1. Electrical camshaft adjuster for adjusting and fixing a phase position of a camshaft of an internal combustion engine relative to a crankshaft, wherein the camshaft adjuster includes a triple-shaft gear drive, comprising a crankshaft-fixed drive wheel, a camshaft-fixed driven part, and an adjusting shaft, which is driven by an electric adjusting motor that comprises a pancake motor and that has a pancake and a stator which are arranged in a housing with an associated cover, the pancake motor comprises a brushless DC motor (BLDC motor).
2. Camshaft adjuster according to claim 1, wherein the housing and the cover are fixed to a cylinder head.
3. Camshaft adjuster according to claim 1, wherein the pancake has a motor shaft which is connected to the adjusting shaft by a detachable coupling.
4. Camshaft adjuster according to claim 1, wherein the cover includes a sensor module, which is comprised of plastic and in which a punched lattice is integrated, which is used for conductive connection of a plug injection-molded on the cover with position sensors for electronic commutation, as well as with connections for the stator.
5. Camshaft adjuster according to claim 1, wherein the housing includes a sensor module, which is formed of plastic and in which a punched lattice is integrated, which is used for the conductive connection of a plug injection molded on the housing with position sensors for electronic commutation, as well as with connections for the stator.
6. Camshaft adjuster according to claim 4, wherein the position sensors can be acted upon preferably by the pancake.
7. Camshaft adjuster according to claim 1, wherein the pancake is comprised of a permanent magnet, which is sintered or bonded to plastic and which is mounted on a disk-shaped carrier, by which the pancake is pressed onto the motor shaft.
8. Camshaft adjuster according to claim 1, wherein the stator is slotted or non-slotted.
9. Camshaft adjuster according to claim 5, wherein a stator yoke is provided as a toroidal magnetic-strip wound core and a stator core is formed as a sintered disk with sintered teeth as separate parts which can be joined together, or the stator yoke and the stator core are produced integrally from a wide toroidal magnetic-strip wound core by milling or stamping stator slots from the core.
10. Camshaft adjuster according to claim 1, wherein an end stage of the pancake motor has a bipolar operation.
11. Camshaft adjuster according to claim 1, wherein the pancake is supported on roller bearings and the roller bearings comprise deep groove ball bearings and are arranged in the housing and in the cover.
12. Camshaft adjuster according to claim 11, wherein the motor shaft is mounted with an inner ring of the deep groove ball bearing close to an output and with an outer ring of the deep groove ball bearing away from the output.
13. Camshaft adjuster according to claim 1, wherein an O-ring is provided between the housing and the cover as a seal and a radial shaft seal ring is provided between the motor shaft and housing.
14. Camshaft adjuster according to claim 1, wherein the pancake motor includes one air gap.
15. Camshaft adjuster according to claim 14, wherein a coaxial motor shaft compression spring acting on the motor shaft in a direction of the stator is provided.
16. Camshaft adjuster according to claim 14, wherein a coaxial stator compression spring acting on the stator in a direction of the pancake is provided.
17. Camshaft adjuster according to claim 1, wherein the pancake motor includes two air gaps.
18. Camshaft adjuster according to claim 17, wherein the stator comprises two parts with stator parts or the pancake comprises two parts with the pancake parts and each surrounds a complementary component in the axial direction.
19. Camshaft adjuster according to claim 1, wherein the winding parts of the stator are comprised of stamped sheets, molded parts, or enameled wire.
20. Camshaft adjuster according to claim 1, wherein a number of pole pairs of 2 to 12 is provided.
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 composition suitable for support in building a three-dimensional object, said composition comprising:
a non-curable component;
a curable component;
wherein said non-curable component is not relative with said curable component,
a surface-active agent; and
a stabilizer;
wherein said composition has a first viscosity of about 20-500 cps at a first temperature, wherein said first temperature, is ambient temperature, and a second viscosity lower than 20 cps at a second temperature wherein said second temperature is higher than said first temperature;
wherein, after irradiation, said composition results in a solid, a semi solid of a liquid material.
2. The composition according to claim 1, further comprising water.
3. The composition according to claim 1, further comprising at least one photo-initiator.
4. The composition according to claim 1, wherein said curable component is a (meth)acrylic component.
5. The composition according to claim 4, wherein said (meth)acrylic component is a (meth)acrylic monomer, a (meth)acrylic oligomer, a (meth)acrylic crosslinker or a combination thereof.
6. The composition according to claim 1, further comprising a water miscible component that is, after irradiation or curing, capable of dissolving or swelling upon exposure to water, to an alkaine of acidic water solution or to water detergent solution.
7. The composition according to claim 6, wherein said water miscible component is a (meth)acrylated urethane oligomer derivative of polyethylene glycol, a partially (meth)acrylated polyol oligomer, a (meth)acrylated oligomer having hydrophillic substituents, polyethylene glycol mono or di (meth)acrylated, acrylamide or any combination thereof.
8. The composition according to claim 7, wherein said hydrophilic substituents are acidic substituents, amino substituents, hydroxy substituents, ionic substituents or any combination thereof.
9. The composition according to claim 1, further comprising a molecule having one or more vinyl ether substituents.
10. The composition according to claim 1, wherein said non-curable component is polyethylene glycol, methoxypolyethylene glycol, glycerol, ethoxylated polyol, propylene glycol or any combination thereof.
11. The composition according to claim 1, wherein said non-curable component is a non-water miscible compound.
12. The composition according to claim 11, wherein said non-water miscible compound is paraffin oil.
13. The composition according to claim 3, wherein said photo-initiator is a free radical photo-initiator, a cationic photo-initiator, or any combination thereof.
14. The composition according to claim 1, further comprising a filler.
15. The composition according to claim 14, wherein said filler comprises particles having an average diameter of less than 100 mm.
16. The composition according to claim 1, further comprising a sulfur-containing component.
17. The composition according to claim 1, further comprising a low molecular weight polymer.
18. The composition according to claim 17, wherein said sulfur containing component is beta mercaptopropionate, mercaptoacetate, alkane thiols or any combination thereof.
19. The composition according to claim 1, further comprising a pigment, a dye or a combination thereof.
20. The composition according to claim 19, wherein said pigment is a white pigment, an organic pigment, an inorganic pigment, a metal pigment or a combination thereof.
21. The composition according to claim 1, wherein said first viscosity is about 30-200 cps.
22. The composition according to claim 1, wherein said second viscosity is lower than 20 cps.
23. The composition according to claim 1, wherein said second viscosity is between 10 and 1.7 cps.
24. The composition according to claim 1, wherein said second viscosity is between 12 and 16 cps.
25. The composition according to claim 1, further comprising a component able to produce gas upon exposure to water or to an alkaline or acidic water solution.
26. The composition according to claim 25, wherein said component is sodium bicarbonate, calcium bicarbonate or a combination thereof.