1. A reservoir tank of a brake master cylinder comprising:
a reservoir body to store oil therein, the reservoir body being provided with an oil introduction port;
a filter interrupted by a fixing step arranged at a lower portion of the oil introduction port; and
a reservoir cap arranged at an upper portion of the oil introduction port,
wherein a vent member is provided between the fixing step and the filter, to allow inflow of air therethrough during introduction of oil.
2. The reservoir tank according to claim 1, wherein: the filter comprises a flange part interrupted by the fixing step and a body part passing through the fixing step; and
wherein the flange part or the fixing step is formed with at least one vent protrusion provided between the flange part and the fixing step facing each other.
3. The reservoir tank according to claim 2, wherein the at least one vent protrusion comprises a plurality of vent protrusions arranged spaced apart from each other on a bottom surface of the flange part in a circumferential direction.
4. The reservoir tank according to claim 2 or 3, wherein the body part comprises an interruption protrusion interrupted by the fixing step,
wherein the fixing step of the oil introduction port is interposed between the vent protrusion and the interruption protrusion.
5. The reservoir tank according to claim 4, wherein a space between the vent protrusion and the interruption protrusion is wider than a thickness of the fixing step.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A passive control system for taking a three dimensional picture, comprising
a 2D-3D converting device with two ends, one of the ends connecting with a digital picture taking apparatus via a shift interface, the other one of the ends connecting with a data processing center, providing a preset program to regulate the digital picture taking apparatus with a start of scanning at a preset time;
a rotary disk apparatus, providing a positioning interface to connect with a rotary disk, and the rotary disk being able to stay in place after turning a preset angular displace in accordance with the preset program;
whereby, an object to be taken a picture is placed on the rotary disk is taken a picture by the digital picture taking apparatus as soon as the rotary disk is turned the preset angular displacement once; and a 2D signal generated by the digital picture taking apparatus is shifted to a 3D signal by way of the 2D-3D converting device for being treated as a 3D image by the data processing center.
2. The passive control system for taking a three dimensional picture according to claim 1, wherein the passive control system further comprises an illumination control device with an illumination interface to connect with at least an illumination device.
3. The passive control system for taking a three-dimensional picture according to claim 1, wherein each of the interfaces is a USB port, a 1394 port, or a RS232 port.
4. The passive control system for taking a three-dimensional picture according to claim 1, wherein the data processing center is a CPURAMROM.
5. The passive control system for taking a three-dimensional picture according to claim 1, wherein the angular displacement is 30.
6. The passive control system for taking a three-dimensional picture according to claim 1, wherein each interface can use a port commonly or a port respectively.
7. The passive control system for taking a three-dimensional picture according to claim 1, wherein the data processing center is mounted in the control system.