Device for transmitting electric energy to computers and data nets

Claim 1

A device for transmitting electric energy to el­ectric equipment, primarily computers and data nets, which device is intended to be connected between a volt­age source and the electric equipment, comprising a generator, which is intended to be connected to said voltage source and capable to generate a high-frequency mechanical wave motion and comprising a transmission member capable to transmit said motion to a receiver, which transmission member comprises a non-magnetic and electrically insulating material, in which the mechanic­al wave motion can be conducted, and said receiver, which is intended to be connected to the electric equip­ment, is capable to convert said mechanical wave motion into an electrically varying voltage, and said generator and said receiver each comprise a piezo-electric elem­ent, which are in mechanical connection with said trans­mission member, characterized in that said transmission member (12;32;72;110,111) has the shape of a bar or corresponding continuous member, that the piezo-electric element (31;33;73) of the receiver (13,14;­33-35;73-75) is connected to the first end of the trans­mission member while the piezo-electric element (31;71) of the generator (10,11;30,31;70,71) is connected to the other, opposed end of the transmission member, that the piezo-electric element (31;71) of the generator is cap­able to generate longitudinal mechanical waves in the transmission member (12;32;72;110-111), and that a bar-­shaped element (36,37;76,77) is located on the opposite side of each of the piezo-electric elements (31;33;71;­73) relative to the transmission member, which bar-shaped elements (36;37;76,77) are capable to acoustically adapt the piezo-electric elements to the transmission member.

Claim 2

A device for transmitting electric energy to el­ectric equipment, primarily computers and data nets, which device is intended to be connected between a volt­age source and the electric equipment, comprising a generator, which is intended to be connected to said voltage source and capable to generate a high-frequency mechanical wave motion and comprising a transmission member capable to transmit said motion to a receiver, which transmission member comprises a non-magnetic and electrically insulating material, in which the mechanic­al wave motion can be conducted, and said receiver, which is intended to be connected to the electric equip­ment, is capable to convert said mechanical wave motion into an electrically varying voltage, and said generator and said receiver each comprise a piezo-electric elem­ent, which are in mechanical connection with said trans­mission member, characterized in that said transmission member (12;32;72;110,111) has the shape of a bar or corresponding continuous member, that the piezo-electric element (31;33;73) of the receiver (13,14;­33-35;73-75) is connected to the first end of the trans­mission member while the piezo-electric element (31;71) of the generator (10,11;30,31;70,71) is connected to the other, opposed end of the transmission member, that the piezo-electric element (31;71) of the generator is cap­able to generate longitudinal mechanical waves in the transmission member (12;32;72;110-111), and that a bar-­shaped element (36,37;76,77) is located on the opposite side of each of the piezo-electric elements (31;33;71;­73) relative to the transmission member, which bar-shaped elements (36;37;76,77) are capable to acoustically adapt the piezo-electric elements to the transmission member.

Claim 11

A device as defined in any one of the claims 1-9, characterized in that said piezo-elec­tric elements (31,33) consist of a disc or ring of a piezo-electric ceramic, which disc or ring on its opp­osed side surfaces is provided with metal coats.

Claim 12

A device as defined in any one of the claims 1-9, characterized in that said piezo-elec­tric elements (71,73) consist of a piezo-electric plastic film, wich on its opposed side surfaces is provided with a metal coat.

Claim 13

A device as defined in any one of the claims 1-11, characterized in that said bar-shaped element (36,37;76,77) has good acoustic transmission and a length, which corresponds to one quarter of the wave length of the frequency, which is intended to be transmitted by means of said bar.

Claim 14

A device as defined in any one of the claims 1-12, characterized in that a shield (51;112), such as a metal net or metal diaphragm, is arranged through the transmission member (32;110,111) transverse­ly to the propagation direction of the mechanical wave motion and located in a node formed where the transmiss­ion member is fed with the intended frequency of the generator (30,31), which shield (51;112) is intended to be connected to an outer shield, which encloses the equipment to be protected, in order thereby to form a Faraday's cage about the equipment.

Claim 15

A device as defined in any one of the claims 1-13, characterized in that to the receiver a sensor (60) is connected to sense current and voltage on the receiving end and to transmit this information via an optic fibre (61) to an adjusting means (62), which is arranged to adjust the frequency of the gener­ator so that maximum efficiency degree is obtained at different electric loads of the receiver.