Author: claimsbot

1. An inkjet printhead, comprising:
an ink flow channel including a pressure chamber to contain ink;
a nozzle to communicate with the pressure chamber;
an actuator to provide a driving force to eject the ink from the pressure chamber; and
a plurality of electrodes which are disposed, facing the actuator, in the bottom of the pressure chamber away from the nozzle to form a non-uniform electric field according to applied voltages in the pressure chamber such that the electric field causes moving of bubbles contained in the pressure chamber out of the nozzle, wherein
the plurality of electrodes are disposed on walls forming the ink flow channel.
2. The inkjet printhead of claim 1, wherein the voltages are variable-frequency, traveling-pulse voltages.
3. A printhead, comprising:
a chamber layer comprising an ink chamber to contain ink;
a nozzle layer disposed on the chamber layer and comprising a nozzle in communication with the ink chamber to eject the ink from the ink chamber;
an actuator to provide a driving force to eject the ink from the ink chamber through the nozzle; and
a plurality of electrodes disposed, facing the actuator, in the bottom of the ink chamber away from the nozzle to move bubbles in the ink contained in the ink chamber out of the nozzle, wherein
the plurality of electrodes generates a non-uniform electric field in the ink chamber to dielectrically polarize the bubbles and applies a force to move the polarized bubbles towards the nozzle, wherein the plurality of electrodes is disposed on a wall of the ink chamber.
4. The printhead of claim 3, wherein the plurality of electrodes move the bubbles in the ink to the nozzle using dielectrophoresis.
5. The printhead of claim 3, wherein shapes of at least a portion of the plurality of electrodes are non-uniform shapes.
6. The printhead of claim 5, wherein the non-uniform shapes include at least one of a flat panel shape extending in a width direction of the ink chamber, and a flat panel shape including branches protruding in a length direction of the ink chamber.
7. The printhead of claim 3, further comprising:
a voltage applying unit to apply voltages to the plurality of electrodes.
8. The printhead of claim 7, wherein the voltage applying unit applies a first voltage to a portion of the plurality of electrodes disposed closer to the nozzle, and applies a second voltage to a portion of the plurality of electrodes disposed farther from the nozzle.
9. The printhead of claim 8, wherein the first voltage is lower than the second voltage.
10. The printhead of claim 7, wherein the voltages applied by the voltage applying unit are variable-frequency traveling pulse voltages to accelerate the movement of the bubbles towards the nozzle.
11. The printhead of claim 3, wherein the actuator is selected from a thermal actuator and a piezoelectric actuator.
12. The printhead of claim 3, wherein the chamber layer further comprises:
a manifold to supply ink to the ink chamber; and
a restrictor to restrict a back flow of ink from the ink chamber to the manifold
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 hair securing apparatus, comprising:
a piece of headwear having an open loop aperture being generally defined by a C-shape perimeter; and,
a removable hair securing means removably secured within said perimeter.
2. The apparatus of claim 1, wherein said headwear is a hat.
3. (canceled)
4. (canceled)
5. The apparatus of claim 1, wherein said hair securing means comprises a first portion of a hook-and-loop fastener assembly, said first portion removably securable to a second portion of said hook-and-loop fastener assembly, said second portion integrally formed or otherwise stitched to said aperture of said headwear along said C-shape perimeter.
6. The apparatus of claim 5, wherein said first portion is coupled to an elastic strap closing said open loop aperture, said elastic strap stretchable and twistable around a portion of hair for securing the portion of hair thereby forming a smaller closed loop around the portion of hair within said C-shape perimeter.
7. (canceled)
8. The apparatus of claim 1, wherein said hair securing means is selected from the group consisting of hook-and-loop fasteners, peg-and-slot assembliesstraps, snap-button assembliesstraps, rib-and-groove assembliesstraps, zipper assembliesstraps, ridge-and-channel assembliesstraps, elastic hair straps, elastic hair bands, hair loops, hair ties, bungee bands, scrunchies, scarves, head bands, hair slides, adjustable bands, and combinations thereof.
9. A hair securing apparatus, comprising:
a hat having an open-loop aperture; and,
a detachable closed-loop hair securing strap, said detachable hair securing strap removably secured to said open-loop aperture, thereby closing said open-loop aperture.
10. (canceled)
11. The apparatus of claim 10, wherein said detachable hair securing strap is removably secured to at least a portion of a C-shape perimeter defining said aperture.
12. The apparatus of claim 11, wherein said detachable closed-loop hair securing strap comprises a first C-shape fastening portion, said first fastening portion removably securable to a second C-shape fastening portion carried by said C-shape perimeter defining said aperture of said hat.
