1. An electric toothbrush, comprising:
a neck extending in a longitudinal direction of the toothbrush,
a head at a remote end of the neck,
a handle at a proximal end of the neck,
an electric motor located within the handle,
a tuft block mounted to the head in a manner allowing pivotal oscillation thereof about a tuft block axis substantially normal to the longitudinal direction of the neck,
a primary rocker arm extending longitudinally within the handle andor neck and pivoting about a primary rocker arm axis substantially parallel to the tuft block axis, a proximal end of the primary rocker arm being driven by the electric motor, and
a secondary rocker arm extending longitudinally within the neck and pivoting about a secondary rocker arm axis substantially parallel to the tuft block axis, a distal end of the secondary rocker arm driving the tuft block and a proximal end of the secondary rocker arm being driven by the primary rocker arm.
2. The electric toothbrush of claim 1 wherein the tuft block comprises a recess socket and the secondary rocker arm has at its distal end a ball received within the recess socket.
3. Electric toothbrush of claim 2 wherein the recess socket is a slot extending in a direction substantially parallel to the pivot axis of the top block.
4. The electric toothbrush of claim 1 further comprising a coupling between the motor and the primary rocker arm, the coupling having an eccentric boss received within a slot at the proximal end of the primary rocker arm.
5. The electric toothbrush of claim 1 further comprising a flexible seal surrounding the primary rocker arm.
6. The electric toothbrush of claim 1 wherein the primary and secondary rocker arms are interconnected by a pivot pin.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A method of controlling access to elements within a bus system or network, comprising the following steps:
an external device (100), which wishes to establish a communication link with the bus system or network, is identified by a device-specific identifier to a bus manager or network manager (300), and the device-specific identifier itself or a data record allocated to it contains information regarding the membership of the device in a certain class;
authentication of the external device (100) is performed on the basis of a digital key;
after authentication, the external device (100) is granted access to elements of the bus system or network in accordance with its class membership.
2. The method as recited in claim 1,
wherein for the access, the external device (100) logs in at a gateway (200) using a log-in message which is transmitted, particularly together with the device identifier, to the bus manager or network manager (300).
3. The method as recited in claim 2,
wherein a device class identifier is also transmitted in addition to the device-specific identifier.
4. The method as recited in one of claims 1 through 3,
wherein a joint key agreement is reached between the external device (100) and the bus manager or network manager (300), in particular through the exchange of parameters such as primary numbers, random numbers and the operations performed on them.
5. The method as recited in claim 4,
wherein the Diffie-Hellmann method is used for the joint key agreement.
6. The method as recited in one of claims 1 through 5,
wherein after the joint key agreement between the external device (100) and the bus manager or network manager (300), authentication is performed according to the challenge-response procedure.
7. The method as recited in one of claims 2 through 6,
wherein the gateway (100) is set up to perform signal conversions according to the ISOOSI layer model at least in the physical layer andor higher layers.
8. The method as recited in one of claims 2 through 7,
wherein the gateway (200) is set up to have a firewall functionality (201).
9. The method as recited in claim 8,
wherein the authentication is used to ascertain which resources of the bus system or network may be used andor controlled by the external device (100) and in what manner this may be done.
10. The method as recited in one of claims 8 or 9,
wherein the bus manager or network manager (300) configures the firewall functionality (201) on the basis of the access authorization determined by it, so that the firewall functionality enables or blocks resources of the bus system or the network according to the access authorization thus determined.
11. The method as recited in claim 10,
wherein the enabling or blocking is performed on the basis of the source address or the destination address of a data packet.
12. The method as recited in claim 10,
wherein the firewall functionality (201) filters certain commands of the external device (100) according to the access authorization determined.
13. The method as recited in one of claims 1 through 12,
wherein the access authorization is negotiated between the external device (100) and the bus manager or network manager (300).
14. The method as recited in one of claims 1 through 13,
wherein instead of or in addition to an external device (100), an external bus system or network establishes a communication link with the bus system or network to gain access to elements of the bus system or network.