1. A system for securing a device to a shaft comprising:
a device;
a mount of hardened material secured to the device:
a shaft including an axial groove and a radial groove, wherein the mount is insertable within the axial and radial groove to secure and prevent movement of the device.
2. The system of claim 1, wherein the mount comprises:
a first wedge of hardened material;
a second wedge of hardened material; and
a median positioned therebetween the first and second wedges, wherein the first wedge, second wedge and median comprise a single component of hardened material.
3. The system of claim 1, wherein the device is a fan.
4. The system of claim 1, wherein the shaft is comprised within a motor.
5. The system of claim 1, further comprising:
a plurality of apertures provided in the device, wherein each device aperture corresponds to an aperture provided within one of the first wedge and the second wedge of the mount;
a bolt threaded through each of the corresponding apertures of the device and the aperture of each wedge of the mount; and
a securing element for tightening the bolt to secure the device to the mount.
6. The system of claim 5, wherein the securement element is a nut.
7. The system of claim 1, further comprising:
an external surface of the shaft having a concave shape of a specified degree of curvature; and
a contact edge of the mount having a concave shape corresponding to the concave shape of a specified degree of curvature of the radial groove of the shaft, wherein the corresponding concave shape of a specified degree of curvature enables a secure fit between the mount and the radial groove of the shaft to prevent radial and axial movement.
8. The system of claim 1, wherein at least two of the mounts secure the device to the shaft.
9. The system of claim 1, wherein the hardened material is galvanized steel.
10. A method for securing a device to a shaft comprising:
providing a device;
positioning a mount of hardened material to the device;
securing the mount to the device; and
inserting the mount within an axial groove and a radial groove of a shaft, wherein the mount secures the device to prevent axial and radial movement of the device.
11. The method of claim 9, wherein the mount comprises:
a first wedge of hardened material;
a second wedge of hardened material; and
a median positioned therebetween the first and second wedges, wherein the first wedge, second wedge and median comprise a single component of hardened material.
12. The method of system of claim 10, wherein the device is a fan.
13. The method of claim 10, wherein the shaft is comprised within a motor.
14. The method of claim 10, further comprising:
positioning a plurality of apertures provided in the device to each of a corresponding aperture provided within one of the first wedge and the second wedge of the mount;
threading a bolt through each of the corresponding apertures of the device and the aperture of each wedge of the mount; and
axially turning a securing element around the bolt to secure the device to the mount.
15. The method of claim 10, wherein the securement element is a nut.
16. The method of claim 10, further comprising:
providing an external surface of the shaft having a concave shape of a specified degree of curvature;
providing a contact edge of the mount having a concave shape corresponding to the concave shape of a specified degree of curvature of the radial groove of the shaft; and
inserting the corresponding concave shape of a specified degree of curvature between the mount and the radial groove of the shaft to secure the mount to the shaft to prevent radial and axial movement of the device.
17. The method of claim 10, further comprising:
securing at least two of the mounts to the device.
18. The method of claim 10, wherein the hardened material is galvanized steel.
19. A system for securing a device to a shaft comprising:
a device;
a mount of hardened material having a insertion edge with a concave shape secured to the device; and
a shaft including an axial groove having a concave shape and a radial groove, wherein the mount along the insertion edge is insertable within the axial and radial groove, the concave shape of the insertion edge of the mount and the concave shape of the axial groove promoting a secure fit between the shaft and the mount to prevent axial and radial movement of the device.
20. The system of claim 19, wherein the mount comprises:
a first wedge of hardened material;
a second wedge of hardened material; and
a median positioned therebetween the first and second wedges, wherein the first wedge, second wedge and median comprise a single component of hardened material.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method of mitigating a communication lag time variation in a DSL communication system, caused by a first DSL modem, comprising,
interspersing dummy data with a variable bit rate first data stream to form a combined data stream;
supplying the first data stream to an electronic subsystem of the first DSL modem;
wherein a rate at which the dummy data is supplied increases in response to a decrease in the bit-rate for the first data stream;
whereby an increase in the communication lag time resulting from the decrease in the bit-rate is mitigated or avoided by the addition of the dummy data.
2. The method of claim 1, further comprising:
separating the first data stream from the combined data stream prior to transmitting the first data stream over a line;
whereby the first data stream is transmitted over the line without the dummy data.
3. The method of claim 2, wherein the first electronic subsystem is an interleaver.
4. The method of claim 3, wherein the dummy data is passed through at least one additional electronic subsystem prior to transmission over the line.
5. The method of claim 4, wherein the additional electronic subsystem is a forward error correction encoder.
6. The method of claim 1, further comprising:
transmitting the combined data stream over a line; and
separating the first data stream from the combined data stream;
whereby the first data stream is recovered and the dummy data is discarded following transmission over the line.
7. The method of claim 6, wherein the electronic communication system uses frequency division duplexing and at least part of the dummy data is selectively transmitted on different frequencies from data of the first data stream.
8. The method of claim 7, wherein an error rate for transmission at the frequencies at which only dummy data is transmitted is allowed to be much greater than an error rate at the frequencies at which data of the first data stream is transmitted.
9. The method of claim 8, wherein an average power level for the frequencies on which only dummy data is transmitted is at least one order of magnitude less than an average power level for the frequencies on which the first data stream is transmitted.
10. The method of claim 8, wherein an average power level for the frequencies on which the first data stream is transmitted is substantially reduced shortly after increasing the rate at which the dummy data is supplied.
11. A DSL communication system adapted to operate according to the method of claim 1.
12. The DSL system of claim 11, wherein the system provides seamless rate adaptation with forward error correction.
13. The method of claim 1, wherein the bit rate for the first data stream is varied by discrete amounts to facilitate mitigating or eliminating the delay variation using the dummy data.
14. A method of operation for a DSL modem having an interleaver, comprising:
connecting the DSL modem to a data stream having an adjustable bandwidth;
using dummy data to increase the speed at which the interleaver processes the data stream at lower bandwidths.
15. The method of claim 14, wherein the dummy data is discarded prior to transmitting the data stream over a line.
16. The method of claim 14, wherein the dummy data is transmitted over a line.
17. A DSL modem, comprising:
an FEC encoder;
an interleaver; and
a modulator;
wherein, the DSL modem is configured to selectively provide dummy data to the interleaver in order to stabilize transmission delays.
18. The DSL modem of claim 17, wherein the modem is configured to pass the dummy data through the FEC encoder.
19. The DSL modem of claim 17, wherein the modem is configured to transmit the dummy data over a line.
20. The DSL modem of claim 19, wherein the modem is configured to transmit dummy data at a power reduced as compared to a power level for transmitting an equal amount of non-dummy data.