GB2448699A

GB2448699A - Shaver for long and short hairs

Info

Publication number: GB2448699A
Application number: GB0707850A
Authority: GB
Inventors: Li Jun Dan
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-24
Filing date: 2007-04-24
Publication date: 2008-10-29
Also published as: GB0707850D0

Abstract

The shaver includes a cutter 3 having a foil type cutting head 9 with a plurality of apertures formed therein for receiving hairs and a rotary cutter 11. The rotary cutter 11 includes parts for cutting short 15 and long 17) for hairs. These parts 15, 17 have different cutting planes. The shaver also includes a pump 26 for producing negative pressure (vacuum) which sucks long hairs through the cutter head 9 and moves trimmed material away from the rotary cutter.

Description

Shaver device This invention relates to a shaver device for trimming

human or animal hair.

A problem with existing shavers is that the main cutting mechanism is not able to cut both long and short hairs. A shaver is principally designed to cut short stubbly hair. The cutting mechanism relies on the rigidity of the short hairs to protrude through slots or perforations in a cutter head or foil, which are then trimmed by one or more blades located below. Longer hairs are more wispy and are prone to curling and therefore they tend to sit on top of the cutter head / foil and are not exposed to the cutting blade(s). To address this problem it is known for shavers to include a separate cutting device for trimming long hair. Typically the second cutting device comprises exposed reciprocating shears that are intend for trimming beards.

They are most useful when there is a substantial amount of long hair to be cut and are less useful when there are only a few long hairs to be cut, particularly when the long hairs are adjacent short stubbly hair. For such hairs, it may be necessamy to remove them by some other means, for example a razor or tweezers. Neither of these approaches is satisfactory since two operations are required to cut both long and short hairs.

The material removed when shaving is collected in the vicinity of the cutting mechanism. If not cleaned regularly, the trimmed material may clog the cutting mechanism leading to degradation of the cutting performance and possibly to skin infections. Therefore it is necessaiy to clean such devices on a regular basis.

Most commercially available shavers have a detachable cutter head that can be removed after shaving to enable the user to access the cutting mechanism to remove the trimmed material.

It is known in the art to clean the cutting mechanism with a brush and/or a cleaning solvent.

This is can be very messy and time consuming. Some shavers can be cleaned by holding the cutting part of the shaver under a stream of water, however this requires parts made from materials that do not rust, which increases cost. It is also known to provide base units with a vibratory mechanism that shakes the shaver when it is re-charging thereby dislodging material collected by the shaver. However, the base unit adds substantial cost to the shaver.

Accordingly the current invention seeks to mitigate at least one of the afore-mentioned problems or at least to provide an alternative arrangement to known devices.

According to one aspect of the invention there is provided a shaver device including a cutting mechanism having a cutter head with a plurality of apertures formed therein for receiving hairs s and a rotary cutter device for trimming the hair, wherein the rotary cutter device includes a first part for cutting short hairs and a second part for cutting long hairs, the first and second parts having different cutting planes, and means for generating a negative pressure for sucking long hairs through the cutter head and for moving trimmed material away from the rotary cutter device.

Thus the means for generating a negative pressure for sucking long hairs through the cutter head is an integral part of the rotary cutter device. This arrangement is particularly advantageous since it ensures that the negative pressure system is very close to the cutter head and accordingly effectively sucks long hairs into the cutting path of the rotary cutter. It also has the advantage that the flow of air sucked through the cutter head carries material trimmed by the rotary cutter away from the cutting mechanism, for example to a cutting chamber extraction or exit port, thus ensuring that rotary cutter stays clean.

Advantageously the means for generating a negative pressure for sucking long hairs through the cutter head may include at least one rotary element that is profiled so as to generate the negative pressure when rotated. Advantageously the or each rotary element is mounted on or formed integrally with the rotary cutter. This provides a compact and light weight arrangement that is located close to the cutter head and hence close to the long hairs. Preferably the or each rotary element comprises at least one of a fan blade, rotor blade, propeller blade, impellor blade or similar.

