1. A child seat configured to be secured to a seat of a vehicle, comprising:
a seat base secured to the seat of the vehicle;
a child receiving portion supported by the seat base;
a belt tensioning system incorporated into the seat base for receiving a belt that couples the seat base to the seat of the vehicle;
a leveling system incorporated into the seat base for leveling the seat base relative to the seat of the vehicle; and
a controller operatively coupled to the belt tensioning system and the leveling system,
wherein the controller activates the belt tensioning system and the leveling system such that the belt tensioning system tensions the belt to a predetermined tension and the leveling system levels the seat base to a predetermined angle relative to the seat of the vehicle.
2. The child seat of claim 1, wherein the controller activates the belt tensioning system and the leveling system iteratively.
3. The child seat of claim 1, wherein the controller activates the belt tensioning system and the leveling system simultaneously.
4. The child seat of claim 1, wherein the controller activates the belt tensioning system and the leveling system sequentially.
5. The child seat of claim 1, wherein the belt received by the belt tensioning system is at least one of a seat belt of the vehicle or a belt of a LATCH system.
6. The child seat of claim 1, wherein the child seat is selected from the group comprising: rear-facing infant carriers; forward-facing and rear-facing convertible child seats; and booster seats with harnesses.
7. The child seat of claim 1, further comprising:
at least one sensor for determining tension of the belt received by the belt tensioning system; and
at least one sensor for determining the angle of the seat base relative to the seat of the vehicle.
8. The child seat of claim 7, wherein the at least one sensor for determining tension and the at least one sensor for determining the angle are operatively coupled to the controller.
9. The child seat of claim 8, wherein the controller activates the belt tensioning system and the leveling system such that the belt tensioning system tensions the belt to a predetermined tension and the leveling system levels the seat base to a predetermined angle relative to the seat of the vehicle based on feedback from the at least one sensor for determining tension and the at least one sensor for determining the angle.
10. The child seat of claim 1, further comprising a user interface positioned on at least one of the seat base or the child receiving portion to allow a user to initiate the belt tensioning system and the leveling system.
11. The child seat of claim 10, wherein the user interface provides feedback to the user of a status of the child seat.
12. The child seat of claim 1, wherein the leveling system is configured to raise and lower a foot connected to a bottom surface of the seat base.
13. A child car seat comprising:
a seat base secured to a seat of a vehicle;
an infant carrier removably connected to the seat base;
a belt tensioning system incorporated into the seat base for receiving a belt that couples the seat base to the seat of the vehicle;
a leveling system incorporated into the seat base for leveling the seat base relative to the seat of the vehicle; and
a controller operatively coupled to the belt tensioning system and the leveling system,
wherein the controller activates the belt tensioning system and the leveling system such that the belt tensioning system tensions the belt to a predetermined tension and the leveling system levels the seat base to a predetermined angle relative to the seat of the vehicle.
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 process for preparing an article having a low-fouling surface on a substrate, the substrate having a surface, a bulk beneath the surface, and a near-surface zone lying between the surface and the bulk, the substrate surface having (a) a Rrms surface roughness of at least 100 nm, (b) a surface density of at least 0.1 defects\u03bcm2 of defects having a size greater than 0.5 micrometers, or (c) a continuous phase of a first material and particles of a second material dispersed in the continuous phase at the surface or in the near-surface zone of the substrate, the first material being polymeric and the first and second material being different, the process comprising coating the substrate surface with a polymeric primer coat, and forming a low-fouling grafted polymer layer on the primer coated substrate, the primer coated substrate surface and the grafted polymer layer, in combination, constituting a low-fouling surface having a fibrinogen adsorption of less than about 125 ngcm2 in a fibrinogen binding assay in which the low-fouling surface is incubated for 60 minutes at 37\xb0 C. in a composition containing 70 \u03bcgmL fibrinogen derived from human plasma and 1.4 \u03bcgmL I-125 radiolabeled fibrinogen.
2. An article of manufacture comprising a grafted polymer layer, a substrate having a surface, and a polymeric primer layer between the substrate surface and the grafted polymer layer, the substrate comprising a continuous phase of a polymeric material and a discontinuous phase of an inorganic material dispersed in the continuous phase, the substrate having a concentration of the inorganic material that increases as a function of distance from the substrate surface, the concentration of the inorganic material within 2 micrometers of the substrate surface being less than the concentration of the inorganic material at a distance of at least 20 micrometers from the substrate surface, the substrate surface and the grafted polymer layer, in combination, constituting a low-fouling surface having a fibrinogen adsorption of less than about 125 ngcm2 in a fibrinogen binding assay in which the low-fouling surface is incubated for 60 minutes at 37\xb0 C. in a composition containing 70 \u03bcgml fibrinogen derived from human plasma and 1.4 \u03bcgml I-125 radiolabeled fibrinogen.
3. The process of claim 1 wherein the low-fouling surface has a fibrinogen adsorption of less than 90 ngcm2.
4. The process claim 1 wherein the low-fouling surface has a fibrinogen adsorption of less than 70 ngcm2.
5. The article of claim 2 wherein the low-fouling surface has a fibrinogen adsorption of less than 50 ngcm2.
6. The process of claim 1 wherein the low-fouling surface has a fibrinogen adsorption of less than 30 ngcm2.
7. The process of claim 1 wherein the low-fouling surface has an antibiofilm activity of 1 log after 30 days storage in PBS at 37\xb0 C.
8. The process of claim 1 wherein the low-fouling surface has an antibiofilm activity of 2 log after 30 days storage in PBS at 37\xb0 C.
9. The article of claim 2 wherein the low-fouling surface has an antibiofilm activity of 2 log after 90 days storage in PBS at 37\xb0 C.