13. The apparatus of claim 12, wherein said first fastening portion is coupled to a flexible, stretchable and resilient strap, said strap stretchable and twistable around a portion of hair for securing the portion of hair, thereby securing the portion of hair within a second closed loop positioned within said closed loop.
14. The apparatus of claim 9, wherein said detachable hair securing strap is selected from the group consisting of hook-and-loop fasteners, peg-and-slot assembliesstraps, snap-button assembliesstraps, rib-and-groove assembliesstraps, zipper assembliesstraps, ridge-and-channel assembliesstraps, elastic hair straps, elastic hair bands, hair loops, hair ties, bungee bands, scrunchies, scarves, head bands, hair slides, adjustable bands, and combinations thereof.
15. A detachable hair securing apparatus adapted to be removably secured to a piece of headwear, said detachable hair securing apparatus comprising:
a first fastening portion, said first fastening portion removably securable to a second fastening portion, said second fastening portion positioned along a C-shape aperture on by the headwear; and,
a hair securing means, wherein said first fastening portion is coupled to a portion of an outer perimeter of said hair securing means.
16. (canceled)
17. The detachable hair securing apparatus of claim 15, wherein said hair securing means is stretchable and twistable around a portion of hair for securing the portion of hair, within a small loop formed within a larger loop secured within said C-shape aperture.
18. The apparatus of claim 15, wherein said first fastening portion is selected from the group consisting of hook-and-loop fasteners, peg-and-slot assembliesstraps, snap-button assembliesstraps, rib-and-groove assembliesstraps, zipper assembliesstraps, ridge-and-channel assembliesstraps, and combinations thereof.
19. The apparatus of claim 15, wherein said second fastening portion is selected from the group consisting of hook-and-loop fasteners, peg-and-slot assembliesstraps, snap-button assembliesstraps, rib-and-groove assembliesstraps, zipper assembliesstraps, ridge-and-channel assembliesstraps, and combinations thereof.
20. The apparatus of claim 15, wherein said hair securing means is selected from the group consisting of elastic hair straps, elastic hair bands, hair loops, hair ties, bungee bands, scrunchies, scarves, head bands, hair slides, adjustable bands, and combinations thereof.

I claim:

1. A work holding tool system, comprising:
a. a primary base member having a plurality of evenly-spaced-apart peg openings;
b. at least one flexible arm member including a plurality of longitudinally aligned, interlocking ball-and-socket joint segments enabling said flexible arm member to be twisted and disposed at different angles, said flexible arm member including an upper end joint segment and a lower end joint segment;
c. an adjustable part holder attached to said upper end joint segment of said flexible arm member; and,
d. a peg opening attachment means attached to said lower end joint segment for selectively attaching said flexible arm to one of said peg opening on said base member.
2. The work holding tool system, as recited in claim 1, further including a panel member attached to said primary base member.
3. The work holding tool system, as recited in claim 2, wherein said panel member is removably attached to said base member.
4. The work holding tool system, as recited in claim 1, further including a secondary base member perpendicularly aligned and attached to said primary base member, said secondary base member having a plurality of evenly-spaced apart peg openings.
5. The work holding tool system, as recited in claim 4, wherein said secondary base member includes a pair of longitudinally aligned legs that fit into said pair of peg openings formed on said primary base member to hold said secondary base member in a perpendicularly aligned position on said primary base member.
6. The work holding tool system, as recited in claim 1, wherein said peg opening attachment means is an elastic bushing that fits snuggly into said peg opening.
7. The work holding tool system, as recited in claim 6, further including means for adjusting the cross-sectional area of the bushing to adjust the fitting inside said peg opening.
8. The work holding tool system, as recited in claim 4, further including a panel member attached to said primary base member.
9. The work holding tool system, as recited in claim 1, wherein said adjustable part holder is a clamp.
10. A work holding tool system, comprising:
a. a primary base member having a plurality of evenly-spaced-apart peg openings;
b. at least one flexible arm member including a plurality of longitudinally aligned, interlocking ball-and-socket joint segments enabling said flexible arm member to be twisted and disposed at different angles, said flexible arm member including an upper end joint segment and a lower end joint segment;
c. an adjustable part holder attached to said upper end joint segment of said flexible arm member wherein said adjustable part holder is a clamp;
d. a peg opening attachment means attached to said lower end joint segment for selectively attaching said flexible arm to one of said peg opening on said base member wherein said peg opening attachment means is an elastic bushing that fits snuggly into said peg opening; and,
e. a panel member attached to said primary base member.