Advantageously the cutter head can include a first part for receiving short hairs and a second part for receiving long hairs. This provides a profiled cutter head that has first and second parts that are adapted for receiving particular types of hair. Preferably the second part of the cutter head is recessed from the first part. This provides a space between the skin and the cutter head to allow longer hairs to unfurl and penetrate the cutter head under the action of the negative pressure creating means. Alternatively, the second part may comprise a large aperture in the cutter head. Advantageously the plurality of apertures comprise a plurality of perforations or slots that allow hairs to penetrate there through into the cutting planes of the cutters. Preferably the apertures of the second part of the cutter head are slightly larger than those of the first part to enable the longer hairs to penetrate the cutter head more easily. In this case, the recessed s second part also prevents skin protruding through the larger apertures when the shaver is pressed against the user's body, which might otherwise be nipped by the rotary cutter.

Advantageously the first part of the cutter head may include a substantially annular part and the second part of the cutter head is surrounded by the annular part. The second part of the cutter head is located in a central part of the cutter head since this provides an efficient cutting arrangement for both long and short hairs and allows multi-directional shaving. Thus the second part of the cutter head is preferably centrally located. In many conventional rotary cutter shavers the central part of the cutter head is not used for shaving at all thus the current invention provides a more efficient arrangement.

Preferably the fist part of the cutter head has an outer surface that is substantially convex. The fIrst and second parts of the rotary cutter and the underside of the cutter head are profiled complimentary to one another.

Preferably the first part of the rotary cutter device includes a first set of blades comprising from one to eight blades, preferably two to four blades and more preferably still three blades.

Advantageously the or each blade in the first set of blades includes a side cutting edge. This enables hairs protruding through the side wall of the recessed part to be trimmed.

Preferably the second part of the rotary cutter device includes a second set of blades comprising from one to eight blades, and preferably one to three blades.

Advantageously the rotary cutter includes a blade holder having a first part for supporting the first set of blades and a second part for supporting the second set of blades. The first and second sets of blades are driven in the same direction by the sante drive source.

Advantageously the blade holder includes at least one radially extending arm for supporting the first set of blades. Advantageously the blade holder includes the same number of arms as there are blades in the first set of blades, and a single blade is mounted on each of the arms.

Advantageously, the arms are evenly distributed for good rotational balance. Preferably the blade holder and blades are arranged such that all of the blades in the first blade set operate in substantially the same cutting plane and all the blades of the second blade set operate in substantially the same cutting plane.

Advantageously the means for generating a negative pressure for sucking long hairs through the cutter head is mounted on or formed integrally with the blade holder. Preferably, the rotary cutter includes the same number of rotary elements as the blade holder has arms. For example, each rotary element for generating a negative pressure can be attached to an arm and/or can be located between pairs of arms. Alternatively the blade holder may comprise a substantially cylindrical body with slots formed therein for receiving the blades and including at least one profiled surface acting as a fan or rotor for generating the negative pressure when rotated for sucking long hairs through the cutter head. Preferably the or each rotary element is arranged to suck air through the cutter head and then drive it substantially axially to an exhaust duct located axially downstream. Alternatively, each rotary element can be arranged to drive air substantially radially to an exhaust duct located in a radially outward position from the rotary elements.

Advantageously the blade holder includes a central part for supporting the second set of blades.

Advantageously at least one of the blades is resiliently mounted. Preferably the or each blade is mounted on a spring element. Preferably the or each spring element includes a resilient tongue and the blade is mounted thereon.

Advantageously the shaver device may include a vacuum extractor system for transferring material removed by the cutting mechanism to a collection chamber. The vacuum extractor system may include at least one air duct for transferring the airstream between a cutting chamber and the collection chamber. Preferably the duct includes an ingress, which is typically the extraction or exit point of the cutting chamber, a main body portion and an outlet. Thus the means for generating a negative pressure for sucking hairs through the cutter head moves the trimmed material from the rotary cutter to the vacuum extractor system. Preferably the main body portion has a smaller cross-sectional area than the ingress. For example, the main body portion typically has a cross-sectional area in the range 2 to 4 mm. This helps to ensure that the airstream moves quickly through the shaver.

Advantageously the vacuum extractor system includes a rotary suction device for creating the vacuum to suck air from the vicinity of the rotary cutting mechanism through the collection chamber. For example, the rotary suction device can be a fan that is arranged to suck air through the shaver body. Advantageously the rotary cutting mechanism, and hence the means for generating a negative pressure for sucking tong hairs through the cutter head and for transferring material trimmed by the rotary cutter device to an extraction port, and the vacuum extractor system are driven by the same drive source, which is preferably an electric motor powered by a cell, a rechargeable cell, or mains supply.

