1. A circuit arrangement for line protection of an optical data transmission link, comprising:
at least two selectable data transmission lines, arranged between a transmitter side and a receiver side in a point-to-point network topology, through which optical signals can be transmitted via n data channels, having different frequencies;
n network elements provided at the transmitter side to convert electronic data signals to optical signals;
a multiplexer connected after each respective network elements for each data transmission line;
a demultiplexer respectively assigned to each multiplexer on each data transmission line;
a plurality of optical switches arranged on the transmitter side and receiver side, via which outputs of the demultiplexers are respectively assigned to one of the n data channels, the optical switches respectively switching the data transmission line to a respective input of n receiver side network elements for opticalelectronic conversion, and wherein the optical switches on the transmitter side mirror positions of optical switches at the receiver side;
an additional communication path between the receiver and transmitter sides in order to control the optical switches at the transmission at the transmission side;
a controlling device that manages optical switches on the transmitter side;
a monitoring device that manages optical switches at the receiver side and acts as a master to the controlling device, wherein, after the opticalelectrical conversion occurs in the receiver side network element, the signal switched via one of the optical switches is respectively applied to the monitoring device for determining quality or power values of the data transmission, and wherein, using the quality or power values determined, the monitoring device directs the controlling device to switch the optical switch to a particular optical data transmission line with better quality.
2. A circuit arrangement for line protection of an optical data transmission link as claimed in claim 1, wherein quality or performance values of the switched signal are applied to inputs of the monitoring device that is common to all receiver side network elements, with output signals derived therefrom being connected to the optical switches.
3. A circuit arrangement for line protection of an optical data transmission link as claimed in claim 1, wherein the monitoring device is used for switching of all individual switches.
4. A circuit arrangement for line protection of an optical data transmission link as claimed in claim 1, wherein Regenerator Section Termination functions are provided in the receiver side network elements for monitoring the quality of the data transmission.
5. A circuit arrangement for line protection of an optical data transmission link as claimed in claim 1, wherein parts are provided for at least one of checking a frame synchronization and determining a bit error rate for each data transmission line or data transmission channel.
6. A circuit arrangement for line protection of an optical data transmission line as claimed in claim 1, wherein the monitoring device directs the controlling device to switch the optical switch to a particular optical data transmission line with better quality if the quality of a data transmission line falls below a certain value.
7. A circuit arrangement for line protection of an optical data transmission link as claimed in claim 1, wherein at least one network element is provided for monitoring a failed data transmission line.
8. A circuit arrangement for line protection of an optical data transmission link as claimed in claim 1, wherein the data transmission lines are glass fibers.
9. A circuit arrangement for line protection of an optical data transmission link as claimed in claim 1, wherein at least two data transmission lines are provided on separate paths.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
Iwe claim:
1. A jar lid opener for loosening a threaded jar lid on
a jar comprising:
a housing;
a jar lid retainer rotatably attached to the housing for contacting the lid and for applying a twisting impact force to the lid in order to loosen the lid on the jar;
a motor installed in the housing for generating a torque;
a rotary hammer assembly installed in the housing and coupled with the motor and the jar lid retainer for converting the torque output from the motor into the twisting impact force applied by the jar lid retainer to the lid.
2. A jar lid opener as claimed in claim 1 wherein the rotary hammer assembly comprises:
a first rotary element adapted to be driven by the motor to rotate;
a second rotary element adapted to rotate together with the jar lid container; and
a hammer device driven by the first rotary element to strike the second rotary element in order to begin rotation.
3. A jar lid opener as claimed in claim 2 wherein the hammer device strikes the second rotary element repeatedly, one time per revolution of the first rotary element.
4. A jar lid opener as claimed in claim 1 wherein the rotary hammer assembly comprises:
an anvil shank engaging the jar lid retainer, rotatable together with the jar lid retainer;
a hammer member circularly moveable about an axis of the anvil shank, and being adapted to strike the anvil shank to rotate; and
means coupled with the motor for driving the hammer member to move circularly.
5. A jar lid opener as claimed in claim 4 wherein the rotary hammer assembly comprises a cam surface, the hammer member in the circular movement being guided by the cam surface to change between active and inactive positions regarding the strike action on the anvil shank.
6. A jar lid opener as claimed in claim 4 wherein the means for driving the hammer member comprises a hammer cage rotatable about the axis of the anvil shank for receiving the hammer member therein but permitting the hammer member to move axially between an upper position in which the hammer member can not be in contact with the anvil shank, and a lower position in which the hammer member can be in contact with the anvil shank when in a predetermined angular position with respect to the anvil shank.