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. Method for operating an electromotive drive, in particular a single drive of a textile machine, comprising a contactlessly mounted rotor (1), catch bearings (10), wherein the rotor (1) rests on one of the catch bearings (10) prior to initial operation of the electromotive drive, and from which the rotor (1) is spaced apart during stationary operation by a bearing air gap, as well as a control device, which comprises a position sensor (11) and at least one actuator coil (5) and which allows the rotor (1) to be held in a force-free floating state during stationary operation wherein the rotor floats axially about a working point, characterized by the following steps:
inputting an output signal (ASI) generated by an integrator (15) of the control device for maintaining the force-free floating state during operation;
calculating the bearing air gap by evaluating the output signal (ASI);
comparison of the calculated value for the bearing air gap with predeterminable limit values;
switching off the electromotive drive when the limit values are passed.
2. Method according to claim 1, characterized in that before starting up the electromotive drive, to fix limit values, the catch bearing stops are measured to determine the extreme values of the bearing air gap to fix limit values.
3. Method according to claim 2, characterized in that the predeterminable limit values are established below the extreme values determined.
4. Method according to claim 1, characterized in that after each time the electromotive drive is switched off, the measurement of the bearing stops is carried out before the electromotive drive is started up again.
5. Method according to claim 1, characterized in that before the run-up of the rotor (1), a reference value of a working point of the rotor (1) in the floating state is determined, so a deviation of a working point adjusted during stationary operation from this reference value is determined.
6. Method according to claim 5, characterized in that the reference value is determined from the average value of the catch bearing spacings.
7. Method according to claim 5, characterized in that the reference value of the working point of the rotor (1) in the floating state is predetermined when the rotor (1) has reached its operating speed.
8. Method according to claim 5, characterized in that the switching off of the electromotive drive is brought about by a defined deviation of the working point adjusted in each case in stationary operation from the reference value.
9. Method according claim 1, characterized in that the output signal (ASI) is linearised for small bearing air gaps.
10. Method according to claim 1, characterized in that to evaluate the output signal (ASI), the control device is in operative connection with a control arrangement.
11. Method according to claim 10, characterized in that to amplify the output signal (ASI), the control arrangement has a differential amplifier (16).
12. Method according to claim 11, characterized in that the input of the differential amplifier (16) is loaded with an additional pulse width-modulated signal, which is produced by the control arrangement.
13. Method according to claim 12, characterized in that to compensate the deviations occurring during the transition of the operating state of the electromotive drive from the time of the run-up until the stationary operating state is reached, from the state of equilibrium in the floating state of the rotor (1), the pulse width modulation of the signal is changed with a time delay.
14. Electromotive drive, in particular for a textile machine, comprising a contactlessly mounted rotor (1), catch bearings (10), wherein the rotor (1) rests on one of the catch bearings (10) prior to initial operation of the electromotive drive, and from which the rotor (1) is spaced apart during stationary operation by a bearing air gap, as well as a control device, which comprises a position sensor (11) and at least one actuator coil (5) and which allows the rotor (1) to be held in a force-free floating state during stationary operation wherein the rotor floats axially about a working point, characterized in that the position sensor (11) has with at least one sensor coil (87), the at least one actuator coil (5) is can be provided with, electrical energy in a defined manner, the control device further comprises a position controller (12) and an integrator (15), at which an output signal (ASI) is picked up, the control device is connected to a control arrangement to evaluate the output signal (ASI) and calculate the bearing air gap and the control arrangement is set up to compare the calculated value for the bearing air gap with predeterminable limit values and to switch off the electromotive drive when the limit values are passed.
15. Electromotive drive according to claim 14, characterized in that the control arrangement comprises a digital control unit (18).
16. Electromotive drive according to claim 15, characterized in that the control arrangement comprises an amplifier (16), an analoguedigital converter (17) and a digitalanalogue converter (19), via which the control unit (18) can be connected to the control device.
17. Electromotive drive according to claim 14, characterized in that for contactless mounting of the rotor (1), the mounting is designed as a magnetic bearing arrangement.
18. Electromotive drive according to claim 14, characterized in that for contactless mounting of the rotor (1), the mounting is designed as a combination of a magnetic and a gas bearing arrangement.
19. Electromotive drive according to claim 14, characterized in that the rotor (1) is designed as a spinning rotor.
20. Electromotive drive according to claim 14, characterized in that the drive is designed as a drive for a rotor spinning machine.