Advantageously the vacuum extractor system is arranged to generate a cyclone in order to separate the trimmed material from an airstream. The cyclone is generated in the collection chamber by the arrangement of the duct carrying air from the rotary cutting mechanism to the collection chamber and the shape of the coliection chamber, which is substantially conical, substantially domed or substantially parabolic in cross-section. The duct is arranged to direct air entering the collection chamber onto the inner face of the side wall of the collection chamber such that it imparts spin and turbulence. For example, the duct can be arranged to direct the airstream substantially downwards onto the side wall. A cyclonic separator device imparts further spin on the airstream as it exits the collection chamber to further separate dust from the airstream.

Advantageously the vacuum extractor system is arranged to carry the airstreain along a tortuous path that includes a substantially U-shaped bend. This extends the length of the path for the airstream without extending the length of the shaver, which helps to increase the separation of dust from the airstream due to the extended path and the abrupt change in direction.

Advantageously the collection chamber includes means for trapping trimmed material. For example, the means for trapping trimmed material can include flaps for trapping trimmed material in a lower part of the collection chamber.

According to another aspect of the present invention there is provided a shaver device for trimming hair including a rotary cutting mechanism having a cutter head including a first part for receiving short hairs and a second part for receiving long hairs.

Advantageously the cutter head may comprise any of the features and / or arrangements described above.

An embodiment of the present invention will now be described, by way of example only, with reference to the accompanying drawings in which like references indicate equivalent features, wherein: Figure 1 is a sectional view of an electric shaver in accordance with the present invention; Figure 2 is a perspective view of part of a cutting mechanism for the shaver of Figure 1; Figure 3 is a side view of the part of the cutting mechanism of Figure 2; Figure 4 is a plan view from below of the part of the cutting mechanism of Figure 2; Figure 5 is a plan view from above of the part of the cutting mechanism of Figure 2; Figure 6 is a perspective view of a cutter head; and Figure 7 is a cross-section of the cutter head of Figure 6 with the cutting mechanism in-situ; Figure 1 shows a schematic view of a first electric shaver I in accordance with the present invention. The electric shaver I includes a cutting mechanism 3, a vacuum cleaning system and a power source 7. The power source 7 may be any conventional type such as a battery, rechargeable battery or mains supply. The cutting mechanism 3 is arranged to shave or trim hair. The cutting mechanism 3 comprises a cutter head 9 and a rotary cutting device II driven by a motor 13, said rotary cutting device 11 comprising a first set of blades 15 arranged for cutting short hairs, a second set of blades 17 for cutting longer hairs and a blade holder 19 for supporting the first and second sets of blades 15,17.

The blade holder 19 includes a central portion 21 and three arms 23 extending radially outwards from the central portion 21. Each arm 23 includes a slot in its upper surface that is arranged to receive a blade from the first set of blades 15 such that each blade is upstanding from its arm 23. Each blade 15 is mounted on its arm 23 via a substantially L-shaped spring s element 24. Each spring element comprises a planar section 24a and a resilient tongue 24b.

The spring element allows the blade 15 to move perpendicularly (vertically) relative to the arm 23 in a limited fashion, for example to accommodate vertical movement of the cutter head 9.

The aims 23 are evenly distributed about the central portion 21, with the angle being approximately 1200 between each arm 23. This provides a well balanced arrangement for rotary movement. The second set of blades 17 comprises a single split blade, which is mounted on the central portion 21 such that the blade is upstanding from the central portion 21. The upper surface of the blade is substantially complementary to the under side of the cutter head 9.

The blades 15,17 are driven by the motor 13 via a drive shaft 25. The blade holder 19 is mounted on the shaft 25 such that the arms 23 extend radially outwards therefrom. The motor 13 is located below the blade holder 19.

The rotary cutting device 11 is located in a cutting chamber 27 defined by a peripheral wall 29 and the cutter head 9. The cutter head 9 is non-rotating, is circular in plan view and comprises a slotted head made from aluminium or titanium or some other suitable material.

