Electric shaver
AssigneeBraun GmbH
InventorsJoachim Krauss, Uwe Fischer, Roman Roeder, Andreas Erndt, Detlef Gleich, Uwe Ludaescher
Life of this patent
Estimating the term…
Abstract
Electric shaver provided with a handle and a shaver head including at least one drivable cutter element, wherein said shaver head is connected to said handle by means of a support structure providing for a swivel and/or tilting axis about which said shaver head may swivel or tilt relative to said handle, wherein said support structure includes a pair of link arms forming a four-joint linkage with each link arm having a head joint connected to a shaver head part and a handle joint connected to the handle or a base part connected thereto.
Claims18
An electric shaver comprising:
- a. a handle,
- b. a shaver head including at least one cutter unit which includes a drivable cutter element and a shear foil,
- c. and a motor connected to said cutter element via a drive transmitter,
- d. wherein said shaver head is connected to said handle by a support structure providing for a swivel and a tilting axis about which said shaver head may swivel or tilt relative to said handle,
- e. wherein said support structure includes a pair of link arms forming a four joint linkage with each link arm having a head joint connected to a shaver head part and a handle joint connected to the handle or a base part, an instantaneous center of rotation corresponding to the tilting axis is defined by the intersection of a straight line extending through the head and handle joints of one link arm with a straight line extending through the head and handle joints of another link arm,
- f. wherein said link arms are mounted in a standing configuration with the head joints of the link arms further away from the handle than the handle joints of the link arms, characterized in that said motor is received in said handle on a side of the handle joints opposite to the shaver head,
- g. wherein said drive transmitter includes a drive shaft extending from said handle into said shaver head and passing said link arms, said drive shaft comprising a longitudinal axis, is rotatable in an oscillating manner by said motor and is rotatable about the longitudinal axis, but otherwise fixedly supported by said handle, and
- h. wherein pivot axes of the link arms are defined by the handle joints and the head joints and extend transverse to said drive shaft on opposite sides thereof.
An electric shaver comprising:
- a. a handle,
- b. a shaver head including at least one cutter unit which includes a drivable cutter element and a shear foil,
- c. and a motor connected to said cutter element via a drive transmitter,
- d. wherein said shaver head is connected to said handle by a support structure providing for a swivel and a tilting axis about which said shaver head may swivel and tilt relative to said handle,
- e. wherein said support structure includes a pair of link arms forming a four-joint linkage with each link arm having a head joint connected to a shaver head part and a handle joint connected to the handle or a base part, an instantaneous center of rotation corresponding to the tilting axis is defined by the intersection of a straight line extending through the head and handle joints of one link arm with a straight line extending through the head and handle joints of another link arm,
- f. wherein said link arms are mounted in a standing configuration with the head joints of the link arms further away from the handle than the handle joints of the link arms, characterized in that said motor is received in said handle on a side of the handle joints opposite to the shaver head,
- g. wherein said drive transmitter includes a drive shaft extending from said handle into said shaver head and passing said link arms, said drive shaft being rotatable in an oscillating manner, but otherwise fixedly supported by said handle, and
- h. wherein pivot axes of the link arms are defined by the handle joints and the head joints and extend transverse to said drive shaft on opposite sides thereof.
Dependencies are inferred from the claim text.