Dry shavers having cup-shaped cutters

Claim 1

A SHAVER COMPRISING A BODY, AN ELECTRIC DRIVE MOTOR THEREIN, A BATTERY CHAMBER IN SAID BODY FOR CONTAINING AN ELECTRICAL BATTERY TO OPERATE SAID MOTOR, A THIN-WALLED APERTURED METAL FOIL SHEAR PLATE ON SAID BODY, A ROTATABLE SPINDLE DRIVEN ABOUT ITS OWN AXIS BY THE MOTOR, SAID AXIS EXTENDING GENERALLY PERPENDICULARLY TO SAID SHEAR PLATE, A BLADE CARRIER ON SAID SPINDLE, A PLURALITY OF CUP-SHAPED BLADE ELEMENTS HAVING A WALL THICKNESS NOT SUBSTANTIALLY GREATER THAN THE THICKNESS OF SAID SHEAR PLATE, SAID BLADE ELEMENTS BEING MOUNTED AT ANGULARLY SPACED POSITIONS ON SAID CARRIER AND EACH SPACED RADIALLY FROM SAID AXIS AND HAVING AN EDGE FACE AT ONE END FACING THE SHEAR PLATE AND AN OUTER FACE MEETING SAID EDGE FACE AT AN ACUTE ANGLE TO DEFINE A CUTTING EDGE, EACH BLADE ELEMENT ALSO HAVING AN APERTURE AT THE OTHER END THEREOF, A PLURALITY OF COLLARS FORMED ON THE CARRIER AND EXTENDING TOWARDS THE SHEAR PLATE, EACH COLLAR BEING RECEIVED WITH RADIAL CLEARANCE IN ONE OF SAID APERTURES AND THE EXTENSION OF THE COLLAR FROM THE CARRIER TOWARDS THE SHEAR PLATE BEING GREATER THAN THE WALL THICKNESS OF THE BLADE ELEMENT OF THE APERTURE, WHEREBY SAID BLADE ELEMENTS ARE ABLE TO ROTATE ABOUT THEIR OWN AXES AND TO ROCK TO AT LEAST SOME EXTENT RELATIVELY