The slots allow hairs to protrude through the cutter head 9 into the cutting chamber 27 to be trimmed by the rotary motion of the blades 15,17 against the cutter head 9. The cutter head 9 has an outer annular part 31 arranged to receive short hairs. The annular part 31 preferably has a convex upper surface (see Figure 7). The cutter head 9 includes a central part 33 that is recessed from the annular part 31 and is arranged to receive longer hairs. The longer hairs protrude through the slots formed in the recessed part 33 of the cutter head into the cutting chamber 27. Typically, the slots formed in the central part 33 are larger than the slots formed in the annular part3l to enable long hairs to more easily penetrate the cutter head 9. The slots can be replaced by perforations. The cutter head 9 can be arranged to move vertically a limited amount.

The first set of blades 15 is arranged to trim short hairs that protrude through the slots in the annular part 31 of the cutter head. The second set of blades 17 is arranged to trim longer hairs that protrude through the slots formed in the central part 33 of the cutter head. Thus both sets of blades 15,17 are arranged in close proximity to the cutter head 9.

Optionally, the blades in the first set of blades may include a side cutting edge to cut hairs protruding through the side wall of the recessed part 33. This has the advantage of providing an efficient arrangement for cutting hairs along substantially the full cutter head 9 profile. Thus the cutting mechanism can include blades that cut in three cutting planes.

The arms 23 are shaped to include fan blade portions 26 (see Figures 2 to 5). The fan blades 23 can be formed integrally with arms 23 or can be mounted thereon. When the rotary cutter 3 is energised the fan blade portions 26 suck air into the cutting chamber 27 through the cutting head 9 thereby pulling longer hairs into the cutting chamber and into the cutting plane of at least one of the sets of blades 15,17, and typically the second set of blades 17. The fan blades 26 are arranged such that they pull/push air in the same direction as the vacuum is cleaning systemS. Accordingly, the air is pulled into the cutting chamber 27 and as it passes the fan blades 26 is pushed axially, at least partially towards the first duct 43. This, together with the recessed central part 31, addresses the problem of longer hairs curling and being less rigid than shorter hairs which normally prevents them from being cut. Also, it is thought that using a fan in the cutting chamber may save the system energy. As an alternative arrangement, the first duct 43 can have its ingress 43a located in a side wall 29 and the fan blades 26 can be shaped to direct the air sucked into the cutting chamber 27 radially towards the side wall 29.

Because the fan blades 26 are adjacent the cutter head 9 they are able to provide the required amount of negative pressure to suck longer hairs into the cutting chamber 27 without the need for a significantly larger power source and motor. Thus the current invention provides a compact design.

The effectiveness of the fan blades 26 at pulling hairs into the cutting chamber through the cutter head 9 depends, in part, on the shape of the blades and the speed of rotation of the drive shaft 25, which are selected accordingly.

The vacuum cleaning system 5 includes a collection chamber 35, an exhaust chamber 37, an exhaust fan 39 mounted on a shaft 41 that is driven by the motor 13, a first duct 43 connecting the cutting chamber 27 to the collection chamber 35, a second duct 45 connecting the collection chamber 3510 the exhaust chamber 37 and a cyclonic separator device 47. The fan 39 is located below the motor 13 and is preferably arranged to rotate in the same direction as the blade holder 19 since this provides a simple and light arrangement.

The chambers are substantially sealed with respect to one another by seal members 48 to ensure that air is not drawn into the shaver by the vacuum cleaning system 5 from regions other than the cutting chamber 27. The vacuum cleaning system 5 is arranged to create a vacuum to suck material trimmed by the cutting mechanism 3 from the cutting chamber 27 in order to keep the cutting chamber 27 and the blades 15,17 relatively free from dust, hair and skin deposits. This prevents degradation of the performance of the cutting device 3, reduces the possibility of obtaining skin infections and obviates the need to dismantle the shaving device I to clean the blades manually or to purchase a vibratory base that cleans the shaver automatically. Preferably the collection chamber 35 is sufficiently large that many shaving operations can be performed before it is necessary to open it and dispose of trimmed material, for example between twenty and thirty shaving operations.

The first duct 43 has an ingress 43a located in the cutting chamber 27. The ingress 43a has a relatively large opening for receiving dust and debris from the cutting chamber 27. The ingress 43a tapers to a narrower ducting portion 43b that carries the dirt laden airstream to the collection chamber 35 along a path that is substantially parallel to the longitudinal axis of the shaver. The ducting portion 43b is narrow so that the airstream will travel quickly along the duct. Typically the diameter of the ducting portion is in the range 3 to 5mm. At the lower end of the ducting portion 43b there is a tapered exit portion 43c that is arranged to direct the airstream onto the chamber side wall.

