1. A method of forming a liner on a rotor for a positive displacement motor, the method comprising:
forming a liner on the rotor by layering at least two resilient layers and at least one fiber layer on an outer surface of the rotor, the at least two resilient layers positioned so as to enclose the at least one fiber layer, the rotor comprising at least one radially outwardly projecting lobe extending helically along a selected length of the rotor; and
curing the liner on the rotor so that the liner conforms to the at least one radially outwardly projecting lobe formed on the rotor and to the helical shape of the rotor, the curing adapted to form a bond between the liner and the outer surface and between the at least two resilient layers and the at least one fiber layer.
2. The method of claim 1, wherein the at least one fiber layer comprises a plurality of fibers wound at a selected angle with respect to a longitudinal axis of the rotor.
3. The method of claim 1, wherein the at least one fiber layer comprises a plurality of fibers wound at a selected angle with respect to the at least one radially outwardly projecting lobe.
4. The method of claim 1, wherein the at least one fiber layer comprises aramid fibers.
5. The method of claim 1, wherein the at least one fiber layer comprises a plurality of fibers selected from the group consisting of glass fibers and carbon fibers.
6. The method of claim 1, wherein the at least one fiber layer comprises a woven fiber mesh.
7. The method of claim 1, wherein the at least one fiber layer comprises a plurality of fibers wound directly onto at least one of the at least two resilient layers.
8. The method of claim 1, wherein fibers forming the at least one fiber layer are braided.
9. The method of claim 1, wherein fibers forming the at least one fiber layer are woven.
10. The method of claim 1, wherein the curing comprises applying a selected heat and a selected temperature to the rotor for a selected time period.
11. The method of claim 1, further comprising coating an inner surface of the liner with an adhesive adapted to bond the liner to the outer surface of the rotor.
12. The method of claim 1, wherein the forming comprises positioning the at least one fiber layer so as to form a substantially uniform fiber density throughout the liner after the curing.
13. The method of claim 1, wherein the forming comprises positioning at least two external fiber layers so as to enclose the at least two resilient layers.
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. An automatic phase adjusting device for adjusting a phase of a pulse used in an imaging process based on a digital imaged signal obtained by converting an analog imaged signal generated in the imaging process by an imaging element to a digital value for each pixel; the automatic phase adjusting device comprising:
a luminance level detecting unit for calculating a luminance of the digital imaged signal in a plurality of pixels within a first pixel region in the imaging element;
a variation calculating unit for calculating a variation value indicating signal variation of the digital imaged signal in a plurality of pixels within a second pixel region in the imaging element; and
a timing adjusting unit for adjusting the phase of the pulse based on the result of calculation of the luminance level detecting unit and the result of calculation of the variation calculating unit.
2. The phase adjusting device according to claim 1, further comprising an effective area control device for setting an effective area used in a luminance calculating process by the luminance level detecting unit and a variation value calculating process by the variation calculating unit in a unit data area constituting the digital imaged signal, wherein
the variation calculating unit and the timing adjusting unit perform respective process using data of the effective area set by the effective area control device.
3. The phase adjusting device according to claim 2, wherein the effective area control device adjusts a size of the effective area based on at least one of resolution, SN ratio of the analog imaged signal, and SN ratio of the digital imaged signal.
4. The phase adjusting device according to claim 2, wherein the effective area control device sets a transfer processing speed of a pixel transfer pulse in a period of outputting data area of the digital imaged signal other than the effective area as a speed different from a transfer processing speed of a pixel transfer pulse generated by the timing adjusting unit in a period of outputting the effective area.
5. The phase adjusting device according to claim 4, wherein the effective area control device sets the transfer processing speed of the pixel transfer pulse in the period of outputting the data area of the digital imaged signal other than the effective area faster than the transfer processing speed of the pixel transfer pulse generated by the timing adjusting unit in the period of outputting the effective area.
6. The phase adjusting device according to claim 4, wherein the effective area control device adjusts a period length of the effective area based on at least one of resolution, SN ratio of the analog imaged signal, and SN ratio of the digital imaged signal.
7. The phase adjusting device according to claim 1, wherein the timing adjusting unit controls the phase of the pulse independently for each line.
8. The phase adjusting device according to claim 7, wherein the timing adjusting unit controls a first pulse used in detecting a signal level of the analog imaged signal, a second pulse for detecting a signal level that acts as a reference in a correlated double sampling process performed in generating the digital imaged signal, and a pulse of an AD clock signal used in generating the digital imaged signal independently for each line.
9. The phase adjusting device according to claim 7, wherein the timing adjusting unit controls the phase of the pulse independently for each line based on at least one of resolution, SN ratio of the analog imaged signal, and SN ratio of the digital imaged signal.
10. The phase adjusting device according to claim 2, wherein the effective area control device is adapted to perform control such that a digital image signal of the effective area is outputted after being subject to a storage process, and to selectively output a clock used in the storage process only during the storage process of the effective area.
11. The phase adjusting device according to claim 2, wherein the effective area control device arranges the effective area in a unit data area such that the effective area is arranged at a center of a screen formed based on the digital imaged signal.
12. The phase adjusting device according to claim 1, further comprising a shading correction processing unit for performing shading correction on the digital imaged signal, wherein the luminance level detecting unit and the variance calculating unit perform respective processes based on the digital imaged signal subject to the shading correction by the shading correction processing unit.
13. A phase adjusting method of adjusting a phase of at least one of a first pulse used in detecting a level of an analog imaged signal outputted from an imaging element, a second pulse for detecting a signal level that acts as a reference in a correlated double sampling process performed when converting the analog imaged signal to a digital value for each pixel, and an AD clock signal used in converting the analog imaged signal to the digital value for each pixel, the method comprising the steps of:
detecting a first phase at which a luminance of the analog imaged signal becomes maximum with the second pulse and the AD clock signal fixed at respective initial values and the phase of the first pulse changed; and
setting the detected first phase as the phase of the first pulse.