF ENDWISE EXTENDING TEETH ON THE SLEEVE, THE END SURFACES OF THE TEETH DEFINING A COMMON SURFACE CORRESPONDING TO THE AXIALLY INWARD SURFACE OF THE PERIPHERAL PORTION OF THE BLADE AND EXTENDING RADIALLY TO ITS SLICING EDGE, EACH OF THE TEETH BEING INCLINED AT AN ACUTE ANGLE TO THE RADIUS FROM THE SPINDLE AXIS THROUGH THE TOOTH IN A DIRECTION OPPOSITE TO THAT OF BLADE ROTATION TO DRAW WHISKERS ENTERING THE SPACES BETWEEN THE TEETH INTO SLICING RELATION WITH THE CUTTING EDGE OF THE BLADE, MEANS LIGHTLY BIASING THE BLADE AND SLEEVE AXIALLY TOWARD EACH OTHER TO URGE THE ENDS OF THE TEETH INTO LIGHT, FRICTIONAL, HONING ENGAGEMENT WITH THE CORRESPONDING PERIPHERAL PORTION OF THE BLADE, EACH TOOTH EXTENDING RADIALLY BEYOND THE PERIPHERY OF THE BLADE, MEANS FOR ROTATING THE SPINDLE AND THE BLADE THEREON RELATIVE TO THE TEETH, AND A SKIN ENGAGING ANNULAR MEMBER MOUNTED ON THE SUPPORT COAXIALLY OF, AND SPACED RADIALLY OUTWARDLY A SLIGHT DISTANCE FROM THE SHARPENED PERIPHERAL EDGE OF THE BLADE, SAID ANNULAR MEMBER BEING AXIALLY ADJUSTBLE TO A POSITION JUST AXIALLY INWARDLY OF THE BLADE EDGE, WHEREBY, WHEN THE RAZOR IS APPLIED TO THE FACE OF A USER WITH A PORTION OF THE AXIALLY OUTWARD FACE OF THE BLADE EXTENDING TO THE PERIPHERAL SLICING EDGE THEREOF AND THE ANNULAR SKIN ENGAGING MEMBER IN CONTACT WITH THE SKIN OF THE USER, AND IS DRAWN IN SUCH POSITION ACROSS A WHISKERED AREA OF A USER''S FACE WITH THE BLADE ROTATING, THE WHISKERS ON SUCH AREA WILL BE SEVERED BY SLICING BY THE BLADE EDGE.
Claim 2
Dependent Claim 301 words
A ROTARY BLADE RAZOR COMPRISING, A HOUSING, A ROTARY SPINDLE JOURNALED IN SAID HOUSING, A DISK BLADE HAVING A SHARPENED PERIPHERAL SLICING EDGE MOUNTED COAXIALLY ON THE SPINDLE FOR ROTATION THEREWITH, A SLEEVE MOUNTED COAXIALLY OF THE BLADE ON THE SUPPORT, A PLURALITY OF ENDWISE EXTENDING TEETH ON THE SLEEVE, THE END SURFACES OF THE TEETH DEFINING A COMMON SURFACE CORRESPONDING TO THE AXIALLY INWARD SURFACE OF THE PERIPHERAL PORTION OF THE BLADE AND EXTENDING RADIALLY TO ITS SLICING EDGE, EACH OF THE TEETH BEING INCLINED AT AN ACUTE ANGLE TO THE RADIUS FROM THE SPINDLE AXIS THROUGH THE TOOTH IN A DIRECTION OPPOSITE TO THAT OF BLADE ROTATION TO DRAW WHISKERS ENTERING THE SPACES BETWEEN THE TEETH INTO SLICING RELATION WITH THE CUTTING EDGE OF THE BLADE, MEANS LIGHTLY BIASING THE BLADE AND SLEEVE AXIALLY TOWARD EACH OTHER TO URGE THE ENDS OF THE TEETH INTO LIGHT, FRICTIONAL, HONING ENGAGEMENT WITH THE CORRESPONDING PERIPHERAL PORTION OF THE BLADE, EACH TOOTH EXTENDING RADIALLY BEYOND THE PERIPHERY OF THE BLADE, MEANS FOR ROTATING THE SPINDLE AND THE BLADE THEREON RELATIVE TO THE TEETH, AND A SKIN ENGAGING ANNULAR MEMBER MOUNTED ON THE SUPPORT COAXIALLY OF, AND SPACED RADIALLY OUTWARDLY A SLIGHT DISTANCE FROM THE SHARPENED PERIPHERAL EDGE OF THE BLADE, SAID ANNULAR MEMBER BEING AXIALLY ADJUSTBLE TO A POSITION JUST AXIALLY INWARDLY OF THE BLADE EDGE, WHEREBY, WHEN THE RAZOR IS APPLIED TO THE FACE OF A USER WITH A PORTION OF THE AXIALLY OUTWARD FACE OF THE BLADE EXTENDING TO THE PERIPHERAL SLICING EDGE THEREOF AND THE ANNULAR SKIN ENGAGING MEMBER IN CONTACT WITH THE SKIN OF THE USER, AND IS DRAWN IN SUCH POSITION ACROSS A WHISKERED AREA OF A USER''S FACE WITH THE BLADE ROTATING, THE WHISKERS ON SUCH AREA WILL BE SEVERED BY SLICING BY THE BLADE EDGE.

References Cited (Backward Citations)

DE295986C Cited
US1351507A Cited
US1416199A Cited
US2149403A Cited
US2229959A Cited
US2166025A Cited
US2166035A Cited
US2265305A Cited
US2281531A Cited
US2808645A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1968-11-29 1969-05-31 1969-11-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1972-11-29 1973-05-31 1973-11-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1976-11-29 1977-05-31 1977-11-30 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag