All The Claims

1. A hydraulic pipe comprising a layer comprising mostly polyphthalamide and at least one layer of another thermoplastic material, the pipe having thickness that is formed mainly by the thickness of the layer of polyphthalamide.
2. A pipe according to claim 1, in which the thickness of the layer of polyphthalamide is five to ten times greater than the thickness of the layer of thermoplastic material.
3. A pipe according to claim 2, in which the thickness of the layer of polyphthalamide is about 1 mm to 1.5 mm, and the thickness of the layer of thermoplastic material is about 0.2 mm.
4. A pipe according to claim 1, in which the outer layer of thermoplastic material is made of a thermoplastic elastomer.
5. A pipe according to claim 1, in which the outer layer of thermoplastic elastomer is made of a fluoropolymer.
6. A pipe according to claim 5, in which the fluoropolymer is a terpolymer of tetrafluoroethylene, hexafluoropropylene, and fluorinated vinylidene.
7. A pipe according to claim 1, in which the layer of thermoplastic material is directly in contact with the layer of polyphthalamide.
8. A pipe according to claim 2, in which the layer of polyphthalamide is the innermost layer of the tube.

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 screen apparatus for a vehicle, comprising:
a screen for displaying an image thereon;
a support frame supporting the screen such that the screen is rotatable between an operation position, at which the screen is perpendicular to a ceiling surface of the vehicle to display the image thereon, and a storage position, at which the screen is parallel to the ceiling surface of the vehicle; and
a vibration absorbing unit provided between the support frame and the ceiling surface of the vehicle, the vibration absorbing unit having a plurality of elastic wires to absorb vibrations transmitted in multiple directions from the vehicle to the support frame.
2. The screen apparatus for the vehicle according to claim 1, wherein the vibration absorbing unit comprises:
a first mounting block fastened to the support frame;
a second mounting block fastened to the ceiling surface of the vehicle; and
the plurality of elastic wires elastically coupling the first mounting block and the second mounting block to each other, each of the plurality of elastic wires having an arc shape.
3. The screen apparatus for the vehicle according to claim 1, wherein the support frame comprises:
a pair of screen support members placed parallel to each other and rotatably supporting respective opposite edges of the screen; and
a connection member connecting the screen support members to each other, the connection member being coupled to the ceiling surface of the vehicle.
4. The screen apparatus for the vehicle according to claim 3, further comprising:
a hinge shaft rotatably coupling the screen to the support frame;
a guide rail provided on each of the opposite edges of the screen;
a movable roller unit having a roller so as to be reciprocable along the guide rail; and
a link rotatably coupled at a first end thereof to the support frame and rotatably coupled at a second end thereof to the movable roller unit, so that the link restricts rotation of the screen.
5. The screen apparatus for the vehicle according to claim 4, further comprising:
a pair of locking units provided in each of the guide rails on respective opposite sides of the movable roller unit, with a locking hook extending from each of the locking units towards the movable roller unit; and
a pair of locking holes formed in respective opposite ends of the movable roller unit, so that the locking hook of one locking unit, selected depending on whether the screen is in the operation position or the storage position, is locked to the corresponding locking hole.
6. The screen apparatus for the vehicle according to claim 5, further comprising:
a spring provided in each of the locking units to provide elastic force to the locking hook of the locking unit such that the locking hook maintains a state of being locked to the corresponding locking hole.
7. The screen apparatus for the vehicle according to claim 4, further comprising:
a stopper to restrict the rotation of the screen with respect to the support frame when the screen is in the operation position or the storage position.
8. The screen apparatus for the vehicle according to claim 7, wherein the stopper comprises:
a pair of balls provided in each of the guide rails, with the corresponding screen support member disposed between the balls; and
a plurality of ball seating holes formed in each of the screen support members at predetermined positions corresponding to the operation position and the storage position of the screen, so that the balls are removably seated into the ball seating holes.
9. The screen apparatus for the vehicle according to claim 2, wherein the support frame comprises:
a pair of screen support members placed parallel to each other and rotatably supporting respective opposite edges of the screen; and
a connection member connecting the screen support members to each other, the connection member being coupled to the ceiling surface of the vehicle.

1. An adhesion promoter for plastisols, characterized in that the adhesion promoter comprises not only a polyaminoamide but also at least 10% by weight, and at most 60% by weight, based on the total weight of adhesion promoter, of ethyldiglycol.
2. The adhesion promoter according to claim 1, characterized in that the proportion of ethyldiglycol is from 25% by weight to 55% by weight, based on the total weight of the adhesion promoter.
3-7. (canceled)
8. The adhesion promoter according to claim 1, characterized in that the proportion of ethyldiglycol is from 40% by weight to 50% by weight, based on the total weight of the adhesion promoter.
9. A plastisol composition comprising an adhesion promoter according to claim 1 and fine-particle polyvinyl chloride or vinyl chloride copolymers.
10. The plastisol composition according to claim 9 further comprising conventional plasticizers, fillers, and additives.
11. The plastisol composition according to claim 9 wherein the adhesion promoter is present in an amount of from 0.3% by weight to 5% by weight, based on the weight of the plastisol composition.
12. The plastisol composition according to claim 11, wherein the adhesion promoter is present in an amount of from 0.5% by weight to 2% by weight, based on the weight of the plastisol composition.
13. The plastisol composition according to claim 12, wherein the adhesion promoter is present in an amount of 1% by weight, based on the weight of the plastisol composition.
14. A method for improving the adhesion of a plastisol composition to a substrate by adding to the plastisol composition an adhesion promoter comprising a polyaminoamide and ethyldiglycol wherein the ethyldiglycol is present in the adhesion promoter in an amount of at least 10% by weight and at most 60% by weight, based on the total weight of adhesion promoter.
15. The method of claim 14, wherein the ethyldiglycol is present in the adhesion promoter in an amount of from 25% by weight to 55% by weight, based on the total weight of the adhesion promoter.
16. The method according to claim 14, wherein the adhesion promoter is added in an amount of from 0.3% by weight to 5% by weight, based on the weight of the plastisol composition.
17. A method for coating a substrate comprising the steps of adding an adhesion promoter according to claim 1 to a plastisol composition comprising fine-particle polyvinyl chloride or vinyl chloride copolymers to form a mixture, homogenizing the mixture, applying the mixture to the substrate, and stoving the substrate at a temperature of from 120\xb0 C. to 160\xb0 C.
18. A process for producing a self-adhesive plastisol by adding an adhesion promoter according to claim 1 to a plastisol composition comprising fine-particle polyvinyl chloride or vinyl chloride copolymers to form a mixture and homogenizing the mixture to form the self-adhesive plastisol.
19. The process according to claim 18 wherein the adhesion promoter is added in an amount of from 0.3% by weight to 5% by weight, based on the weight of the self-adhesive plastisol.

