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US 4,594,778 AGranted
Shaving unit
AssigneeU.S. Philips Corporation
InventorsMarinus J. J. Dona, Adrianus J. J. Franken, Freddy Haes, Cornelis M. Reynhout
Life of this patent
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AssigneeU.S. Philips Corporation
InventorsMarinus J. J. Dona, Adrianus J. J. Franken, Freddy Haes, Cornelis M. Reynhout
Estimating the term…
A shaving unit for a dry-shaving apparatus comprises an external first cutting member with an annular wall portion formed with hair-entry apertures, and a second internal cutting member which is cooperable with the first cutting member and which comprises a ring of cutters which second cutting member can be driven relative to the first cutting member with an oscillatory rotational movement. The first and second cutting members are interconnected by at least two resilient elements, each of which extends substantially radially of the rotational axis of the second cutting member and has an end connected to the first cutting member and an end connected to the second cutting member. The elastic properties of the resilient elements are such as to permit the oscillatory rotational movement of the second cutting member, but the resilient elements are rigid in directions extending substantially parallel to and radially of the rotational axis of the second cutting member.
A shaving unit for a dry-shaving apparatus, the shaving unit comprising an external first cutting member having an annular wall portion with hair-entry apertures, and an internal second cutting member which is cooperable with the first cutting member and which comprises a ring of cutters, which second cutting member can be driven relative to the first cutting member so as to perform an oscillatory rotational movement, characterized in that the first and second cutting members are interconnected by at least two resilient elements, each of which has an end connected to the first cutting member and an end connected to the second cutting member and which are so arranged that their elastic properties will permit the oscillatory rotational movement of the second cutting member, but which are rigid in directions extending substantially parallel to and radially of the rotational axis of the second cutting member.
Dependencies are inferred from the claim text.