The collection chamber 35 is substantially conical in shape or has a substantially parabolic cross-section, and is located at the lower end of the shaver. It houses the cyclonic separator device 47 (see Figures 7, 10 and 11). The dirt laden airstream is cleaned in the collection chamber 35 by cyclonic action and the separated dirt collects towards the base of the chamber.

The collection chamber 35 is detachable from the main body of the shaver so that after a shaving operation has been completed the dirt can be emptied from the collection chamber 35.

This saves having to perform a manual cleaning operation on the cutting blades.

The chamber 35 includes flaps 36 towards its base that are arranged to trap dirt in the lower part of the chamber 35. The flaps 36 may include crenellated edges 38 to enable dirt to fall below the level of the flaps 36 (see Figure ii).

The cyclone is generated in the collection chamber 35 by the arrangement of the first duct 43, the cyclonic separator device 47 and the shape of the collection chamber 35. The first duct 43 is arranged to direct air entering the collection chamber 35 substantially downwards onto the to inner face of the concave collection chamber, which imparts spin and turbulence, and the cyclonic separator 47 imparts further spin on the air as it exits the collection chamber 35. A substantial portion of the dust and debris contained in the airstream is separated from it via centrifugal action, which will tend to force the dust and debris to the sides of the collection chamber 35, which then falls towards the base where it settles below the flaps 36. The cleaned air passes upwards through the second duct 45 to the exhaust chamber 37. The exhaust fan 39 pushes the air to the side walls of the exhaust chamber 37 where it is vented to atmosphere via a vent 50. Thus the air path follows a tortuous path through the shaver, which includes a U-shaped turn when flowing from the first duct 43 to the second duct 45 via the collection chamber 35 and cyclonic separator 47. This has the advantage of extending the path along which the airstream travels within the shaver without having to increase the length of the body.

This provides additional time for dust and debris to be separated from the airstream. Also, the exhaust chamber 37is arranged substantially perpendicular to the first and second ducts 43,45 requiring the airstream to turn through approximately 90 degrees in order to exit the chamber via the vent 50. Changing the direction of the airstream also assists separation of dust and debris.

In use, when the user switches the electric shaver on, the motor 13 drives the cutting mechanism 3 and the fan 39 in the same direction. The fan blades 26 suck air into the cutting chamber 27 through the cutting head and drive it, at least in part, towards the ingress of the first duct 43a. The fan 39 sucks air from the cutting chamber 27 via the first duct 43 into the collection chamber 35. The airstream then moves through the cyclonic separator 47 into the second duct 45 and then into the exhaust chamber 37 where it is pushed radially outwards to the sides of the chamber and then to atmosphere via the vent 50.

Because the chambers and ducts are sealed, appreciably no other air enters the negative pressure system 5.

As the user holds the shaver to his face, short stubbly hairs protrude through the slots or perforations formed in the annular portion 31 of the cutting head 9 and are trimmed by the first set of blades 15. Longer hairs are sucked through the slots or perforations formed in the central portion 33 of the cutting head by the sucking action of the fan blades 26so that they protrude into the path of the second set of blades 17. The rotary action of the second set of blades 17 trims the longer hairs.

The dust and debris caused by the cutting operation is sucked away from the cutting mechanism 3 into the first duct 43 thereby leaving the rotary cutter device 11 and the cutting chamber 27 relatively clean.

The dirt-laden airstream is drawn into the collection chamber 35 and due to the arrangement a cyclone is generated and dirt is separated from the airstream. The dirt falls to the base of the collection chamber 35 via the crenellated edges of the flaps 38 and is held in place by the flaps 36. The cleaned air exits the collection chamber 35 through the second duct 45. The airstream travels quickly along the second duct 45 and exits the shaver via the vent 50.

If the user wants to dispose of the trimmed materials, the collection chamber 35is detached from the main body of the shaver and the contents are poured away. Since the collection chamber is located away from the cutting mechanism 3 the cut material may remain in the collection chamber for a long period without affecting the cutting performance or risking skin afflictions. Thus the cutting chamber 27 and cutting mechanism 3 remain substantially clean without the need of brushing, running the shaver under a stream of water or using a vibratory base.

it will be appreciated by a man skilled in the art that modifications to the embodiments described herein can be made but are still within the scope of the present invention. For example, it is not strictly necessary for both the fan and the cutting mechanism to be driven by the same motor.

