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US 5,685,077 AGranted
Electric shaver
AssigneeSanyo Electric Co., Ltd.
InventorsKiyotaka Mukai, Takao Nobuhisa
Life of this patent
Estimating the term…
Abstract
An electric shaver comprises a pivoting swing end, and an oscillator which is coupled to the swing end through a transmission. The transmission transmits a pivotal movement of the swing end to a horizontally reciprocating movement of the oscillator. An inner blade member coupled to the oscillator slidingly engages an outer blade member. Such a structure enables the inner blade member to move smoothly, because the inner blade member slides only horizontally.
Claims16
An electric shaver driven by a power source, said electric shaver comprising:
- a swing portion for swinging, actuated by the power source;
- transmission means for transmitting a movement of the swing portion to a horizontally reciprocating movement;
- an oscillator driven by the horizontally reciprocating movement;
- an inner blade member coupled to the oscillator, the inner blade member including a plurality of inner blades, each inner blade having an outer edge;
- an outer blade member positioned so that the outer edges of the inner blades slidingly engage the outer blade member;
- and
- a pivotally disposed swing bar, wherein said power source includes an electromagnet for driving the swing bar, the swing bar being coupled to the swing portion to swing the swing portion, wherein the electromagnet includes a U-shaped core and spaced coils wound around each end of the U-shaped core, and the electric shaver includes:
- a switching structure including:
- a finger manipulable knob portion;
- a switch;
- and
- a rod portion for connecting the knob portion to the switch, the rod portion being located in a space between the coils.
9 more elements
An electric shaver driven by a power source, said electric shaver comprising:
- a moving portion for reciprocal motion in at least two dimensions, and actuated by the power source;
- transmission means for transmitting a movement of the moving portion to one dimension of reciprocating movement;
- an oscillator driven by the one dimensional reciprocating movement;
- an inner blade member coupled to the oscillator, the inner blade member including a plurality of inner blades, each inner blade having an outer edge;
- an outer blade member positioned so that the outer edges of the inner blades slidingly engage the outer blade member;
- and
- a swing bar being swingably disposed, wherein said power source includes an electromagnet for driving said swing bar, the swing bar being coupled to the moving portion so that the moving portion swings, wherein the electromagnet includes a U-shaped core and coils wound around each end of the U-shaped core, the electric shaver including:
- a switching structure including:
- a knob portion for being moved by a finger;
- an electric operation portion for electric operation, cooperating with an electric circuit, and the knob portion;
- and
- a rod portion for connecting the knob portion to the electric operation portion, the rod portion being located in a space between the coils.
9 more elements
An electric shaver, comprising:
- a support member;
- a pivot member coupled pivotally around a post to the support member;
- an actuating bar, a first end of the actuating bar being coupled to the pivot member, a second end of the actuating bar having a swing portion and being pivotally coupled to the support member by a pin at a middle portion of the support member;
- transmission means for transmitting a movement of the actuating bar to a horizontally reciprocating movement;
- an oscillator driven by the horizontally reciprocating movement;
- an inner blade member coupled to the oscillator, the inner blade member including a plurality of inner blades, each inner blade having an outer edge;
- an outer blade member positioned so that the outer edges of the inner blades slidingly engage the outer blade member;
- and
- a spring pressing the outer edges of the inner blades to the outer blade member, wherein the transmission means includes a vertical slit in the oscillator, the actuating bar having a projection inserted in the vertical slit and loosely coupled to the vertical slit.
6 more elements
An electric shaver, comprising:
- a support member;
- a pivot member coupled pivotally around a post to the support member;
- an actuating bar, a first end of the actuating bar being coupled to the pivot member, a second end of the actuating bar having a swing portion and being pivotally coupled to the support member by a pin at a middle portion of the support member;
- transmission means for transmitting a movement of the actuating bar to a horizontally reciprocating movement;
- an oscillator driven by the horizontally reciprocating movement;
- an inner blade member coupled to the oscillator, the inner blade member including a plurality of inner blades, each inner blade having an outer edge;
- an outer blade member positioned so that the outer edges of the inner blades slidingly engage the outer blade member;
- and
- a spring pressing the outer edges of the inner blades to the outer blade member, wherein the transmission means includes a vertical slit in the oscillator, the actuating bar having a projection inserted in the vertical slit and loosely coupled to the vertical slit, and a first distance from said pin to said projection is greater than a second distance from said post to said projection.
6 more elements
Dependencies are inferred from the claim text.