1. A method of fabrication of modified activated carbon, comprising:
(a) treating pristine carbon with alkali solution having concentration of 1.0 to 10.0%;
(b) treating the resulting carbon with nitric acid having a concentration ranging from 0.2 to 10.0%;
(c) washing the resulting carbon using an ammonia solution to pH 4-10;
(d) drying the washed carbon; and
(e) annealing at 135-950\xb0 C. in an atmosphere of inert or exhaust gases, the exhaust gases resulting from the pyrolysis of carbon.
2. A method of fabrication of modified activated carbon, comprising treatment of pristine carbon with nitric acid, subsequent washing, drying, and annealing, wherein prior to acid treatment said carbon is treated with alkali solution having concentration of 1.0 to 10.0%, while the nitric acid concentration ranges from 0.2 to 10.0%, wherein after drying said carbon is annealed at 135-950\xb0 C. and wherein the carbon is annealed in an atmosphere comprising a gas chosen from the group consisting of CO2, steam, argon, air, exhaust gases, and inert gases, the exhaust gases resulting from the pyrolysis of carbon.
3. A method according to claim 2, wherein when said atmosphere is steam, said annealing step is carried out at 275\xb0 C.; when said atmosphere is argon, said annealing step is carried out at 600\xb0 C.; when said atmosphere is air, said annealing step is carried out at 250\xb0 C.; when said atmosphere is exhaust gases, said annealing step is carried out at 320-380\xb0 C.; and when said atmosphere is inert gases, said annealing step is carried out at 380\xb0.
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 sun visor for a vehicle comprising:
a sun visor body,
a support rod for mounting the sun visor body to a vehicle, wherein the sun visor body pivots on the support rod and
a biasing and holding member that biases and holds the support rod only by three regions in a circumferential direction of the support rod,
wherein the biasing and holding member is formed by bending a single leaf spring and integrally includes a support rod holding region and a biasing force generating region, the support rod holding region comprising said three regions that surround an outer surface of the support rod, and the biasing force generating region being formed at a predetermined distance from the support rod holding region in a direction transverse to the axial direction of the support rod,
wherein the biasing force generating region is provided as a mounting part for mounting the biasing and holding member to the sun visor body.
2. The sun visor as defined in claim 1, wherein the support rod holding region has two clipping regions that are opposed to each other and elastically clip the support rod, and a third contact region that receives the support rod, and wherein the two clipping regions are arranged such that respective normal of the clipping regions extends toward the third contact region and crosses to each other.
3. The sun visor as defined in claim 2, wherein the third contact region comprises an extension extending from a free end of the clipping region.
4. The sun visor as defined in claim 2, wherein the third contact region comprises an extension extending from a fixed end of the clipping region.