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 zoom lens system comprising, in the order from an object side:
(a) a first lens group which has a negative refractive power;
(b) a second lens group which has a positive refractive power; and
(c) a third lens group which has a positive refractive power in the order from the object side,
wherein power of the zoom lens system is varied from a wide-angle end to a telephoto end by changing distances among the lens groups, and
wherein the second lens group has a three-element cemented lens comprising a positive lens c1, a negative lens c2, and a positive lens c3 in the order from the object side.
2. The zoom lens of claim 1, wherein the second lens group comprises the three-element cemented lens and at least one negative lens.
3. The zoom lens of claim 2, wherein the three-element cemented lens satisfies the following conditional expressions:
0.05<nc1\u2212nc2

5<\u03bdc1\u2212\u03bdc2

where nc1 represents refractive index of the lens c1, nc2 represents refractive index of the lens c2, \u03bdc1 represents Abbe’s number of the lens c1, and \u03bdc2 represents Abbe’s number of the lens c2.
4. The zoom lens of claim 2, wherein the three-element cemented lens satisfies the following conditional expressions:
0.05<nc3\u2212nc2

5<\u03bdc3\u2212\u03bdc2

where nc2 represents refractive index of the lens c2, nc3 represents refractive index of the lens c3, \u03bdc2 represents Abbe’s number of the lens c2, and \u03bdc3 represents Abbe’s number of the lens c3.
5. The zoom lens of claim 2, wherein the lens c1 satisfies the following conditional expressions:
1.65<nc1

35<\u03bdc1

where nc1 represents refractive index of the lens c1, and \u03bdc1 represents Abbe’s number of the lens c1.
6. The zoom lens of claim 2, wherein the lens c2 satisfies the following conditional expressions:
nc2<1.70

\u03bdc2<50\u2003\u2003(14)

where nc2 represents refractive index of the lens c2, and \u03bdc2 represents Abbe’s number of the lens c2.
7. The zoom lens of claim 2, wherein the lens c3 satisfies the following conditional expressions:
1.60<nc3\u2003\u2003(17)

40<\u03bdc3\u2003\u2003(18)

where nc3 represents refractive index of the lens c3, and \u03bdc3 represents Abbe’s number of the lens c3.
8. The zoom lens of claim 2, wherein the three-element cemented lens satisfies the following conditional expression:
0.2<fcf2<1.2\u2003\u2003(21)

where fc represents a focal length of the three-element cemented lens, and f2 represents a focal length of the second lens group.
9. The zoom lens of claim 2, wherein at least a lens of the second lens group which is closest to an image side is a plastic lens.
10. The zoom lens of claim 1, wherein the second lens group is composed of the three-element cemented lens.
11. The-zoom lens of claim 10, wherein the three-element cemented lens satisfies the following conditional expressions:
0<nc1\u2212nc2

5<\u03bdc1\u2212\u03bdc2

where n c1 represents refractive index of the lens c1, nc2 represents refractive index of the lens c2, \u03bdc1 represents Abbe’s number of the lens c1, and \u03bdc2 represents Abbe’s number of the lens c2.
12. The zoom lens of claim 10, wherein the three-element cemented lens satisfies the following conditional expressions:
\u22120.05>nc3\u2212nc2

0<\u03bdc3\u2212\u03bdc2

where nc2 represents refractive index of the lens c2, nc3 represents refractive index of the lens c3, \u03bdc2 represents Abbe’s number of the lens c2, and \u03bdc3 represents Abbe’s number of the lens c3.
13. The zoom lens of claim 10, wherein the lens c1 satisfies the following conditional expressions:
1.65<nc1

35<\u03bdc1

where nc1 represents refractive index of the lens c1, and \u03bdc1 represents Abbe’s number of the lens c1.
14. The zoom lens of claim 10, wherein the lens c2 satisfies the following conditional expressions:
1.65<nc2<1.85

\u03bdc2<50

where nc2 represents refractive index of the lens c2, and \u03bdc2 represents Abbe’s number of the lens c2.
15. The zoom lens of claim 10, wherein the lens c3 satisfies the following conditional expressions:
1.70>nc3

65>\u03bdc3

where nc3 represents refractive index of the lens c3, and \u03bdc3 represents Abbe’s number of the lens c3.
16. The zoom lens of claim 10, wherein the lens c3 is a positive meniscus lens with convex surface thereof faced to the object side.
17. The zoom lens of claim 1, wherein the zoom lens satisfies the following conditional expression:
0.9<SD2Y<2.0

where SD represents sum of axial thickness of the lens groups, and 2Y represents a diagonal length of an image-pickup device.