7. A jar lid opener as claimed in claim 6 wherein the means for driving the hammer member further comprises a cam and spring assembly within the hammer cage, during each revolution of the hammer cage the cam and spring assembly moving the hammer member gradually downwards from the upper position to the lower position and urging the hammer member to return to the first position immediately after the hammer member strikes the anvil shank.
8. A jar lid opener as claimed in claim 7 wherein the hammer member comprises a pair of hammer pins.
9. A jar lid opener as claimed in claim 8 wherein the anvil shank comprises a pair of radial projections for receiving the strike by the respective hammer pins.
10. A jar lid opener as claimed in claim 4 wherein the means for driving the hammer member comprises a hammer cage rotatable about the axis of the anvil shank and a driving plate engaging a shaft of the motor and rotatable about the axis of the anvil shank, the hammer member being mounted to the hammer cage and being pivotal about an axis parallel to the axis of the anvil shank, the hammer member operatively engaging the driving plate such that the hammer member moves circularly about the axis of the anvil shank and strikes the anvil shank.
11. A jar lid opener as claimed in claim 10 wherein the anvil shank in a cross-section comprises a circumferential surface with a radial recess defined between two ends thereof circumferentially spaced apart, the circumferential surface being formed as to define a varying radial distance between the circumferential surface and the axis of the anvil shank, the hammer member thereby being guided by the circumferential surface to slightly pivot to strike one of the ends of the recess when circularly moving about the axis of the anvil shank.
12. A jar lid opener as claimed in claim 11 wherein the hammer member comprises axially extending forward and rearward edges, and a concave surface extending between the two edges, the rearward edge being guided by the circumferential surface to move outwardly and radially and thereby causing a forward edge thereof to move radially and inwardly to strike that end of the recess when the hammer member moves circularly about the axis of the anvil shank and the forward edge thereof moves over the recess to approach that end of the recess.
13. A jar lid opener as claimed in claim 12 wherein each of the respective ends of the recess comprises a rounded edge such that the forward edge of the hammer member is guided to move over the rounded edge to the circumferential surface immediately after striking the rounded edge of that end.
14. A jar lid opener as claimed in claim 1 wherein the jar lid retainer comprises a truncated conical grip head for accommodating lids of various sizes.
15. A jar lid opener as claimed in claim 14 wherein the jar lid retainer comprises a plurality of grip blades axially and radially extending on an inner surface of the conical grip head.
16. A jar lid opener for loosening a threaded jar lid on
a jar comprising:
a housing;
a jar lid retainer rotatably attached to the housing for contacting the lid and for applying a twisting impact force to the lid in order to loosen the lid on the jar;
a motor installed in the housing for generating a torque;
a rotary hammer assembly installed in the housing and coupled with the motor and the jar lid retainer for converting the torque output from the motor into the twisting impact force applied by the jar lid retainer to the lid, the rotary assembly including:
an anvil shank engaging the jar lid retainer, and rotatable together with the jar lid retainer;
a hammer cage rotatable about an axis of the anvil shank, and coupled with the motor;
at least one hammer pin received in the hammer cage, and axially moveable between an upper position in which the hammer pin cannot be in contact with the anvil shank when the hamper cage rotates, and a lower position in which the hammer pin is in an active position to strike the anvil shank, and
a cam plate attached to the anvil shank in order to force the hammer pin to move axially between the upper and lower positions when the hammer cage rotates.
17. A jar lid opener for loosening a threaded jar lid on
a jar comprising:
a housing;
a jar lid retainer rotatably attached to the housing for contacting the lid and for applying a twisting impact force to the lid in order to loosen the lid-on the jar;
a motor installed in the housing for generating a torque;
a rotary hammer assembly installed in the housing and coupled with the motor and the jar lid retainer for converting the torque output from the motor into the twisting impact force applied by the jar lid retainer to the lid, the rotary assembly including:
an anvil shank including a cam surface, the anvil shank engaging the jar lid retainer, and being rotatable together with the jar lid retainer,
a hammer cage rotatable about an axis of the anvil shank,
a hammer dog mounted on the hammer cage, and pivotal relative to the hammer cage about an axis parallel with the axis of the anvil shank, the hammer dog being guided by the cam surface of the anvil shank to strike the anvil shank one time upon each revolution of the hammer cage, and
a driving plate coupled with the motor and linked with the hammer cage for driving the hammer cage to rotate.