A filter, such as a thin layer of fabric, can be applied to the conduits for removing particles from the airstream.

Claims

Claims I. A shaver device including a cutting mechanism having a cutter

head with a plurality of apertures formed therein for receiving hairs and a rotary cutter device for trimming the hair, wherein the rotary cutter device includes a first part for cutting short hairs and a second part for cutting long hairs, the first and second parts having different cutting planes, and means for generating a negative pressure for sucking long hairs through the cutter head and for moving trimmed material away from the rotary cutter device.
2. An shaver according to claim!, wherein the means for generating a negative pressure for sucking long hairs through the cutter head includes at least one rotary element that is profiled to generate the negative pressure when rotated.
3. An shaver according to claim 2, wherein the or each rotary element comprises at least one of a fan blade, rotor blade, propeller blade, impellor blade or similar.
4. An shaver according to any one of the preceding claims, wherein the rotary cutter device is located in a cutting chamber and the means for creating negative pressure is arranged to push material trimmed by the rotary cutter to an exhaust port in the cutting chamber.
5. An shaver according to any one of the preceding claims, wherein the cutter head includes a first part for receiving short hairs and a second part for receiving long hairs.
6. An shaver according to claim 5, wherein the second part of the cutter head is recessed from the first part or comprises an aperture in the cutter head.
7. An shaver according to claim 5 or 6, wherein the first part of the cutter head includes a substantially annular part and the second part of the cutter head is surrounded by the annular part.
8. An shaver according to any one of the preceding claims, wherein the fist part of the cutter head has an outer surface that is substantially convex.
9. An shaver according to any one of the preceding claims, wherein the first part of the rotary cutter includes a first set of blades comprising from one to eight blades, preferably two to four blades and more preferably still three blades.
10. An shaver according to claim 9, wherein the or each blade in the first set of blades includes a side cutting edge.
11. An shaver according to any one of the preceding claims, wherein the second part of the rotary cutter includes a second set of blades comprising from one to eight blades, and preferably one to three blades.
12. An shaver according to claim 11, wherein the rotary cutter includes a blade holder having a first part for supporting the first set of blades and a second part for supporting the second set of blades.
13. An shaver according to claim 12, wherein the blade holder includes at least one radially extending arm for supporting the first set of blades.
14. An shaver according to claim 12 or 13, wherein the blade holder includes a central part for supporting the second set of blades.
15. An shaver according to any one of claims 12 to 14, wherein the means for generating a negative pressure for sucking long hairs through the cutter head is mounted on or formed integrally with the blade holder.
16. An shaver according to any one of claims 9 to 15, wherein at least one of the blades is resiliently mounted.
17. An shaver according to any one the preceding claims, including a vacuum extractor system for transferring material removed by the cutting mechanism to a collection chamber.
18. An shaver according to claim 17, wherein the vacuum extractor system includes a second rotary device for creating the vacuum to suck air from the vicinity of the rotary cutting mechanism.
19. An shaver according to claim 17 or 18, wherein the vacuum extractor system is arranged to generate a cyclone in order to separate the trimmed material from an airstream.
20. An shaver according to any one of claims 17 to 19, wherein the vacuum extractor system is arranged to carry the airsiream along a tortuous path that includes a substantially U-shaped bend.
21. An shaver according to any one of claims 17 to 20, wherein the collection chamber includes means for trapping trimmed material.
22. An shaver according to any one of claims 17 to 21, wherein the internal wall(s) of the collection chamber define a substantially conical or domed chamber, or the chamber has a substantially parabolic cross-section.
23. An shaver according to any one of claims 17 to 22, wherein the pathway along which dirty air travels from the rotaiy cutter to the collection chamber is arranged such that air entering the collection chamber is directed onto the internal wall of the chamber in a manner that causes it to circulate around the chamber.
24. An shaver according to any one of the claims 17 to 23, wherein the vacuum extractor system and the means for generating a negative pressure for sucking long hairs through the cutter head are driven by a single motor.
25. A shaver device for trimming hair including a rotary cutting mechanism having a cutter head including a first part for receiving short hairs and a second part for receiving long hairs.
26. An shaver substantially as described herein with reference to and as illustrated by the accompanying drawings.